EXHIBIT 99.1

<TABLE>

                                                 BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                               REMIC I
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                   DISTRIBUTIONS IN DOLLARS
                                        PRIOR                                                                                CURRENT
                 ORIGINAL           PRINCIPAL                                                   REALIZED   DEFERRED        PRINCIPAL
   CLASS       FACE VALUE             BALANCE       INTEREST        PRINCIPAL           TOTAL     LOSSES   INTEREST          BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>                 <C>                 <C>             <C>             <C>       <C>         <C>         <C>
 P1-M           21,501.00           21,365.72           0.00            19.20           19.20     0.00        0.00        21,346.52
 P2-M          350,133.00          341,488.74           0.00         1,251.48        1,251.48     0.00        0.00       340,237.26
 X1-M *    142,084,361.67      127,216,598.39      58,389.30             0.00       58,389.30     0.00        0.00   121,167,038.91
 X2-M *    187,559,494.52      167,394,907.71      34,398.20             0.00       34,398.20     0.00        0.00   160,764,305.96
 Y1             71,698.81           62,452.04         351.29         4,128.86        4,480.15     0.00        0.00        58,323.18
 Y2             99,676.65           85,312.05         462.11         5,845.40        6,307.51     0.00        0.00        79,466.65
 Z1        143,556,266.44      128,685,763.29     723,857.42     6,046,796.03    6,770,653.45     0.00        0.00   122,638,967.26
 Z2        199,253,620.42      178,811,556.14     968,562.60     6,666,890.47    7,635,453.07     0.00        0.00   172,144,665.67
 R-I                50.00                0.00           0.00             0.00            0.00     0.00        0.00             0.00


------------------------------------------------------------------------------------------------------------------------------------
TOTALS    343,352,946.32      308,007,937.98   1,786,020.92    12,724,931.44   14,510,952.36      0.00        0.00   295,283,006.54
------------------------------------------------------------------------------------------------------------------------------------
*Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                             FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                           PASS-THROUGH
                                PRIOR                                                             CURRENT              RATES
                            PRINCIPAL                                                           PRINCIPAL
   CLASS    CUSIP             BALANCE         INTEREST           PRINCIPAL            TOTAL       BALANCE      CURRENT         NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>                        <C>                <C>                 <C>              <C>         <C>           <C>          <C>
P1-M                       993.708200         0.000000            0.892982         0.892982    992.815218    0.000000%    0.000000%
P2-M                       975.311496         0.000000            3.574299         3.574299    971.737197    0.000000%    0.000000%
X1-M *                     895.359608         0.410948            0.000000         0.410948    852.782372    0.550771%    0.550771%
X2-M *                     892.489650         0.183399            0.000000         0.183399    857.137658    0.246590%    0.246590%
Y1                         871.033115         4.899523           57.586130        62.485654    813.446945    6.750000%    6.750000%
Y2                         855.888027         4.636091           58.643626        63.279717    797.244402    6.500000%    6.500000%
Z1                         896.413417         5.042325           42.121436        47.163761    854.291981    6.750000%    6.750000%
Z2                         897.406811         4.860954           33.459319        38.320273    863.947492    6.500000%    6.500000%
R-055240DQ5                  0.000000         0.000000            0.000000         0.000000      0.000000    6.750000%    6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                    Bank of America                               ADMINISTRATOR:            Kelly L. Shea
SERVICER:                                  Bank of America                                                     Bankers Trust Company
LEAD UNDERWRITER:                    Donaldson, Lufkin & Jenrette                                                 3 Park Plaza
RECORD DATE:                              November 30, 1998                                                     Irvine, CA 92614
DISTRIBUTION DATE:                        December 28, 1998                            FACTOR INFORMATION:        (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                  Page 1 of 5                               (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>
<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                              REMIC II
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                                 CURRENT
                 ORIGINAL          PRINCIPAL                                                   REALIZED  DEFERRED          PRINCIPAL
CLASS          FACE VALUE            BALANCE      INTEREST        PRINCIPAL            TOTAL     LOSSES  INTEREST            BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>                <C>              <C>            <C>              <C>                <C>       <C>       <C>
 IA-1       96,101,504.00      81,243,868.15    456,996.76     6,047,800.62     6,504,797.38       0.00      0.00      75,196,067.53
 IA-2        5,000,000.00       5,000,000.00     28,125.00             0.00        28,125.00       0.00      0.00       5,000,000.00
 IA-3        9,500,000.00       9,500,000.00     53,437.50             0.00        53,437.50       0.00      0.00       9,500,000.00
 IA-4       14,250,000.00      14,250,000.00     80,156.25             0.00        80,156.25       0.00      0.00      14,250,000.00
 IA-5        4,887,000.00       4,887,000.00     27,489.38             0.00        27,489.38       0.00      0.00       4,887,000.00
 IA-6        9,939,000.00       9,939,000.00     55,906.88             0.00        55,906.88       0.00      0.00       9,939,000.00
 I-X *      11,983,709.00      10,380,320.55     58,389.29             0.00        58,389.29       0.00      0.00       9,782,011.87
 I-PO           21,501.00          21,365.72          0.00            19.20            19.20       0.00      0.00          21,346.52
 IIA-1     121,111,453.00     108,410,109.52    587,221.43     4,157,377.12     4,744,598.55       0.00      0.00     104,252,732.40
 IIA-2       1,000,000.00         852,786.22      4,619.26        49,413.27        54,032.53       0.00      0.00         803,372.95
 IIA-3       8,262,000.00       8,262,000.00     44,752.50             0.00        44,752.50       0.00      0.00       8,262,000.00
 IIA-4      14,913,749.00      14,582,237.66     78,987.12        47,653.82       126,640.94       0.00      0.00      14,534,583.84
 IIA-5      46,447,250.00      41,423,442.28    224,376.98     2,400,203.74     2,624,580.72       0.00      0.00      39,023,238.54
 IIA-6       2,127,000.00               8.94          0.00             8.99             8.99       0.00      0.05               0.00
 II-X *      7,513,508.12       6,350,437.35     34,398.20             0.00        34,398.20       0.00      0.00       5,942,112.23
 II-PO         350,133.00         341,488.74          0.00         1,251.48         1,251.48       0.00      0.00         340,237.26





------------------------------------------------------------------------------------------------------------------------------------
TOTALS     333,910,590.00     298,713,307.23  1,734,856.55    12,703,728.24    14,438,584.79       0.00      0.05     286,009,579.04
------------------------------------------------------------------------------------------------------------------------------------
*Notional Class Balance
</TABLE>
<TABLE>
----------------------------------------------------------------------------------------------------------------------
                       FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                               PASS-THROUGH
                            PRIOR                                                 CURRENT               RATES
                           PRINCIPAL                                            PRINCIPAL
CLASS      CUSIP            BALANCE      INTEREST    PRINCIPAL         TOTAL     BALANCE        CURRENT      NEXT
----------------------------------------------------------------------------------------------------------------------
<S>       <C>     <C>      <C>           <C>         <C>           <C>           <C>           <C>           <C>
IA-1    IA055240CT0        845.396427    4.755355    62.931384     67.686739     782.465044    6.750000%     6.750000%
IA-2    IA055240CU7      1,000.000000    5.625000     0.000000      5.625000   1,000.000000    6.750000%     6.750000%
IA-3    IA055240CV5      1,000.000000    5.625000     0.000000      5.625000   1,000.000000    6.750000%     6.750000%
IA-4    IA055240CW3      1,000.000000    5.625000     0.000000      5.625000   1,000.000000    6.750000%     6.750000%
IA-5    IA055240CX1      1,000.000000    5.625001     0.000000      5.625001   1,000.000000    6.750000%     6.750000%
IA-6    IA055240CY9      1,000.000000    5.625001     0.000000      5.625001   1,000.000000    6.750000%     6.750000%
I-X *   I-055240DF9        866.202655    5.624999     0.000000      5.624999     816.275818    6.750000%     0.000000%
I-PO    I-055240DH5        993.708200    0.000000     0.892982      0.892982     992.815218    0.000000%     6.500000%
IIA-1   II055240CZ6        895.126818    4.848604    34.326870     39.175474     860.799948    6.500000%     6.500000%
IIA-2   II055240DA0        852.786220    4.619260    49.413270     54.032530     803.372950    6.500000%     6.500000%
IIA-3   II055240DB8      1,000.000000    5.416667     0.000000      5.416667   1,000.000000    6.500000%     6.500000%
IIA-4   II055240DC6        977.771428    5.296262     3.195295      8.491557     974.576134    6.500000%     6.500000%
IIA-5   II055240DD4        891.838425    4.830791    51.675906     56.506698     840.162519    6.500000%     6.500000%
IIA-6   II055240DE2          0.004203    0.000000     0.004227      0.004227       0.000000    6.500000%     6.500000%
II-X *  II055240DG7        845.202699    4.578181     0.000000      4.578181     790.857231    6.500000%     0.000000%
II-PO   II055240DU6        975.311496    0.000000     3.574299      3.574299     971.737197    0.000000%     0.000000%




----------------------------------------------------------------------------------------------------------------------
SELLER:                              Bank of America                          ADMINISTRATOR:         Kelly L. Shea
SERVICER:                            Bank of America                                             Bankers Trust Company
LEAD UNDERWRITER:              Donaldson, Lufkin & Jenrette                                           3 Park Plaza
RECORD DATE:                        November 30, 1998                                                Irvine, CA 92614
DISTRIBUTION DATE:                  December 28, 1998                         FACTOR INFORMATION:    (800) 735-7777
----------------------------------------------------------------------------------------------------------------------
                                      Page 2 of 5                             (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>
<TABLE>
                                                                 BA MORTGAGE SECURITIES, INC.
                                                              MORTGAGE PASS-THROUGH CERTIFICATES
                                                                        SERIES 1998-1

                                                               STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                                 DISTRIBUTIONS IN DOLLARS
                                          PRIOR                                                                              CURRENT
                ORIGINAL              PRINCIPAL                                                 REALIZED    DEFERRED       PRINCIPAL
CLASS         FACE VALUE                BALANCE         INTEREST      PRINCIPAL         TOTAL     LOSSES    INTEREST         BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>          <C>                   <C>                 <C>             <C>          <C>             <C>         <C>     <C>
 M           3,776,882.00          3,717,851.78        20,465.73       8,481.30     28,947.03       0.00        0.00    3,709,370.48
 B-1         2,231,794.00          2,196,912.51        12,093.38       5,011.68     17,105.06       0.00        0.00    2,191,900.83
 B-2         1,201,735.00          1,182,952.66         6,511.82       2,698.59      9,210.41       0.00        0.00    1,180,254.07
 B-3         1,030,060.00          1,013,960.82         5,581.57       2,313.08      7,894.65       0.00        0.00    1,011,647.74
 B-4           515,029.00            506,979.42         2,790.78       1,156.54      3,947.32       0.00        0.00      505,822.88
 B-5           686,706.32            675,973.56         3,721.04       1,542.06      5,263.10       0.00        0.00      674,431.50
 R-II               50.00                  0.00             0.00           0.00          0.00       0.00        0.00            0.00



------------------------------------------------------------------------------------------------------------------------------------
TOTALS       9,442,256.32          9,294,630.75        51,164.32      21,203.25     72,367.57       0.00        0.00    9,273,427.50
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                     FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                               PASS-THROUGH
                             PRIOR                                                             CURRENT                RATES
                         PRINCIPAL                                                           PRINCIPAL
CLASS     CUSIP            BALANCE         INTEREST         PRINCIPAL            TOTAL         BALANCE        CURRENT          NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>     <C>     <C>     <C>                <C>               <C>              <C>           <C>             <C>           <C>
M       055240DJ1       984.370648         5.418684          2.245582         7.664266      982.125065      6.605662%     6.261902%
B-1     055240DK8       984.370650         5.418681          2.245584         7.664265      982.125066      6.605662%     6.261902%
B-2     055240DL6       984.370647         5.418682          2.245578         7.664260      982.125069      6.605662%     6.261902%
B-3     055240DM4       984.370639         5.418684          2.245578         7.664262      982.125061      6.605662%     6.261902%
B-4     055240DN2       984.370628         5.418685          2.245582         7.664267      982.125045      6.605662%     6.261902%
B-5     055240DP7       984.370667         5.418677          2.245589         7.664266      982.125078      6.605662%     6.261902%
R-II    055240DR3         0.000000         0.000000          0.000000         0.000000        0.000000      6.750000%     6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                 Bank of America                                ADMINISTRATOR:             Kelly L. Shea
SERVICER:                               Bank of America                                                       Bankers Trust Company
LEAD UNDERWRITER:                 Donaldson, Lufkin & Jenrette                                                    3 Park Plaza
RECORD DATE:                           November 30, 1998                                                        Irvine, CA 92614
DISTRIBUTION DATE:                     December 28, 1998                               FACTOR INFORMATION:       (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 3 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>
<TABLE>

                                                                 BA MORTGAGE SECURITIES, INC.
                                                              MORTGAGE PASS-THROUGH CERTIFICATES
                                                                        SERIES 1998-1

                                                               STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
Distribution Date:                 December 28, 1998
------------------------------------------------------------------------------------------------------------------------------------
MORTGAGE POOL INFORMATION:                                                                 GROUP I                     GROUP II

<S>                                                                                    <C>                          <C>
            BEGINNING BALANCE OF POOL                                                  128,769,581.18              179,238,357.12
            LESS:                  SCHEDULED PRINCIPAL                                    (102,414.39)                (603,913.02)
                                   PRINCIPAL PREPAYMENTS                                (5,948,529.70)              (6,070,074.33)
                                   REPURCHASES                                                   0.00                        0.00
                                   LIQUIDATIONS                                                  0.00                        0.00
                                   OTHER UNSCHEDULED PRINCIPAL                                   0.00                        0.00
                                                                                     -----------------             --------------
            ENDING BALANCE OF POOL                                                     122,718,637.09              172,564,369.77
                                                                                     =================             ==============

            BEGINNING NUMBER OF LOANS IN POOL                                                     401                        525
            ENDING NUMBER OF LOANS IN POOL                                                        384                        509

            WEIGHTED AVERAGE REMAINING TERM TO MATURITY                                           343                        168
            WEIGHTED AVERAGE NET CONTRACT RATE                                              7.543008%                  7.115872%

            CURRENT REALIZED LOSSES ON THE POOL                                                  0.00                       0.00
            CUMULATIVE REALIZED LOSSES ON THE POOL                                               0.00                       0.00

            BEGINNING POOL BALANCE OF PREMIUM LOANS                                    127,216,598.39               167,394,907.71
            STRIPPED INTEREST RATE                                                          0.550771%                  0.246590%
</TABLE>
<TABLE>
-----------------------------------------------------------------------------------------------------------------------------------
DELINQUENT, BANKRUPTCY,                                                                           LOANS        LOANS          LOANS
FORECLOSURE, AND REO                           30 TO 59         60 TO 89         90 PLUS           IN            IN             IN
LOAN INFORMATION                                 DAYS             DAYS             DAYS        BANKRUPTCY   FORECLOSURE        REO
-----------------------------------------------------------------------------------------------------------------------------------
<S>                                                 <C>            <C>              <C>           <C>          <C>             <C>
GROUP I     PRINCIPAL BALANCE                       0.00           0.00             0.00          0.00         0.00            0.00
                 PERCENTAGE OF GROUP BAL.         0.0000%        0.0000%          0.0000%       0.0000%      0.0000%         0.0000%
            ------------------------------------------------------------------------------------------------------------------------
            NUMBER OF LOANS                            0              0                0             0            0               0
                 PERCENTAGE OF LOANS              0.0000%        0.0000%          0.0000%       0.0000%      0.0000%         0.0000%
------------------------------------------------------------------------------------------------------------------------------------
GROUP II    PRINCIPAL BALANCE                 257,311.64           0.00             0.00          0.00         0.00            0.00
                 PERCENTAGE OF GROUP BAL.         0.0871%        0.0000%          0.0000%       0.0000%      0.0000%         0.0000%
            ------------------------------------------------------------------------------------------------------------------------
            NUMBER OF LOANS                            1              0                0             0            0               0
                 PERCENTAGE OF LOANS              0.1120%        0.0000%          0.0000%       0.0000%      0.0000%         0.0000%
------------------------------------------------------------------------------------------------------------------------------------

            GROUP I BOOK VALUE OF REO PROPERTIES                                                                 NA
            GROUP II BOOK VALUE OF REO PROPERTIES                                                                NA


SERVICING INFORMATION:                                                                     GROUP I                     GROUP II

            SERVICING FEES ACCRUED DURING THE CURRENT DUE PERIOD                            26,827.00                   59,441.39
            PLUS:                  ADDITIONAL SERVICING COMPENSATION                             0.00                        0.00
            LESS:                  AMTS. TO COVER PREPAYMENT INT. SHORTFALL                (25,769.66)                 (19,463.49)
                                   DELINQUENT SERVICING FEES                                  (837.45)                     519.19
                                                                                        --------------               ------------
            SERVICING FEES COLLECTED FOR THE CURRENT DUE PERIOD                                219.89                   40,497.09
                                                                                        ==============               ============

            ADVANCED PRINCIPAL                                                               3,117.94                    4,574.78
            ADVANCED INTEREST                                                               24,541.67                    7,641.44

------------------------------------------------------------------------------------------------------------------------------------
                                                           Page 4 of 5                       C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>
<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
Distribution Date:                 December 28, 1998
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                             OTHER                                  CUMULATIVE
                                      PREPAYMENT          UNSCHEDULED               CERTIFICATE       UNPAID              CUMULATIVE
                                       PRINCIPAL           PRINCIPAL                  INTEREST       INTEREST              REALIZED
   CLASS                              DISTRIBUTED         DISTRIBUTED                SHORTFALL       SHORTFALL              LOSSES
------------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------
<S>                                  <C>                      <C>                       <C>           <C>                     <C>
 CLASS IA-1                          5,948,510.82             0.00                      0.00          0.00                    0.00
 CLASS IA-2                                  0.00             0.00                      0.00          0.00                    0.00
 CLASS IA-3                                  0.00             0.00                      0.00          0.00                    0.00
 CLASS IA-4                                  0.00             0.00                      0.00          0.00                    0.00
 CLASS IA-5                                  0.00             0.00                      0.00          0.00                    0.00
 CLASS IA-6                                  0.00             0.00                      0.00          0.00                    0.00
 CLASS I-X                                   0.00             0.00                      0.00          0.00                    0.00
 CLASS I-PO                                 18.88             0.00                      0.00          0.00                    0.00
 CLASS IIA-1                         3,791,456.64             0.00                      0.00          0.00                    0.00
 CLASS IIA-2                            45,064.05             0.00                      0.00          0.00                    0.00
 CLASS IIA-3                                 0.00             0.00                      0.00          0.00                    0.00
 CLASS IIA-4                            43,459.47             0.00                      0.00          0.00                    0.00
 CLASS IIA-5                         2,188,944.64             0.00                      0.00          0.00                    0.00
 CLASS IIA-6                                 8.20             0.00                      0.00          0.00                    0.00
 CLASS II-X                                  0.00             0.00                      0.00          0.00                    0.00
 CLASS II-PO                             1,141.33             0.00                      0.00          0.00                    0.00
 CLASS M                                     0.00             0.00                      0.00          0.00                    0.00
 CLASS B-1                                   0.00             0.00                      0.00          0.00                    0.00
 CLASS B-2                                   0.00             0.00                      0.00          0.00                    0.00
 CLASS B-3                                   0.00             0.00                      0.00          0.00                    0.00
 CLASS B-4                                   0.00             0.00                      0.00          0.00                    0.00
 CLASS B-5                                   0.00             0.00                      0.00          0.00                    0.00

------------------------------------------------------------------------------------------------------------------------------------
  TOTALS                            12,018,604.03             0.00                      0.00          0.00                    0.00
------------------------------------------------------------------------------------------------------------------------------------


            OTHER REPORTING ITEMS:

            GROUP I PERCENTAGE                                                                                 96.95%
            GROUP I PREPAYMENT PERCENTAGE                                                                     100.00%
            GROUP II PERCENTAGE                                                                                97.00%
            GROUP II PREPAYMENT PERCENTAGE                                                                    100.00%

            SUBORDINATE PRINCIPAL DISTRIBUTION AMOUNT                                                       21,203.25
            HAS THE CREDIT SUPPORT DEPLETION DATE OCCURRED                                                         No

            BANKRUPTCY AMOUNT                                                                              100,000.00
            FRAUD LOSS AMOUNT                                                                            6,160,158.77
            SPECIAL HAZARD AMOUNT                                                                        4,500,664.47
            EXTRAORDINARY LOSSES FOR THE PRIOR PERIOD                                                            0.00

            GROUP I EXTRAORDINARY LOSSES                                                                         0.00
            GROUP II EXTRAORDINARY LOSSES                                                                        0.00


------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 5 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>






<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                               REMIC I
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                                DISTRIBUTIONS IN DOLLARS
                                         PRIOR                                                                               CURRENT
                   ORIGINAL          PRINCIPAL                                                  REALIZED   DEFERRED        PRINCIPAL
CLASS            FACE VALUE            BALANCE        INTEREST       PRINCIPAL          TOTAL     LOSSES   INTEREST          BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>               <C>                <C>                  <C>            <C>            <C>         <C>        <C>         <C>
 P1-M             21,501.00          21,482.00            0.00           19.11          19.11       0.00       0.00        21,462.89
 P2-M            350,133.00         348,818.02            0.00        1,049.99       1,049.99       0.00       0.00       347,768.03
 X1-M *      142,084,361.67     141,713,575.08       67,060.42            0.00      67,060.42       0.00       0.00    97,236,268.85
 X2-M *      187,559,494.52     186,909,427.22       40,554.09            0.00      40,554.09       0.00       0.00   130,633,579.04
 Y1               71,698.81          71,374.77          401.48        2,009.94       2,411.42       0.00       0.00        69,364.83
 Y2               99,676.65          98,983.13          536.16        3,024.69       3,560.85       0.00       0.00        95,958.44
 Z1          143,556,266.44     143,184,121.11      805,410.68    2,260,908.79   3,066,319.47       0.00       0.00   140,923,212.32
 Z2          199,253,620.42     198,560,796.06    1,075,537.65    1,821,391.02   2,896,928.67       0.00       0.00   196,739,405.04
 R-I                  50.00               0.00            0.00            0.00           0.00       0.00       0.00             0.00


------------------------------------------------------------------------------------------------------------------------------------
TOTALS        43,352,946.32     342,285,575.09    1,989,500.48    4,088,403.54   6,077,904.02       0.00       0.00   338,197,171.55
------------------------------------------------------------------------------------------------------------------------------------
*Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                       FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                       PASS-THROUGH
                              PRIOR                                                    CURRENT                 RATES
                          PRINCIPAL                                                  PRINCIPAL
CLASS      CUSIP            BALANCE         INTEREST     PRINCIPAL        TOTAL        BALANCE          CURRENT           NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>                       <C>                <C>           <C>          <C>          <C>               <C>            <C>
 P1-M                     999.116320         0.000000      0.888796     0.888796     998.227524        0.000000%      0.000000%
 P2-M                     996.244341         0.000000      2.998832     2.998832     993.245510        0.000000%      0.000000%
 X1-M *                   997.390377         0.471976      0.000000     0.471976     684.355883        0.567853%      0.567853%
 X2-M *                   996.534074         0.216220      0.000000     0.216220     696.491422        0.260366%      0.260366%
 Y1                       995.480504         5.599535     28.033111    33.632645     967.447404        6.750000%      6.750000%
 Y2                       993.042317         5.378993     30.345006    35.723999     962.697296        6.500000%      6.500000%
 Z1                       997.407669         5.610418     15.749287    21.359705     981.658383        6.750000%      6.750000%
 Z2                       996.522902         5.397832      9.141069    14.538901     987.381833        6.500000%      6.500000%
 R-I     055240DQ5          0.000000         0.000000      0.000000     0.000000       0.000000        6.750000%      6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                  Bank of America                      ADMINISTRATOR:           Kelly L. Shea
SERVICER:                                Bank of America                                           Bankers Trust Company
LEAD UNDERWRITER:                  Donaldson, Lufkin & Jenrette                                        3 Park Plaza
RECORD DATE:                               May 29, 1998                                              Irvine, CA 92614
DISTRIBUTION DATE:                        June 25, 1998                        FACTOR INFORMATION:    (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                  Page 1 of 5                            (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                              REMIC II
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                   DISTRIBUTIONS IN DOLLARS
                                      PRIOR                                                                                  CURRENT
                 ORIGINAL         PRINCIPAL                                                    REALIZED    DEFERRED       PRINCIPAL
CLASS          FACE VALUE           BALANCE       INTEREST        PRINCIPAL            TOTAL     LOSSES    INTEREST          BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>               <C>               <C>            <C>              <C>                <C>         <C>     <C>
 IA-1       96,101,504.00     95,732,249.08     538,493.90     2,259,825.24     2,798,319.14       0.00        0.00    93,472,423.84
 IA-2        5,000,000.00      5,000,000.00      28,125.00             0.00        28,125.00       0.00        0.00     5,000,000.00
 IA-3        9,500,000.00      9,500,000.00      53,437.50             0.00        53,437.50       0.00        0.00     9,500,000.00
 IA-4       14,250,000.00     14,250,000.00      80,156.25             0.00        80,156.25       0.00        0.00    14,250,000.00
 IA-5        4,887,000.00      4,887,000.00      27,489.38             0.00        27,489.38       0.00        0.00     4,887,000.00
 IA-6        9,939,000.00      9,939,000.00      55,906.88             0.00        55,906.88       0.00        0.00     9,939,000.00
 I-X *      11,983,709.00     11,921,852.29      67,060.42             0.00        67,060.42       0.00        0.00     7,535,131.36
 I-PO           21,501.00         21,482.00           0.00            19.11            19.11       0.00        0.00        21,462.89
 IIA-1     121,111,453.00    120,689,291.91     653,733.66     1,128,661.79     1,782,395.45       0.00        0.00   119,560,630.12
 IIA-2       1,000,000.00        995,858.16       5,394.23        12,701.80        18,096.03       0.00        0.00       983,156.36
 IIA-3       8,262,000.00      8,262,000.00      44,752.50             0.00        44,752.50       0.00        0.00     8,262,000.00
 IIA-4      14,913,749.00     14,865,491.44      80,521.41        48,289.55       128,810.96       0.00        0.00    14,817,201.89
 IIA-5      46,447,250.00     46,234,541.74     250,437.10       328,890.83       579,327.93       0.00        0.00    45,905,650.91
 IIA-6       2,127,000.00      2,138,521.25           0.00       299,673.24       299,673.24       0.00   11,583.66     1,850,431.67
 II-X *      7,513,508.12      7,486,909.67      40,554.09             0.00        40,554.09       0.00        0.00     4,386,480.15
 II-PO         350,133.00        348,818.02           0.00         1,049.99         1,049.99       0.00        0.00       347,768.03


------------------------------------------------------------------------------------------------------------------------------------
TOTALS     333,910,590.00    332,864,253.60   1,926,062.32     4,079,111.55     6,005,173.87       0.00   11,583.66   328,796,725.71
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                             FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                         PASS-THROUGH
                                      PRIOR                                                  CURRENT                   RATES
                                  PRINCIPAL                                                PRINCIPAL
CLASS      CUSIP                    BALANCE    INTEREST     PRINCIPAL           TOTAL        BALANCE          CURRENT         NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>     <C>     <C>              <C>           <C>          <C>             <C>           <C>               <C>            <C>
IA-1    055240CT0                996.157657    5.603387     23.514983       29.118370     972.642674        6.750000%      6.750000%
IA-2    055240CU7              1,000.000000    5.625000      0.000000        5.625000   1,000.000000        6.750000%      6.750000%
IA-3    055240CV5              1,000.000000    5.625000      0.000000        5.625000   1,000.000000        6.750000%      6.750000%
IA-4    055240CW3              1,000.000000    5.625000      0.000000        5.625000   1,000.000000        6.750000%      6.750000%
IA-5    055240CX1              1,000.000000    5.625001      0.000000        5.625001   1,000.000000        6.750000%      6.750000%
IA-6    055240CY9              1,000.000000    5.625001      0.000000        5.625001   1,000.000000        6.750000%      6.750000%
I-X *   055240DF9                994.838267    5.625000      0.000000        5.625000     628.781236        6.750000%      0.000000%
I-PO    055240DH5                999.116320    0.000000      0.888796        0.888796     998.227524        0.000000%      6.500000%
IIA-1   055240CZ6                996.514276    5.397786      9.319200       14.716985     987.195077        6.500000%      6.500000%
IIA-2   055240DA0                995.858160    5.394230     12.701800       18.096030     983.156360        6.500000%      6.500000%
IIA-3   055240DB8              1,000.000000    5.416667      0.000000        5.416667   1,000.000000        6.500000%      6.500000%
IIA-4   055240DC6                996.764223    5.399139      3.237921        8.637061     993.526302        6.500000%      6.500000%
IIA-5   055240DD4                995.420434    5.391861      7.080954       12.472814     988.339480        6.500000%      6.500000%
IIA-6   055240DE2              1,005.416667    0.000000    140.890098      140.890098     869.972576        6.500000%      6.500000%
II-X *  055240DG7                996.459915    5.397491      0.000000        5.397491     583.812526        6.500000%      0.000000%
II-PO   055240DU6                996.244341    0.000000      2.998832        2.998832     993.245510        0.000000%      0.000000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                              Bank of America              ADMINISTRATOR:                   Kelly L. Shea
SERVICER:                                            Bank of America                                           Bankers Trust Company
LEAD UNDERWRITER:                              Donaldson, Lufkin & Jenrette                                        3 Park Plaza
RECORD DATE:                                           May 29, 1998                                              Irvine, CA 92614
DISTRIBUTION DATE:                                    June 25, 1998               ACTOR INFORMATION:              (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 2 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

----------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                      PRIOR                                                                                CURRENT
                  ORIGINAL        PRINCIPAL                                                   EALIZED     DEFERRED       PRINCIPAL
CLASS           FACE VALUE          BALANCE       INTEREST        PRINCIPAL         TOTAL      LOSSES     INTEREST         BALANCE
----------------------------------------------------------------------------------------------------------------------------------
<S>           <C>              <C>               <C>               <C>          <C>              <C>          <C>     <C>
    M         3,776,882.00     3,768,528.07      20,741.80         8,350.26     29,092.06        0.00         0.00    3,760,177.81
    B-1       2,231,794.00     2,226,857.59      12,256.52         4,934.24     17,190.76        0.00         0.00    2,221,923.35
    B-2       1,201,735.00     1,199,076.93       6,599.66         2,656.90      9,256.56        0.00         0.00    1,196,420.03
    B-3       1,030,060.00     1,027,781.65       5,656.86         2,277.35      7,934.21        0.00         0.00    1,025,504.30
    B-4         515,029.00       513,889.83       2,828.42         1,138.67      3,967.09        0.00         0.00      512,751.16
    B-5         686,706.32       685,187.42       3,771.24         1,518.23      5,289.47        0.00         0.00      683,669.19
    R-II             50.00             0.00           0.00             0.00          0.00        0.00         0.00            0.00


----------------------------------------------------------------------------------------------------------------------------------
TOTALS        9,442,256.32     9,421,321.49      51,854.50        20,875.65     72,730.15        0.00         0.00    9,400,445.84
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                         FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                            PASS-THROUGH
                                  PRIOR                                                    CURRENT                    RATES
                              PRINCIPAL                                                  PRINCIPAL
   CLASS     CUSIP              BALANCE       INTEREST     PRINCIPAL          TOTAL        BALANCE            CURRENT           NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>        <C>     <C>       <C>              <C>           <C>            <C>          <C>                 <C>           <C>
   M       055240DJ1         997.788141       5.491779      2.210887       7.702666     995.577254          6.604742%     6.604893%
   B-1     055240DK8         997.788143       5.491779      2.210885       7.702664     995.577258          6.604742%     6.604893%
   B-2     055240DL6         997.788140       5.491776      2.210887       7.702663     995.577253          6.604742%     6.604893%
   B-3     055240DM4         997.788139       5.491777      2.210891       7.702668     995.577248          6.604742%     6.604893%
   B-4     055240DN2         997.788144       5.491768      2.210885       7.702654     995.577259          6.604742%     6.604893%
   B-5     055240DP7         997.788135       5.491780      2.210887       7.702667     995.577248          6.604742%     6.604893%
   R-II    055240DR3           0.000000       0.000000      0.000000       0.000000       0.000000          6.750000%     6.750000%

------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                          Bank of America                      ADMINISTRATOR:              Kelly L. Shea
SERVICER:                                        Bank of America                                              Bankers Trust Company
LEAD UNDERWRITER:                          Donaldson, Lufkin & Jenrette                                           3 Park Plaza
RECORD DATE:                                       May 29, 1998                                                 Irvine, CA 92614
DISTRIBUTION DATE:                                June 25, 1998                       FACTOR INFORMATION:     (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 3 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>


<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

-----------------------------------------------------------------------------------------------------------------------------------
Distribution Date:                                     June 25, 1998
-----------------------------------------------------------------------------------------------------------------------------------
MORTGAGE POOL INFORMATION:                                                                            GROUP I              GROUP II
<S>                                                                                            <C>                   <C>
        BEGINNING BALANCE OF POOL                                                              143,276,977.98        199,008,597.42
        LESS:                                SCHEDULED PRINCIPAL                                  (112,289.09)          (646,503.42)
                                             PRINCIPAL PREPAYMENTS                              (2,150,648.75)        (1,178,962.28)
                                             REPURCHASES                                                 0.00                  0.00
                                             LIQUIDATIONS                                                0.00                  0.00
                                             OTHER UNSCHEDULED PRINCIPAL                                 0.00                  0.00
                                                                                            ------------------     -----------------
        ENDING BALANCE OF POOL                                                                 141,014,040.14        197,183,131.72
                                                                                            ==================     =================

        BEGINNING NUMBER OF LOANS IN POOL                                                                 444                   567
        ENDING NUMBER OF LOANS IN POOL                                                                    438                   563

        WEIGHTED AVERAGE REMAINING TERM TO MATURITY                                                       349                   174
        WEIGHTED AVERAGE NET CONTRACT RATE                                                           7.560645%             7.135701%

        CURRENT REALIZED LOSSES ON THE POOL                                                              0.00                  0.00
        CUMULATIVE REALIZED LOSSES ON THE POOL                                                           0.00                  0.00

        BEGINNING POOL BALANCE OF PREMIUM LOANS                                                141,713,575.08        186,909,427.22
        STRIPPED INTEREST RATE                                                                       0.567853%             0.260366%

------------------------------------------------------------------------------------------------------------------------------------
DELINQUENT, BANKRUPTCY,                                                                             LOANS         LOANS      LOANS
FORECLOSURE, AND REO                                  30 TO 59         60 TO 89      90 PLUS         IN            IN         IN
LOAN INFORMATION                                        DAYS             DAYS         DAYS       BANKRUPTCY   FORECLOSURE    REO
------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
<S>                                                      <C>               <C>         <C>         <C>           <C>           <C>
GROUP I           PRINCIPAL BALANCE                      0.00              0.00        0.00        0.00          0.00          0.00
                       PERCENTAGE OF GROUP BAL.        0.0000%           0.0000%     0.0000%     0.0000%       0.0000%       0.0000%
                  ------------------------------------------------------------------------------------------------------------------
                  NUMBER OF LOANS                           0                 0           0           0             0             0
                       PERCENTAGE OF LOANS             0.0000%           0.0000%     0.0000%     0.0000%       0.0000%       0.0000%
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
GROUP II          PRINCIPAL BALANCE                      0.00              0.00        0.00        0.00          0.00          0.00
                       PERCENTAGE OF GROUP BAL.        0.0000%           0.0000%     0.0000%     0.0000%       0.0000%       0.0000%
                  ------------------------------------------------------------------------------------------------------------------
                  NUMBER OF LOANS                           0                 0           0           0             0             0
                       PERCENTAGE OF LOANS             0.0000%           0.0000%     0.0000%     0.0000%       0.0000%       0.0000%
------------------------------------------------------------------------------------------------------------------------------------

                  GROUP I BOOK VALUE OF REO PROPERTIES                                                             NA
                  GROUP II BOOK VALUE OF REO PROPERTIES                                                            NA


SERVICING INFORMATION:                                                                               GROUP I               GROUP II

                  SERVICING FEES ACCRUED DURING THE CURRENT DUE PERIOD                                29,849.37           66,760.28
                  PLUS:                                ADDITIONAL SERVICING COMPENSATION                   0.00                0.00
                  LESS:                                AMTS. TO COVER PREPAYMENT INT. SHORTFALL       (8,542.22)          (4,646.25)
                                                       DELINQUENT SERVICING FEES                        (918.80)           1,035.25
                                                                                                   -------------        ------------
                  SERVICING FEES COLLECTED FOR THE CURRENT DUE PERIOD                                 20,388.35           63,149.28
                                                                                                   =============        ============

                  ADVANCED PRINCIPAL                                                                   3,390.49            8,572.46
                  ADVANCED INTEREST                                                                   26,300.08           15,192.14

------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 4 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>


<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------

Distribution Date:                                     June 25, 1998
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                              OTHER                                  CUMULATIVE
                                      PREPAYMENT        UNSCHEDULED             CERTIFICATE              UNPAID           CUMULATIVE
                                       PRINCIPAL          PRINCIPAL                INTEREST            INTEREST             REALIZED
CLASS                                DISTRIBUTED        DISTRIBUTED               SHORTFALL           SHORTFALL              LOSSES
------------------------------------------------------------------------------------------------------------------------------------
<S>      <C>                        <C>                        <C>                    <C>                <C>                   <C>
CLASS IA-1                          2,150,630.56               0.00                   0.00               0.00                  0.00
CLASS IA-2                                  0.00               0.00                   0.00               0.00                  0.00
CLASS IA-3                                  0.00               0.00                   0.00               0.00                  0.00
CLASS IA-4                                  0.00               0.00                   0.00               0.00                  0.00
CLASS IA-5                                  0.00               0.00                   0.00               0.00                  0.00
CLASS IA-6                                  0.00               0.00                   0.00               0.00                  0.00
CLASS I-X                                   0.00               0.00                   0.00               0.00                  0.00
CLASS I-PO                                 18.19               0.00                   0.00               0.00                  0.00
CLASS IIA-1                           731,420.70               0.00                   0.00               0.00                  0.00
CLASS IIA-2                             8,231.30               0.00                   0.00               0.00                  0.00
CLASS IIA-3                                 0.00               0.00                   0.00               0.00                  0.00
CLASS IIA-4                            31,293.67               0.00                   0.00               0.00                  0.00
CLASS IIA-5                           213,135.20               0.00                   0.00               0.00                  0.00
CLASS IIA-6                           194,200.96               0.00                   0.00               0.00                  0.00
CLASS II-X                                  0.00               0.00                   0.00               0.00                  0.00
CLASS II-PO                               680.44               0.00                   0.00               0.00                  0.00
CLASS M                                     0.00               0.00                   0.00               0.00                  0.00
CLASS B-1                                   0.00               0.00                   0.00               0.00                  0.00
CLASS B-2                                   0.00               0.00                   0.00               0.00                  0.00
CLASS B-3                                   0.00               0.00                   0.00               0.00                  0.00
CLASS B-4                                   0.00               0.00                   0.00               0.00                  0.00
CLASS B-5                                   0.00               0.00                   0.00               0.00                  0.00

------------------------------------------------------------------------------------------------------------------------------------
TOTALS                              3,329,611.03               0.00                   0.00               0.00                  0.00
------------------------------------------------------------------------------------------------------------------------------------


                  OTHER REPORTING ITEMS:

                  GROUP I PERCENTAGE                                                                          97.24%
                  GROUP I PREPAYMENT PERCENTAGE                                                              100.00%
                  GROUP II PERCENTAGE                                                                         97.24%
                  GROUP II PREPAYMENT PERCENTAGE                                                             100.00%

                  SUBORDINATE PRINCIPAL DISTRIBUTION AMOUNT                                                20,875.65
                  HAS THE CREDIT SUPPORT DEPLETION DATE OCCURRED                                                  No

                  BANKRUPTCY AMOUNT                                                                       100,000.00
                  FRAUD LOSS AMOUNT                                                                     6,867,057.93
                  SPECIAL HAZARD AMOUNT                                                                 4,500,664.47
                  EXTRAORDINARY LOSSES FOR THE PRIOR PERIOD                                                     0.00

                  GROUP I EXTRAORDINARY LOSSES                                                                  0.00
                  GROUP II EXTRAORDINARY LOSSES                                                                 0.00

------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 5 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company

</TABLE>

<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                               REMIC I
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                    DISTRIBUTIONS IN DOLLARS
                                        PRIOR                                                                                CURRENT
                  ORIGINAL          PRINCIPAL                                                  REALIZED   DEFERRED         PRINCIPAL
CLASS           FACE VALUE            BALANCE        INTEREST       PRINCIPAL          TOTAL     LOSSES   INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>                <C>                  <C>            <C>            <C>         <C>        <C>          <C>
P1-M            21,501.00          21,462.89            0.00           19.21          19.21       0.00       0.00         21,443.68
P2-M           350,133.00         347,768.03            0.00        1,242.26       1,242.26       0.00       0.00        346,525.77
X1-M *     142,084,361.67     139,452,348.85       65,538.60            0.00      65,538.60       0.00       0.00    139,452,348.85
X2-M *     187,559,494.52     185,121,395.90       39,997.41            0.00      39,997.41       0.00       0.00    185,121,395.90
Y1              71,698.81          69,364.83          390.18          639.40       1,029.58       0.00       0.00         68,725.43
Y2              99,676.65          95,958.44          519.77        1,123.28       1,643.05       0.00       0.00         94,835.16
Z1         143,556,266.44     140,923,212.32      792,693.07    1,770,218.46   2,562,911.53       0.00       0.00    139,152,993.86
Z2         199,253,620.42     196,739,405.04    1,065,671.78      736,913.12   1,802,584.90       0.00       0.00    196,002,491.92
R-I                 50.00               0.00            0.00            0.00           0.00       0.00       0.00              0.00


-----------------------------------------------------------------------------------------------------------------------------------
TOTALS     343,352,946.32     338,197,171.55    1,964,810.82    2,510,155.72   4,474,966.54      0.00       0.00    335,687,015.82
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------
                        FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                          PASS-THROUGH
                               PRIOR                                                              CURRENT              RATES
                           PRINCIPAL                                                      PRINCIPAL
CLASS       CUSIP            BALANCE        INTEREST      PRINCIPAL          TOTAL          BALANCE      CURRENT        NEXT
------------------------------------------------------------------------------------------------------------------------------
<S>                        <C>               <C>            <C>            <C>            <C>           <C>         <C>
 P1-M                      998.227524        0.000000       0.893447       0.893447       997.334077    0.000000%   0.000000%
 P2-M                      993.245510        0.000000       3.547966       3.547966       989.697544    0.000000%   0.000000%
 X1-M *                    981.475704        0.461265       0.000000       0.461265       981.475704    0.563966%   0.563966%
 X2-M *                    987.000932        0.213252       0.000000       0.213252       987.000932    0.259273%   0.259273%
 Y1                        967.447404        5.441931       8.917850      14.359781       958.529543    6.750000%   6.750000%
 Y2                        962.697296        5.214561      11.269228      16.483790       951.428057    6.500000%   6.500000%
 Z1                        981.658383        5.521828      12.331182      17.853010       969.327200    6.750000%   6.750000%
 Z2                        987.381833        5.348318       3.698368       9.046686       983.683466    6.500000%   6.500000%
 R-I      055240DQ5          0.000000        0.000000       0.000000       0.000000         0.000000    6.750000%   6.750000%


------------------------------------------------------------------------------------------------------------------------------
SELLER:                                       Bank of America                       ADMINISTRATOR:           Kelly L. Shea
SERVICER:                                     Bank of America                                            Bankers Trust Company
LEAD UNDERWRITER:                      Donaldson, Lufkin & Jenrette                                           3 Park Plaza
RECORD DATE:                                   June 30, 1998                                                 Irvine, CA 92614
DISTRIBUTION DATE:                             July 27, 1998                        ACTOR INFORMATION:        (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------
                                                            Page 1 of 5               (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                              REMIC II
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                                 CURRENT
                  ORIGINAL         PRINCIPAL                                                  REALIZED    DEFERRED         PRINCIPAL
CLASS           FACE VALUE           BALANCE       INTEREST       PRINCIPAL           TOTAL     LOSSES    INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>          <C>               <C>               <C>           <C>             <C>                <C>         <C>      <C>
   IA-1      96,101,504.00     93,472,423.76     525,782.38    1,767,738.02    2,293,520.40       0.00        0.00     91,704,685.74
   IA-2       5,000,000.00      5,000,000.00      28,125.00            0.00       28,125.00       0.00        0.00      5,000,000.00
   IA-3       9,500,000.00      9,500,000.00      53,437.50            0.00       53,437.50       0.00        0.00      9,500,000.00
   IA-4      14,250,000.00     14,250,000.00      80,156.25            0.00       80,156.25       0.00        0.00     14,250,000.00
   IA-5       4,887,000.00      4,887,000.00      27,489.38            0.00       27,489.38       0.00        0.00      4,887,000.00
   IA-6       9,939,000.00      9,939,000.00      55,906.88            0.00       55,906.88       0.00        0.00      9,939,000.00
   I-X *     11,983,709.00     11,651,307.01      65,538.60            0.00       65,538.60       0.00        0.00     11,651,307.01
   I-PO          21,501.00         21,462.89           0.00           19.21           19.21       0.00        0.00         21,443.68
   IIA-1    121,111,453.00    119,560,630.12     647,620.08      449,825.68    1,097,445.76       0.00        0.00    119,110,804.44
   IIA-2      1,000,000.00        983,102.78       5,325.14        4,491.29        9,816.43       0.00        0.00        978,611.49
   IIA-3      8,262,000.00      8,262,000.00      44,752.50            0.00       44,752.50       0.00        0.00      8,262,000.00
   IIA-4     14,913,749.00     14,819,857.73      80,274.23       47,551.98      127,826.21       0.00        0.00     14,772,305.75
   IIA-5     46,447,250.00     45,905,650.91     248,655.61      228,169.96      476,825.57       0.00        0.00     45,677,480.95
   IIA-6      2,127,000.00      1,847,829.41           0.00            0.00            0.00       0.00   10,009.07      1,857,838.48
   II-X *     7,513,508.12      7,384,138.11      39,997.41            0.00       39,997.41       0.00        0.00      7,384,138.11
   II-PO        350,133.00        347,768.03           0.00        1,242.26        1,242.26       0.00        0.00        346,525.77
------------------------------------------------------------------------------------------------------------------------------------
TOTALS      333,910,590.00    328,796,725.63   1,903,060.96    2,499,038.40    4,402,099.36       0.00   10,009.07    326,307,696.30
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                              FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                       PASS-THROUGH
                                      PRIOR                                                    CURRENT               RATES
                                  PRINCIPAL                                                  PRINCIPAL
CLASS         CUSIP                 BALANCE      INTEREST     PRINCIPAL           TOTAL          BALANCE       CURRENT        NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>                  <C>             <C>          <C>             <C>             <C>            <C>           <C>
 IA-1       055240CT0            972.642673      5.471115     18.394489       23.865604       954.248185     6.750000%     6.750000%
 IA-2       055240CU7          1,000.000000      5.625000      0.000000        5.625000     1,000.000000     6.750000%     6.750000%
 IA-3       055240CV5          1,000.000000      5.625000      0.000000        5.625000     1,000.000000     6.750000%     6.750000%
 IA-4       055240CW3          1,000.000000      5.625000      0.000000        5.625000     1,000.000000     6.750000%     6.750000%
 IA-5       055240CX1          1,000.000000      5.625001      0.000000        5.625001     1,000.000000     6.750000%     6.750000%
 IA-6       055240CY9          1,000.000000      5.625001      0.000000        5.625001     1,000.000000     6.750000%     6.750000%
 I-X *      055240DF9            972.262177      5.625000      0.000000        5.625000       972.262177     6.750000%     0.000000%
 I-PO       055240DH5            998.227524      0.000000      0.893447        0.893447       997.334077     0.000000%     6.500000%
 IIA-1      055240CZ6            987.195077      5.347307      3.714146        9.061453       983.480930     6.500000%     6.500000%
 IIA-2      055240DA0            983.102780      5.325140      4.491290        9.816430       978.611490     6.500000%     6.500000%
 IIA-3      055240DB8          1,000.000000      5.416667      0.000000        5.416667     1,000.000000     6.500000%     6.500000%
 IIA-4      055240DC6            993.704382      5.382565      3.188466        8.571031       990.515916     6.500000%     6.500000%
 IIA-5      055240DD4            988.339480      5.353506      4.912454       10.265959       983.427026     6.500000%     6.500000%
 IIA-6      055240DE2            868.749135      0.000000      0.000000        0.000000       873.454857     6.500000%     6.500000%
 II-X       055240DG7            982.781677      5.323400      0.000000        5.323400       982.781677     6.500000%     0.000000%
 II-PO      055240DU6            993.245510      0.000000      3.547966        3.547966       989.697544     0.000000%     0.000000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                       Bank of America                           ADMINISTRATOR:            Kelly L. Shea
SERVICER:                                     Bank of America                                                  Bankers Trust Company
LEAD UNDERWRITER:                      Donaldson, Lufkin & Jenrette                                                3 Park Plaza
RECORD DATE:                                   June 30, 1998                                                     Irvine, CA 92614
DISTRIBUTION DATE:                             July 27, 1998                            FACTOR INFORMATION:       (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 2 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                      DISTRIBUTIONS IN DOLLARS
                                          PRIOR                                                                              CURRENT
                       ORIGINAL       PRINCIPAL                                               REALIZED     DEFERRED        PRINCIPAL
    CLASS            FACE VALUE         BALANCE       INTEREST       PRINCIPAL         TOTAL    LOSSES     INTEREST          BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>                <C>             <C>               <C>              <C>          <C>            <C>          <C>      <C>
      M            3,776,882.00    3,760,177.84      20,696.31        8,450.56     29,146.87      0.00         0.00     3,751,727.28
      B-1          2,231,794.00    2,221,923.37      12,229.64        4,993.51     17,223.15      0.00         0.00     2,216,929.86
      B-2          1,201,735.00    1,196,420.04       6,585.19        2,688.81      9,274.00      0.00         0.00     1,193,731.23
      B-3          1,030,060.00    1,025,504.31       5,644.45        2,304.70      7,949.15      0.00         0.00     1,023,199.61
      B-4            515,029.00      512,751.16       2,822.22        1,152.35      3,974.57      0.00         0.00       511,598.81
      B-5            686,706.32      683,669.20       3,762.97        1,536.47      5,299.44      0.00         0.00       682,132.73
      R-II                50.00            0.00           0.00            0.00          0.00      0.00         0.00             0.00


------------------------------------------------------------------------------------------------------------------------------------
TOTALS             9,442,256.32    9,400,445.92      51,740.78       21,126.40     72,867.18      0.00         0.00     9,379,319.52
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                                        FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                             PASS-THROUGH
                             PRIOR                                                             CURRENT              RATES
                         PRINCIPAL                                                           PRINCIPAL
   CLASS       CUSIP       BALANCE        INTEREST            PRINCIPAL         TOTAL          BALANCE        CURRENT       NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>          <C>               <C>                  <C>           <C>            <C>             <C>         <C>
    M       055240DJ1    995.577262        5.479734             2.237443      7.717178       993.339818      6.604893%   6.204851%
    B-1     055240DK8    995.577267        5.479735             2.237442      7.717177       993.339824      6.604893%   6.204851%
    B-2     055240DL6    995.577261        5.479736             2.237440      7.717176       993.339821      6.604893%   6.204851%
    B-3     055240DM4    995.577258        5.479729             2.237442      7.717172       993.339815      6.604893%   6.204851%
    B-4     055240DN2    995.577259        5.479730             2.237447      7.717177       993.339812      6.604893%   6.204851%
    B-5     055240DP7    995.577265        5.479737             2.237448      7.717185       993.339814      6.604893%   6.204851%
    R-II    055240DR3      0.000000        0.000000             0.000000      0.000000         0.000000      6.750000%   6.750000%

------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                   Bank of America                                ADMINISTRATOR:            Kelly L. Shea
SERVICER:                                 Bank of America                                                      Bankers Trust Company
LEAD UNDERWRITER:                  Donaldson, Lufkin & Jenrette                                                    3 Park Plaza
RECORD DATE:                               June 30, 1998                                                         Irvine, CA 92614
DISTRIBUTION DATE:                         July 27, 1998                                 FACTOR INFORMATION:      (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 3 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

-----------------------------------------------------------------------------------------------------------------------------

Distribution Date:                  July 27, 1998
-----------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>                                     <C>                               <C>
MORTGAGE POOL INFORMATION:                                                      GROUP I                           GROUP II

               BEGINNING BALANCE OF POOL                                    141,014,040.14                    197,183,131.72
               LESS:                SCHEDULED PRINCIPAL                        (111,544.39)                      (650,761.73)
                                    PRINCIPAL PREPAYMENTS                    (1,659,332.68)                       (88,516.92)
                                    REPURCHASES                                       0.00                              0.00
                                    LIQUIDATIONS                                      0.00                              0.00
                                    OTHER UNSCHEDULED PRINCIPAL                       0.00                              0.00
                                                                          -----------------                 -----------------
               ENDING BALANCE OF POOL                                       139,243,163.07                    196,443,853.07
                                                                          =================                 =================

               BEGINNING NUMBER OF LOANS IN POOL                                       438                               563
               ENDING NUMBER OF LOANS IN POOL                                          433                               563

               WEIGHTED AVERAGE REMAINING TERM TO MATURITY                             348                               173
               WEIGHTED AVERAGE NET CONTRACT RATE                                7.556692%                         7.134179%

               CURRENT REALIZED LOSSES ON THE POOL                                    0.00                              0.00
               CUMULATIVE REALIZED LOSSES ON THE POOL                                 0.00                              0.00

               BEGINNING POOL BALANCE OF PREMIUM LOANS                      139,452,348.85                    185,121,395.90
               STRIPPED INTEREST RATE                                            0.563966%                         0.259273%
<CAPTION>

-----------------------------------------------------------------------------------------------------------------------------------
DELINQUENT, BANKRUPTCY,                                                                           LOANS         LOANS       LOANS
FORECLOSURE, AND REO                             30 TO 59      60 TO 89       90 PLUS               IN            IN          IN
LOAN INFORMATION                                   DAYS          DAYS           DAYS            BANKRUPTCY   FORECLOSURE     REO
-----------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------
<S>           <C>                                   <C>           <C>            <C>              <C>             <C>         <C>
GROUP I        PRINCIPAL BALANCE                    0.00          0.00           0.00             0.00            0.00        0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%       0.0000%        0.0000%          0.0000%         0.0000%     0.0000%
               --------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0             0              0                0               0           0
                    PERCENTAGE OF LOANS           0.0000%       0.0000%        0.0000%          0.0000%         0.0000%     0.0000%
-----------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------
GROUP II       PRINCIPAL BALANCE                    0.00          0.00           0.00             0.00            0.00        0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%       0.0000%        0.0000%          0.0000%         0.0000%     0.0000%
               --------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0             0              0                0               0           0
                    PERCENTAGE OF LOANS           0.0000%       0.0000%        0.0000%          0.0000%         0.0000%     0.0000%
-----------------------------------------------------------------------------------------------------------------------------------
               GROUP I BOOK VALUE OF REO PROPERTIES                                                                 NA
               GROUP II BOOK VALUE OF REO PROPERTIES                                                                NA

<CAPTION>
SERVICING INFORMATION:                                                                GROUP I                      GROUP II
<S>                                                                                  <C>                          <C>
               SERVICING FEES ACCRUED DURING THE CURRENT DUE PERIOD                  29,377.92                    66,094.20
               PLUS:                ADDITIONAL SERVICING COMPENSATION                     0.00                         0.00
               LESS:                AMTS. TO COVER PREPAYMENT INT. SHORTFALL         (6,782.32)                        0.00
                                    DELINQUENT SERVICING FEES                        (1,184.58)                    1,336.91
                                                                               ----------------                -------------
               SERVICING FEES COLLECTED FOR THE CURRENT DUE PERIOD                   21,411.02                    67,431.11
                                                                               ================                =============

               ADVANCED PRINCIPAL                                                     4,380.49                    12,595.62
               ADVANCED INTEREST                                                     34,035.55                    21,585.36

------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 4 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
Distribution Date:                  July 27, 1998
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                                OTHER                                    CUMULATIVE
                                          PREPAYMENT         UNSCHEDULED              CERTIFICATE          UNPAID         CUMULATIVE
                                          PRINCIPAL           PRINCIPAL                 INTEREST           INTEREST         REALIZED
    CLASS                                DISTRIBUTED         DISTRIBUTED               SHORTFALL          SHORTFALL           LOSSES
------------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>                       <C>                      <C>              <C>              <C>
       CLASS IA-1                       1,659,314.65              0.00                     0.00             0.00              0.00
       CLASS IA-2                               0.00              0.00                     0.00             0.00              0.00
       CLASS IA-3                               0.00              0.00                     0.00             0.00              0.00
       CLASS IA-4                               0.00              0.00                     0.00             0.00              0.00
       CLASS IA-5                               0.00              0.00                     0.00             0.00              0.00
       CLASS IA-6                               0.00              0.00                     0.00             0.00              0.00
       CLASS I-X                                0.00              0.00                     0.00             0.00              0.00
       CLASS I-PO                              18.03              0.00                     0.00             0.00              0.00
       CLASS IIA-1                         54,448.53              0.00                     0.00             0.00              0.00
       CLASS IIA-2                            543.64              0.00                     0.00             0.00              0.00
       CLASS IIA-3                              0.00              0.00                     0.00             0.00              0.00
       CLASS IIA-4                          5,755.86              0.00                     0.00             0.00              0.00
       CLASS IIA-5                         27,618.52              0.00                     0.00             0.00              0.00
       CLASS IIA-6                              0.00              0.00                     0.00             0.00              0.00
       CLASS II-X                               0.00              0.00                     0.00             0.00              0.00
       CLASS II-PO                            150.37              0.00                     0.00             0.00              0.00
       CLASS M                                  0.00              0.00                     0.00             0.00              0.00
       CLASS B-1                                0.00              0.00                     0.00             0.00              0.00
       CLASS B-2                                0.00              0.00                     0.00             0.00              0.00
       CLASS B-3                                0.00              0.00                     0.00             0.00              0.00
       CLASS B-4                                0.00              0.00                     0.00             0.00              0.00
       CLASS B-5                                0.00              0.00                     0.00             0.00              0.00

------------------------------------------------------------------------------------------------------------------------------------
    TOTALS                              1,747,849.60              0.00                     0.00             0.00              0.00
------------------------------------------------------------------------------------------------------------------------------------

<CAPTION>
               OTHER REPORTING ITEMS:
<S>                                                                                                                       <C>
               GROUP I PERCENTAGE                                                                                         97.20%
               GROUP I PREPAYMENT PERCENTAGE                                                                             100.00%
               GROUP II PERCENTAGE                                                                                        97.23%
               GROUP II PREPAYMENT PERCENTAGE                                                                            100.00%

               SUBORDINATE PRINCIPAL DISTRIBUTION AMOUNT                                                               21,126.40
               HAS THE CREDIT SUPPORT DEPLETION DATE OCCURRED                                                                 No

               BANKRUPTCY AMOUNT                                                                                      100,000.00
               FRAUD LOSS AMOUNT                                                                                    6,763,943.44
               SPECIAL HAZARD AMOUNT                                                                                4,500,664.47
               EXTRAORDINARY LOSSES FOR THE PRIOR PERIOD                                                                    0.00

               GROUP I EXTRAORDINARY LOSSES                                                                                 0.00
               GROUP II EXTRAORDINARY LOSSES                                                                                0.00


------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 5 of 5                      C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                               REMIC I
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                   DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                                 CURRENT
                 ORIGINAL          PRINCIPAL                                                   REALIZED   DEFERRED         PRINCIPAL
CLASS          FACE VALUE            BALANCE       INTEREST        PRINCIPAL           TOTAL     LOSSES   INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>                <C>                 <C>             <C>             <C>         <C>        <C>          <C>
P1-M            21,501.00          21,443.68           0.00            19.32           19.32       0.00       0.00         21,424.36
P2-M           350,133.00         346,525.77           0.00         1,235.35        1,235.35       0.00       0.00        345,290.42
X1-M *     142,084,361.67     137,683,193.26      64,532.93             0.00       64,532.93       0.00       0.00    135,402,240.48
X2-M *     187,559,494.52     184,425,609.32      39,842.65             0.00       39,842.65       0.00       0.00    180,069,472.50
Y1              71,698.81          68,725.43         386.58         1,397.24        1,783.82       0.00       0.00         67,328.19
Y2              99,676.65          94,835.16         513.69         2,158.26        2,671.95       0.00       0.00         92,676.90
Z1         143,556,266.44     139,152,993.86     782,735.59     2,281,267.65    3,064,003.24       0.00       0.00    136,871,726.21
Z2         199,253,620.42     196,002,491.92   1,061,680.16     4,395,614.87    5,457,295.03       0.00       0.00    191,606,877.05
R-I                 50.00               0.00           0.00             0.00            0.00       0.00       0.00              0.00




------------------------------------------------------------------------------------------------------------------------------------
TOTALS     343,352,946.32     335,687,015.82   1,949,691.60     6,681,692.69    8,631,384.29       0.00       0.00    329,005,323.13
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                           FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                           PASS-THROUGH
                                 PRIOR                                                          CURRENT               RATES
                             PRINCIPAL                                                        PRINCIPAL
    CLASS      CUSIP           BALANCE        INTEREST        PRINCIPAL          TOTAL          BALANCE         CURRENT       NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>                         <C>               <C>              <C>            <C>            <C>              <C>          <C>
     P1-M                   997.334077        0.000000         0.898563       0.898563       996.435515       0.000000%    0.000000%
     P2-M                   989.697544        0.000000         3.528231       3.528231       986.169313       0.000000%    0.000000%
     X1-M *                 969.024259        0.454187         0.000000       0.454187       952.970748       0.562447%    0.562447%
     X2-M *                 983.291247        0.212427         0.000000       0.212427       960.065887       0.259244%    0.259244%
     Y1                     958.529543        5.391721        19.487564      24.879285       939.041912       6.750000%    6.750000%
     Y2                     951.428057        5.153564        21.652636      26.806200       929.775443       6.500000%    6.500000%
     Z1                     969.327200        5.452465        15.891105      21.343570       953.436096       6.750000%    6.750000%
     Z2                     983.683466        5.328285        22.060402      27.388687       961.623064       6.500000%    6.500000%
     R-I    055240DQ5         0.000000        0.000000         0.000000       0.000000         0.000000       6.750000%    6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                  Bank of America                               ADMINISTRATOR:              Kelly L. Shea
SERVICER:                                Bank of America                                                       Bankers Trust Company
LEAD UNDERWRITER:                 Donaldson, Lufkin & Jenrette                                                     3 Park Plaza
RECORD DATE:                              July 31, 1998                                                          Irvine, CA 92614
DISTRIBUTION DATE:                       August 25, 1998                              FACTOR INFORMATION:         (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 1 of 5                    (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>
<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                              REMIC II
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                     PRIOR                                                                                   CURRENT
               ORIGINAL          PRINCIPAL                                                    REALIZED    DEFERRED         PRINCIPAL
CLASS        FACE VALUE            BALANCE         INTEREST        PRINCIPAL           TOTAL    LOSSES    INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>       <C>                <C>                 <C>            <C>             <C>               <C>         <C>      <C>
IA-1      96,101,504.00      91,704,685.74       515,838.85     2,279,518.14    2,795,356.99      0.00        0.00     89,425,167.60
IA-2       5,000,000.00       5,000,000.00        28,125.00             0.00       28,125.00      0.00        0.00      5,000,000.00
IA-3       9,500,000.00       9,500,000.00        53,437.50             0.00       53,437.50      0.00        0.00      9,500,000.00
IA-4      14,250,000.00      14,250,000.00        80,156.25             0.00       80,156.25      0.00        0.00     14,250,000.00
IA-5       4,887,000.00       4,887,000.00        27,489.37             0.00       27,489.37      0.00        0.00      4,887,000.00
IA-6       9,939,000.00       9,939,000.00        55,906.88             0.00       55,906.88      0.00        0.00      9,939,000.00
I-X *     11,983,709.00      11,472,521.47        64,532.93             0.00       64,532.93      0.00        0.00     11,241,407.01
I-PO          21,501.00          21,443.68             0.00            19.32           19.32      0.00        0.00         21,424.36
IIA-1    121,111,453.00     119,110,804.44       645,183.52     2,736,305.61    3,381,489.13      0.00        0.00    116,374,498.83
IIA-2      1,000,000.00         978,611.49         5,300.81        32,206.95       37,507.76      0.00        0.00        946,404.54
IIA-3      8,262,000.00       8,262,000.00        44,752.50             0.00       44,752.50      0.00        0.00      8,262,000.00
IIA-4     14,913,749.00      14,772,305.75        80,016.66        47,026.17      127,042.83      0.00        0.00     14,725,279.58
IIA-5     46,447,250.00      45,677,480.95       247,419.69       431,599.24      679,018.93      0.00        0.00     45,245,881.71
IIA-6      2,127,000.00       1,857,838.48             0.00     1,142,892.41    1,142,892.41      0.00   10,063.29        725,009.36
II-X *     7,513,508.12       7,355,565.70        39,842.65             0.00       39,842.65      0.00        0.00      7,036,088.37
II-PO        350,133.00         346,525.77             0.00         1,235.35        1,235.35      0.00        0.00        345,290.42


------------------------------------------------------------------------------------------------------------------------------------
TOTALS   333,910,590.00     326,307,696.30     1,888,002.61     6,670,803.19    8,558,805.80      0.00   10,063.29    319,646,956.40
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
-----------------------------------------------------------------------------------------------------------------------------------
                          FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                             PASS-THROUGH
                                PRIOR                                                            CURRENT                RATES
                            PRINCIPAL                                                          PRINCIPAL
CLASS     CUSIP               BALANCE        INTEREST        PRINCIPAL          TOTAL            BALANCE        CURRENT       NEXT
-----------------------------------------------------------------------------------------------------------------------------------
<S>      <C>               <C>               <C>             <C>            <C>               <C>             <C>         <C>
 IA-1    055240CT0         954.248185        5.367646        23.719901      29.087547         930.528284      6.750000%   6.750000%
 IA-2    055240CU7       1,000.000000        5.625000         0.000000       5.625000       1,000.000000      6.750000%   6.750000%
 IA-3    055240CV5       1,000.000000        5.625000         0.000000       5.625000       1,000.000000      6.750000%   6.750000%
 IA-4    055240CW3       1,000.000000        5.625000         0.000000       5.625000       1,000.000000      6.750000%   6.750000%
 IA-5    055240CX1       1,000.000000        5.624999         0.000000       5.624999       1,000.000000      6.750000%   6.750000%
 IA-6    055240CY9       1,000.000000        5.625001         0.000000       5.625001       1,000.000000      6.750000%   6.750000%
 I-X *   055240DF9         957.343129        5.625000         0.000000       5.625000         938.057409      6.750000%   0.000000%
 I-PO    055240DH5         997.334077        0.000000         0.898563       0.898563         996.435515      0.000000%   6.500000%
 IIA-1   055240CZ6         983.480930        5.327188        22.593285      27.920474         960.887645      6.500000%   6.500000%
 IIA-2   055240DA0         978.611490        5.300810        32.206950      37.507760         946.404540      6.500000%   6.500000%
 IIA-3   055240DB8       1,000.000000        5.416667         0.000000       5.416667       1,000.000000      6.500000%   6.500000%
 IIA-4   055240DC6         990.515916        5.365295         3.153209       8.518504         987.362707      6.500000%   6.500000%
 IIA-5   055240DD4         983.427026        5.326896         9.292245      14.619142         974.134781      6.500000%   6.500000%
 IIA-6   055240DE2         873.454857        0.000000       537.326004     537.326004         340.860066      6.500000%   6.500000%
 II-X    055240DG7         978.978871        5.302803         0.000000       5.302803         936.458477      6.500000%   0.000000%
 II-PO   055240DU6         989.697544        0.000000         3.528231       3.528231         986.169313      0.000000%   0.000000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                      Bank of America                         ADMINISTRATOR:        Kelly L. Shea
SERVICER:                                    Bank of America                                                Bankers Trust Company
LEAD UNDERWRITER:                     Donaldson, Lufkin & Jenrette                                              3 Park Plaza
RECORD DATE:                                  July 31, 1998                                                   Irvine, CA 92614
DISTRIBUTION DATE:                           August 25, 1998                         FACTOR INFORMATION:   (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 2 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                     DISTRIBUTIONS IN DOLLARS
                                          PRIOR                                                                              CURRENT
                     ORIGINAL         PRINCIPAL                                                REALIZED    DEFERRED        PRINCIPAL
CLASS              FACE VALUE           BALANCE      INTEREST      PRINCIPAL          TOTAL      LOSSES    INTEREST          BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>              <C>               <C>              <C>             <C>           <C>              <C>         <C>      <C>
    M            3,776,882.00      3,751,727.28     20,650.28       8,381.11      29,031.39        0.00        0.00     3,743,346.17
    B-1          2,231,794.00      2,216,929.86     12,202.44       4,952.48      17,154.92        0.00        0.00     2,211,977.38
    B-2          1,201,735.00      1,193,731.23      6,570.54       2,666.72       9,237.26        0.00        0.00     1,191,064.51
    B-3          1,030,060.00      1,023,199.61      5,631.90       2,285.76       7,917.66        0.00        0.00     1,020,913.85
    B-4            515,029.00        511,598.81      2,815.94       1,142.88       3,958.82        0.00        0.00       510,455.93
    B-5            686,706.32        682,132.73      3,754.60       1,523.84       5,278.44        0.00        0.00       680,608.89
    R-II                50.00              0.00          0.00           0.00           0.00        0.00        0.00             0.00



------------------------------------------------------------------------------------------------------------------------------------
TOTALS           9,442,256.32      9,379,319.52     51,625.70      20,952.79      72,578.49        0.00        0.00     9,358,366.73
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                                FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                       PASS-THROUGH
                          PRIOR                                                         CURRENT                        RATES
                      PRINCIPAL                                                       PRINCIPAL
CLASS   CUSIP           BALANCE      INTEREST      PRINCIPAL         TOTAL              BALANCE             CURRENT            NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>   <C>            <C>             <C>            <C>           <C>                <C>                  <C>             <C>
M     055240DJ1      993.339818      5.467547       2.219055      7.686602           991.120763           6.605046%       6.222381%
B-1   055240DK8      993.339824      5.467548       2.219058      7.686605           991.120767           6.605046%       6.222381%
B-2   055240DL6      993.339821      5.467545       2.219058      7.686603           991.120763           6.605046%       6.222381%
B-3   055240DM4      993.339815      5.467546       2.219055      7.686601           991.120760           6.605046%       6.222381%
B-4   055240DN2      993.339812      5.467537       2.219060      7.686596           991.120752           6.605046%       6.222381%
B-5   055240DP7      993.339818      5.467548       2.219056      7.686605           991.120757           6.605046%       6.222381%
R-II  055240DR3        0.000000      0.000000       0.000000      0.000000             0.000000           6.750000%       6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                           Bank of America                                   ADMINISTRATOR:                Kelly L. Shea
SERVICER:                         Bank of America                                                             Bankers Trust Company
LEAD UNDERWRITER:          Donaldson, Lufkin & Jenrette                                                           3 Park Plaza
RECORD DATE:                       July 31, 1998                                                                Irvine, CA 92614
DISTRIBUTION DATE:                August 25, 1998                                   FACTOR INFORMATION:          (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 3 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

                                                              <TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------

Distribution Date:                  August 25, 1998
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
MORTGAGE POOL INFORMATION:                                                                 GROUP I                      GROUP II
<S>                                                                                     <C>                          <C>
               BEGINNING BALANCE OF POOL                                                139,243,163.07               196,443,853.07
               LESS:                SCHEDULED PRINCIPAL                                    (111,180.93)                 (643,245.46)
                                    PRINCIPAL PREPAYMENTS                                (2,171,503.27)               (3,755,763.03)
                                    REPURCHASES                                                   0.00                         0.00
                                    LIQUIDATIONS                                                  0.00                         0.00
                                    OTHER UNSCHEDULED PRINCIPAL                                   0.00                         0.00
                                                                                        ---------------              ---------------
               ENDING BALANCE OF POOL                                                   136,960,478.87               192,044,844.58
                                                                                        ===============              ===============

               BEGINNING NUMBER OF LOANS IN POOL                                                   433                          563
               ENDING NUMBER OF LOANS IN POOL                                                      426                          554

               WEIGHTED AVERAGE REMAINING TERM TO MATURITY                                           0                          172
               WEIGHTED AVERAGE NET CONTRACT RATE                                             7.555106%                    7.134139%

               CURRENT REALIZED LOSSES ON THE POOL                                                0.00                         0.00
               CUMULATIVE REALIZED LOSSES ON THE POOL                                             0.00                         0.00

               BEGINNING POOL BALANCE OF PREMIUM LOANS                                  137,683,193.26               184,425,609.32
               STRIPPED INTEREST RATE                                                         0.562447%                    0.259244%
<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
DELINQUENT, BANKRUPTCY,                                                                       LOANS            LOANS       LOANS
FORECLOSURE, AND REO                              30 TO 59      60 TO 89      90 PLUS           IN              IN          IN
LOAN INFORMATION                                    DAYS          DAYS          DAYS        BANKRUPTCY      FORECLOSURE     REO
------------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>            <C>          <C>             <C>             <C>          <C>
GROUP I        PRINCIPAL BALANCE                    0.00           0.00         0.00            0.00            0.00         0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%        0.0000%      0.0000%         0.0000%         0.0000%      0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0              0            0               0               0            0
                    PERCENTAGE OF LOANS           0.0000%        0.0000%      0.0000%         0.0000%         0.0000%      0.0000%
------------------------------------------------------------------------------------------------------------------------------------
GROUP II       PRINCIPAL BALANCE                    0.00           0.00         0.00            0.00            0.00         0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%        0.0000%      0.0000%         0.0000%         0.0000%      0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0              0            0               0               0            0
                    PERCENTAGE OF LOANS           0.0000%        0.0000%      0.0000%         0.0000%         0.0000%      0.0000%
------------------------------------------------------------------------------------------------------------------------------------

               GROUP I BOOK VALUE OF REO PROPERTIES                                                               NA
               GROUP II BOOK VALUE OF REO PROPERTIES                                                              NA

<CAPTION>
SERVICING INFORMATION:                                                                        GROUP I                      GROUP II
<S>                                                                                          <C>                           <C>
               SERVICING FEES ACCRUED DURING THE CURRENT DUE PERIOD                          29,008.99                     65,844.97
               PLUS:                ADDITIONAL SERVICING COMPENSATION                             0.00                          0.00
               LESS:                AMTS. TO COVER PREPAYMENT INT. SHORTFALL                 (6,013.46)                    (9,707.23
                                    DELINQUENT SERVICING FEES                                  (925.47)                       931.22
                                                                                          ------------                    ----------
               SERVICING FEES COLLECTED FOR THE CURRENT DUE PERIOD                           22,070.06                     57,068.96
                                                                                          ============                    ==========

               ADVANCED PRINCIPAL                                                             3,558.56                      8,718.90
               ADVANCED INTEREST                                                             26,588.79                     15,195.81

------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 4 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                                          BA MORTGAGE SECURITIES, INC.
                                                                       MORTGAGE PASS-THROUGH CERTIFICATES
                                                                                  SERIES 1998-1

                                                                         STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------

Distribution Date:                  August 25, 1998
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                    OTHER                                   CUMULATIVE
                               PREPAYMENT        UNSCHEDULED           CERTIFICATE            UNPAID                     CUMULATIVE
                               PRINCIPAL          PRINCIPAL              INTEREST            INTEREST                     REALIZED
 CLASS                        DISTRIBUTED        DISTRIBUTED            SHORTFALL           SHORTFALL                      LOSSES
------------------------------------------------------------------------------------------------------------------------------------
<S>                          <C>                      <C>                   <C>                  <C>                           <C>
 CLASS IA-1                  2,171,484.87             0.00                  0.00                 0.00                          0.00
 CLASS IA-2                          0.00             0.00                  0.00                 0.00                          0.00
 CLASS IA-3                          0.00             0.00                  0.00                 0.00                          0.00
 CLASS IA-4                          0.00             0.00                  0.00                 0.00                          0.00
 CLASS IA-5                          0.00             0.00                  0.00                 0.00                          0.00
 CLASS IA-6                          0.00             0.00                  0.00                 0.00                          0.00
 CLASS I-X                           0.00             0.00                  0.00                 0.00                          0.00
 CLASS I-PO                         18.40             0.00                  0.00                 0.00                          0.00
 CLASS IIA-1                 2,340,308.26             0.00                  0.00                 0.00                          0.00
 CLASS IIA-2                    27,545.97             0.00                  0.00                 0.00                          0.00
 CLASS IIA-3                         0.00             0.00                  0.00                 0.00                          0.00
 CLASS IIA-4                    40,220.56             0.00                  0.00                 0.00                          0.00
 CLASS IIA-5                   369,138.32             0.00                  0.00                 0.00                          0.00
 CLASS IIA-6                   977,493.35             0.00                  0.00                 0.00                          0.00
 CLASS II-X                          0.00             0.00                  0.00                 0.00                          0.00
 CLASS II-PO                     1,056.57             0.00                  0.00                 0.00                          0.00
 CLASS M                             0.00             0.00                  0.00                 0.00                          0.00
 CLASS B-1                           0.00             0.00                  0.00                 0.00                          0.00
 CLASS B-2                           0.00             0.00                  0.00                 0.00                          0.00
 CLASS B-3                           0.00             0.00                  0.00                 0.00                          0.00
 CLASS B-4                           0.00             0.00                  0.00                 0.00                          0.00
 CLASS B-5                           0.00             0.00                  0.00                 0.00                          0.00

------------------------------------------------------------------------------------------------------------------------------------
 TOTALS                      5,927,266.30             0.00                  0.00                 0.00                          0.00
------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
               OTHER REPORTING ITEMS:
<S>                                                                                                              <C>
               GROUP I PERCENTAGE                                                                                97.17%
               GROUP I PREPAYMENT PERCENTAGE                                                                    100.00%
               GROUP II PERCENTAGE                                                                               97.23%
               GROUP II PREPAYMENT PERCENTAGE                                                                   100.00%

               SUBORDINATE PRINCIPAL DISTRIBUTION AMOUNT                                                      20,952.79
               HAS THE CREDIT SUPPORT DEPLETION DATE OCCURRED                                                        No

               BANKRUPTCY AMOUNT                                                                             100,000.00
               FRAUD LOSS AMOUNT                                                                           6,713,740.32
               SPECIAL HAZARD AMOUNT                                                                       4,500,664.47
               EXTRAORDINARY LOSSES FOR THE PRIOR PERIOD                                                           0.00

               GROUP I EXTRAORDINARY LOSSES                                                                        0.00
               GROUP II EXTRAORDINARY LOSSES                                                                       0.00


------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 5 of 5                    (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>


<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                               REMIC I
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                                  DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                                 CURRENT
                 ORIGINAL          PRINCIPAL                                                  REALIZED    DEFERRED         PRINCIPAL
CLASS          FACE VALUE            BALANCE       INTEREST       PRINCIPAL           TOTAL     LOSSES    INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>                <C>                 <C>            <C>             <C>         <C>         <C>          <C>
P1-M            21,501.00          21,424.36           0.00           19.58           19.58       0.00        0.00         21,404.78
P2-M           350,133.00         345,290.42           0.00        1,221.12        1,221.12       0.00        0.00        344,069.30
X1-M *     142,084,361.67     135,402,240.48      63,232.91            0.00       63,232.91       0.00        0.00    135,402,240.48
X2-M *     187,559,494.52     180,069,472.50      38,112.15            0.00       38,112.15       0.00        0.00    180,069,472.50
Y1              71,698.81          67,328.19         378.72        1,368.24        1,746.96       0.00        0.00         65,959.95
Y2              99,676.65          92,676.90         502.00        2,114.15        2,616.15       0.00        0.00         90,562.75
Z1         143,556,266.44     136,871,726.21     769,903.46    2,508,213.31    3,278,116.77       0.00        0.00    134,363,512.90
Z2         199,253,620.42     191,606,877.05   1,037,870.58    2,302,333.95    3,340,204.53       0.00        0.00    189,304,543.10
R-I                 50.00               0.00           0.00            0.00            0.00       0.00        0.00              0.00



------------------------------------------------------------------------------------------------------------------------------------
TOTALS     343,352,946.32     329,005,323.13   1,909,999.82    4,815,270.35    6,725,270.17       0.00        0.00    324,190,052.78
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                              FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                         PASS-THROUGH
                                     PRIOR                                                    CURRENT                  RATES
                                 PRINCIPAL                                                  PRINCIPAL
    CLASS         CUSIP            BALANCE       INTEREST      PRINCIPAL         TOTAL       BALANCE         CURRENT         NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>   <C>                       <C>              <C>            <C>            <C>         <C>              <C>            <C>
     P1-M                       996.435515       0.000000       0.910655       0.910655    995.524859       0.000000%      0.000000%
     P2-M                       986.169313       0.000000       3.487589       3.487589    982.681724       0.000000%      0.000000%
     X1-M *                     952.970748       0.445038       0.000000       0.445038    952.970748       0.560401%      0.560401%
     X2-M *                     960.065887       0.203200       0.000000       0.203200    960.065887       0.253983%      0.253983%
     Y1                         939.041912       5.282096      19.083221      24.365317    919.958751       6.750000%      6.750000%
     Y2                         929.775443       5.036285      21.210128      26.246413    908.565360       6.500000%      6.500000%
     Z1                         953.436096       5.363078      17.471988      22.835066    935.964108       6.750000%      6.750000%
     Z2                         961.623064       5.208792      11.554791      16.763583    950.068273       6.500000%      6.500000%
     R-I        055240DQ5         0.000000       0.000000       0.000000       0.000000      0.000000       6.750000%      6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                        Bank of America                     ADMINISTRATOR:           Kelly L. Shea
SERVICER:                                      Bank of America                                          Bankers Trust Company
LEAD UNDERWRITER:                        Donaldson, Lufkin & Jenrette                                        3 Park Plaza
RECORD DATE:                                   August 31, 1998                                             Irvine, CA 92614
DISTRIBUTION DATE:                            September 25, 1998                   FACTOR INFORMATION:     (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 1 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>
<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                              REMIC II
                                                   STATEMENT TO CERTIFICATEHOLDERS

-----------------------------------------------------------------------------------------------------------------------------------
                                                 DISTRIBUTIONS IN DOLLARS
                                     PRIOR                                                                                  CURRENT
                 ORIGINAL        PRINCIPAL                                                     REALIZED   DEFERRED        PRINCIPAL
 CLASS         FACE VALUE          BALANCE        INTEREST         PRINCIPAL           TOTAL     LOSSES   INTEREST          BALANCE
-----------------------------------------------------------------------------------------------------------------------------------
<S>         <C>              <C>                <C>             <C>             <C>                <C>        <C>     <C>
 IA-1       96,101,504.00    89,425,167.60      503,016.57      2,506,420.76    3,009,437.33       0.00       0.00    86,918,746.84
 IA-2        5,000,000.00     5,000,000.00       28,125.00              0.00       28,125.00       0.00       0.00     5,000,000.00
 IA-3        9,500,000.00     9,500,000.00       53,437.50              0.00       53,437.50       0.00       0.00     9,500,000.00
 IA-4       14,250,000.00    14,250,000.00       80,156.25              0.00       80,156.25       0.00       0.00    14,250,000.00
 IA-5        4,887,000.00     4,887,000.00       27,489.37              0.00       27,489.37       0.00       0.00     4,887,000.00
 IA-6        9,939,000.00     9,939,000.00       55,906.87              0.00       55,906.87       0.00       0.00     9,939,000.00
 I-X *      11,983,709.00    11,241,407.01       63,232.91              0.00       63,232.91       0.00       0.00    11,241,407.01
 I-PO           21,501.00        21,424.36            0.00             19.58           19.58       0.00       0.00        21,404.78
 IIA-1     121,111,453.00   116,374,498.83      630,361.86      1,428,344.42    2,058,706.28       0.00       0.00   114,946,154.41
 IIA-2       1,000,000.00       946,404.54        5,126.36         16,342.41       21,468.77       0.00       0.00       930,062.13
 IIA-3       8,262,000.00     8,262,000.00       44,752.50              0.00       44,752.50       0.00       0.00     8,262,000.00
 IIA-4      14,913,749.00    14,725,279.58       79,761.93         47,824.13      127,586.06       0.00       0.00    14,677,455.45
 IIA-5      46,447,250.00    45,245,881.71      245,081.86        373,379.96      618,461.82       0.00       0.00    44,872,501.75
 IIA-6       2,127,000.00       725,009.36            0.00        424,367.65      424,367.65       0.00   3,927.13       304,568.84
 II-X *      7,513,508.12     7,036,088.37       38,112.15              0.00       38,112.15       0.00       0.00     7,036,088.37
 II-PO         350,133.00       345,290.42            0.00          1,221.12        1,221.12       0.00       0.00       344,069.30


-----------------------------------------------------------------------------------------------------------------------------------
TOTALS     333,910,590.00   319,646,956.40    1,854,561.13      4,797,920.03    6,652,481.16       0.00   3,927.13   314,852,963.50
-----------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                        FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                             PASS-THROUGH
                                 PRIOR                                                        CURRENT                 RATES
                             PRINCIPAL                                                      PRINCIPAL
CLASS         CUSIP            BALANCE      INTEREST     PRINCIPAL           TOTAL            BALANCE          CURRENT          NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>     <C>     <C>             <C>          <C>             <C>               <C>               <C>           <C>
IA-1        055240CT0       930.528284      5.234222     26.080973       31.315195         904.447311        6.750000%     6.750000%
IA-2        055240CU7     1,000.000000      5.625000      0.000000        5.625000       1,000.000000        6.750000%     6.750000%
IA-3        055240CV5     1,000.000000      5.625000      0.000000        5.625000       1,000.000000        6.750000%     6.750000%
IA-4        055240CW3     1,000.000000      5.625000      0.000000        5.625000       1,000.000000        6.750000%     6.750000%
IA-5        055240CX1     1,000.000000      5.624999      0.000000        5.624999       1,000.000000        6.750000%     6.750000%
IA-6        055240CY9     1,000.000000      5.624999      0.000000        5.624999       1,000.000000        6.750000%     6.750000%
I-X *       055240DF9       938.057409      5.625000      0.000000        5.625000         938.057409        6.750000%     0.000000%
I-PO        055240DH5       996.435515      0.000000      0.910655        0.910655         995.524859        0.000000%     6.500000%
IIA-1       055240CZ6       960.887645      5.204808     11.793636       16.998444         949.094009        6.500000%     6.500000%
IIA-2       055240DA0       946.404540      5.126360     16.342410       21.468770         930.062130        6.500000%     6.500000%
IIA-3       055240DB8     1,000.000000      5.416667      0.000000        5.416667       1,000.000000        6.500000%     6.500000%
IIA-4       055240DC6       987.362707      5.348215      3.206714        8.554929         984.155993        6.500000%     6.500000%
IIA-5       055240DD4       974.134781      5.276563      8.038796       13.315359         966.095985        6.500000%     6.500000%
IIA-6       055240DE2       340.860066      0.000000    199.514644      199.514644         143.191744        6.500000%     6.500000%
II-X        055240DG7       936.458477      5.072484      0.000000        5.072484         936.458477        6.500000%     0.000000%
II-PO       055240DU6       986.169313      0.000000      3.487589        3.487589         982.681724        0.000000%     0.000000%




------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                  Bank of America                              ADMINISTRATOR:              Kelly L. Shea
SERVICER:                                Bank of America                                                      Bankers Trust Company
LEAD UNDERWRITER:                  Donaldson, Lufkin & Jenrette                                                    3 Park Plaza
RECORD DATE:                             August 31, 1998                                                         Irvine, CA 92614
DISTRIBUTION DATE:                      September 25, 1998                            FACTOR INFORMATION:         (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 2 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                    DISTRIBUTIONS IN DOLLARS
                                        PRIOR                                                                                CURRENT
                   ORIGINAL         PRINCIPAL                                                   REALIZED    DEFERRED       PRINCIPAL
CLASS            FACE VALUE           BALANCE       INTEREST         PRINCIPAL        TOTAL       LOSSES    INTEREST         BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>            <C>               <C>               <C>                <C>         <C>               <C>         <C>     <C>
  M            3,776,882.00      3,743,346.17      20,604.62          8,510.98    29,115.60         0.00        0.00    3,734,835.19
  B-1          2,231,794.00      2,211,977.38      12,175.46          5,029.21    17,204.67         0.00        0.00    2,206,948.17
  B-2          1,201,735.00      1,191,064.51       6,556.01          2,708.04     9,264.05         0.00        0.00    1,188,356.47
  B-3          1,030,060.00      1,020,913.85       5,619.45          2,321.18     7,940.63         0.00        0.00    1,018,592.67
  B-4            515,029.00        510,455.93       2,809.72          1,160.59     3,970.31         0.00        0.00      509,295.34
  B-5            686,706.32        680,608.89       3,746.30          1,547.45     5,293.75         0.00        0.00      679,061.44
  R-II                50.00              0.00           0.00              0.00         0.00         0.00        0.00            0.00




-----------------------------------------------------------------------------------------------------------------------------------
TOTALS         9,442,256.32      9,358,366.73      51,511.56         21,277.45    72,789.01         0.00        0.00  9,337,089.28
------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
                          FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                           PASS-THROUGH
                                  PRIOR                                                       CURRENT                 RATES
                              PRINCIPAL                                                     PRINCIPAL
  CLASS       CUSIP             BALANCE       INTEREST     PRINCIPAL           TOTAL          BALANCE          CURRENT         NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>     <C>       <C>              <C>           <C>             <C>            <C>               <C>          <C>
  M         055240DJ1         991.120763       5.455458      2.253441        7.708899       988.867322        6.605197%    6.225163%
  B-1       055240DK8         991.120767       5.455459      2.253438        7.708897       988.867328        6.605197%    6.225163%
  B-2       055240DL6         991.120763       5.455454      2.253442        7.708896       988.867321        6.605197%    6.225163%
  B-3       055240DM4         991.120760       5.455459      2.253442        7.708900       988.867318        6.605197%    6.225163%
  B-4       055240DN2         991.120752       5.455460      2.253446        7.708906       988.867307        6.605197%    6.225163%
  B-5       055240DP7         991.120757       5.455462      2.253438        7.708899       988.867320        6.605197%    6.225163%
  R-II      055240DR3           0.000000       0.000000      0.000000        0.000000         0.000000        6.750000%    6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                    Bank of America                               ADMINISTRATOR:           Kelly L. Shea
SERVICER:                                  Bank of America                                                     Bankers Trust Company
LEAD UNDERWRITER:                    Donaldson, Lufkin & Jenrette                                                   3 Park Plaza
RECORD DATE:                               August 31, 1998                                                        Irvine, CA 92614
DISTRIBUTION DATE:                        September 25, 1998                             FACTOR INFORMATION:       (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 3 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
Distribution Date:                  September 25, 1998
------------------------------------------------------------------------------------------------------------------------------------
MORTGAGE POOL INFORMATION:                                                                  GROUP I                     GROUP II
<S>                                                                                     <C>                          <C>
               BEGINNING BALANCE OF POOL                                                136,960,478.87               192,044,844.58
               LESS:                SCHEDULED PRINCIPAL                                    (109,934.07)                 (641,900.06)
                                    PRINCIPAL PREPAYMENTS                                (2,399,667.05)               (1,663,769.17)
                                    REPURCHASES                                                   0.00                         0.00
                                    LIQUIDATIONS                                                  0.00                         0.00
                                    OTHER UNSCHEDULED PRINCIPAL                                   0.00                         0.00
                                                                                        --------------              ---------------
               ENDING BALANCE OF POOL                                                   134,450,877.75               189,739,175.35
                                                                                        ==============              ===============

               BEGINNING NUMBER OF LOANS IN POOL                                                   426                          554
               ENDING NUMBER OF LOANS IN POOL                                                      419                          549

               WEIGHTED AVERAGE REMAINING TERM TO MATURITY                                           0                          171
               WEIGHTED AVERAGE NET CONTRACT RATE                                             7.552969%                    7.127566%

               CURRENT REALIZED LOSSES ON THE POOL                                                0.00                         0.00
               CUMULATIVE REALIZED LOSSES ON THE POOL                                             0.00                         0.00

               BEGINNING POOL BALANCE OF PREMIUM LOANS                                  135,402,240.48               180,069,472.50
               STRIPPED INTEREST RATE                                                         0.560401%                    0.253983%
<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
DELINQUENT, BANKRUPTCY,                                                                         LOANS           LOANS        LOANS
FORECLOSURE, AND REO                             30 TO 59       60 TO 89        90 PLUS           IN             IN            IN
LOAN INFORMATION                                   DAYS           DAYS           DAYS         BANKRUPTCY     FORECLOSURE      REO
------------------------------------------------------------------------------------------------------------------------------------
<S>                                                 <C>            <C>              <C>           <C>              <C>         <C>
GROUP I        PRINCIPAL BALANCE                    0.00           0.00             0.00          0.00             0.00        0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%        0.0000%          0.0000%       0.0000%          0.0000%     0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0              0                0             0                0           0
                    PERCENTAGE OF LOANS           0.0000%        0.0000%          0.0000%       0.0000%          0.0000%     0.0000%
------------------------------------------------------------------------------------------------------------------------------------
GROUP II       PRINCIPAL BALANCE                    0.00           0.00             0.00          0.00             0.00        0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%        0.0000%          0.0000%       0.0000%          0.0000%     0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0              0                0             0                0           0
                    PERCENTAGE OF LOANS           0.0000%        0.0000%          0.0000%       0.0000%          0.0000%     0.0000%
------------------------------------------------------------------------------------------------------------------------------------

               GROUP I BOOK VALUE OF REO PROPERTIES                                                                  NA
               GROUP II BOOK VALUE OF REO PROPERTIES                                                                 NA
<CAPTION>
<S>                                                                                      <C>                          <C>
SERVICING INFORMATION:                                                                        GROUP I                     GROUP II
               SERVICING FEES ACCRUED DURING THE CURRENT DUE PERIOD                          28,533.43                    64,192.22
               PLUS:                ADDITIONAL SERVICING COMPENSATION                             0.00                         0.00
               LESS:                AMTS. TO COVER PREPAYMENT INT. SHORTFALL                (11,000.11)                   (4,165.54)
                                    DELINQUENT SERVICING FEES                                  (721.11)                      775.09
                                                                                         --------------                 ------------
               SERVICING FEES COLLECTED FOR THE CURRENT DUE PERIOD                           16,812.21                    60,801.77
                                                                                         ==============                 ============

               ADVANCED PRINCIPAL                                                             2,742.68                     7,471.02
               ADVANCED INTEREST                                                             20,504.54                    12,791.40

------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 4 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------

Distribution Date:                  September 25, 1998
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                                OTHER                                     CUMULATIVE
                                         PREPAYMENT          UNSCHEDULED               CERTIFICATE          UNPAID       CUMULATIVE
                                          PRINCIPAL           PRINCIPAL                 INTEREST           INTEREST       REALIZED
    CLASS                                DISTRIBUTED         DISTRIBUTED                SHORTFALL         SHORTFALL        LOSSES
------------------------------------------------------------------------------------------------------------------------------------
<S>                                      <C>                      <C>                      <C>                <C>            <C>
       CLASS IA-1                        2,399,648.30             0.00                     0.00               0.00           0.00
       CLASS IA-2                                0.00             0.00                     0.00               0.00           0.00
       CLASS IA-3                                0.00             0.00                     0.00               0.00           0.00
       CLASS IA-4                                0.00             0.00                     0.00               0.00           0.00
       CLASS IA-5                                0.00             0.00                     0.00               0.00           0.00
       CLASS IA-6                                0.00             0.00                     0.00               0.00           0.00
       CLASS I-X                                 0.00             0.00                     0.00               0.00           0.00
       CLASS I-PO                               18.75             0.00                     0.00               0.00           0.00
       CLASS IIA-1                       1,037,074.61             0.00                     0.00               0.00           0.00
       CLASS IIA-2                          11,865.69             0.00                     0.00               0.00           0.00
       CLASS IIA-3                               0.00             0.00                     0.00               0.00           0.00
       CLASS IIA-4                          34,723.55             0.00                     0.00               0.00           0.00
       CLASS IIA-5                         271,099.09             0.00                     0.00               0.00           0.00
       CLASS IIA-6                         308,119.60             0.00                     0.00               0.00           0.00
       CLASS II-X                                0.00             0.00                     0.00               0.00           0.00
       CLASS II-PO                             886.62             0.00                     0.00               0.00           0.00
       CLASS M                                   0.00             0.00                     0.00               0.00           0.00
       CLASS B-1                                 0.00             0.00                     0.00               0.00           0.00
       CLASS B-2                                 0.00             0.00                     0.00               0.00           0.00
       CLASS B-3                                 0.00             0.00                     0.00               0.00           0.00
       CLASS B-4                                 0.00             0.00                     0.00               0.00           0.00
       CLASS B-5                                 0.00             0.00                     0.00               0.00           0.00

------------------------------------------------------------------------------------------------------------------------------------
    TOTALS                               4,063,436.22             0.00                     0.00               0.00           0.00
------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
               OTHER REPORTING ITEMS:
<S>                                                                                                                     <C>
               GROUP I PERCENTAGE                                                                                       97.12%
               GROUP I PREPAYMENT PERCENTAGE                                                                           100.00%
               GROUP II PERCENTAGE                                                                                      97.17%
               GROUP II PREPAYMENT PERCENTAGE                                                                          100.00%

               SUBORDINATE PRINCIPAL DISTRIBUTION AMOUNT                                                             21,277.45
               HAS THE CREDIT SUPPORT DEPLETION DATE OCCURRED                                                               No

               BANKRUPTCY AMOUNT                                                                                    100,000.00
               FRAUD LOSS AMOUNT                                                                                  6,580,106.47
               SPECIAL HAZARD AMOUNT                                                                              4,500,664.47
               EXTRAORDINARY LOSSES FOR THE PRIOR PERIOD                                                                  0.00

               GROUP I EXTRAORDINARY LOSSES                                                                               0.00
               GROUP II EXTRAORDINARY LOSSES                                                                              0.00


------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 5 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company

</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                               REMIC I
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                    DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                                 CURRENT
                 ORIGINAL          PRINCIPAL                                                   REALIZED    DEFERRED        PRINCIPAL
CLASS          FACE VALUE            BALANCE       INTEREST        PRINCIPAL           TOTAL     LOSSES    INTEREST          BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>                <C>                 <C>             <C>             <C>         <C>         <C>         <C>
 P1-M           21,501.00          21,404.78           0.00            19.54           19.54       0.00        0.00        21,385.24
 P2-M          350,133.00         344,069.30           0.00         1,270.70        1,270.70       0.00        0.00       342,798.60
 X1-M *    142,084,361.67     132,894,480.77      61,694.34             0.00       61,694.34       0.00        0.00   131,059,091.79
 X2-M *    187,559,494.52     177,805,919.41      37,509.47             0.00       37,509.47       0.00        0.00   175,296,696.88
 Y1             71,698.81          65,959.95         371.02           582.34          953.36       0.00        0.00        65,377.61
 Y2             99,676.65          90,562.75         490.55         1,029.55        1,520.10       0.00        0.00        89,533.20
 Z1        143,556,266.44     134,363,512.90     755,794.76     1,836,539.16    2,592,333.92       0.00        0.00   132,526,973.74
 Z2        199,253,620.42     189,304,543.10   1,025,399.61     2,551,387.54    3,576,787.15       0.00        0.00   186,753,155.56
 R-I                50.00               0.00           0.00             0.00            0.00       0.00        0.00             0.00


------------------------------------------------------------------------------------------------------------------------------------
TOTALS     343,352,946.32     324,190,052.78   1,881,259.75     4,390,828.83    6,272,088.58       0.00        0.00   319,799,223.95
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                        FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                               PASS-THROUGH
                              PRIOR                                                              CURRENT             RATES
                          PRINCIPAL                                                            PRINCIPAL
CLASS        CUSIP          BALANCE           INTEREST         PRINCIPAL           TOTAL         BALANCE         CURRENT        NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>                      <C>                  <C>               <C>             <C>           <C>              <C>         <C>
  P1-M                   995.524859           0.000000          0.908795        0.908795      994.616064       0.000000%   0.000000%
  P2-M                   982.681724           0.000000          3.629192        3.629192      979.052531       0.000000%   0.000000%
  X1-M *                 935.320954           0.434209          0.000000        0.434209      922.403354       0.557083%   0.557083%
  X2-M *                 947.997433           0.199987          0.000000        0.199987      934.619158       0.253149%   0.253149%
  Y1                     919.958751           5.174702          8.121962       13.296664      911.836720       6.750000%   6.750000%
  Y2                     908.565360           4.921413         10.328872       15.250286      898.236461       6.500000%   6.500000%
  Z1                     935.964108           5.264798         12.793166       18.057964      923.170942       6.750000%   6.750000%
  Z2                     950.068273           5.146203         12.804724       17.950927      937.263550       6.500000%   6.500000%
  R-I       055240DQ5      0.000000           0.000000          0.000000        0.000000        0.000000       6.750000%   6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                     Bank of America                            ADMINISTRATOR:           Kelly L. Shea
SERVICER:                                   Bank of America                                                 Bankers Trust Company
LEAD UNDERWRITER:                     Donaldson, Lufkin & Jenrette                                               3 Park Plaza
RECORD DATE:                               September 30, 1998                                                  Irvine, CA 92614
DISTRIBUTION DATE:                          October 26, 1998                           FACTOR INFORMATION:      (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 1 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                              REMIC II
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                   DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                                 CURRENT
                 ORIGINAL          PRINCIPAL                                                   REALIZED   DEFERRED         PRINCIPAL
CLASS          FACE VALUE            BALANCE       INTEREST        PRINCIPAL           TOTAL     LOSSES   INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>                <C>               <C>            <C>             <C>                <C>        <C>      <C>
  IA-1      96,101,504.00      86,918,746.84     488,917.95     1,833,920.13    2,322,838.08       0.00       0.00     85,084,826.71
  IA-2       5,000,000.00       5,000,000.00      28,125.00             0.00       28,125.00       0.00       0.00      5,000,000.00
  IA-3       9,500,000.00       9,500,000.00      53,437.50             0.00       53,437.50       0.00       0.00      9,500,000.00
  IA-4      14,250,000.00      14,250,000.00      80,156.25             0.00       80,156.25       0.00       0.00     14,250,000.00
  IA-5       4,887,000.00       4,887,000.00      27,489.38             0.00       27,489.38       0.00       0.00      4,887,000.00
  IA-6       9,939,000.00       9,939,000.00      55,906.88             0.00       55,906.88       0.00       0.00      9,939,000.00
  I-X *     11,983,709.00      10,967,882.56      61,694.34             0.00       61,694.34       0.00       0.00     10,771,457.61
  I-PO          21,501.00          21,404.78           0.00            19.54           19.54       0.00       0.00         21,385.24
  IIA-1    121,111,453.00     114,946,154.41     622,625.00     1,583,189.68    2,205,814.68       0.00       0.00    113,362,964.73
  IIA-2      1,000,000.00         930,062.13       5,037.84        18,212.94       23,250.78       0.00       0.00        911,849.19
  IIA-3      8,262,000.00       8,262,000.00      44,752.50             0.00       44,752.50       0.00       0.00      8,262,000.00
  IIA-4     14,913,749.00      14,677,455.45      79,502.88        48,107.54      127,610.42       0.00       0.00     14,629,347.91
  IIA-5     46,447,250.00      44,872,501.75     243,059.38       581,760.88      824,820.26       0.00       0.00     44,290,740.87
  IIA-6      2,127,000.00         304,568.84           0.00       304,568.84      304,568.84       0.00   1,649.74          1,649.74
  II-X *     7,513,508.12       6,924,824.74      37,509.47             0.00       37,509.47       0.00       0.00      6,792,293.10
  II-PO        350,133.00         344,069.30           0.00         1,270.70        1,270.70       0.00       0.00        342,798.60

------------------------------------------------------------------------------------------------------------------------------------
TOTALS     333,910,590.00     314,852,963.50   1,828,214.37     4,371,050.25    6,199,264.62       0.00   1,649.74    310,483,562.99
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                         FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                            PASS-THROUGH
                                PRIOR                                                         CURRENT                RATES
                            PRINCIPAL                                                       PRINCIPAL
CLASS     CUSIP               BALANCE         INTEREST       PRINCIPAL          TOTAL         BALANCE        CURRENT        NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>     <C>                <C>                <C>            <C>            <C>            <C>              <C>          <C>
IA-1    055240CT0          904.447311         5.087516       19.083157      24.170674      885.364153       6.750000%    6.750000%
IA-2    055240CU7        1,000.000000         5.625000        0.000000       5.625000    1,000.000000       6.750000%    6.750000%
IA-3    055240CV5        1,000.000000         5.625000        0.000000       5.625000    1,000.000000       6.750000%    6.750000%
IA-4    055240CW3        1,000.000000         5.625000        0.000000       5.625000    1,000.000000       6.750000%    6.750000%
IA-5    055240CX1        1,000.000000         5.625001        0.000000       5.625001    1,000.000000       6.750000%    6.750000%
IA-6    055240CY9        1,000.000000         5.625001        0.000000       5.625001    1,000.000000       6.750000%    6.750000%
I-X *   055240DF9          915.232718         5.625000        0.000000       5.625000      898.841720       6.750000%    0.000000%
I-PO    055240DH5          995.524859         0.000000        0.908795       0.908795      994.616064       0.000000%    6.500000%
IIA-1   055240CZ6          949.094009         5.140926       13.072171      18.213097      936.021837       6.500000%    6.500000%
IIA-2   055240DA0          930.062130         5.037840       18.212940      23.250780      911.849190       6.500000%    6.500000%
IIA-3   055240DB8        1,000.000000         5.416667        0.000000       5.416667    1,000.000000       6.500000%    6.500000%
IIA-4   055240DC6          984.155993         5.330845        3.225718       8.556562      980.930275       6.500000%    6.500000%
IIA-5   055240DD4          966.095985         5.233020       12.525195      17.758215      953.570790       6.500000%    6.500000%
IIA-6   055240DE2          143.191744         0.000000      143.191744     143.191744        0.775618       6.500000%    6.500000%
II-X    055240DG7          921.649997         4.992271        0.000000       4.992271      904.010882       6.500000%    0.000000%
II-PO   055240DU6          982.681724         0.000000        3.629192       3.629192      979.052531       0.000000%    0.000000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                      Bank of America                               ADMINISTRATOR:          Kelly L. Shea
SERVICER:                                    Bank of America                                                   Bankers Trust Company
LEAD UNDERWRITER:                      Donaldson, Lufkin & Jenrette                                                 3 Park Plaza
RECORD DATE:                                September 30, 1998                                                    Irvine, CA 92614
DISTRIBUTION DATE:                           October 26, 1998                              FACTOR INFORMATION:     (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 2 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                    DISTRIBUTIONS IN DOLLARS
                                        PRIOR                                                                                CURRENT
                 ORIGINAL           PRINCIPAL                                                 REALIZED     DEFERRED        PRINCIPAL
CLASS          FACE VALUE             BALANCE       INTEREST       PRINCIPAL        TOTAL       LOSSES     INTEREST          BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>          <C>                 <C>               <C>              <C>         <C>               <C>          <C>      <C>
 M           3,776,882.00        3,734,835.19      20,558.25        8,571.33    29,129.58         0.00         0.00     3,726,263.86
 B-1         2,231,794.00        2,206,948.17      12,148.06        5,064.88    17,212.94         0.00         0.00     2,201,883.29
 B-2         1,201,735.00        1,188,356.47       6,541.26        2,727.24     9,268.50         0.00         0.00     1,185,629.23
 B-3         1,030,060.00        1,018,592.67       5,606.80        2,337.64     7,944.44         0.00         0.00     1,016,255.03
 B-4           515,029.00          509,295.34       2,803.40        1,168.82     3,972.22         0.00         0.00       508,126.52
 B-5           686,706.32          679,061.44       3,737.87        1,558.41     5,296.28         0.00         0.00       677,503.03
 R-II               50.00                0.00           0.00            0.00         0.00         0.00         0.00             0.00

------------------------------------------------------------------------------------------------------------------------------------
TOTALS       9,442,256.32        9,337,089.28      51,395.64       21,428.32    72,823.96         0.00         0.00     9,315,660.96
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                             FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                         PASS-THROUGH
                                  PRIOR                                                       CURRENT                 RATES
                              PRINCIPAL                                                     PRINCIPAL
CLASS         CUSIP             BALANCE         INTEREST      PRINCIPAL          TOTAL         BALANCE        CURRENT          NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>               <C>               <C>            <C>            <C>           <C>             <C>            <C>
M           055240DJ1         988.867322        5.443180       2.269420       7.712600      986.597903      6.605352%      6.231095%
B-1         055240DK8         988.867328        5.443182       2.269421       7.712603      986.597907      6.605352%      6.231095%
B-2         055240DL6         988.867321        5.443180       2.269419       7.712599      986.597902      6.605352%      6.231095%
B-3         055240DM4         988.867318        5.443178       2.269421       7.712599      986.597897      6.605352%      6.231095%
B-4         055240DN2         988.867307        5.443189       2.269426       7.712614      986.597881      6.605352%      6.231095%
B-5         055240DP7         988.867320        5.443186       2.269398       7.712584      986.597922      6.605352%      6.231095%
R-II        055240DR3           0.000000        0.000000       0.000000       0.000000        0.000000      6.750000%      6.750000%

------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                     Bank of America                            ADMINISTRATOR:             Kelly L. Shea
SERVICER:                                   Bank of America                                                    Bankers Trust Company
LEAD UNDERWRITER:                     Donaldson, Lufkin & Jenrette                                                  3 Park Plaza
RECORD DATE:                               September 30, 1998                                                     Irvine, CA 92614
DISTRIBUTION DATE:                          October 26, 1998                           FACTOR INFORMATION:         (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 3 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------

Distribution Date:                October 26, 1998
------------------------------------------------------------------------------------------------------------------------------------
MORTGAGE POOL INFORMATION:                                                                  GROUP I                      GROUP II
<S>                                                                                     <C>                          <C>
               BEGINNING BALANCE OF POOL                                                134,450,877.75               189,739,175.35
               LESS:              SCHEDULED PRINCIPAL                                      (109,393.14)                 (640,193.99)
                                  PRINCIPAL PREPAYMENTS                                  (1,727,747.89)               (1,913,493.81)
                                  REPURCHASES                                                     0.00                         0.00
                                  LIQUIDATIONS                                                    0.00                         0.00
                                  OTHER UNSCHEDULED PRINCIPAL                                     0.00                         0.00
                                                                                        --------------              ----------------
               ENDING BALANCE OF POOL                                                   132,613,736.72               187,185,487.55
                                                                                        ==============              ================

               BEGINNING NUMBER OF LOANS IN POOL                                                   419                          549
               ENDING NUMBER OF LOANS IN POOL                                                      413                          544

               WEIGHTED AVERAGE REMAINING TERM TO MATURITY                                         345                          170
               WEIGHTED AVERAGE NET CONTRACT RATE                                             7.549559%                    7.126048%

               CURRENT REALIZED LOSSES ON THE POOL                                                0.00                         0.00
               CUMULATIVE REALIZED LOSSES ON THE POOL                                             0.00                         0.00

               BEGINNING POOL BALANCE OF PREMIUM LOANS                                  132,894,480.77               177,805,919.41
               STRIPPED INTEREST RATE                                                         0.557083%                    0.253149%
<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
DELINQUENT, BANKRUPTCY,                                                                   LOANS          LOANS              LOANS
FORECLOSURE, AND REO                             30 TO 59     60 TO 89     90 PLUS         IN             IN                  IN
LOAN INFORMATION                                   DAYS         DAYS         DAYS      BANKRUPTCY     FORECLOSURE            REO
------------------------------------------------------------------------------------------------------------------------------------
<S>                                                 <C>          <C>          <C>         <C>               <C>                <C>
GROUP I        PRINCIPAL BALANCE                    0.00         0.00         0.00        0.00              0.00               0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%      0.0000%      0.0000%     0.0000%           0.0000%            0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0            0            0           0                 0                  0
                    PERCENTAGE OF LOANS           0.0000%      0.0000%      0.0000%     0.0000%           0.0000%            0.0000%
------------------------------------------------------------------------------------------------------------------------------------
GROUP II       PRINCIPAL BALANCE                    0.00         0.00         0.00        0.00              0.00               0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%      0.0000%      0.0000%     0.0000%           0.0000%            0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0            0            0           0                 0                  0
                    PERCENTAGE OF LOANS           0.0000%      0.0000%      0.0000%     0.0000%           0.0000%            0.0000%
------------------------------------------------------------------------------------------------------------------------------------

               GROUP I BOOK VALUE OF REO PROPERTIES                                                            NA
               GROUP II BOOK VALUE OF REO PROPERTIES                                                           NA
<CAPTION>
SERVICING INFORMATION:                                                                        GROUP I                    GROUP II
<S>                                                                                          <C>                          <C>
               SERVICING FEES ACCRUED DURING THE CURRENT DUE PERIOD                          28,010.59                    63,342.37
               PLUS:              ADDITIONAL SERVICING COMPENSATION                               0.00                         0.00
               LESS:              AMTS. TO COVER PREPAYMENT INT. SHORTFALL                   (4,510.31)                   (3,700.30)
                                  DELINQUENT SERVICING FEES                                    (692.19)                      411.93
                                                                                         -------------                -------------
               SERVICING FEES COLLECTED FOR THE CURRENT DUE PERIOD                           22,808.09                    60,054.00
                                                                                         =============                =============

               ADVANCED PRINCIPAL                                                             2,684.63                     3,567.99
               ADVANCED INTEREST                                                             20,073.35                     6,049.72

------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 4 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------

Distribution Date:                October 26, 1998
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                            OTHER                                       CUMULATIVE
                                      PREPAYMENT         UNSCHEDULED                  CERTIFICATE         UNPAID          CUMULATIVE
                                       PRINCIPAL          PRINCIPAL                     INTEREST         INTEREST          REALIZED
    CLASS                             DISTRIBUTED        DISTRIBUTED                   SHORTFALL         SHORTFALL          LOSSES
------------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>                     <C>                          <C>             <C>              <C>
  CLASS IA-1                        1,727,729.48               0.00                         0.00            0.00             0.00
  CLASS IA-2                                0.00               0.00                         0.00            0.00             0.00
  CLASS IA-3                                0.00               0.00                         0.00            0.00             0.00
  CLASS IA-4                                0.00               0.00                         0.00            0.00             0.00
  CLASS IA-5                                0.00               0.00                         0.00            0.00             0.00
  CLASS IA-6                                0.00               0.00                         0.00            0.00             0.00
  CLASS I-X                                 0.00               0.00                         0.00            0.00             0.00
  CLASS I-PO                               18.41               0.00                         0.00            0.00             0.00
  CLASS IIA-1                       1,194,044.78               0.00                         0.00            0.00             0.00
  CLASS IIA-2                          13,736.24               0.00                         0.00            0.00             0.00
  CLASS IIA-3                               0.00               0.00                         0.00            0.00             0.00
  CLASS IIA-4                          36,282.80               0.00                         0.00            0.00             0.00
  CLASS IIA-5                         438,765.20               0.00                         0.00            0.00             0.00
  CLASS IIA-6                         229,706.42               0.00                         0.00            0.00             0.00
  CLASS II-X                                0.00               0.00                         0.00            0.00             0.00
  CLASS II-PO                             958.36               0.00                         0.00            0.00             0.00
  CLASS M                                   0.00               0.00                         0.00            0.00             0.00
  CLASS B-1                                 0.00               0.00                         0.00            0.00             0.00
  CLASS B-2                                 0.00               0.00                         0.00            0.00             0.00
  CLASS B-3                                 0.00               0.00                         0.00            0.00             0.00
  CLASS B-4                                 0.00               0.00                         0.00            0.00             0.00
  CLASS B-5                                 0.00               0.00                         0.00            0.00             0.00

----------------------------------------------------------------------------------------------------------------------------------
    TOTALS                          3,641,241.70               0.00                         0.00            0.00             0.00
----------------------------------------------------------------------------------------------------------------------------------

               OTHER REPORTING ITEMS:

               GROUP I PERCENTAGE                                                                                    97.07%
               GROUP I PREPAYMENT PERCENTAGE                                                                        100.00%
               GROUP II PERCENTAGE                                                                                   97.15%
               GROUP II PREPAYMENT PERCENTAGE                                                                       100.00%

               SUBORDINATE PRINCIPAL DISTRIBUTION AMOUNT                                                          21,428.32
               HAS THE CREDIT SUPPORT DEPLETION DATE OCCURRED                                                            No

               BANKRUPTCY AMOUNT                                                                                 100,000.00
               FRAUD LOSS AMOUNT                                                                               6,483,801.06
               SPECIAL HAZARD AMOUNT                                                                           4,500,664.47
               EXTRAORDINARY LOSSES FOR THE PRIOR PERIOD                                                               0.00

               GROUP I EXTRAORDINARY LOSSES                                                                            0.00
               GROUP II EXTRAORDINARY LOSSES                                                                           0.00


------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 5 of 5                    (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                               REMIC I
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                      PRIOR                                                                                  CURRENT
                 ORIGINAL         PRINCIPAL                                                   REALIZED    DEFERRED         PRINCIPAL
CLASS          FACE VALUE           BALANCE       INTEREST       PRINCIPAL           TOTAL      LOSSES    INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>               <C>                 <C>            <C>             <C>          <C>         <C>          <C>
 P1-M           21,501.00         21,385.24           0.00           19.52           19.52        0.00        0.00         21,365.72
 P2-M          350,133.00        342,798.60           0.00        1,309.86        1,309.86        0.00        0.00        341,488.74
 X1-M *    142,084,361.67    131,059,091.79      60,589.45            0.00       60,589.45        0.00        0.00    127,216,598.39
 X2-M *    187,559,494.52    175,296,696.88      36,791.59            0.00       36,791.59        0.00        0.00    167,394,907.71
 Y1             71,698.81         65,377.61         367.75        2,925.57        3,293.32        0.00        0.00         62,452.04
 Y2             99,676.65         89,533.20         484.97        4,221.15        4,706.12        0.00        0.00         85,312.05
 Z1        143,556,266.44    132,526,973.74     745,464.23    3,841,210.45    4,586,674.68        0.00        0.00    128,685,763.29
 Z2        199,253,620.42    186,753,155.56   1,011,579.59    7,941,599.42    8,953,179.01        0.00        0.00    178,811,556.14
 R-I                50.00              0.00           0.00            0.00            0.00        0.00        0.00              0.00



------------------------------------------------------------------------------------------------------------------------------------
TOTALS     343,352,946.32    319,799,223.95   1,855,277.58   11,791,285.97   13,646,563.55        0.00        0.00    308,007,937.98
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                               FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                         PASS-THROUGH
                                    PRIOR                                                         CURRENT                RATES
                                PRINCIPAL                                                       PRINCIPAL
CLASS        CUSIP                BALANCE        INTEREST        PRINCIPAL          TOTAL         BALANCE       CURRENT         NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>                            <C>               <C>              <C>            <C>           <C>            <C>          <C>
P1-M                           994.616064        0.000000         0.907865       0.907865      993.708200     0.000000%    0.000000%
P2-M                           979.052531        0.000000         3.741036       3.741036      975.311496     0.000000%    0.000000%
X1-M *                         922.403354        0.426433         0.000000       0.426433      895.359608     0.554768%    0.554768%
X2-M *                         934.619158        0.196160         0.000000       0.196160      892.489650     0.251858%    0.251858%
Y1                             911.836720        5.129095        40.803609      45.932703      871.033115     6.750000%    6.750000%
Y2                             898.236461        4.865432        42.348423      47.213856      855.888027     6.500000%    6.500000%
Z1                             923.170942        5.192837        26.757525      31.950362      896.413417     6.750000%    6.750000%
Z2                             937.263550        5.076844        39.856738      44.933583      897.406811     6.500000%    6.500000%
R-I         055240DQ5            0.000000        0.000000         0.000000       0.000000        0.000000     6.750000%    6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                           Bank of America                       ADMINISTRATOR:          Kelly L. Shea
SERVICER:                                         Bank of America                                           Bankers Trust Company
LEAD UNDERWRITER:                          Donaldson, Lufkin & Jenrette                                         3 Park Plaza
RECORD DATE:                                     October 30, 1998                                             Irvine, CA 92614
DISTRIBUTION DATE:                               November 25, 1998                      FACTOR INFORMATION:    (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 1 of 5                    (C) COPYRIGHT 1998 Bankers Trust Company

</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                              REMIC II
                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                      PRIOR                                                                                  CURRENT
                 ORIGINAL         PRINCIPAL                                                   REALIZED    DEFERRED         PRINCIPAL
CLASS          FACE VALUE           BALANCE      INTEREST         PRINCIPAL           TOTAL     LOSSES    INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>               <C>              <C>             <C>             <C>                <C>         <C>      <C>
IA-1        96,101,504.00     85,084,826.71    478,602.15      3,840,958.56    4,319,560.71       0.00        0.00     81,243,868.15
IA-2         5,000,000.00      5,000,000.00     28,125.00              0.00       28,125.00       0.00        0.00      5,000,000.00
IA-3         9,500,000.00      9,500,000.00     53,437.50              0.00       53,437.50       0.00        0.00      9,500,000.00
IA-4        14,250,000.00     14,250,000.00     80,156.25              0.00       80,156.25       0.00        0.00     14,250,000.00
IA-5         4,887,000.00      4,887,000.00     27,489.38              0.00       27,489.38       0.00        0.00      4,887,000.00
IA-6         9,939,000.00      9,939,000.00     55,906.88              0.00       55,906.88       0.00        0.00      9,939,000.00
I-X *       11,983,709.00     10,771,457.61     60,589.44              0.00       60,589.44       0.00        0.00     10,380,320.55
I-PO            21,501.00         21,385.24          0.00             19.52           19.52       0.00        0.00         21,365.72
IIA-1      121,111,453.00    113,362,964.73    614,049.39      4,952,855.21    5,566,904.60       0.00        0.00    108,410,109.52
IIA-2        1,000,000.00        911,849.19      4,939.18         59,062.97       64,002.15       0.00        0.00        852,786.22
IIA-3        8,262,000.00      8,262,000.00     44,752.50              0.00       44,752.50       0.00        0.00      8,262,000.00
IIA-4       14,913,749.00     14,629,347.91     79,242.30         47,110.25      126,352.55       0.00        0.00     14,582,237.66
IIA-5       46,447,250.00     44,290,740.87    239,908.18      2,867,298.59    3,107,206.77       0.00        0.00     41,423,442.28
IIA-6        2,127,000.00          1,649.74          0.00          1,649.74        1,649.74       0.00        8.94              8.94
II-X *       7,513,508.12      6,792,293.10     36,791.59              0.00       36,791.59       0.00        0.00      6,350,437.35
II-PO          350,133.00        342,798.60          0.00          1,309.86        1,309.86       0.00        0.00        341,488.74





------------------------------------------------------------------------------------------------------------------------------------
TOTALS     333,910,590.00    310,483,562.99  1,803,989.74     11,770,264.70   13,574,254.44       0.00        8.94    298,713,307.23
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                       FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                               PASS-THROUGH
                              PRIOR                                                            CURRENT                RATES
                          PRINCIPAL                                                          PRINCIPAL
CLASS     CUSIP             BALANCE       INTEREST         PRINCIPAL             TOTAL         BALANCE       CURRENT         NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>     <C>            <C>              <C>              <C>               <C>            <C>             <C>           <C>
IA-1    055240CT0        885.364153       4.980173         39.967726         44.947899      845.396427      6.750000%     6.750000%
IA-2    055240CU7      1,000.000000       5.625000          0.000000          5.625000    1,000.000000      6.750000%     6.750000%
IA-3    055240CV5      1,000.000000       5.625000          0.000000          5.625000    1,000.000000      6.750000%     6.750000%
IA-4    055240CW3      1,000.000000       5.625000          0.000000          5.625000    1,000.000000      6.750000%     6.750000%
IA-5    055240CX1      1,000.000000       5.625001          0.000000          5.625001    1,000.000000      6.750000%     6.750000%
IA-6    055240CY9      1,000.000000       5.625001          0.000000          5.625001    1,000.000000      6.750000%     6.750000%
I-X *   055240DF9        898.841720       5.624999          0.000000          5.624999      866.202655      6.750000%     0.000000%
I-PO    055240DH5        994.616064       0.000000          0.907865          0.907865      993.708200      0.000000%     6.500000%
IIA-1   055240CZ6        936.021837       5.070118         40.895019         45.965138      895.126818      6.500000%     6.500000%
IIA-2   055240DA0        911.849190       4.939180         59.062970         64.002150      852.786220      6.500000%     6.500000%
IIA-3   055240DB8      1,000.000000       5.416667          0.000000          5.416667    1,000.000000      6.500000%     6.500000%
IIA-4   055240DC6        980.930275       5.313372          3.158847          8.472219      977.771428      6.500000%     6.500000%
IIA-5   055240DD4        953.570790       5.165175         61.732365         66.897540      891.838425      6.500000%     6.500000%
IIA-6   055240DE2          0.775618       0.000000          0.775618          0.775618        0.004203      6.500000%     6.500000%
II-X    055240DG7        904.010882       4.896726          0.000000          4.896726      845.202699      6.500000%     0.000000%
II-PO   055240DU6        979.052531       0.000000          3.741036          3.741036      975.311496      0.000000%     0.000000%
-----------------------------------------------------------------------------------------------------------------------------------
SELLER:                                    Bank of America                             ADMINISTRATOR:             Kelly L. Shea
SERVICER:                                  Bank of America                                                    Bankers Trust Company
LEAD UNDERWRITER:                   Donaldson, Lufkin & Jenrette                                                  3 Park Plaza
RECORD DATE:                              October 30, 1998                                                      Irvine, CA 92614
DISTRIBUTION DATE:                        November 25, 1998                            FACTOR INFORMATION:       (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                  Page 2 of 5                               (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                               CURRENT
                 ORIGINAL          PRINCIPAL                                                  REALIZED    DEFERRED       PRINCIPAL
CLASS          FACE VALUE            BALANCE       INTEREST      PRINCIPAL         TOTAL        LOSSES    INTEREST         BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>          <C>                <C>               <C>             <C>          <C>                <C>         <C>     <C>
 M           3,776,882.00       3,726,263.86      20,511.56       8,412.08     28,923.64          0.00        0.00    3,717,851.78
 B-1         2,231,794.00       2,201,883.29      12,120.47       4,970.78     17,091.25          0.00        0.00    2,196,912.51
 B-2         1,201,735.00       1,185,629.23       6,526.40       2,676.57      9,202.97          0.00        0.00    1,182,952.66
 B-3         1,030,060.00       1,016,255.03       5,594.07       2,294.21      7,888.28          0.00        0.00    1,013,960.82
 B-4           515,029.00         508,126.52       2,797.03       1,147.10      3,944.13          0.00        0.00      506,979.42
 B-5           686,706.32         677,503.03       3,729.38       1,529.47      5,258.85          0.00        0.00      675,973.56
 R-II               50.00               0.00           0.00           0.00          0.00          0.00        0.00            0.00


------------------------------------------------------------------------------------------------------------------------------------
TOTALS       9,442,256.32       9,315,660.96      51,278.91      21,030.21     72,309.12          0.00        0.00    9,294,630.75
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
----------------------------------------------------------------------------------------------------------------------------------
                           FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                           PASS-THROUGH
                                  PRIOR                                                    CURRENT                     RATES
                              PRINCIPAL                                                  PRINCIPAL
CLASS     CUSIP                 BALANCE      INTEREST      PRINCIPAL         TOTAL         BALANCE           CURRENT         NEXT
----------------------------------------------------------------------------------------------------------------------------------
<S>     <C>                  <C>             <C>            <C>           <C>           <C>                <C>            <C>
M       055240DJ1            986.597903      5.430818       2.227255      7.658074      984.370648         6.605508%      6.248096%
B-1     055240DK8            986.597907      5.430819       2.227258      7.658077      984.370650         6.605508%      6.248096%
B-2     055240DL6            986.597902      5.430815       2.227255      7.658069      984.370647         6.605508%      6.248096%
B-3     055240DM4            986.597897      5.430820       2.227259      7.658078      984.370639         6.605508%      6.248096%
B-4     055240DN2            986.597881      5.430820       2.227253      7.658074      984.370628         6.605508%      6.248096%
B-5     055240DP7            986.597922      5.430822       2.227248      7.658070      984.370667         6.605508%      6.248096%
R-II    055240DR3              0.000000      0.000000       0.000000      0.000000        0.000000         6.750000%      6.750000%


------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                   Bank of America                         ADMINISTRATOR:              Kelly L. Shea
SERVICER:                                 Bank of America                                                 Bankers Trust Company
LEAD UNDERWRITER:                  Donaldson, Lufkin & Jenrette                                               3 Park Plaza
RECORD DATE:                             October 30, 1998                                                   Irvine, CA 92614
DISTRIBUTION DATE:                       November 25, 1998                        FACTOR INFORMATION:        (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                 Page 3 of 5                                (C) COPYRIGHT 1998 Bankers Trust Company

</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
Distribution Date:                  November 25, 1998
------------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>                          <C>
MORTGAGE POOL INFORMATION:                                                                  GROUP I                       GROUP II
               BEGINNING BALANCE OF POOL                                                132,613,736.72               187,185,487.55
               LESS:                SCHEDULED PRINCIPAL                                    (107,180.28)                 (620,737.47)
                                    PRINCIPAL PREPAYMENTS                                (3,736,975.26)               (7,326,392.96)
                                    REPURCHASES                                                   0.00                         0.00
                                    LIQUIDATIONS                                                  0.00                         0.00
                                    OTHER UNSCHEDULED PRINCIPAL                                   0.00                         0.00
                                                                                        --------------               --------------
               ENDING BALANCE OF POOL                                                   128,769,581.18               179,238,357.12
                                                                                        ==============               ==============

               BEGINNING NUMBER OF LOANS IN POOL                                                   413                          544
               ENDING NUMBER OF LOANS IN POOL                                                      401                          525

               WEIGHTED AVERAGE REMAINING TERM TO MATURITY                                         344                          169
               WEIGHTED AVERAGE NET CONTRACT RATE                                             7.547176%                    7.124329%

               CURRENT REALIZED LOSSES ON THE POOL                                                0.00                         0.00
               CUMULATIVE REALIZED LOSSES ON THE POOL                                             0.00                         0.00

               BEGINNING POOL BALANCE OF PREMIUM LOANS                                  131,059,091.79               175,296,696.88
               STRIPPED INTEREST RATE                                                         0.554768%                    0.251858%

<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
DELINQUENT, BANKRUPTCY,                                                                             LOANS         LOANS        LOANS
FORECLOSURE, AND REO                               30 TO 59       60 TO 89        90 PLUS            IN            IN           IN
LOAN INFORMATION                                     DAYS           DAYS           DAYS          BANKRUPTCY    FORECLOSURE      REO
------------------------------------------------------------------------------------------------------------------------------------
<S>                                                <C>           <C>             <C>          <C>             <C>           <C>
GROUP I        PRINCIPAL BALANCE                      0.00          0.00            0.00         0.00            0.00          0.00
                    PERCENTAGE OF GROUP BAL.        0.0000%       0.0000%         0.0000%      0.0000%         0.0000%       0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                           0             0               0            0               0             0
                    PERCENTAGE OF LOANS             0.0000%       0.0000%         0.0000%      0.0000%         0.0000%       0.0000%
------------------------------------------------------------------------------------------------------------------------------------
GROUP II       PRINCIPAL BALANCE                246,964.27          0.00            0.00         0.00            0.00          0.00
                    PERCENTAGE OF GROUP BAL.        0.0802%       0.0000%         0.0000%      0.0000%         0.0000%       0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                           1             0               0            0               0             0
                    PERCENTAGE OF LOANS             0.1080%       0.0000%         0.0000%      0.0000%         0.0000%       0.0000%
------------------------------------------------------------------------------------------------------------------------------------

               GROUP I BOOK VALUE OF REO PROPERTIES                                                                NA
               GROUP II BOOK VALUE OF REO PROPERTIES                                                               NA

<CAPTION>
<S>                                                                                         <C>                          <C>
SERVICING INFORMATION:                                                                       GROUP I                      GROUP II
               SERVICING FEES ACCRUED DURING THE CURRENT DUE PERIOD                          27,627.86                    62,453.05
               PLUS:                ADDITIONAL SERVICING COMPENSATION                             0.00                         0.00
               LESS:                AMTS. TO COVER PREPAYMENT INT. SHORTFALL                (15,038.62)                  (21,021.03)
                                    DELINQUENT SERVICING FEES                                (1,524.36)                    1,132.31
                                                                                           -----------                   -----------
               SERVICING FEES COLLECTED FOR THE CURRENT DUE PERIOD                           11,064.88                    42,564.33
                                                                                           ===========                   ===========

               ADVANCED PRINCIPAL                                                             5,829.31                     9,898.48
               ADVANCED INTEREST                                                             44,251.04                    16,773.75

------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 4 of 5                      C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>


<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                                   STATEMENT TO CERTIFICATEHOLDERS

------------------------------------------------------------------------------------------------------------------------------------
Distribution Date:                  November 25, 1998
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                          OTHER                                        CUMULATIVE
                                   PREPAYMENT          UNSCHEDULED                   CERTIFICATE         UNPAID        CUMULATIVE
                                    PRINCIPAL           PRINCIPAL                     INTEREST          INTEREST        REALIZED
    CLASS                          DISTRIBUTED         DISTRIBUTED                    SHORTFALL         SHORTFALL        LOSSES
------------------------------------------------------------------------------------------------------------------------------------
<S>                              <C>                       <C>                            <C>           <C>                <C>
CLASS IA-1                       3,736,956.27              0.00                           0.00            0.00             0.00
CLASS IA-2                               0.00              0.00                           0.00            0.00             0.00
CLASS IA-3                               0.00              0.00                           0.00            0.00             0.00
CLASS IA-4                               0.00              0.00                           0.00            0.00             0.00
CLASS IA-5                               0.00              0.00                           0.00            0.00             0.00
CLASS IA-6                               0.00              0.00                           0.00            0.00             0.00
CLASS I-X                                0.00              0.00                           0.00            0.00             0.00
CLASS I-PO                              18.99              0.00                           0.00            0.00             0.00
CLASS IIA-1                      4,576,270.89              0.00                           0.00            0.00             0.00
CLASS IIA-2                         54,572.19              0.00                           0.00            0.00             0.00
CLASS IIA-3                              0.00              0.00                           0.00            0.00             0.00
CLASS IIA-4                         43,528.28              0.00                           0.00            0.00             0.00
CLASS IIA-5                      2,649,287.03              0.00                           0.00            0.00             0.00
CLASS IIA-6                          1,524.30              0.00                           0.00            0.00             0.00
CLASS II-X                               0.00              0.00                           0.00            0.00             0.00
CLASS II-PO                          1,210.27              0.00                           0.00            0.00             0.00
CLASS M                                  0.00              0.00                           0.00            0.00             0.00
CLASS B-1                                0.00              0.00                           0.00            0.00             0.00
CLASS B-2                                0.00              0.00                           0.00            0.00             0.00
CLASS B-3                                0.00              0.00                           0.00            0.00             0.00
CLASS B-4                                0.00              0.00                           0.00            0.00             0.00
CLASS B-5                                0.00              0.00                           0.00            0.00             0.00

  ----------------------------------------------------------------------------------------------------------------------------------
    TOTALS                      11,063,368.22              0.00                           0.00            0.00             0.00
------------------------------------------------------------------------------------------------------------------------------------


               OTHER REPORTING ITEMS:

               GROUP I PERCENTAGE                                                                                  97.03%
               GROUP I PREPAYMENT PERCENTAGE                                                                      100.00%
               GROUP II PERCENTAGE                                                                                 97.12%
               GROUP II PREPAYMENT PERCENTAGE                                                                     100.00%

               SUBORDINATE PRINCIPAL DISTRIBUTION AMOUNT                                                        21,030.21
               HAS THE CREDIT SUPPORT DEPLETION DATE OCCURRED                                                          No

               BANKRUPTCY AMOUNT                                                                               100,000.00
               FRAUD LOSS AMOUNT                                                                             6,395,984.49
               SPECIAL HAZARD AMOUNT                                                                         4,500,664.47
               EXTRAORDINARY LOSSES FOR THE PRIOR PERIOD                                                             0.00

               GROUP I EXTRAORDINARY LOSSES                                                                          0.00
               GROUP II EXTRAORDINARY LOSSES                                                                         0.00


------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 5 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>

                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                               REMIC I
                                               REVISED STATEMENT TO CERTIFICATEHOLDERS
                                            TO REFLECT REPORTING OF PREMIUM LOAN BALANCE
------------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                      PRIOR                                                                                 CURRENT
                 ORIGINAL         PRINCIPAL                                                 REALIZED     DEFERRED         PRINCIPAL
CLASS          FACE VALUE           BALANCE        INTEREST      PRINCIPAL           TOTAL    LOSSES     INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>               <C>                  <C>           <C>             <C>        <C>          <C>          <C>
P1-M            21,501.00         21,501.00            0.00          19.00           19.00      0.00         0.00         21,482.00
P2-M           350,133.00        350,133.00            0.00       1,314.98        1,314.98      0.00         0.00        348,818.02
X1-M *     142,084,361.67    142,084,361.67       67,408.36           0.00       67,408.36      0.00         0.00    141,713,575.08
X2-M *     187,559,494.52    187,559,494.52       40,698.17           0.00       40,698.17      0.00         0.00    186,909,427.22
Y1              71,698.81         71,698.81          403.31         324.04          727.35      0.00         0.00         71,374.78
Y2              99,676.65         99,676.65          539.92         693.52        1,233.44      0.00         0.00         98,983.13
Z1         143,556,266.44    143,556,266.44      807,504.00     372,145.33    1,179,649.33      0.00         0.00    143,184,121.10
Z2         199,253,620.42    199,253,620.42    1,079,290.44     692,824.36    1,772,114.80      0.00         0.00    198,560,796.06
R-I                 50.00             50.00            0.28          50.00           50.28      0.00         0.00              0.00

------------------------------------------------------------------------------------------------------------------------------------
TOTALS     343,352,946.32    343,352,946.32    1,995,844.48   1,067,371.23    3,063,215.71      0.00         0.00    342,285,575.09
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                            FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                            PASS-THROUGH
                                 PRIOR                                                           CURRENT                RATES
                             PRINCIPAL                                                         PRINCIPAL
CLASS        CUSIP             BALANCE         INTEREST       PRINCIPAL           TOTAL          BALANCE        CURRENT       NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>                       <C>                  <C>             <C>             <C>            <C>              <C>         <C>
 P1-M                     1,000.000000         0.000000        0.883680        0.883680       999.116320       0.000000%   0.000000%
 P2-M                     1,000.000000         0.000000        3.755659        3.755659       996.244341       0.000000%   0.000000%
 X1-M *                   1,000.000000         0.474425        0.000000        0.474425       997.390377       0.569310%   0.569310%
 X2-M *                   1,000.000000         0.216988        0.000000        0.216988       996.534074       0.260386%   0.260386%
 Y1                       1,000.000000         5.625058        4.519415       10.144474       995.480644       6.750000%   6.750000%
 Y2                       1,000.000000         5.416715        6.957677       12.374392       993.042317       6.500000%   6.500000%
 Z1                       1,000.000000         5.625000        2.592331        8.217331       997.407669       6.750000%   6.750000%
 Z2                       1,000.000000         5.416667        3.477098        8.893765       996.522902       6.500000%   6.500000%
 R-I        055240DQ5       100.000000         0.560000      100.000000      100.560000         0.000000       6.750000%   6.750000%
------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                         Bank of America                          ADMINISTRATOR:           Kelly L. Shea
SERVICER:                                       Bank of America                                               Bankers Trust Company
LEAD UNDERWRITER:                         Donaldson, Lufkin & Jenrette                                            3 Park Plaza
RECORD DATE:                                     April 30, 1998                                                 Irvine, CA 92614
DISTRIBUTION DATE:                                May 26, 1998                           FACTOR INFORMATION:     (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 1 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company

</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1
                                                              REMIC II
                                               REVISED STATEMENT TO CERTIFICATEHOLDERS
                                            TO REFLECT REPORTING OF PREMIUM LOAN BALANCE
------------------------------------------------------------------------------------------------------------------------------------
                                                 DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                                 CURRENT
                 ORIGINAL          PRINCIPAL                                                 REALIZED     DEFERRED         PRINCIPAL
    CLASS      FACE VALUE            BALANCE       INTEREST      PRINCIPAL           TOTAL     LOSSES     INTEREST           BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>                <C>               <C>            <C>             <C>              <C>          <C>      <C>
  IA-1      96,101,504.00      96,101,504.00     540,570.96     369,255.00      909,825.96       0.00         0.00     95,732,249.00
  IA-2       5,000,000.00       5,000,000.00      28,125.00           0.00       28,125.00       0.00         0.00      5,000,000.00
  IA-3       9,500,000.00       9,500,000.00      53,437.50           0.00       53,437.50       0.00         0.00      9,500,000.00
  IA-4      14,250,000.00      14,250,000.00      80,156.25           0.00       80,156.25       0.00         0.00     14,250,000.00
  IA-5       4,887,000.00       4,887,000.00      27,489.38           0.00       27,489.38       0.00         0.00      4,887,000.00
  IA-6       9,939,000.00       9,939,000.00      55,906.88           0.00       55,906.88       0.00         0.00      9,939,000.00
  I-X *     11,983,709.00      11,983,709.00      67,408.36           0.00       67,408.36       0.00         0.00     11,921,852.29
  I-PO          21,501.00          21,501.00           0.00          19.00           19.00       0.00         0.00         21,482.00
  IIA-1    121,111,453.00     121,111,453.00     656,020.37     422,161.09    1,078,181.46       0.00         0.00    120,689,291.91
  IIA-2      1,000,000.00       1,000,000.00       5,416.67       4,168.66        9,585.33       0.00         0.00        995,831.34
  IIA-3      8,262,000.00       8,262,000.00      44,752.50           0.00       44,752.50       0.00         0.00      8,262,000.00
  IIA-4     14,913,749.00      14,913,749.00      80,782.81      46,928.14      127,710.95       0.00         0.00     14,866,820.86
  IIA-5     46,447,250.00      46,447,250.00     251,589.27     214,010.86      465,600.13       0.00         0.00     46,233,239.14
  IIA-6      2,127,000.00       2,127,000.00           0.00           0.00            0.00       0.00    11,521.25      2,138,521.25
  II-X *     7,513,508.12       7,513,508.11      40,698.17           0.00       40,698.17       0.00         0.00      7,486,909.67
  II-PO        350,133.00         350,133.00           0.00       1,314.98        1,314.98       0.00         0.00        348,818.02

------------------------------------------------------------------------------------------------------------------------------------
TOTALS     333,910,590.00     333,910,590.00   1,932,354.12   1,057,857.73    2,990,211.85       0.00    11,521.25    332,864,253.52
------------------------------------------------------------------------------------------------------------------------------------
  *Notional Class Balance
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                            FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                            PASS-THROUGH
                                  PRIOR                                                           CURRENT               RATES
                              PRINCIPAL                                                         PRINCIPAL
CLASS        CUSIP              BALANCE         INTEREST       PRINCIPAL          TOTAL           BALANCE       CURRENT       NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>        <C>             <C>                  <C>             <C>            <C>            <C>             <C>          <C>
IA-1       055240CT0       1,000.000000         5.625000        3.842344       9.467344       996.157656      6.750000%    6.750000%
IA-2       055240CU7       1,000.000000         5.625000        0.000000       5.625000     1,000.000000      6.750000%    6.750000%
IA-3       055240CV5       1,000.000000         5.625000        0.000000       5.625000     1,000.000000      6.750000%    6.750000%
IA-4       055240CW3       1,000.000000         5.625000        0.000000       5.625000     1,000.000000      6.750000%    6.750000%
IA-5       055240CX1       1,000.000000         5.625001        0.000000       5.625001     1,000.000000      6.750000%    6.750000%
IA-6       055240CY9       1,000.000000         5.625001        0.000000       5.625001     1,000.000000      6.750000%    6.750000%
I-X *      055240DF9       1,000.000000         5.625000        0.000000       5.625000       994.838267      6.750000%    0.000000%
I-PO       055240DH5       1,000.000000         0.000000        0.883680       0.883680       999.116320      0.000000%    6.500000%
IIA-1      055240CZ6       1,000.000000         5.416667        3.485724       8.902391       996.514276      6.500000%    6.500000%
IIA-2      055240DA0       1,000.000000         5.416670        4.168660       9.585330       995.831340      6.500000%    6.500000%
IIA-3      055240DB8       1,000.000000         5.416667        0.000000       5.416667     1,000.000000      6.500000%    6.500000%
IIA-4      055240DC6       1,000.000000         5.416667        3.146636       8.563303       996.853364      6.500000%    6.500000%
IIA-5      055240DD4       1,000.000000         5.416667        4.607611      10.024278       995.392389      6.500000%    6.500000%
IIA-6      055240DE2       1,000.000000         0.000000        0.000000       0.000000     1,005.416667      6.500000%    6.500000%
II-X       055240DG7       1,000.000000         5.416667        0.000000       5.416667       996.459915      6.500000%    0.000000%
II-PO      055240DU6       1,000.000000         0.000000        3.755659       3.755659       996.244341      0.000000%    0.000000%

------------------------------------------------------------------------------------------------------------------------------------
SELLER:                                      Bank of America                             ADMINISTRATOR:           Kelly L. Shea
SERVICER:                                    Bank of America                                                   Bankers Trust Company
LEAD UNDERWRITER:                      Donaldson, Lufkin & Jenrette                                                3 Park Plaza
RECORD DATE:                                  April 30, 1998                                                     Irvine, CA 92614
DISTRIBUTION DATE:                             May 26, 1998                              FACTOR INFORMATION:      (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 2 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                               REVISED STATEMENT TO CERTIFICATEHOLDERS
                                            TO REFLECT REPORTING OF PREMIUM LOAN BALANCE
------------------------------------------------------------------------------------------------------------------------------------
                                                  DISTRIBUTIONS IN DOLLARS
                                       PRIOR                                                                                 CURRENT
                 ORIGINAL          PRINCIPAL                                                  REALIZED     DEFERRED        PRINCIPAL
  CLASS        FACE VALUE            BALANCE       INTEREST      PRINCIPAL          TOTAL       LOSSES     INTEREST          BALANCE
------------------------------------------------------------------------------------------------------------------------------------
<S>          <C>                <C>               <C>             <C>           <C>               <C>          <C>      <C>
   M         3,776,882.00       3,776,882.00      20,787.31       8,353.90      29,141.21         0.00         0.00     3,768,528.10
   B-1       2,231,794.00       2,231,794.00      12,283.41       4,936.39      17,219.80         0.00         0.00     2,226,857.61
   B-2       1,201,735.00       1,201,735.00       6,614.14       2,658.06       9,272.20         0.00         0.00     1,199,076.94
   B-3       1,030,060.00       1,030,060.00       5,669.27       2,278.34       7,947.61         0.00         0.00     1,027,781.66
   B-4         515,029.00         515,029.00       2,834.63       1,139.17       3,973.80         0.00         0.00       513,889.83
   B-5         686,706.32         686,706.32       3,779.51       1,518.89       5,298.40         0.00         0.00       685,187.43
   R-II             50.00              50.00           0.28          50.00          50.28         0.00         0.00             0.00


------------------------------------------------------------------------------------------------------------------------------------
TOTALS       9,442,256.32       9,442,256.32      51,968.55      20,934.75      72,903.30         0.00         0.00     9,421,321.57
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
------------------------------------------------------------------------------------------------------------------------------------
                            FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                                            PASS-THROUGH
                                  PRIOR                                                         CURRENT                 RATES
                              PRINCIPAL                                                       PRINCIPAL
CLASS       CUSIP               BALANCE        INTEREST      PRINCIPAL           TOTAL          BALANCE         CURRENT       NEXT
------------------------------------------------------------------------------------------------------------------------------------
<S>       <C>              <C>                 <C>            <C>             <C>            <C>              <C>          <C>
  M       055240DJ1        1,000.000000        5.503828       2.211851        7.715679       997.788149       6.604594%    6.184739%
  B-1     055240DK8        1,000.000000        5.503828       2.211848        7.715676       997.788152       6.604594%    6.184739%
  B-2     055240DL6        1,000.000000        5.503826       2.211852        7.715678       997.788148       6.604594%    6.184739%
  B-3     055240DM4        1,000.000000        5.503825       2.211852        7.715677       997.788148       6.604594%    6.184739%
  B-4     055240DN2        1,000.000000        5.503826       2.211856        7.715682       997.788144       6.604594%    6.184739%
  B-5     055240DP7        1,000.000000        5.503823       2.211848        7.715671       997.788152       6.604594%    6.184739%
  R-II    055240DR3          100.000000        0.560000     100.000000      100.560000         0.000000       6.750000%    6.750000%

----------------------------------------------------------------------------------------------------------------------------------
SELLER:                                    Bank of America                              ADMINISTRATOR:           Kelly L. Shea
SERVICER:                                  Bank of America                                                   Bankers Trust Company
LEAD UNDERWRITER:                    Donaldson, Lufkin & Jenrette                                                3 Park Plaza
RECORD DATE:                                April 30, 1998                                                     Irvine, CA 92614
DISTRIBUTION DATE:                           May 26, 1998                               FACTOR INFORMATION:     (800) 735-7777
------------------------------------------------------------------------------------------------------------------------------------
                                                            Page 3 of 5                 (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                               REVISED STATEMENT TO CERTIFICATEHOLDERS
                                            TO REFLECT REPORTING OF PREMIUM LOAN BALANCE
------------------------------------------------------------------------------------------------------------------------------------

Distribution Date:                May 26, 1998
------------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                     <C>                         <C>
MORTGAGE POOL INFORMATION:                                                               GROUP I                         GROUP II
               BEGINNING BALANCE OF POOL                                                143,649,466.35              199,703,430.28
               LESS:              SCHEDULED PRINCIPAL                                      (113,251.19)                (646,226.06)
                                  PRINCIPAL PREPAYMENTS                                    (259,237.18)                 (48,606.80)
                                  REPURCHASES                                                     0.00                        0.00
                                  LIQUIDATIONS                                                    0.00                        0.00
                                  OTHER UNSCHEDULED PRINCIPAL                                     0.00                        0.00
                                                                                        --------------             ----------------
               ENDING BALANCE OF POOL                                                   143,276,977.98              199,008,597.42
                                                                                        ==============             ================

               BEGINNING NUMBER OF LOANS IN POOL                                                   445                         567
               ENDING NUMBER OF LOANS IN POOL                                                      444                         567

               WEIGHTED AVERAGE REMAINING TERM TO MATURITY                                         350                         176
               WEIGHTED AVERAGE NET CONTRACT RATE                                             7.562097%                   7.135717%

               CURRENT REALIZED LOSSES ON THE POOL                                                0.00                        0.00
               CUMULATIVE REALIZED LOSSES ON THE POOL                                             0.00                        0.00

               BEGINNING POOL BALANCE OF PREMIUM LOANS                                  142,084,361.67              187,559,494.52
               STRIPPED INTEREST RATE                                                         0.569310%                   0.260386%

<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
DELINQUENT, BANKRUPTCY,                                                                        LOANS          LOANS          LOANS
FORECLOSURE, AND REO                             30 TO 59        60 TO 89       90 PLUS         IN              IN             IN
LOAN INFORMATION                                   DAYS            DAYS          DAYS       BANKRUPTCY     FORECLOSURE        REO
------------------------------------------------------------------------------------------------------------------------------------
GROUP I        PRINCIPAL BALANCE                    0.00           0.00           0.00           0.00             0.00         0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%        0.0000%        0.0000%        0.0000%          0.0000%      0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0              0              0              0                0            0
                    PERCENTAGE OF LOANS           0.0000%        0.0000%        0.0000%        0.0000%          0.0000%      0.0000%
------------------------------------------------------------------------------------------------------------------------------------
GROUP II       PRINCIPAL BALANCE                    0.00           0.00           0.00           0.00             0.00         0.00
                    PERCENTAGE OF GROUP BAL.      0.0000%        0.0000%        0.0000%        0.0000%          0.0000%      0.0000%
               ---------------------------------------------------------------------------------------------------------------------
               NUMBER OF LOANS                         0              0              0              0                0            0
                    PERCENTAGE OF LOANS           0.0000%        0.0000%        0.0000%        0.0000%          0.0000%      0.0000%
------------------------------------------------------------------------------------------------------------------------------------

               GROUP I BOOK VALUE OF REO PROPERTIES                                                                 NA
               GROUP II BOOK VALUE OF REO PROPERTIES                                                                NA
<S>                                                                                          <C>                          <C>
SERVICING INFORMATION:                                                                        GROUP I                     GROUP II
               SERVICING FEES ACCRUED DURING THE CURRENT DUE PERIOD                          29,926.97                    66,994.17
               PLUS:              ADDITIONAL SERVICING COMPENSATION                               0.00                         0.00
               LESS:              AMTS. TO COVER PREPAYMENT INT. SHORTFALL                     (178.56)                        0.00
                                  DELINQUENT SERVICING FEES                                       0.00                         0.00
                                                                                           ------------                 -----------
               SERVICING FEES COLLECTED FOR THE CURRENT DUE PERIOD                           29,748.41                    66,994.17
                                                                                           ============                 ===========

               ADVANCED PRINCIPAL                                                                 0.00                         0.00
               ADVANCED INTEREST                                                                  0.00                         0.00

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                                                            Page 4 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>

<TABLE>
                                                    BA MORTGAGE SECURITIES, INC.
                                                 MORTGAGE PASS-THROUGH CERTIFICATES
                                                            SERIES 1998-1

                                               REVISED STATEMENT TO CERTIFICATEHOLDERS
                                            TO REFLECT REPORTING OF PREMIUM LOAN BALANCE
------------------------------------------------------------------------------------------------------------------------------------

Distribution Date:                May 26, 1998
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                           OTHER                                           CUMULATIVE
                                   PREPAYMENT           UNSCHEDULED                   CERTIFICATE            UNPAID        UMULATIVE
                                    PRINCIPAL            PRINCIPAL                     INTEREST             INTEREST       REALIZED
CLASS                              DISTRIBUTED          DISTRIBUTED                    SHORTFALL            SHORTFALL        LOSSES
------------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>                       <C>                         <C>                  <C>             <C>
   CLASS IA-1                       259,223.84                0.00                        0.00                 0.00            0.00
   CLASS IA-2                             0.00                0.00                        0.00                 0.00            0.00
   CLASS IA-3                             0.00                0.00                        0.00                 0.00            0.00
   CLASS IA-4                             0.00                0.00                        0.00                 0.00            0.00
   CLASS IA-5                             0.00                0.00                        0.00                 0.00            0.00
   CLASS IA-6                             0.00                0.00                        0.00                 0.00            0.00
   CLASS I-X                              0.00                0.00                        0.00                 0.00            0.00
   CLASS I-PO                            13.34                0.00                        0.00                 0.00            0.00
   CLASS IIA-1                       29,800.15                0.00                        0.00                 0.00            0.00
   CLASS IIA-2                          294.26                0.00                        0.00                 0.00            0.00
   CLASS IIA-3                            0.00                0.00                        0.00                 0.00            0.00
   CLASS IIA-4                        3,312.64                0.00                        0.00                 0.00            0.00
   CLASS IIA-5                       15,106.93                0.00                        0.00                 0.00            0.00
   CLASS IIA-6                            0.00                0.00                        0.00                 0.00            0.00
   CLASS II-X                             0.00                0.00                        0.00                 0.00            0.00
   CLASS II-PO                           92.82                0.00                        0.00                 0.00            0.00
   CLASS M                                0.00                0.00                        0.00                 0.00            0.00
   CLASS B-1                              0.00                0.00                        0.00                 0.00            0.00
   CLASS B-2                              0.00                0.00                        0.00                 0.00            0.00
   CLASS B-3                              0.00                0.00                        0.00                 0.00            0.00
   CLASS B-4                              0.00                0.00                        0.00                 0.00            0.00
   CLASS B-5                              0.00                0.00                        0.00                 0.00            0.00

------------------------------------------------------------------------------------------------------------------------------------
TOTALS                              307,843.98                0.00                        0.00                 0.00            0.00
------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
<S>                                                                                                                      <C>
               OTHER REPORTING ITEMS:

               GROUP I PERCENTAGE                                                                                        97.25%
               GROUP I PREPAYMENT PERCENTAGE                                                                            100.00%
               GROUP II PERCENTAGE                                                                                       97.25%
               GROUP II PREPAYMENT PERCENTAGE                                                                           100.00%

               SUBORDINATE PRINCIPAL DISTRIBUTION AMOUNT                                                              20,884.75
               HAS THE CREDIT SUPPORT DEPLETION DATE OCCURRED                                                                No

               BANKRUPTCY AMOUNT                                                                                     100,000.00
               FRAUD LOSS AMOUNT                                                                                   6,867,057.93
               SPECIAL HAZARD AMOUNT                                                                               4,500,664.47
               EXTRAORDINARY LOSSES FOR THE PRIOR PERIOD                                                                   0.00

               GROUP I EXTRAORDINARY LOSSES                                                                                0.00
               GROUP II EXTRAORDINARY LOSSES                                                                               0.00


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                                                            Page 5 of 5                     (C) COPYRIGHT 1998 Bankers Trust Company
</TABLE>