<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                        

                                   FORM 10-Q
                                        
                                   (Mark One)
[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
    EXCHANGE ACT OF 1934

               For the Quarterly Period Ended September 30, 1998
                                       or
[_] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
    EXCHANGE ACT OF 1934

                         COMMISSION FILE NUMBER 1-12365

             EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER:
                           BA Merchant Services, Inc.

         STATE OR OTHER JURISDICTION OF INCORPORATION OR ORGANIZATION:
                                    Delaware

                     I.R.S. EMPLOYER IDENTIFICATION NUMBER:
                                   94-3252840

                    ADDRESS OF PRINCIPAL EXECUTIVE OFFICES:
                           One South Van Ness Avenue
                        San Francisco, California 94103

              REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:
                                  415-241-3390

              FORMER NAME, FORMER ADDRESS AND FORMER FISCAL YEAR,
                         IF CHANGED SINCE LAST REPORT:
                                      None

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

                         Yes     X          No  
                               -----           ----- 

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

<TABLE> 
<S>                                                  <C> 
  Class A Common Stock, $0.01 par value      --      16,267,042 outstanding on 
                                                     September 30, 1998

  Class B Common Stock, $0.01 par value      --      32,400,000 outstanding on 
                                                     September 30, 1998
</TABLE> 
-------------------------------------------------------------------------------

This document serves both as an analytical review for analysts, shareholders,
and other interested persons, and as the quarterly report on Form 10-Q of BA
Merchant Services, Inc. to the Securities and Exchange Commission, which has
taken no action to approve or disapprove the report or to pass upon its accuracy
or adequacy. Additionally, this document is to be read in conjunction with BA
Merchant Services, Inc.'s Annual Report on Form 10-K  for the year ended
December 31, 1997, including the consolidated financial statements and notes
thereto. 
<PAGE>
 
                                     INDEX

                           BA MERCHANT SERVICES, INC.

<TABLE>
<CAPTION>
                                                                                                                     Page
                                                                                                                     ----
<S>                  <C>                                                                                             <C> 
                                            PART I FINANCIAL INFORMATION

Item 1.              Financial Statements:
                      Balance Sheet...............................................................................   1
                      Statement of Operations.....................................................................   2
                      Statement of Cash Flows.....................................................................   3
                      Statement of Changes in Stockholders' Equity................................................   4
                      Notes to Financial Statements...............................................................   5
Item 2.              Management's Discussion and Analysis of Financial Condition and Results of Operations:
                      Highlights..................................................................................   9
                      Results of Operations.......................................................................  11
                      Balance Sheet Review........................................................................  12
                      Liquidity and Capital Resources.............................................................  12
                      Year 2000...................................................................................  13
                      Forward-Looking Statements..................................................................  13

                                              PART II OTHER INFORMATION

Item 6.              Exhibits and Reports on Form-8-K.............................................................  14
                     Signatures...................................................................................  15
                     Exhibit Index................................................................................  16
                     

</TABLE>
<PAGE>
 
                                     PART I
                             FINANCIAL INFORMATION
                                        
                           BA MERCHANT SERVICES, INC.

                                 BALANCE SHEET
                                   UNAUDITED
                         (DOLLAR AMOUNTS IN THOUSANDS)


Item 1.      Financial Statements
<TABLE>
<CAPTION>
                                                                                            SEPTEMBER 30,    DECEMBER 31,
                                                                                                1998            1997
                                                                                            ------------     -----------
<S>                                                                                           <C>            <C>
ASSETS
Current assets:
  Cash and cash equivalents...............................................................     $ 54,409       $ 29,426
  Short-term investments..................................................................       35,564         64,018
  Drafts in transit.......................................................................      108,015        106,463
  Accounts receivable.....................................................................       64,051         63,461
  Other current assets....................................................................        5,253         11,533
                                                                                               --------       --------
     Total current assets.................................................................      267,292        274,901
Property and equipment, net...............................................................       30,145         27,762
Investment in joint venture...............................................................       27,212             --
Goodwill, net.............................................................................        8,162             --
Other assets..............................................................................       21,482         25,422
                                                                                               --------       --------
  Total assets............................................................................     $354,293       $328,085
                                                                                               ========       ========

Liabilities and Stockholders' Equity
Current liabilities:
  Accounts payable........................................................................      $    89       $     32
  Merchants payable.......................................................................        6,470          8,058
  Accrued liabilities.....................................................................        7,963          6,050
  Accrued credit card association and interchange fees....................................        8,672          9,192
  Income taxes payable....................................................................        4,033          3,459
  Other current liabilities...............................................................        5,620          9,225
                                                                                               --------       --------
     Total current liabilities............................................................       32,847         36,016
Other liabilities.........................................................................          885            816
                                                                                               --------       --------
  Total liabilities.......................................................................       33,732         36,832
                                                                                               ========       ========
Stockholders' equity:
Class A Common Stock, par value $0.01; authorized 200,000,000 shares; issued and
  Outstanding 16,267,042 shares at June 30, 1998 and 16,253,126 at
  December 31, 1997.......................................................................          162            162
Class B Common Stock, par value $0.01; authorized 50,000,000 shares; issued and
  Outstanding 32,400,000 shares...........................................................          324            324
Additional paid-in capital................................................................      252,861        252,479
Retained earnings.........................................................................       67,372         38,280
Accumulated foreign currency translation adjustments, net of income taxes.................         (158)             8
                                                                                               --------       --------
  Total stockholders' equity..............................................................      320,561        291,253
                                                                                               --------       --------
  Total liabilities and  stockholders' equity.............................................     $354,293       $328,085
                                                                                               ========       ========
</TABLE>
                                                                                
                       See Notes to Financial Statements.

                                       1
<PAGE>
 
                           BA MERCHANT SERVICES, INC.

                            STATEMENT OF OPERATIONS
                                  (UNAUDITED)
            (DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)


<TABLE>
<CAPTION>
                                                                                 THREE MONTHS ENDED             NINE MONTHS ENDED
                                                                                   SEPTEMBER 30,                  SEPTEMBER 30,
                                                                              ----------------------        ----------------------
                                                                                1998         1997              1998         1997
                                                                              ---------   ----------        ---------   ----------

<S>                                                                           <C>         <C>                <C>         <C>
Net revenue...................................................................  $48,716      $41,192          $135,789     $116,043
                                                                                -------      -------          --------     --------
Operating expense:
  Salaries and employee benefits..............................................   10,082        8,703            29,997       25,209
  Data processing and communications..........................................   10,919        8,332            29,797       24,315
  General and administrative..................................................    5,719        6,105            19,286       18,321
  Depreciation................................................................    4,171        2,869            11,362        7,882
  Amortization of intangibles.................................................      567          106             1,455          327
                                                                                -------      -------          --------     --------
     Total operating expense..................................................   31,458       26,115            91,897       76,054
                                                                                -------      -------          --------     --------
Income from operations........................................................   17,258       15,077            43,892       39,989
Net interest income...........................................................    1,669        2,059             5,416        5,811
                                                                                -------      -------          --------     --------
     Income before income taxes...............................................   18,927       17,136            49,308       45,800
Provision for income taxes....................................................    7,760        7,082            20,216       18,930
                                                                                -------      -------          --------     --------
     Net income...............................................................  $11,167      $10,054          $ 29,092     $ 26,870
                                                                                =======      =======          ========     ========

Earnings per common share.....................................................    $0.23        $0.21             $0.60        $0.55
Diluted earnings per common share.............................................    $0.23        $0.21             $0.60        $0.55
</TABLE>


                       See Notes to Financial Statements.

                                       2
<PAGE>
 
                           BA MERCHANT SERVICES, INC.

                            STATEMENT OF CASH FLOWS
                                  (Unaudited)
                         (DOLLAR AMOUNTS IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                             Nine Months Ended
                                                                                               September, 30
                                                                                     ---------------------------------
                                                                                           1998              1997
                                                                                     ----------------   --------------
<S>                                                                                  <C>                <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income..........................................................................        $ 29,092         $ 26,870
Adjustments to net income to arrive at cash provided by operating activities:
  Depreciation......................................................................          11,262            7,882
  Amortization of intangibles.......................................................           1,455              327
  Benefit from deferred income taxes................................................          (1,451)          (1,051)
  Amortization of restricted stock..................................................             323              479
  Amortization of loan fees.........................................................              --              254
  Changes in operating assets and liabilities:
     Decrease (increase) in drafts in transit.......................................          (1,552)          23,755
     Decrease in accounts receivable................................................            (590)         (16,702)
     Decrease (increase) in other current assets....................................           6,280           (7,477)
     Increase in accounts payable...................................................              57            2,189
     Increase in current income taxes payable.......................................             574              821
     Increase in merchants payable..................................................          (1,588)          (8,285)
     Increase in accrued liabilities................................................           1,913            1,278
     (Decrease) increase in accrued credit card association and
       interchange fees.............................................................            (520)           3,632
     Other, net.....................................................................              26            4,769
                                                                                            --------         --------
        Net cash provided by operating activities...................................          45,281           38,741
                                                                                            --------         --------

CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment..................................................         (13,645)         (12,870)
Purchase of short-term investments..................................................         (11,674)         (71,214)
Maturities of short-term investments................................................          40,128               --
Acquisition of portfolio of merchant processing  contracts..........................              --          (11,000)
Investment in  joint venture........................................................         (35,000)              --
                                                                                            --------         --------
        Net cash provided by (used for) investing activities........................         (20,191)         (95,084)
                                                                                            --------         --------

CASH FLOWS FROM FINANCING ACTIVITIES:
Increase in underwriting expense....................................................              --             (165)
Issuance of  common stock...........................................................              59               --
BAC's change in funding.............................................................              --          (26,483)
                                                                                            --------         --------
        Net cash used for financing activities......................................              59          (26,648)
                                                                                            --------         --------

EXCHANGE RATE EFFECT ON CASH AND CASH EQUIVALENTS...................................            (166)            (236)
                                                                                            --------         --------

Increase in cash and cash equivalents...............................................          24,983          (83,227)
Cash and cash equivalents at beginning of period....................................          29,426          138,413
                                                                                            --------         --------
Cash and cash equivalents at end of period..........................................        $ 54,409         $ 55,186
                                                                                            ========         ========
</TABLE>


                       See Notes to Financial Statements.

                                       3
<PAGE>
 
                           BA MERCHANT SERVICES, INC.

                  STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY
                                  (UNAUDITED)



<TABLE>
<CAPTION>
                                                                                            NINE MONTHS
                                                                                        ENDED SEPTEMBER 30,
                                                                                    ---------------------------
                                                                                        1998           1997
                                                                                    ------------   ------------
<S>                                                                                 <C>            <C>
(dollar amounts in thousands)
CLASS A COMMON STOCK:
Balance at beginning of period..................................................    $    162       $    162
Issuance of additional stock....................................................          --             --
                                                                                    --------       --------
    Balance at end of period....................................................         162            162

CLASS B COMMON STOCK:
Balance at beginning of period..................................................         324            302
Issuance of additional common stock.............................................          --             22
                                                                                    --------       --------
    Balance at end of period....................................................         324            324

ADDITIONAL PAID-IN CAPITAL:
Balance at beginning of period..................................................     252,479        249,622
Amortization of unvested portion of restricted stock............................         323            479
Additional underwriting expenses................................................          --           (165)
Issuance of additional common stock.............................................          59          2,462
                                                                                    --------       --------
    Balance at end of period....................................................     252,861        252,398

CUMULATIVE FOREIGN CURRENCY TRANSLATION ADJUSTMENT:
Balance at beginning of period..................................................           8             --
Translation adjustments.........................................................        (166)          (236)
                                                                                    --------       --------
    Balance at end of period....................................................        (158)          (236)

RETAINED EARNINGS:
Balance at beginning of period..................................................      38,280          2,039
Net income......................................................................      29,092         25,786
                                                                                    --------       --------
    Balance at end of period....................................................      67,372         27,825

BAC'S EQUITY INTEREST:
Balance at beginning of period..................................................          --         27,883
Net income......................................................................          --          1,084
Transfer of net assets from BAC in exchange for
    Class B common stock........................................................          --         (2,484)
BAC's change in funding.........................................................          --        (26,483)
                                                                                    --------       --------
    Balance at end of period....................................................          --             --
                                                                                    --------       --------

      Total stockholders' equity end of period..................................    $320,561       $280,473
                                                                                    ========       ========
</TABLE>

                      See Notes to Financial Statements.

                                       4
<PAGE>
 
                           BA MERCHANT SERVICES, INC.

                         NOTES TO FINANCIAL STATEMENTS

Note 1--Description of Business, Organization and Basis of Presentation

  Description of Business - BA Merchant Services, Inc. ("BAMS" or the "Company")
provides an array of payment processing and related information products and
services to merchants throughout the United States and certain Asian countries
who accept credit, charge and debit cards as payment for goods and services.
BAMS is one of the largest processors of merchant debit and credit card
transactions in the United States.

  Organization and Domestic Operations - BAMS was incorporated on October 11,
1996 and commenced operations December 4, 1996, upon the transfer by Bank of
America National Trust & Savings Association (the "Bank") and Bank of America
NW, National Association ("BANW", formerly Seattle-First National Bank) of their
respective United States merchant processing businesses to BAMS in consideration
for 30.2 million shares of Class B Common Stock.  Effective January 1, 1997,
BANW was merged into the Bank.  The Bank is a wholly owned subsidiary of
BankAmerica Corporation ("BAC").  References to "BAC" in these financial
statements and notes thereto shall be deemed to be references to BankAmerica
Corporation and its subsidiaries and affiliates, including the Bank and, prior
to January 1, 1997, BANW.

  During December 1996, BAMS issued 16.1 million shares of Class A Common Stock
in underwritten initial public offerings which generated net cash proceeds of
$232.9 million.

  Asian Operations - On June 2, 1997, BAMS acquired BAC's merchant processing
business in Thailand  (net assets of approximately $91,000) in consideration for
150,000 shares of Class B Common Stock.  On July 1, 1997, BAMS acquired BAC's
merchant processing business in the Philippines (net assets of approximately
$153,000) in consideration for 550,000 shares of Class B Common Stock.  On
September 30, 1997, BAMS acquired BAC's merchant processing business in Taiwan
and merchant processing administrative office in Hong Kong (net assets of
approximately $2.2 million) in consideration for 1,500,000 shares of Class B
Common Stock.  The acquisition of these entities will be collectively referred
to as the "Asia Acquisitions".  With the issuance by BAMS of additional shares
of Class B Common Stock to BAC in connection with the Asia Acquisitions, BAC's
financial interest in BAMS increased from 65.0% to 66.6%.  On October 31, 1998,
the Company closed its merchant processing operations in Thailand.  For the
first nine months of 1998, the Company's operations in Thailand lost
approximately $0.3 million after tax.

  NationsBank Corporation Merger - On April 13, 1998, BAC and NationsBank
Corporation ("NBC") announced a definitive agreement to merge in a stock-for-
stock transaction.  The merger closed on September 30, 1998.  For further
disclosure, see Management's Discussion and Analysis of Financial Condition and
Results of Operations - "Highlights" on page 9.

   Basis of Presentation - The unaudited financial statements of BAMS are
prepared in conformity with generally accepted accounting principles for interim
financial information, the instructions to Form 10-Q and Rule 10-01 of
Regulation S-X. In the opinion of management, all adjustments necessary for a
fair presentation of the financial position and results of operations for the
periods presented have been included. All such adjustments are of a normal
recurring nature. These unaudited financial statements should be read in
conjunction with the audited consolidated financial statements included in BAMS'
Annual Report on Form 10-K for the year ended December 31, 1997.  Results for
the interim periods should not be considered indicative of results to be
expected for the full year.

  BAC's transfer to BAMS of certain assets and liabilities of its United States
and certain Asian merchant processing businesses (net assets) was accounted
for as a reorganization of entities under common control and, accordingly,  the
transfer of these net assets was accounted for at historical cost in a manner
similar to a pooling of interests.   Included in the transfer of net assets was
Seafirst Merchant Services, Inc. ("SMSI"), a wholly owned subsidiary of BANW.
SMSI was subsequently dissolved on December 29, 1997. The accompanying financial
statements have been prepared as if the Company had operated as a separate
entity for all periods presented.   The financial statements include the
combined

                                       5
<PAGE>
 
                           BA MERCHANT SERVICES, INC.

                   NOTES TO FINANCIAL STATEMENTS--(CONTINUED)
                                        

historical results of operations, assets and liabilities of BAC's merchant
processing businesses in Thailand, the Philippines, Taiwan and the merchant
processing administrative office in Hong Kong for all periods prior to the Asia
Acquisitions.

   Prior to the respective dates of the Asia Acquisitions, changes in BAC's
equity interest represented net income of the Company adjusted for net cash
transfers to and from BAC.  Additionally, prior to these dates, the financial
statements include allocations of certain assets (primarily property and
equipment) and expenses relating to the merchant processing businesses
transferred from BAC.  Management believes these allocations are reasonable.
 
   Certain of the pre-Asia Acquisition  expenses in the  financial statements
are not necessarily indicative of the costs that would have been incurred if the
Company had performed these functions as a stand-alone entity.  Therefore, prior
to the respective dates of the Asia Acquisitions, the financial statements may
not necessarily reflect the Company's results of operations, changes in equity
and cash flows as they would have been had the Company owned and operated the
Asian operations.  Subsequent to these dates, the Company performed these
functions using its own resources and purchased services (from BAC and other
companies) and was responsible for the cost and expenses associated with the
management of the Asian operations.


NOTE 2--INCOME TAXES

  The following is a summary of the components of income tax expense:

<TABLE>
<CAPTION>
                                                                          THREE MONTHS                    NINE MONTHS
                                                                            ENDED                           ENDED
                                                                         SEPTEMBER 30,                   SEPTEMBER 30,
                                                                 ---------------------------     --------------------------
                                                                      1998            1997            1998           1997
                                                                 ------------     ----------     -----------    -----------
<S>                                                                 <C>              <C>            <C>            <C>
Provision for income taxes:
        Federal..............................................          $5,870         $5,208         $15,182        $13,931
        State................................................           1,718          1,597           4,443          4,269
        Foreign..............................................             172            277             591            730
                                                                       ------         ------         -------        -------
             Total...........................................          $7,760         $7,082         $20,216        $18,930
                                                                       ======         ======         =======        =======
</TABLE>

  The Company's estimated annual effective income tax rate for the 1998 and 1997
interim periods was 41.0% and 41.3%, respectively. These rates are higher than
the federal statutory tax rate of 35% due principally to state income taxes.


NOTE 3--EARNINGS PER COMMON SHARE

  Effective December 15, 1997, the Company adopted Statement of Financial
Accounting Standards No. 128, "Earnings per Share" (SFAS No. 128).  Under the
new requirements, the Company's computation of earnings per common and common
equivalent share is replaced by earnings per common share, which excludes any
dilutive effect of stock options and warrants outstanding during the period.
Earnings per common share is computed by dividing net income applicable to
common stock by the average number of common shares outstanding during the
period.

  Also, under SFAS No. 128, the Company's computation of earnings per common and
common equivalent share, assuming full dilution, is replaced with diluted
earnings per common share.  Diluted earnings per common share is computed by
dividing net income applicable to common stock by the average number of common
shares outstanding

                                       6
<PAGE>
 
                           BA MERCHANT SERVICES, INC.
                                        
                   NOTES TO FINANCIAL STATEMENTS--(Continued)


during the period including the dilutive effect of stock options and warrants
outstanding during the period.  The dilutive effect of stock options and
warrants outstanding during the period is computed using the average market
price of the Company's common stock for the period.

  Earnings per share for the three and nine month periods ended September 30,
1997 has been computed by dividing net income by the weighted average number of
common shares outstanding assuming the stock issued in the Asia Acquisitions had
been outstanding since January 1, 1994.  The earnings per common share amount
for each period presented below is the same as the diluted earnings per common
share amount presented for the respective period.

<TABLE>
<CAPTION>
                                                                            THREE MONTHS ENDED               NINE MONTHS ENDED
                                                                              SEPTEMBER 30,                    SEPTEMBER 30,
                                                                     -----------------------------     ---------------------------
                                                                          1998             1997             1998            1997
                                                                     ------------     ------------     -----------     -----------
(amounts in thousands, except earnings per share data)        
<S>                                                                     <C>              <C>              <C>             <C>
    Net income....................................................        $11,167          $10,054         $29,092         $26,870
    Average number of  common shares outstanding and common   
      stock equivalents............................................        48,751           48,787          48,783          48,730
    Diluted earnings per common share..............................       $  0.23          $  0.21         $  0.60         $  0.55
</TABLE>

Note 4--Related Parties

  The Company and BAC engage in various intercompany transactions and
arrangements including the provision by BAC of various services to the Company.
Such services are currently provided pursuant to various intercompany agreements
which, among other things, grant to the Company a license to use the Bank of
America name and certain trademarks and service marks in connection with the
Company's business.

  Additional services provided under the intercompany agreements include product
distribution, processing, system support, telecommunications, marketing,
regulatory compliance, legal, tax and treasury, accounting and audit and other
miscellaneous support and administrative services.

    The Company believes that the cost of services provided under the
intercompany arrangements have not been materially different from the costs that
would have been incurred if the Company was unaffiliated with BAC.


NOTE 5--COMPREHENSIVE INCOME

  As of January 1, 1998, the Company adopted Statement of Financial Accounting
Standards No. 130, "Reporting Comprehensive Income" (SFAS No. 130), which
requires companies to report and display comprehensive income and its
components.  The adoption of SFAS No. 130 did not have an impact on the
Company's financial position or results of operations as reported herein.

                                       7
<PAGE>
 
                           BA MERCHANT SERVICES, INC.
                                        
                   NOTES TO FINANCIAL STATEMENTS--(Continued)

                                        
The following is a summary of the components of total comprehensive income, net
of related income taxes:


<TABLE>
<CAPTION>
                                                                           THREE MONTHS ENDED                 NINE MONTHS ENDED
                                                                             SEPTEMBER 30,                      SEPTEMBER 30,
                                                                   ------------------------------      ----------------------------
                                                                         1998              1997             1998             1997
                                                                   ------------      ------------      -----------      -----------
<S>                                                                   <C>               <C>               <C>              <C>
    Net income..............................................            $11,167           $10,054          $29,092          $26,870
    Foreign currency translation adjustment.................                (33)             (283)            (158)            (236)
                                                                        -------           -------          -------          -------
         Total comprehensive income.........................            $11,134           $ 9,771          $28,934          $26,634
                                                                        =======           =======          =======          =======
</TABLE>

NOTE 6--INVESTMENT IN JOINT VENTURE

   During the third quarter, the Company entered into an agreement to invest in
a new limited liability company ("LLC") with First Data Financial Services,
LLC and Global Cash Access. The joint venture will provide cash advance and
related services to the gaming business. The Company invested $35 million in
cash, in addition to its interest in existing gaming contracts and gaming
related assets, for a 21 percent ownership in the LLC. The Company recorded
assets in its investment in the joint venture in the amount of $27.2 million.
The difference is goodwill, which represents the excess of the purchase
price over the estimated fair value of identifiable net assets associated with
the above transaction. Goodwill is amortized on a straight-line basis over 15
years. For further disclosure, see Management's Discussion and Analysis of
Financial Condition and Results of Operations--"Highlights" on page 9.


NOTE 7--SUBSEQUENT EVENT

   On October 22, 1998, at a meeting of the Board of Directors of the Company, a
representative of the Bank presented a proposal to the Board of Directors of the
Company regarding the possible acquisition for cash of all of the outstanding
shares of Class A Common Stock of the Company. The Bank indicated at the meeting
a willingness to acquire such shares at a cash price per share of $15.50.

   At the October 22, 1998 Board Meeting, the Board of Directors appointed a
Committee of the Board of Directors comprised of individuals who are
unaffiliated with the Bank and BAC. The Committee was empowered to review and
evaluate the proposal made by the Bank and to engage special counsel and any
other experts necessary to advise and aid the Committee in reviewing the
proposal. For further disclosure, see Management's Discussion and Analysis of
Financial Condition and Results of Operations--"Highlights" on page 9.

                                       8
<PAGE>
 
ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

  The Company has focused its marketing efforts on small and medium sized
merchants due to lower acquisition costs, higher ongoing profitability and
higher retention. The strategy has historically fit well with the Company's
competitive advantage from its relationship with Bank of America.

  The Company will continue to refine its strategic focus by leveraging four key
opportunities:

  First, extend the Company's marketing programs to the approximately 2,800 new
full service banking centers which the Company can access as a result of the
merger of Bank of America and  NationsBank; second, focus sales efforts on
value creating merchant accounts; third, utilize a more refined account
valuation model to actively manage the Company's existing portfolio; and
finally, continue to explore opportunities for expense reductions.

  The recently completed merger between BAC and NationsBank provides
the Company with access to 2,800 additional full service banking centers,
approximately 900,000 additional business banking relationships and
significantly expanded On-Us capabilities. This will require recruiting and
retaining new skilled sales associates and, likely, opening a regional sales and
customer service facility in the Southeast. There can be no assurance that the
Company will continue its current relationship as the principal merchant
processing servicer for the combined organization or that the relationship
will be profitable to the Company.

  The Company has historically focused its sales efforts on small and medium
sized markets. The Company is increasing its sales efforts on businesses in this
size range through a combination of life-of-relationship pricing strategies,
sales incentives and joint marketing programs with Bank of America. Portfolio
management responsibilities and compensation of the portfolio account managers
will also be focused on retaining and growing merchant relationships in this
market segment.

  The Company intends to maintain its focus on controlling expenses. The
installation of HostLink II, the Company's enhanced in-house transaction
processing system, will allow the Company to move merchants from third party
vendors to the more cost-efficient HostLink system, providing the potential
for additional cost per transaction savings to the Company.

  The Company faces market risks from potential economic downturns which could
affect growth in retail transaction volumes or increase losses from chargebacks
and further currency devaluation. Further, the Company may not be successful
in implementing its strategies. Risk could also arise in unforeseen delays in
Year 2000 compliance efforts, inability of the Company to hire or retain
qualified sales staff and continued industry-wide compression in pricing
margins.

HIGHLIGHTS

  On April 13, 1998, BankAmerica Corporation (BAC) and NationsBank Corporation
(NBC) announced a definitive agreement to merge in a stock-for-stock
transaction.  The merger closed on September 30, 1998.  Under various
contractual agreements with BAC (described on page 7 of the Company's Annual
Report on Form 10-K under "Relationship with BankAmerica and the Bank"), the
Company has access to BAC's client base, the Bank of America name and
trademarks, the implementation of On-Us transaction processing and marketing,
the Bank's distribution channels, and credit and debit card association and
network sponsorships.

                                       9
<PAGE>
 
  On May 29 1998, the Company announced that BAC and NBC had jointly determined
that the Company will be the principal merchant processing servicer for the
combined  organization following the merger.  The new BAC franchise will have
approximately 4,800 retail branches in twenty-two states.  The Company believes
the opportunity to be the principal merchant acquirer for new business with
access to the extended BAC retail branch network may be a significant source of
potential revenue growth for the Company. However, the Company cannot at this
time estimate the impact this may have on its financial position or results of
operation. NBC previously offered merchant processing services through a
minority-owned interest in a venture with another merchant processing
provider. On November 13, 1998, BAC announced it had signed a letter of intent
to sell its minority interest to its venture partner. At this time, the
Company cannot determine what impact, if any, the proposed sale may have on its
financial position or results of operations.

  On July 9, 1998, the Company entered into an agreement to invest in a new
limited liability company ("LLC") with First Data Financial Services, LLC and
Global Cash Access ("Global"). The joint venture will provide cash advance and
related services, as described below, to the gaming business. The Company
received its required regulatory approval and made its investments in the LLC on
September 10, 1998. The name of the new entity is BMCF Gaming, LLC. The Company
invested $35 million in cash, plus all interest earned during the escrow period
of July 9, 1998 to September 10, 1998, in addition to its interest in existing
gaming contracts and gaming-related assets, for a 21 percent ownership in the
LLC. The LLC will provide the following services in gaming areas and to gaming
establishments and/or patrons at gaming establishments: a) credit and debit card
cash advance services, b) ATM Services, c) development and operation of a
cashless gaming system for use in slot machines and similar gaming devices by
gaming patrons, d) check verification and guarantee services at gaming
establishments, e) operations of financial services booths located on the
premises of gaming establishments, and f) single system financial services
authorization platforms to be utilized by gaming establishments.

  On October 31, 1998, the Company closed its merchant processing operations in 
Thailand. For the first nine months of 1998, the Company's operations in 
Thailand lost approximately $0.3 million after tax. The Company's financial 
results for third quarter, 1998 includes a $260,000 pre-tax charge to pay for 
closure-related costs.

  On October 22, 1998, at a meeting of the Board of Directors of the Company, a 
representative of the Bank presented a proposal to the Board of Directors of the
Company regarding the possible acquisition for cash of all of the outstanding 
shares of Class A Common Stock of the Company. The Bank indicated at the meeting
a willingness to acquire such shares at a cash price per share of $15.50.

  The Bank's proposed transaction, as currently presented, would be structured
as a merger. Consummation of the  transaction would be subject to negotiation of
a definitive agreement, the approval of the Board of Directors and the
stockholders of the Company, as well as other customary conditions, including
any necessary regulatory approvals. The Bank however has the option to acquire
shares of Class A Stock on a basis other than a merger, including by a tender
offer or otherwise.

  At the October 22, 1998 Board meeting, the Board of Directors appointed a
Committee of the Board of Directors comprised of individuals who are
unaffiliated with the Bank and BAC. The Committee was empowered to review and
evaluate the proposal made by the Bank and to engage special counsel and any
other experts necessary to advise and aid the Committee in reviewing the
proposal. The Board of Directors, in a meeting held on November 10, 1998,
further defined the Committee's role to include, among other matters, advising
the Board of Directors on the Bank's proposal, engaging in negotiations with the
Bank with respect to the proposal and taking such further actions as the
Committee may deem appropriate. The Committee has retained legal counsel and
investment bankers to assist it in fulfilling its responsibilities.

  The Bank is the record owner of all of the Company's currently outstanding
Class B shares, which represents approximately 66.6% of the outstanding Class A
and Class B Common Stock of the Company and approximately 95.2% of the combined
voting power of the two classes of common stock.  One share of Class B Common
Stock is convertible into one share of Class A Common Stock under conditions set
forth in the Company's Amended and Restated Certificate of Incorporation.

                                       10
<PAGE>
 
     At this time, the Company cannot determine the outcome of the negotiations
including the price and other terms of any transaction or whether a transaction
will be completed.


RESULTS OF OPERATIONS

THIRD QUARTER REVIEW

     Net Revenue  - For the three month period ended September 30, 1998, net
revenue was $48.7 million, up $7.5 million, or 18 percent over the three month
period ended September 30, 1997. The increase was primarily attributable to a
$1.8 billion or 21 percent increase in sales volume processed over the
comparable prior year quarter.  Increased sales volume resulted primarily from
growth in the Company's merchant base through continued emphasis on marketing
and sales growth, including expansion into new sales territories.  The growth
rate in net revenue was lower than that for sales volume processed primarily as
a result of greater sales volume growth in lower spread business (debit card and
high volume merchants) and to a lesser degree, declining spreads in existing
business consistent with historical competitive trends in the merchant
processing industry.

  Operating Expense  -  Total operating expense was $31.5 million for the third
quarter of 1998, an increase of $5.3 million, or 20 percent over the same period
a year ago.  On the same comparative basis, salaries and employee benefits
increased $1.4 million or 16 percent, reflecting growth in direct sales staff
and related support personnel. Data processing and communications expense
increased $2.6 million, or 31 percent.  This increase was primarily related to
higher authorization expense and data processing contract services related to
growth in transaction volume, net of reductions in other data processing costs
as a result of the conversion of United States merchants from the old
transaction processing system to HostLINK(TM) during the second quarter of 1997.
Depreciation expense increased $1.3 million or 45 percent primarily due to the
acquisition of merchant processing terminals required for the Company's expanded
merchant base. Amortization of intangibles increased $0.5 million related to
amortization of the portfolio of merchant processing contracts acquired in
September 1997.

  Net Income - The Company earned net income of $11.2 million for the third
quarter of 1998, an increase of $1.1 million or 11 percent over the same
period a year ago. Net income from domestic operations for the third quarter
of 1998 increased approximately $1.4 million or 14 percent over the comparable
quarter in 1997. This improvement was a result of an increase in domestic net
revenue of $7.9 million or 21 percent over the third quarter of 1997 on an
increase in sales volume processed of $1.8 billion or 21 percent. Third
quarter 1998 net income from the Company's Asian operations decreased 49
percent as compared to the third quarter of 1997, primarily related to a 15
percent decrease in net revenue, reflecting both increased competition and the
area's economic turmoil.

                                       11
<PAGE>
 
NINE MONTH REVIEW

  Net Revenue - Net revenue was $135.8 million for the first nine months of
1998, up 17 percent over the 1997 comparable period. Sales volume processed for
the nine months ended September 30, 1998 was $29.8 billion, an increase of
$5.7 billion or 24 percent over the first nine months of 1997. The net revenue
percentage growth rate was lower than the sales volume processed growth rate
for the third quarter of 1998 for the same reasons discussed above.

  Operating Expense - Total operating expense for the first nine months of 1998
was $91.9 million, up 21 percent over the 1997 comparable period.  On the same
comparative basis, salaries and employee benefits increased $4.8 million (19
percent), data processing and communications increased $5.5 million (23
percent), general and administrative increased $1.0 million (5 percent),
depreciation increased $3.5 million (44 percent) and amortization of intangibles
increased $1.1 million.  Increases in those expense categories were
substantially due to the same reasons cited for the third quarter expense
comparisons above. The Company has decreased expense per transaction from $.34 
in 1993 to $.18 for the first nine months in 1998.

  Net Income - The Company earned net income of $29.1 million for the first nine
months of 1998, an increase of $2.2 million or 8 percent over the same period
a year ago. Net income from domestic operations for the 1998 period was $28.7
million, an increase of $3.2 million or 13 percent over the comparable 1997
period. This improvement was the result of an increase in domestic net revenue
of $22.2 million or 21 percent over the comparable 1997 period on an increase
in sales volume processed of $5.7 billion or 25 percent. Net income from the
Company's Asian operations for the first nine months of 1998 decreased 70
percent from the same period in 1997 reflecting both increased competition and
the area's economic turmoil.

BALANCE SHEET REVIEW

  The Company's assets totaled $354.3 million as of September 30, 1998, up $26.2
million from December 31, 1997.  The balances in cash and cash equivalents,
short-term investments, drafts in transit and merchants payable can fluctuate
greatly depending on the day of the week in which the reporting period ends.
The timing of payments received from credit card associations and debit card
networks, remittances to merchants and weekend processing influence these
balances.  While the individual balances in these accounts at September 30, 1998
were significantly different from the balances at December 31, 1997, the net
total of these combined accounts was $191.5 million at September 30, 1998,
versus $191.8 million at December 31, 1997.  Investment in joint venture
increased $27.2 million since December 31, 1997 as a result of the investment in
BMCF Gaming, LLC.

LIQUIDITY AND CAPITAL RESOURCES

  The Company generated net cash from operating activities of $45.3 million and
$38.7 million for the nine month periods ended September 30, 1998 and 1997,
respectively.  The net cash provided by operating activities for the 1998 period
was primarily related to net income adjusted for non-cash depreciation and
amortization of $41.8 million.  Prior to the time BAC transferred its merchant
processing businesses to the Company, funds generated by the Company's
operations and not used for investments were remitted to BAC.

  Working capital decreased by $4.4 million to $234.4 million at September 30,
1998.  The Company anticipates that its cash and cash equivalent and short-term
investment balances will be adequate for funding the daily cash needs of the
business as well as for acquisitions, strategic technology investments and the
funding of research and product development.

  The Company has a commitment for a $100 million revolving line of credit with
Bank of America expiring May 31, 1999.  Borrowings outstanding under the
commitment amounted to $1.8 million as of September 30, 1998.

                                       12
<PAGE>
 
YEAR 2000

   Because computers frequently use only two digits to recognize years, on 
January 1, 2000, many computer systems, as well as any equipment that uses 
embedded computer chips, may be unable to distinguish between 1900 and 2000. If 
not remediated, this problem could create system errors and failures resulting 
in the disruption of normal business operations. Since the Year 2000 is a leap 
year, there could also be business disruptions as a result of the inability of 
many computer systems to recognize February 29, 2000.

   The Company has instituted  a comprehensive program to ensure that its
computer systems and applications will be ready for the Year 2000.  The program,
headed by a senior officer of the Company, includes the following:

 .  review and testing internally used software and systems for Year 2000
   compliance;
 .  remediating internally used software and systems that are not Year 2000
   compliant;
 .  certifying internally used software and systems  for Year 2000 compliance;
 .  reviewing the status of key business partners with Year 2000 compliance;
 .  developing contingency plans in case the Company encounters any difficulties
   with the Year 2000 date change either from its internal systems or from key
   business partners.

   The Company expects that it will be ready for the Year 2000 date change, and
its goal is to have all of its internal systems tested and certified for Year
2000 compliance by the end of 1998.  BAMS has completed testing and
certification of its back office operation system, all desktop environments and
all of its point-of-sale terminal applications.  BAMS has not completed testing
and certification of its chargeback imaging system, but expects to have that
system tested and certified for Year 2000 compliance by November 30, 1998.  The
testing and certification of its HostLINK system has been completed.

   The Company has undertaken to review the status of Year 2000 compliance of
key suppliers. Letters of certification have been received from all major third-
party processing vendors with the exception of Total Systems. A project plan has
been received from Total Systems. The Company has been conducting internal
testing on Total Systems since October 19, 1998. The Company expects to complete
its testing and certification by year-end 1998.

   The Company estimates that it will spend a total of approximately $350,000 in
preparation for the Year 2000.  Of that amount, the Company has spent
approximately $240,000 in its compliance efforts, including $80,000 in 1998
year-to-date.  The Company does not believe the cost incurred in its Year 2000
compliance efforts will be material in any one quarter. Costs are expensed as
they are incurred by the Company. At this time, Year 2000 has caused no
significant delays or cancellations to any project having a material impact on
the financial condition of the Company.

   The Company is taking inventory of equipment that uses embedded computer 
chips (i.e., "non-information technology systems" or "Infrastructure") and is
in the process of scheduling remediation or replacement of this Infrastructure, 
as necessary. Examples of Infrastructure include building security systems, fire
alarm systems, identification and access cards, date stamps and elevators.

   The Company believes it is taking all appropriate measures to prepare for the
Year 2000 date change.  Ultimately, the potential impact of the Year 2000 issue
will depend not only on the corrective measures the Company undertakes, but also
on the way in which the Year 2000 issue is addressed by businesses and other
entities who provide data to, or receive data from the Company, or whose
financial condition or operational capability is important to the Company as
suppliers or customers.  Consequences of a failure of the Company or its key
business partners to be Year 2000 compliant include the Company having to resort
to voice authorizations and paper draft processing for a portion of its
merchants for purposes of maintaining ongoing business.  Consequently, no
assurances can be made that Year 2000 compliance can be achieved without costs
and uncertainties that might have a material adverse effect on the Company's
financial condition, business or results of operations.


FORWARD-LOOKING STATEMENTS

   This report contains forward-looking statements, usually containing the words
"estimate", "project", "expect" or similar expressions. These statements are
subject to uncertainties, including those discussed in this report and in
Management's Discussion and Analysis of Financial Condition and Results of
Operations - "Forward-Looking Statements" in BAMS' Annual Report on Form 10-K
for the year ended December 31, 1997, that could cause actual results to differ
materially. Readers are cautioned not to place undue reliance on these forward-
looking statements, which speak only as of the date hereof.

                                       13
<PAGE>
 
  PART II    OTHER INFORMATION

ITEM 6.   EXHIBITS AND REPORTS ON FORM 8-K
-------------------------------------------

(a)  Exhibits:

     27   Financial Data Schedule

                                       14
<PAGE>
 
SIGNATURES
--------------------------------------------------------------------------------


               Pursuant to the requirements of the Securities Exchange Act of
               1934, the registrant has duly caused this report to be signed on
               its behalf by the undersigned, thereunto duly authorized.


                              BA MERCHANT SERVICES, INC.
                              (Registrant)


                              By Principal Executive Officer and
                              Duly Authorized Signatory:


                              /s/ Sharif M. Bayyari
                              ----------------------------------------
                              SHARIF M. BAYYARI
                              President and Chief Executive Officer
                              November 13, 1998



                              By Principal Financial Officer and
                              Duly Authorized Signatory:


                              /s/ James H. Williams
                              ----------------------------------------
                              JAMES H. WILLIAMS
                              Executive Vice President, Chief Financial Officer
                              and Chief Accounting Officer
                              November 13, 1998

                                       15
<PAGE>
 
                                 EXHIBIT INDEX
                                        

EXHIBIT
REFERENCE     DESCRIPTION
---------     -----------       

27            Financial Data Schedule

                                       16