SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549


                                    _____

                                   FORM 10-K

(Mark One)

         [X]   ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
         EXCHANGE ACT OF 1934

         For the fiscal year ended:   December 31, 1998
                                      -----------------

                                      OR

         [ ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE 
         SECURITIES EXCHANGE ACT OF 1934

         For the transition period from _______  to ___________ 

                     Commission file number: 333-45887-11
                                             -------------


                                  CWMBS, Inc.
                Residential Asset Securitization Trust 1998-A6
               Mortgage Pass-Through Certificates, Series 1998-F
               -------------------------------------------------
            (Exact name of Registrant as specified in its charter)


              Delaware                                      95-4449516
----------------------------------           ---------------------------------
(State or other jurisdiction of           (IRS Employer Identification Number)
   incorporation or organization)

c/o    The Bank of New York
       101 Barclay Street
       New York, New York                                    10286 
-----------------------------------        -----------------------------------
(Address of principal executive offices)                 (Zip Code)

Registrant's telephone number, including area code:   (212) 815-2007
                                                      --------------

Securities registered pursuant to Section 12(b) of the Act:  None
                                                             ----

Securities registered pursuant to Section 12(g) of the Act:  None
                                                             ----


<PAGE>


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 by check mark if disclosure of delinquent filers pursuant to item 405
of Regulation S-K is not contained herein, and will be contained, to the best
of Registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to
this Form 10-K. [ ]

State the aggregate market value of the voting and non-voting common equity
held by non-affiliates of the Registrant: Not applicable
                                          --------------

Indicate the number of shares of common stock of the Registrant outstanding as
of December 31, 1998: Not applicable
                      --------------


<PAGE>


DOCUMENTS INCORPORATED BY REFERENCE


                                     None.


                                     * * *


         This Annual Report on Form 10-K (the "Report") is filed with respect
to the trust fund entitled Residential Asset Securitization Trust 1998-A6 (the
"Trust Fund") formed pursuant to the pooling and servicing agreement dated as
of May 1, 1998 (the "Pooling and Servicing Agreement") among CWMBS, Inc., as
depositor (the "Company"), IndyMac, Inc., as seller and master servicer (the
"Master Servicer"), and The Bank of New York, as trustee (the "Trustee"), for
the issuance of CWMBS, Inc., Mortgage Pass-Through Certificates, Series 1998-F
(the "Certificates"). Certain information otherwise required to be included in
this Report by the Instructions to Form 10-K has been omitted in reliance on
the relief granted to the Company in CWMBS, Inc. (February 3, 1994) (the
"Relief Letter").


<PAGE>


PART I


ITEM 1.  BUSINESS

         Not applicable.  See the Relief Letter.

ITEM 2.  PROPERTIES

         Not applicable.  See the Relief Letter.

ITEM 3.  LEGAL PROCEEDINGS

         There were no material pending legal proceedings relating to
         the Trust Fund to which any of the Trust Fund, the Trustee,
         the Master Servicer or the Company was a party or of which
         any of their respective properties was the subject during
         the fiscal year covered by this Report, nor is the Company
         aware of any such proceedings contemplated by governmental
         authorities.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

         No matter was submitted to a vote of Certificateholders, and
         no Certificateholder consent was solicited during the fiscal
         year covered by this Report.


<PAGE>


PART II


ITEM 5.  MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

         (a)    There is no established public trading market for the 
         Certificates.

         (b)    As of December 31, 1998, there were 5 holders of record
         of the Certificates.

         (c)    Not applicable. (Information as to distributions to
         Certificateholders is provided in the Registrant's monthly
         filings on Form 8-K.)

ITEM 6.  SELECTED FINANCIAL DATA

         Not applicable.  See the Relief Letter.

ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND 
         RESULTS OF OPERATIONS

         Not applicable.  See the Relief Letter.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

         Not applicable.  See the Relief Letter.

ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND 
         FINANCIAL DISCLOSURE

         None.


<PAGE>


PART III


ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

         Not applicable.  See the Relief Letter.

ITEM 11. EXECUTIVE COMPENSATION

         Not applicable.  See the Relief Letter.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

         (a)      Not applicable.  See the Relief Letter.

         (b)      Not applicable.  See the Relief Letter.

         (c)      Not applicable.  See the Relief Letter.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

         (a)      Not applicable.  See the Relief Letter.


<PAGE>


PART IV


ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

                     (a) (1) Pursuant to the Pooling and Servicing Agreement, 
                the Master Servicer is required (i) to deliver an annual
                statement as to compliance with the provisions of the Pooling
                and Servicing Agreement and certain other matters (the "Annual
                Statement of the Master Servicer") and (ii) to cause a firm of
                independent public accountants to deliver an annual report as
                to compliance with the servicing provisions of the Pooling and
                Servicing Agreement (the "Annual Report of the Firm of
                Accountants"). Both the Annual Statement of the Master
                Servicer and the Annual Report of the Firm of Accountants are
                attached as Exhibits 99.1 and 99.2, respectively, to this
                Report.

           (2)  Not applicable.

           (3)  The required exhibits are as follows:

                            Exhibit 3(i):  Copy of Company's Certificate of
                Incorporation (Filed as an Exhibit to Registration Statement 
                on Form S-11 (File No. 33-63714)).

                            Exhibit 3(ii):  Copy of Company's By-laws (Filed 
                as an Exhibit to Registration Statement on Form S-11 (File No.
                33-63714)).

                            Exhibit 4:  Pooling and Servicing Agreement (Filed
                as part of the Registrant's Current Report on Form 8-K filed 
                on March 16, 1999).

                            Exhibit 99.1:  Annual Statement of the Master
                Servicer.

                            Exhibit 99.2:  Annual Report of the Firm of
                Accountants.


<PAGE>


                  (b) Current Reports on Form 8-K filed during the last
                  quarter of the period covered by this Report:


                  Date of Current Report            Item Reported
                  ----------------------          ------------------

                  October 26, 1998       Monthly report sent to 
                                         Certificateholders with the
                                         October 1998 distribution

                  November 25, 1998      Monthly report sent to 
                                         Certificateholders with the
                                         November 1998 distribution

                  December 28, 1998      Monthly report sent to 
                                         Certificateholders with the
                                         December 1998 distribution


                  (c)      See subparagraph (a)(3) above.

                  (d)      Not applicable.  See the Relief Letter.

         SUPPLEMENTAL INFORMATION TO BE FURNISHED WITH REPORTS FILED PURSUANT
TO SECTION 15(d) OF THE ACT BY REGISTRANTS WHICH HAVE NOT REGISTERED
SECURITIES PURSUANT TO SECTION 12 OF THE ACT.

         No such annual report, proxy statement, form of proxy or other
soliciting material has been sent to Certificateholders.  See the Relief
Letter.


<PAGE>


SIGNATURES

         Pursuant to the requirements of Section 13 or 15(d) 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.

                                   CWMBS, INC.,
                                   RESIDENTIAL ASSET SECURITIZATION TRUST 
                                   1998-A6, MORTGAGE PASS-THROUGH
                                   CERTIFICATES, SERIES 1998-F

                                   By:   The Bank of New York, 
                                         as Trustee*


                                   By:   /s/ Kelly Sheahan                
                                        -------------------------
                                        Name:  Kelly Sheahan
                                        Title: Assistant Vice President

                                   Date:  March 31, 1999








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

*        This Report is being filed by the Trustee on behalf of the Trust Fund.
         The Trust Fund does not have any officers or directors.


<PAGE>


EXHIBIT INDEX


                                                                   Sequential
Exhibit  Document                                                 Page Number
-----------------                                                -------------

3(i)      Company's Certificate of Incorporation (Filed
          as an Exhibit to Registration Statement on
          Form S-11 (File No. 33-63714)) *

3(ii)     Company's By-laws (Filed as an Exhibit to
          Registration Statement on Form S-11 (File
          No. 33-63714)) *

4         Pooling and Servicing Agreement (Filed as
          part of the Company's Current Report on
          Form 8-K filed on March 16, 1999) *

99.1      Annual Statement of the Master Servicer.....................12

99.2      Annual Report of the Firm of Accountants....................14












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

*        Incorporated herein by reference.


<PAGE>


                                 Exhibit 99.1
                                 ------------


<PAGE>


INDYMAC, INC.


                             OFFICERS' CERTIFICATE
                    ANNUAL STATEMENT OF THE MASTER SERVICER


                                  CWMBS, INC.
                RESIDENTIAL ASSET SECURITIZATION TRUST 1998-A6
               MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 1998-F


         The undersigned do hereby certify that they are each an officer of
IndyMac, Inc. (f/k/a Independent National Mortgage Corporation) (the "Master
Servicer") and do hereby further certify pursuant to Section 3.19 of the
Pooling and Servicing Agreement for the above-captioned Series (the
"Agreement") that:

                           (i) A review of the activities of the Master
                           Servicer during the preceding calendar year and of
                           the performance of the Master Servicer under the
                           Agreement has been made under our supervision;

                           (ii) To the best of our knowledge, based on such
                           review, the Master Servicer has fulfilled all its
                           obligations under the Agreement throughout such
                           year; and

                           (iii) To the best of our knowledge, each Servicer
                           has fulfilled all its obligations under its
                           Servicing Agreement throughout such year
                           (capitalized terms used in this subparagraph (iii)
                           shall have the meanings assigned to such terms in
                           the Agreement).




/s/ Jim Banks                                 Dated: 3/30/99

JIM BANKS
EXECUTIVE VICE PRESIDENT


/s/ John Kim                                  Dated: 3/30/99

JOHN KIM
VICE PRESIDENT


<PAGE>


                                 Exhibit 99.2
                                 ------------


<PAGE>


              REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
              --------------------------------------------------


IndyMac, Inc.

We have examined management's assertion about IndyMac, Inc.'s compliance with
the minimum servicing standards identified in the Mortgage Bankers Association
of America's Uniform Single Attestation Program for Mortgage Bankers (USAP) in
             -------------------------------------------------------
its capacity as a Master Servicer as of and for the year ended December 31,
1998, included in the accompanying management assertion. Management is
responsible for IndyMac, Inc.'s compliance with those minimum servicing
standards. Our responsibility is to express an opinion on management's
assertion about the entity's compliance based on our examination.

Our examination was made in accordance with standards established by the
American Institute of Certified Public Accountants and, accordingly, included
examining, on a test basis, evidence about IndyMac, Inc.'s compliance with the
minimum servicing standards and performing such other procedures as we
considered necessary in the circumstances. We believe that our examination
provides a reasonable basis for our opinion. Our examination does not provide
a legal determination on IndyMac, Inc.'s compliance with the minimum servicing
standards.

In our opinion, management's assertion that IndyMac, Inc. complied with the
aforementioned minimum servicing standards as of and for the year ended
December 31, 1998 is fairly stated, in all material respects.


/s/   Grant Thornton LLP


Los Angeles, California
February 26, 1999


<PAGE>


                                                                [LOGO] IndyMac


February 26, 1999


Grant Thornton LLP
1000 Wilshire Blvd., Suite 700
Los Angeles, CA  90017


                            Management's Assertion


As of and for the year ended December 31, 1998, IndyMac Inc. has complied in
all material respects with the minimum servicing standards, in its capacity as
a master servicer, as set forth in the Mortgage Bankers Association of
America's Uniform Single Attestation Program for Mortgage Bankers. As of and
          --------------------------------------------------------
for the year ended December 31, 1998, IndyMac had in effect fidelity bond and
mortgage impairment errors and omissions policies in the amounts of
$30,000,000 and $10,000,000, respectively.


Very truly yours,

IndyMac, Inc.


/s/   Michael W. Perry
--------------------------------------------------------------------------
Michael W. Perry   President and Chief Executive Officer


/s/   Carmella Grahn
--------------------------------------------------------------------------
Carmella Grahn     Executive Vice President and Chief Financial Officer











                                                  155 North Lake Avenue
                                                  Pasadena, California 91101
                                                  Telephone: 800.669.2300
                                                  http://www.indymac.com