UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                         Post-Effective Amendment No. 7
                    to Registration Statement No. 333-114888
                                    Form S-1

                                      Under

                           The Securities Act of 1933

                      RiverSource Life Insurance Company
                   (previously IDS Life Insurance Company)

- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

                                    Minnesota

- --------------------------------------------------------------------------------
         (State or other jurisdiction of incorporation or organization)

                                   41-0823832

- --------------------------------------------------------------------------------
                      (I.R.S. Employer Identification No.)

                70100 Ameriprise Financial Center, Minneapolis, MN 55474
                                 (800) 862-7919

- --------------------------------------------------------------------------------
       (Address, including zip code, and telephone number, including area code,
               of registrant's principal executive offices)

                               Mary Ellyn Minenko

            50605 Ameriprise Financial Center, Minneapolis, Minnesota 55474
                                 (612) 671-3678

- --------------------------------------------------------------------------------
            Name, address, including zip code, and telephone number,
                   including area code, of agent for service)


It is proposed that this filing become effective on Jan. 2, 2007.

If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, check the following box. /X/

Pursuant to Rule 429 under the Securities Act of 1933, the prospectuses
contained or incorporated herein by reference also relate to and constitute a
post-effective amendment to Securities Act Registration Statement No. 33-28976.

The prospectus filed electronically herewith is not intended to supersede
prospectuses filed with the Post-Effective Amendment No. 5 to Registration
Statement No. 333-114888, filed on or about April 26, 2006.


                         Calculation of Registration Fee

<Table>
<Caption>
 TITLE OF EACH CLASS                           PROPOSED MAXIMUM      PROPOSED MAXIMUM
 OF SECURITIES TO BE         AMOUNT TO BE     OFFERING PRICE PER    AGGREGATE OFFERING       AMOUNT OF
      REGISTERED              REGISTERED             UNIT                 PRICE          REGISTRATION FEE
- -----------------------     ---------------   ------------------    ------------------    ----------------
                                                                             
Interests in market         N/A
value adjusted annuity
contracts and accounts
of RiverSource
Retirement Advisor 4
Advantage Variable
Annuity, RiverSource
Retirement Advisor 4
Select Variable
Annuity, and RiverSource
Retirement Advisor 4 Access
Variable Annuity.
</Table>


                                     PART I.

                       INFORMATION REQUIRED IN PROSPECTUS

The prospectus for RiverSource Retirement Advisor 4 Advantage(SM) Variable
Annuity/RiverSource Retirement Advisor 4 Select(SM) Variable Annuity/RiverSource
Retirement Advisor 4 Access Variable Annuity is incorporated by reference from
Part A of Post-Effective Amendment No. 41 to Registration Statement No.
333-79311, filed on or about Jan. 2, 2007.


                                    PART II.

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 13.       Other Expenses of Issuance and Distribution

The expenses of the issuance and distribution of the interests in the
RiverSource Account MGA (previously IDS Life Account MGA) of RiverSource Life
Insurance Company (previously IDS Life Insurance Company) to be registered,
other than commissions on sales of the Contracts, are to be borne by the
registrant.

Item 14.       Indemnification of Directors and Officers

The amended and restated By-Laws of the depositor provide that the depositor
will indemnify, to the fullest extent now or hereafter provided for or permitted
by law, each person involved in, or made or threatened to be made a party to,
any action, suit, claim or proceeding, whether civil or criminal, including any
investigative, administrative, legislative, or other proceeding, and including
any action by or in the right of the depositor or any other corporation, or any
partnership, joint venture, trust, employee benefit plan, or other enterprise
(any such entity, other than the depositor, being hereinafter referred to as an
"Enterprise"), and including appeals therein (any such action or process being
hereinafter referred to as a "Proceeding"), by reason of the fact that such
person, such person's testator or intestate (i) is or was a director or officer
of the depositor, or (ii) is or was serving, at the request of the depositor, as
a director, officer, or in any other capacity, or any other Enterprise, against
any and all judgments, amounts paid in settlement, and expenses, including
attorney's fees, actually and reasonably incurred as a result of or in
connection with any Proceeding, except as provided below.

No indemnification will be made to or on behalf of any such person if a judgment
or other final adjudication adverse to such person establishes that such
person's acts were committed in bad faith or were the result of active and
deliberate dishonesty and were material to the cause of action so adjudicated,
or that such person personally gained in fact a financial profit or other
advantage to which such person was not legally entitled. In addition, no
indemnification will be made with respect to any Proceeding initiated by any
such person against the depositor, or a director or officer of the depositor,
other than to enforce the terms of this indemnification provision, unless such
Proceeding was authorized by the Board of Directors of the depositor. Further,
no indemnification will be made with respect to any settlement or compromise of
any Proceeding unless and until the depositor has consented to such settlement
or compromise.

The depositor may, from time to time, with the approval of the Board of
Directors, and to the extent authorized, grant rights to indemnification, and to
the advancement of expenses, to any employee or agent of the depositor or to any
person serving at the request of the depositor as a director or officer, or in
any other capacity, of any other Enterprise, to the fullest extent of the
provisions with respect to the indemnification and advancement of expenses of
directors and officers of the depositor.

Insofar as indemnification for liability arising under the Securities Act of
1933 (the "Act") may be permitted to directors, officers and controlling persons
of the depositor or the registrant pursuant to the foregoing provisions, or
otherwise, the registrant has been advised that in the opinion of the Securities
and Exchange Commission such indemnification is against public policy as
expressed in the Act and is, therefore, unenforceable. In the event that a claim
for indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

Item 15.       Recent Sales of Unregistered Securities
Not Applicable.


Item 16.       (A) Exhibits

         1.       Form of Principal Underwriter Agreement for RiverSource Life
                  Insurance Company Variable Annuities and Variable Life
                  Insurance filed electronically as Exhibit 3.1 to the
                  Initial Registration Statement on Form N-4 for RiverSource
                  Variable Annuity Account (previously American Enterprise
                  Variable Annuity Account), RiverSource Signature(SM) Select
                  Variable Annuity and RiverSource Signature(SM) Variable
                  Annuity, on or about Jan. 2, 2007, is incorporated by
                  reference.

         2.       Not Applicable.

         3.1      Copy of Certificate of Incorporation of IDS Life Insurance
                  Company filed electronically as Exhibit 3.1 to Post-Effective
                  Amendment No. 5 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.

         3.2      Copy of Certificate of Amendment of Certificate of
                  Incorporation of IDS Life Insurance Company dated June 22,
                  2006, filed electronically as Exhibit 27(f)(1) to
                  Post-Effective Amendment No. 28 to Registration Statement
                  No. 333-69777 is incorporated by reference.

         3.3      Copy of Amended and Restated By-Laws of RiverSource Life
                  Insurance Company filed electronically as Exhibit 27(f)(2)
                  to Post-Effective Amendment No. 28 to Registration Statement
                  No. 333-69777 is incorporated by reference.

         3.4      Copy of Resolution of the Board of Directors of IDS Life
                  Insurance Company, dated May 5, 1989, establishing IDS Life
                  Account MGA filed electronically as Exhibit 3.3 to
                  Post-Effective Amendment No. 5 to Registration Statement No.
                  33-28976 is incorporated herein by reference.

         3.5      Unanimous Written Consent of the Board of Directors In
                  Lieu of a Meeting for IDS Life Insurance Company, adopted
                  Dec. 8, 2006 for the Re-designation of the Separate Accounts
                  to Reflect Entity Consolidation and Rebranding filed
                  electronically as Exhibit 27(a)(6) to Post-Effective
                  Amendment No. 28 to Registration Statement No. 333-69777 is
                  incorporated by reference.

         4.1      Copy of Non-tax qualified Group Annuity Contract, Form 30363C,
                  filed electronically as Exhibit 4.1 to Post-Effective
                  Amendment No. 5 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.

         4.2      Copy of Non-tax qualified Group Annuity Certificate, Form
                  30360C, filed electronically as Exhibit 4.2 to Post-Effective
                  Amendment No. 5 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.

         4.3      Copy of Endorsement No. 30340C-GP to the Group Annuity
                  Contract filed electronically as Exhibit 4.3 to Post-Effective
                  Amendment No. 5 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.

         4.4      Copy of Endorsement No. 30340C to the Group Annuity
                  Certificate filed electronically as Exhibit 4.4 to
                  Post-Effective Amendment No. 5 to Registration Statement No.
                  33-28976 is incorporated herein by reference.

         4.5      Copy of Tax qualified Group Annuity Contract, Form 30369C,
                  filed electronically as Exhibit 4.5 to Post-Effective
                  Amendment No. 10 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.

         4.6      Copy of Tax qualified Group Annuity Certificate, Form 30368C,
                  filed electronically as Exhibit 4.6 to Post-Effective
                  Amendment No. 10 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.

         4.7      Copy of Group IRA Annuity Contract, Form 30372C, filed
                  electronically as Exhibit 4.7 to Post-Effective Amendment No.
                  10 to Registration Statement No. 33-28976 is incorporated
                  herein by reference.

         4.8      Copy of Group IRA Annuity Certificate, Form 30371C, filed
                  electronically as Exhibit 4.8 to Post-Effective Amendment No.
                  10 to Registration Statement No. 33-28976 is incorporated
                  herein by reference.

         4.9      Copy of Non-tax qualified Individual Annuity Contract, Form
                  30365D, filed electronically as Exhibit 4.9 to Post-Effective
                  Amendment No. 10 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.


         4.10     Copy of Endorsement No. 30379 to the Individual Annuity
                  Contract, filed electronically as Exhibit 4.10 to
                  Post-Effective Amendment No. 10 to Registration Statement No.
                  33-28976 is incorporated herein by reference.

         4.11     Copy of Tax qualified Individual Annuity Contract, Form
                  30370C, filed electronically as Exhibit 4.11 to Post-Effective
                  Amendment No. 10 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.

         4.12     Copy of Individual IRA Annuity Contract, Form 30373C, filed
                  electronically as Exhibit 4.12 to Post-Effective Amendment No.
                  10 to Registration Statement No. 33-28976 is incorporated
                  herein by reference.

         4.13     Copy of Endorsement No. 33007 filed electronically as Exhibit
                  4.13 to Post-Effective Amendment No. 12 to Registration
                  Statement No. 33-28976 is incorporated herein by reference.

         4.14     Form of Traditional IRA or SEP-IRA Annuity Endorsement (form
                  131061) filed electronically as Exhibit 4.14 to Post-Effective
                  Amendment No. 17 to Registration Statement No. 33-28976 is
                  incorporated herein by reference.

         4.15     Form of Roth IRA Annuity Endorsement (form 131062) filed
                  electronically as Exhibit 4.15 to Post-Effective Amendment No.
                  17 to Registration Statement No. 33-28976 is incorporated
                  herein by reference.

         4.16     Form of Simple IRA Annuity Endorsement (form 131063) filed
                  electronically as Exhibit 4.13 to Post-Effective Amendment
                  No. 14 to Registration Statement No. 333-79311, is
                  incorporated by reference.

         4.17     Form of TSA Endorsement (form 131068), filed electronically
                  as Exhibit 4.17 to Post-Effective Amendment No. 2 to
                  Registration Statement No. 333-79311, is incorporated by
                  reference.

         4.18     Form of Deferred Annuity Contract for Retirement Advisor
                  Advantage Plus (form 1043A) filed electronically as Exhibit
                  4.15 to IDS Life Variable Account 10 Post-Effective Amendment
                  No. 21 to Registration Statement No. 333-79311, filed on or
                  about Jan. 23, 2004, is incorporated by reference.

         4.19     Form of Deferred Annuity Contract for Retirement Advisor
                  Select Plus (form 131041A) filed electronically as Exhibit
                  4.16 to IDS Life Variable Account 10 Post-Effective Amendment
                  No. 21 to Registration Statement No. 333-79311, filed on or
                  about Jan. 23, 2004, is incorporated by reference.

         4.20     Form of Guarantee Period Accounts Rider filed electronically
                  as Exhibit 4.24 to IDS Life Variable Account 10 Post-Effective
                  Amendment No. 25 to Registration Statement No. 333-79311,
                  filed on or about June 2, 2004, is incorporated by reference.

         4.21     Form of Deferred Annuity Contract for RiverSource Retirement
                  Advisor 4 Advantage (form 131101) filed electronically as
                  Exhibit 4.17 to IDS Life Variable Account 10 Post-Effective
                  Amendment No. 40 to Registration Statement No. 333-79311,
                  filed on or about June 5, 2006, is incorporated by reference.

         4.22     Form of Deferred Annuity Contract for RiverSource Retirement
                  Advisor 4 Select Variable Annuity (form 131102) filed
                  electronically as Exhibit 4.18 to IDS Life Variable Account 10
                  Post-Effective Amendment No. 40 to Registration Statement No.
                  333-79311, filed on or about June 5, 2006 is incorporated by
                  reference.

         4.23     Form of Deferred Annuity Contract for RiverSource Retirement
                  Advisor Access Variable Annuity (form 131103) filed
                  electronically as Exhibit 4.19 to IDS Life Variable Account 10
                  Post-Effective Amendment No. 40 to Registration Statement No.
                  333-79311, filed on or about June 5, 2006 is incorporated by
                  reference.

         5.       Opinion of Counsel regarding legality of Contracts is filed
                  electronically herewith.

         6.-20.   Not Applicable.

         21.      Copy of List of Subsidiaries filed electronically as Exhibit
                  22 to Post-Effective Amendment No. 8 to Registration Statement
                  No. 33-28976 is incorporated herein by reference.

         22.      Not Applicable.


         23.      Consent of Independent Registered Public Accounting Firm is
                  filed electronically herewith.

         24.      Power of Attorney to sign Amendments to this Registration
                  Statement, dated Jan. 2, 2007 is filed electronically
                  herewith.

         25.-99.  Not Applicable

Item 17.       Undertakings

A. The Registrant undertakes:

         (1)      to file, during any period in which offers or sales are being
                  made, a post-effective amendment to this Registration
                  Statement:

                  (i)      to include any prospectus required by Section
                           10(a)(3) of the Securities Act of 1933,

                  (ii)     to reflect in the prospectus any facts or events
                           arising after the effective date of the Registration
                           Statement (or the most recent post-effective
                           amendment thereof) which, individually or in the
                           aggregate, represent a fundamental change in the
                           information set forth in the Registration Statement,

                  (iii)    to include any material information with respect to
                           the plan of distribution not previously disclosed in
                           the Registration Statement or any material change to
                           such information in the Registration Statement,

         (2)      that, for the purpose of determining any liability under the
                  Securities Act of 1933, each such post-effective amendment
                  shall be deemed to be a new Registration Statement relating to
                  the securities offered therein, and the offering of such
                  securities at that time may be deemed to be the initial bona
                  fide offering thereof,

         (3)      that all post-effective amendments will comply with the
                  applicable forms, rules and regulations of the Commission in
                  effect at the time such post-effective amendments are filed,
                  and

         (4)      to remove from registration by means of a post-effective
                  amendment any of the securities being registered which remain
                  unsold at the termination of the offering.

B.     The Registrant represents that it is relying upon the no-action assurance
       given to the American Council of Life Insurance (pub. avail. Nov. 28,
       1988). Further, the Registrant represents that it has complied with the
       provisions of paragraphs (1) - (4) of the no-action letter.


                                   SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the Registrant,
RiverSource Life Insurance Company (previously IDS Life Insurance Company),
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized in the City of Minneapolis, and State
of Minnesota on the 2nd day of January, 2007.

                              RiverSource Life Insurance Company
                              (previously IDS Life Insurance Company)
                              ---------------------------------------
                                     (Registrant)

                              By /s/  Timothy V. Bechtold*
                                 ------------------------------------
                                      Timothy V. Bechtold
                                      President

Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement has been signed by the following persons in the capacities indicated
on the 2nd day of January, 2007.

Signature                                     Title

/s/  Gumer C. Alvero*                         Director and Executive Vice
- ------------------------------------          President - Annuities
     Gumer C. Alvero

/s/  Timothy V. Bechtold*                     Director and President
- ------------------------------------
     Timothy V. Bechtold

/s/  Brian J. McGrane*                        Director, Executive Vice
- ------------------------------------          President and Chief Financial
     Brian J. McGrane                         Officer

/s/  Kevin E. Palmer*                         Director, Vice President and
- ------------------------------------          Chief Actuary
     Kevin E. Palmer

/s/  Mark E. Schwarzmann*                     Chairman of the Board and
- ------------------------------------          Chief Executive Officer
     Mark E. Schwarzmann                      (Chief Executive Officer)

/s/  Bridget M. Sperl*                        Executive Vice President -
- ------------------------------------          Client Services
     Bridget M. Sperl

/s/  David K. Stewart*                        Vice President and Controller
- ------------------------------------          (Principal Accounting Officer)
     David K. Stewart

*    Signed pursuant to Power of Attorney dated Jan. 2, 2007 filed
     electronically herewith as Exhibit 24 to Registrant's Post-Effective
     Amendment No. 7, by:

/s/ Mary Ellyn Minenko
- ----------------------
    Mary Ellyn Minenko
    Assistant General Counsel