Exhibit e (vi)


USAA Investment Management Company
9800 Fredericksburg Road
San Antonio, TX  78288

Gentlemen:

     Pursuant to paragraph 12 of the Underwriting Agreement dated as of June 25,
1993, as amended, between USAA Mutual Funds Trust (the Trust), formerly known as
USAA  State  Tax-Free  Trust,  and  USAA  Investment   Management  Company  (the
Underwriter), please be advised that the Trust has established one new series of
its shares (New Fund) as set forth below:

                 -----------------------------------------------
                             Managed Allocation Fund
                 -----------------------------------------------

     Please be further  advised that the Trust desires to retain the Underwriter
to sell and  distribute  shares of the New Fund and to render other  services to
the New Fund as provided in the Underwriting Agreement.

     Please  state below  whether  you are  willing to render  such  services as
provided in the Underwriting Agreement.

                                            USAA MUTUAL FUNDS TRUST



Attest: _________________________           By:  _____________________________
        Mark S. Howard                           Christopher W. Claus
        Secretary                                President

Date:  As of February 1, 2010


     We are  willing  to  render  services  to the New Fund as set  forth in the
Underwriting Agreement.

                                            USAA INVESTMENT MANAGEMENT
                                            COMPANY



Attest: _________________________           By:  ______________________________
        Christopher P. Laia                      Daniel S. McNamara
        Assistant Secretary                      President


Dated:  As of February 1, 2010