EXHIBIT 13(d)(i)






                                                     December 10, 1991





The Depository Trust Company
55 Water Street
New York, New York 10041

Attention:  General Counsel's Office

         Re:    Van Kampen Merritt Municipal Trust Auction
                Preferred Shares of Beneficial Interest ("APS")

Gentlemen:

         The purpose of this letter is to set forth certain matters relating to
the issuance and sale by Van Kampen Merritt Municipal Trust (the "Fund") of 1500
shares of each series of its preferred shares of beneficial interest, par value
$.01 per share, liquidation preference $50,000 per share, designated as Auction
Preferred Shares, Series A ("APS Series A"), Auction Preferred Shares, Series B
("APS Series B"), Auction Preferred shares, series C ("APS Series C"), and
Auction Preferred Shares, Series D ("APS Series D") (collectively, the APS
Series A, APS Series B, APS Series C and APS Series D are referred to herein as
the "APS"), pursuant to the Fund's Declaration of Trust (as defined below).
Pursuant to the auction agency agreement, dated as of December 10, 1991 (the
"Auction Agency Agreement"), between the Fund and Bankers Trust Company
("Bankers Trust"), Bankers Trust will act as the auction agent, transfer agent,
registrar and dividend and redemption price disbursing agent and agent for
certain notifications for the Fund in connection with the shares of each series
of APS (hereinafter referred to, when acting in any such capacity, as the
"Auction Agent").

         Pursuant to an underwriting agreement, dated December 5, 1991 ("AB
Underwriting Agreement"), among Goldman, Sachs & Co., Smith Barney, Harris Upham
& Co., PaineWebber Incorporated and Prudential Securities Incorporated (the
"Underwriters"), the Fund and Van Kampen Merritt Investment Advisory Corp. (the
"Adviser"), the Underwriters have agreed to purchase from the Fund, and the Fund
has agreed to issue and sell to the Underwriters, the shares of each of APS
Series A and APS Series B. Pursuant to a separate underwriting agreement, dated
December 5, 1991 ("CD Underwriting Agreement"), among the Underwriters, the Fund
and the Adviser, the Underwriters have agreed to purchase from the Fund, and the
Fund has agreed to issue and sell to the Underwriters, the shares of each of APS
Series C and APS Series D.




The Depository Trust Company
December 10, 1991
Page 2

Pursuant to the requirements of the Securities Act of 1933, as amended, the Fund
has filed with the Securities and Exchange Commission a Registration Statement
on Form N-2 and a prospectus contained therein (the "Prospectus") concerning the
issuance of the APS, which includes, among other things, a description of the
role of The Depository Trust Company ("DTC") with respect to such APS. Attached
hereto is a copy of the Prospectus.

         Capitalized terms not otherwise defined herein shall have the
respective meanings set forth in the Declaration of Trust (as defined below), a
copy of which is attached hereto, unless the context otherwise requires.

         To induce DTC to accept the APS as eligible for deposit at DTC and to
act in accordance with its rules with respect to the APS, the Fund and the
Auction Agent agree with DTC as follows:

                  1. The Fund shall cause the Underwriters to deliver at the
         closings with respect to the AB Underwriting Agreement and the CD
         Underwriting Agreement, each of which is scheduled for December 10,
         1991, for deposit with DTC one share certificate with respect to each
         series of APS (each an "APS Certificate"), which certificate will
         represent the total number of shares of each respective series of APS
         issued and registered in the name of DTC's nominee, Cede & Co.
         ("Cede"), and each such APS Certificate shall remain in DTC's custody
         as provided herein.

                  2. The Fund's Declaration of Trust, as amended, including the
         Certificate of Vote (sometimes referred to herein together with the
         Fund's Declaration of Trust as the "Declaration of Trust") establishing
         the rights and preferences of the shares of each series of APS,
         provides for the solicitation of consents from and voting by Holders of
         the shares of each series of APS under certain circumstances. The Fund
         shall establish a record date for such purposes and give DTC notice of
         such record date not less than 15 calendar days in advance of such
         record date to the extent possible.

                  3. If fewer than all of the shares of any series of APS are to
         be redeemed pursuant to Part I, Section 4 of the Certificate of Vote,
         the number of shares of such series of APS to be redeemed shall be
         determined by the Board of Trustees of the Fund and the Fund shall
         notify the Auction Agent and DTC by 1:00 p.m., New York City time, (A)
         in the case of an optional redemption at least 30 days prior to the
         earliest date on which such redemption shall occur and (B) in the case
         of a mandatory redemption, if the Fund shall have received the relief
         from the Securities and Exchange Commission described in the Prospectus
         with respect to mandatory redemptions, on the second Business Day
         preceding the redemption date established by the Board of Trustees and
         specified in such notice. By the close of business on the day on which
         the Auction Agent receives a Notice of Redemption from the Fund, the
         Auction Agent will give telephonic notice to



The Depository Trust Company
December 10, 1991
Page 3

         DTC, and the Auction Agent shall give DTC a hand delivered copy of such
         notice which will be marked "TIME CRITICAL" and shall include a copy
         addressed to Vice President, Reorganization Department (which call
         notice shall include the aggregate number of shares of such series of
         APS to be redeemed). Unless certificates representing the shares of
         such series of APS are held by Holders other than DTC or its nominee,
         DTC, upon receipt of a Notice of Redemption from the Auction Agent,
         will determine by lot the number of shares of such series of APS to be
         redeemed from the account of each Agent Member. DTC shall use its best
         efforts to complete such lottery and notify the Auction Agent of the
         results of such lottery by 10:00 a.m., New York City time, on the
         Business Day following the date on which DTC receives the call notice
         from the Auction Agent. DTC shall notify the Auction Agent by such time
         of each Agent Member that has credited to its DTC account shares of
         such series of APS that are selected for redemption by DTC and shall,
         using its best efforts, provide the Auction Agent with the names of the
         persons or departments at each such Agent Member to be contacted
         regarding such redemption. The Auction Agent will in turn determine by
         lot the number of shares of such series of APS to be redeemed from the
         accounts of the Existing Holders of shares of such series of APS whose
         Agent Members have been selected in sufficient time to enable the
         Auction Agent to notify the Broker-Dealer and such Existing Holders as
         provided in the Auction Agency Agreement.

                  4. The Declaration of Trust provides that the dividend rate
         for the shares of each series of APS may vary from time to time based
         upon the results of the implementation of the Auction Procedures set
         forth in Part II of the Certificate of Vote. The Auction Agent shall
         telecopy notice to Manager, Announcements, Dividends Department, The
         Depository Trust Company, at (212) 709-1264, of the Applicable Rate and
         the Dividend Payment Date with respect to the shares of each series of
         APS (the "Dividend Rate Notices") no later than the day following each
         Auction after implementation of such procedures and shall verify
         receipt by DTC of such notice by contacting the Supervisor,
         Announcements, Dividends Department, The Depository Trust Company, at
         (212) 709-1270. The Auction Agent shall make available, by telecopy,
         facsimile or other similar means, to Interactive Data Services, Inc.,
         or any other announcement service to which DTC may subscribe, the
         Applicable Rate and the Dividend Payment Date on each Auction Date
         after implementation of such procedures.

                  5. The Prospectus indicates that each purchaser of shares of
         any series of APS or its Broker-Dealer must sign a Master Purchaser's
         Letter which contains provisions restricting transfer of such APS. The
         Fund and the Auction Agent acknowledge that so long as Cede is the sole
         record owner of shares of any series of APS, it shall be entitled to
         all voting rights applicable to such APS and to receive the full amount
         of all dividends, liquidation proceeds and redemption proceeds payable
         with respect to such APS. The Fund and the Auction Agent acknowledge
         that DTC shall treat any Agent Member having shares of any series




The Depository Trust Company
December 10, 1991
Page 4

         of APS credited to its DTC account as entitled to the full benefits of
         ownership of such APS even if the crediting of shares of such APS to
         the DTC accounts of such Agent Member results from transfers or
         failures to transfer in violation of the provisions of the Master
         Purchaser's Letter. Without limiting the generality of the preceding
         sentence, the Fund and the Auction Agent acknowledge that DTC shall
         treat any Agent Member having shares of any series of APS credited to
         its DTC account as entitled to receive dividends, distributions and
         voting rights, if any, in respect of such APS and, subject to section
         11 hereof, to receive certificates evidencing such APS if such
         certificates are to be issued in accordance with the Fund's Declaration
         of Trust. (The treatment by DTC of the effects of the crediting by it
         of shares of such series of APS to the accounts of Agent Members
         described in the preceding two sentences shall not affect the rights of
         the Fund, participants in Auctions relating to shares of such series of
         APS or purchasers, sellers or Holders of shares of such series of APS
         against any Agent Member.) DTC shall have no responsibility to
         ascertain that any transfer of shares of any series of APS is made in
         accordance with the provisions of the Master Purchaser's Letter.

                  6. All notices and payment advices sent to DTC shall contain
         the CUSIP number set forth in the respective APS Certificate.

                  7. Notices to DTC by facsimile transmission shall be sent to
         (212) 709-1093 or (212) 709-1094. Notices to DTC by any other means
         shall be sent to:

                  Manager, Reorganization Department
                  Reorganization Window
                  The Depository Trust Company
                  7 Hanover Square, 23rd Floor
                  New York, New York 10004

                  8. Dividend payments shall be received by Cede, as nominee of
         DTC, or its registered assigns in same-day funds on each payment date
         (or the equivalent in accordance with existing arrangements between the
         Fund or the Auction Agent and DTC). Such payments shall be made payable
         to the order of "Cede & Co." Absent any other existing arrangements
         such payments shall be addressed as follows:

                  Manager, Cash Receipts, Dividends
                  The Depository Trust Company
                  7 Hanover Square, 24th Floor
                  New York, New York 10004

                  9. Redemption payments shall be made in same-day funds by the
         Auction Agent in the manner set forth in the SDFS Paying Agent
         Operating Procedures (a copy of which previously has been furnished to
         the Auction Agent).




The Depository Trust Company
December 10, 1991
Page 5

                  10. DTC may direct the Auction Agent to use any other
         telephone number for facsimile transmission, address or department of
         DTC as the number, address or department to which payments of
         dividends, redemption proceeds or notices may be sent.

                  11. In the event of a partial redemption necessitating a
         reduction in the number of outstanding shares of any series of APS,
         DTC, in its discretion, (a) may request the Fund to direct the Auction
         Agent to issue and authenticate a new APS Certificate with respect to
         the shares of the respective series of APS in exchange for surrender of
         the old APS Certificate with respect to such series or (b) shall make
         an appropriate notation on the APS Certificate with respect to such
         series indicating the date and amounts of such reduction in the
         outstanding shares of such series of APS, except in the case of a final
         redemption of shares of such series of APS in which case the APS
         Certificate with respect to such series must be surrendered to the
         Auction Agent prior to payment.

                  12. In the event that beneficial owners of shares of any
         series of APS shall be able to obtain certified shares, the Auction
         Agent may notify DTC of the availability of certificates representing
         the ownership of shares of such series of APS. In such event, the
         Auction Agent will issue, transfer and exchange APS Certificates with
         respect to such series as required by DTC and others in appropriate
         amounts.

                  13. Whenever DTC requests the Fund and the Auction Agent to do
         so, the Auction Agent and the Fund will cooperate with DTC in taking
         appropriate action to make available one or more separate certificates
         evidencing shares of any series of APS to any Agent Member having
         shares of such series of APS credited to its DTC account.

                  14. DTC may determine to discontinue providing its services as
         securities depository with respect to shares of any series of APS at
         any time by giving 90 days written notice to the Fund and the Auction
         Agent (at which time DTC will confirm with the Auction Agent the
         aggregate amount of outstanding shares of such series of APS). Under
         such circumstances, at DTC's request the Fund or the Auction Agent will
         cooperate with DTC in taking appropriate action to make available one
         or more separate certificates evidencing shares of such series of APS
         to any Agent Member having shares of such series of APS credited to its
         DTC account.

                  15. The Fund hereby authorizes DTC to provide to the Auction
         Agent position listings of its Agent Members with respect to shares of
         any series of APS from time to time at the request of the Auction
         Agent, and also authorizes DTC in the event of a partial redemption of
         shares of any series of APS to provide the Auction Agent, upon request,
         with the names of those Agent Members whose position in such APS has
         been selected for redemption by DTC. DTC agrees to




The Depository Trust Company
December 10, 1991
Page 6


         use its best efforts to notify the Auction Agent of those Agent Members
         whose position in shares of such series of APS has been selected for
         redemption by DTC and to provide the Auction Agent with the names of
         the person or department at such Agent Members to contact regarding
         such redemption. The Fund authorizes the Auction Agent to provide DTC
         with such signatures, examples of signatures and authorizations to act
         as may be deemed necessary to DTC to permit DTC to discharge its
         obligations to its Agent Members and appropriate regulatory
         authorities.

                  This authorization, unless revoked by the Fund, shall continue
         with respect to shares of each series of APS while shares of each such
         series of APS are on deposit at DTC, until and unless the Auction Agent
         shall no longer be acting. In such event, the Fund shall provide DTC
         with similar evidence of authorization of any successor thereto to so
         act.

                  16. (a) The Prospectus indicates that the Fund may at any time
         designate a Special Dividend Period with respect to shares of any
         series of APS prior to the commencement of such Special Dividend
         Period. In the event of such designation, the Fund will notify DTC in
         writing at least seven days prior to the Auction Date relating to such
         Special Dividend Period of all details concerning the Special Dividend
         Period. If the new dividend for a Special Dividend Period is to be
         payable on more than one Dividend Payment Date, such notice shall state
         all such Dividend Payment Dates and payment factors associated with
         such Dividend Period. The Auction Agent shall also notify DTC of each
         upcoming Dividend Payment Date on the business day after the preceding
         Dividend Payment Date.

                      (b) The Fund will notify DTC, at least 10 business days
                  prior to the payment date for an Additional Dividend (as
                  defined in the Prospectus) in respect of shares of any series
                  of APS, of (i) the record date for Holders of shares of such
                  series of APS entitled to receive Additional Dividends, (ii)
                  the amount of Additional Dividends payable on a per share
                  basis to such Holders and (ii) the CUSIP number set forth on
                  the share certificate representing shares of such series of
                  APS.






The Depository Trust Company
December 10, 1991
Page 7

         If you are in agreement with the terms of this Letter Agreement, please
execute the Letter Agreement in the space provided below.

                                        Very truly yours,

                                        VAN KAMPEN MERRITT
                                        MUNICIPAL TRUST


                                        By:/s Dennis J. McDonnell
                                           -----------------------------------
                                        Name: Dennis J. McDonnell
                                        Title: President


                                        BANKERS TRUST COMPANY
                                           as auction agent


                                        By:/s/ Anne Hartnett
                                           -----------------------------------
                                        Name: Anne Hartnett
                                        Title: Assistant Treasurer

Accepted as of the date first written above

THE DEPOSITORY TRUST COMPANY


By: /s/ Richard B. Nesson
    ---------------------------------
Name:   Richard B. Nesson
Title:

(enclosures)

cc:      Goldman, Sachs & Co.
         Smith Barney, Harris Upham & Co.
         PaineWebber Incorporated
         Prudential Securities Incorporated