MORGAN STANLEY DEAN WITTER US GOVERNMENT MONEY MARKET TRUST
485APOS, 1999-01-27
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<PAGE>
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 27, 1999
 
                                                     REGISTRATION NOS.:  2-74980
                                                                        811-3326
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                              --------------------
 
                                   FORM N-1A
                             REGISTRATION STATEMENT
                        UNDER THE SECURITIES ACT OF 1933                     /X/
                          PRE-EFFECTIVE AMENDMENT NO.                        / /
                       POST-EFFECTIVE AMENDMENT NO. 19                       /X/
                                     AND/OR
              REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
                                  ACT OF 1940                                /X/
                               AMENDMENT NO. 20                              /X/
 
                            ------------------------
 
         MORGAN STANLEY DEAN WITTER U.S. GOVERNMENT MONEY MARKET TRUST
           (FORMERLY DEAN WITTER U.S. GOVERNMENT MONEY MARKET TRUST)
                        (A MASSACHUSETTS BUSINESS TRUST)
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)
 
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)
 
       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (212) 392-1600
 
                                BARRY FINK, ESQ.
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (NAME AND ADDRESS OF AGENT FOR SERVICE)
                         ------------------------------
 
                                    COPY TO:
                            DAVID M. BUTOWSKY, ESQ.
                             GORDON ALTMAN BUTOWSKY
                             WEITZEN SHALOV & WEIN
                              114 WEST 47TH STREET
                            NEW YORK, NEW YORK 10036
                              --------------------
 
                 APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
 
 As soon as practicable after this Post-Effective Amendment becomes effective.
 
 IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE BOX)
 
        ___ immediately upon filing pursuant to paragraph (b)
 
        ___ on (date) pursuant to paragraph (b)
 
        ___ 60 days after filing pursuant to paragraph (a)
 
        _X_ on March 29, 1999 pursuant to paragraph (a) of rule 485.
 
                            AMENDING THE PROSPECTUS
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
         MORGAN STANLEY DEAN WITTER U.S. GOVERNMENT MONEY MARKET TRUST
 
                             CROSS-REFERENCE SHEET
 
                                   FORM N-1A
 
<TABLE>
<CAPTION>
ITEM                                               CAPTION
- ------------------------------------------------------------------------------------------
<S>                 <C>
PART A                                            PROSPECTUS
 1.  ............... Cover Page; Back Cover
 
 2.  ............... Investment Objectives; Principal Investment Strategies; Principal
                     Risks; Past Performance
 
 3.  ............... Fees and Expenses
 
 4.  ............... Investment Objectives; Principal Investment Strategies; Principal
                     Risks
 
 5.  ............... Not Applicable
 
 6.  ............... Fund Management
 
 7.  ............... Pricing Fund Shares; How to Buy Shares; How to Exchange Shares; How to
                     Sell Shares; Distributions; Tax Consequences
 
 8.  ............... Plan of Distribution
 
 9.  ............... Financial Highlights
</TABLE>
 
<TABLE>
<S>                   <C>
PART B                         STATEMENT OF ADDITIONAL INFORMATION
</TABLE>
 
    Information required to be included in Part B is set forth under the
appropriate caption in Part B of this Registration Statement.
 
<TABLE>
<S>                   <C>
PART C
</TABLE>
 
    Information required to be included in Part C is set forth under the
appropriate item, so numbered, in Part C of this Registration Statement.
<PAGE>
                                                     PROSPECTUS - MARCH 29, 1999
 
Morgan Stanley Dean Witter
                                              U.S. GOVERNMENT MONEY MARKET TRUST
 
                                 [COVER PHOTO]
 
                                       A MONEY MARKET FUND THAT SEEKS TO PROVIDE
                        SECURITY OF PRINCIPAL, HIGH CURRENT INCOME AND LIQUIDITY
 
The Securities and Exchange Commission has not approved these securities or
passed upon the adequacy of this PROSPECTUS. Any representation to the contrary
is a criminal offense.
<PAGE>
CONTENTS
 
<TABLE>
<S>                       <C>                                                     <C>
The Fund                  Investment Objectives.................................                   1
                          Principal Investment Strategies.......................                   1
                          Principal Risks.......................................                   2
                          Past Performance......................................                   3
                          Fees and Expenses.....................................                   4
                          Fund Management.......................................                   5
 
Shareholder Information   Pricing Fund Shares...................................                   6
                          How to Buy Shares.....................................                   6
                          How to Exchange Shares................................                   9
                          How to Sell Shares....................................                  12
                          Distributions.........................................                  15
                          Tax Consequences......................................                  16
                          Plan of Distribution..................................                  16
Financial Highlights      ......................................................                  17
 
Financial Statements --
January, 1999             ......................................................
 
Our Family of Funds       ......................................................   Inside Back Cover
 
                          THIS PROSPECTUS CONTAINS IMPORTANT INFORMATION ABOUT THE FUND. PLEASE READ
                          IT CAREFULLY AND KEEP IT FOR FUTURE REFERENCE.
</TABLE>
 
            FUND CATEGORY
            ----------------------------
       / /  Growth
       / /  Growth and Income
       / /  Income
       /X/  MONEY MARKET
<PAGE>
(Sidebar)
MONEY MARKET
A mutual fund having the goal to select securities to provide current income
while seeking to maintain a stable share price of $1.00.
YIELD
The Fund's yield reflects the actual income the Fund pays to you expressed as a
percentage of the Fund's share price. Because the Fund's income from its
portfolio securities will fluctuate, the income it in turn distributes to you
and the Fund's yield will vary.
(End Sidebar)
 
THE FUND
 
ICON                  INVESTMENT OBJECTIVES
- --------------------------------------------------------------------------------
                      Morgan Stanley Dean Witter U.S. Government Money Market
                      Trust (the "Fund") is a money market fund that seeks to
                      provide security of principal, high current income and
                      liquidity. There is no guarantee that the Fund will
                      achieve these objectives.
 
ICON                  PRINCIPAL INVESTMENT STRATEGIES
- --------------------------------------------------------------------------------
                      The Fund will invest in high quality, short-term U.S.
                      Government securities. The Fund's "Investment Manager,"
                      Morgan Stanley Dean Witter Advisors Inc., seeks to
                      maintain the Fund's share price at $1.00. The share price
                      remaining stable at $1.00 means that the Fund would
                      preserve the principal value of your investment.
 
                      The U.S. Government securities that the Fund may purchase
                      include:
                       - U.S. Treasury bills, notes and bonds, all of which are
                         direct obligations of the U.S. Government.
                       - Securities issued by agencies and instrumentalities of
                         the U.S. Government which are backed by the full faith
                         and credit of the United States. Among the agencies and
                         instrumentalities issuing these obligations are the
                         Government National Mortgage Association and the
                         Federal Housing Administration.
                       - Securities issued by agencies and instrumentalities
                         which are not backed by the full faith and credit of
                         the United States, but whose issuing agency or
                         instrumentality has the right to borrow, to meet its
                         obligations, from U.S. Treasury. Among these agencies
                         and instrumentalities are the Federal National Mortgage
                         Association, the Federal Home Loan Mortgage Corporation
                         and the Federal Home Loan Banks.
                       - Securities issued by agencies and instrumentalities
                         which are backed solely by the credit of the issuing
                         agency or instrumentality. Among these agencies and
                         instrumentalities is the Federal Farm Credit System.
 
                      The Fund also may invest up to 10% of its assets in FDIC
                      insured certificates of deposit of banks and saving and
                      loan institutions.
 
                      The Fund's policies discussed above are fundamental. These
                      policies may not be changed without shareholder approval.
                      In addition to the fundamental investment policies, the
                      Fund may invest in repurchase agreements, which may be
                      viewed as a type of secured lending by the Fund.
 
                                                                               1
<PAGE>
THE FUND, CONTINUED
 
ICON                  PRINCIPAL RISKS
- --------------------------------------------------------------------------------
 
                       CREDIT AND INTEREST RATE RISKS. A principal risk of
                       investing in the Fund is associated with its U.S.
                      Government securities investments, which are subject to
                      two types of risks: credit risk and interest rate risk.
                      Credit risk refers to the possibility that the issuer of a
                      security will be unable to make interest payments and
                      repay the principal on its debt. Interest rate risk,
                      another risk of debt securities, refers to fluctuations in
                      the value of a fixed-income security resulting from
                      changes in the general level of interest rates.
 
                      Credit risk is minimal with respect to the Fund's U.S.
                      Government investments. Repurchase agreements involve a
                      greater degree of credit risk. The Investment Manager,
                      however, actively manages the Fund's assets to reduce the
                      risk of losing any principal investment as a result of
                      credit or interest rate risks. In addition, federal
                      regulations require money market funds, such as the Fund,
                      to invest only in debt obligations of high quality and
                      short maturities.
 
                      An investment in the Fund is not a deposit of a bank and
                      is not insured or guaranteed by the FDIC or any other
                      government agency. Although the Fund seeks to preserve the
                      value of your investment at $1.00 per share, if it is
                      unable to do so, it is possible to lose money by investing
                      in the Fund.
 
                       YEAR 2000. The Fund could be adversely affected if the
                       computer systems necessary for the efficient operation of
                      the Investment Manager, the Fund's other service providers
                      and the markets and individual and governmental issuers in
                      which the Fund invests do not properly process and
                      calculate date-related information from and after January
                      1, 2000. While year 2000-related computer problems could
                      have a negative effect on the Fund, the Investment Manager
                      and affiliates are working hard to avoid any problems and
                      to obtain assurances from their service providers that
                      they are taking similar steps.
 
2
<PAGE>
(Sidebar)
ANNUAL TOTAL RETURN
This chart shows how the performance of the Fund's shares has varied from year
to year over a 10-year period.
(End Sidebar)
 
ICON                  PAST PERFORMANCE
- --------------------------------------------------------------------------------
                      The bar chart and table below provide some indication of
                      the Fund's performance history. The Fund's past
                      performance does not indicate how the Fund will perform in
                      the future.
 
                      ANNUAL TOTAL RETURNS - CALENDAR YEARS
 
                      EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED
                      GRAPHIC
 
<TABLE>
<S>        <C>
1989           8.59%
1990           7.35%
1991           5.37%
1992           3.03%
1993           2.29%
1994           3.22%
1995           5.02%
1996           4.47%
1997           4.63%
1998           4.71%
</TABLE>
 
                      During the periods shown in the bar chart, the highest
                      return for a calendar quarter was 2.22% (quarter ended
                      June 30, 1989) and the lowest return for a calendar
                      quarter was 0.55% (quarter ended June 30, 1993).
 
                                                                               3
<PAGE>
THE FUND, CONTINUED
 
(Sidebar)
AVERAGE ANNUAL
TOTAL RETURNS
This table compares the Fund's average annual returns with those of a broad
measure of market performance over time.
ANNUAL FUND
OPERATING EXPENSES
These expenses are deducted from the Fund's assets and are based on expenses
paid for the fiscal year ended January 31, 1999.
(End Sidebar)
 
<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS
(FOR THE PERIODS ENDED THE 1998 CALENDAR YEAR)
- -------------------------------------------------------------------------------
                                     PAST 1 YEAR   PAST 5 YEARS   PAST 10 YEARS
<S>                                  <C>           <C>            <C>
- -------------------------------------------------------------------------------
 U.S. Government Money Market           4.71%         4.41%           4.85%
- -------------------------------------------------------------------------------
 IBC Financial Data U.S. Government
 & Agencies Average(1)                    %             %               %
- -------------------------------------------------------------------------------
</TABLE>
 
1    [IBC Financial Data U.S. Government & Agencies Average Index description]
 
                      For the Fund's most recent 7-day annualized yield, you may
                      call (800) 869-NEWS.
 
ICON                  FEES AND EXPENSES
- --------------------------------------------------------------------------------
                      The table below briefly describes the Fund's fees and
                      expenses. The Fund does not charge account or exchange
                      fees.
 
<TABLE>
<S>                                                           <C>
 SHAREHOLDER FEES
- -----------------------------------------------------------------------
 Maximum sales charge (load) imposed on purchases (as a
 percentage of offering price)                                  None
- -----------------------------------------------------------------------
 Maximum deferred sales charge (load) (as a percentage based
 on the lesser of the offering price or net asset value at
 redemption)                                                    None
- -----------------------------------------------------------------------
 ANNUAL FUND OPERATING
 EXPENSES
- -----------------------------------------------------------------------
 Management Fee                                                 0.  %
- -----------------------------------------------------------------------
 Distribution and service (12b-1) fees                          0.  %
- -----------------------------------------------------------------------
 Other expenses                                                   %
- -----------------------------------------------------------------------
 Total annual Fund operating expenses                             %
- -----------------------------------------------------------------------
</TABLE>
 
4
<PAGE>
(Sidebar)
MORGAN STANLEY DEAN WITTER ADVISORS INC.
The Investment Manager is widely recognized as a leader in the mutual fund
industry and together with its wholly-owned subsidiary, Morgan Stanley Dean
Witter Services Company Inc., has more than $   billion in assets under
management or administration as of         , 1999.
(End Sidebar)
 
                       EXAMPLE
                      This example shows what expenses you could pay over time.
                      The example assumes that you invest $10,000 in the Fund,
                      your investment has a 5% return each year, and the Fund's
                      operating expenses remain the same. Although your actual
                      costs may be higher or lower, the tables below show your
                      costs at the end of each period based on these assumptions
                      depending upon whether or not you sell your shares at the
                      end of each period.
 
<TABLE>
<CAPTION>
                 1 YEAR    3 YEARS    5 YEARS    10 YEARS
<S>              <C>       <C>        <C>        <C>
- ----------------------------------------------------------
                   $         $          $           $
- ----------------------------------------------------------
</TABLE>
 
ICON                  FUND MANAGEMENT
- --------------------------------------------------------------------------------
                      The Fund has retained the Investment Manager -- Morgan
                      Stanley Dean Witter Advisors Inc. -- to provide
                      administrative services, manage its business affairs and
                      invest its assets, including the placing of orders for the
                      purchase and sale of portfolio securities. The Investment
                      Manager is a wholly-owned subsidiary of Morgan Stanley
                      Dean Witter & Co., a preeminent global financial services
                      firm that maintains leading market positions in each of
                      its three primary businesses: securities, asset management
                      and credit services. Its main business office is located
                      at Two World Trade Center, New York, NY 10048.
 
                      The Fund pays the Investment Manager a monthly management
                      fee as full compensation for the services and facilities
                      furnished to the Fund, and for Fund expenses assumed by
                      the Investment Manager. The fee is based on the Fund's
                      average daily net assets. For the fiscal year ended
                      January 31, 1999 the Fund accrued total compensation to
                      the Investment Manager amounting to 0. % of the Fund's
                      average daily net assets.
 
                                                                               5
<PAGE>
SHAREHOLDER INFORMATION
 
                      PRICING FUND SHARES
- --------------------------------------------------------------------------------
                      The price of Fund shares, called "net asset value," is
                      based on the amortized cost of the Fund's portfolio
                      securities. The amortized cost valuation method involves
                      valuing a debt obligation in reference to its cost, rather
                      than market forces.
 
                      The net asset value per share of the Fund is determined
                      once daily at 4:00 p.m. Eastern time, on each day that the
                      New York Stock Exchange is open (or, on days when the New
                      York Stock Exchange closes prior to 4:00 p.m., at such
                      earlier time). Shares will not be priced on days that the
                      New York Stock Exchange is closed.
(Sidebar)
CONTACTING A FINANCIAL ADVISOR
If you are new to the Morgan Stanley Dean Witter family of Funds and would like
to contact a Financial Advisor, call (800) 869-NEWS for the telephone number of
the Morgan Stanley Dean Witter office nearest you.
 
You may also access our office locator on our Internet site at:
www.deanwitter.com/funds.
(End Sidebar)
 
                      HOW TO BUY SHARES
- --------------------------------------------------------------------------------
                      You may open a new account to buy Fund shares or buy
                      additional Fund shares for an existing account in several
                      ways. When you buy Fund shares, the shares are purchased
                      at the next share price calculated after we receive your
                      investment in proper form and accompanied by federal or
                      other immediately available funds. You begin earning
                      dividends the business day after the shares are purchased.
 
6
<PAGE>
(Sidebar)
EASYINVEST-SM-
A purchase plan that allows you to transfer money automatically from your
checking or savings account on a semi-monthly, monthly or quarterly basis.
Contact your Morgan Stanley Dean Witter Financial Advisor for further
information about this service.
(End Sidebar)
 
<TABLE>
<CAPTION>
MINIMUM INVESTMENT AMOUNTS*
- ----------------------------------------------------------------------------------------------------
                                                                              MINIMUM INVESTMENT
                                                                          --------------------------
 INVESTMENT OPTIONS                                                         INITIAL*     ADDITIONAL
<S>                                  <C>                                  <C>            <C>
- ----------------------------------------------------------------------------------------------------
 Regular accounts:                                                        $       1,000      $ 50
- ----------------------------------------------------------------------------------------------------
 Individual Retirement Accounts:     Regular IRAs                         $       1,000      $ 50
                                     Educational IRAs                     $         500      $ 50
- ----------------------------------------------------------------------------------------------------
 EASYINVEST -SM-                     (Automatically from your checking
                                     or savings account or Money Market
                                     Fund)                                not available      $100
- ----------------------------------------------------------------------------------------------------
</TABLE>
 
*    The Fund will waive the minimum initial investment for the automatic
     reinvestment of distributions from certain unit investment trusts.
 
                       ADVISORY, ADMINISTRATIVE OR BROKERAGE PROGRAMS. There is
                       no minimum investment amount if you purchase Fund shares
                      through: (1) the Investment Manager's mutual fund asset
                      allocation plan, or (2) a program, approved by the Fund's
                      distributor, in which you pay an asset-based fee for
                      advisory, administrative and/or brokerage services.
 
<TABLE>
<CAPTION>
 INVESTMENT
 OPTIONS            PROCEDURES
<S>                 <C>
- --------------------------------------------------------------------------------
 Contact Your       NEW ACCOUNTS AND SUBSEQUENT INVESTMENTS--
 Financial Advisor  You may buy Fund shares by contacting your Morgan Stanley
                    Dean Witter Financial Advisor or other authorized financial
                    representative. Your Financial Advisor will assist you,
                    step-by-step, with the procedures to invest in the Fund.
- --------------------------------------------------------------------------------
 By Mail            NEW ACCOUNTS--
                    To open a new account to buy Fund shares:
                    - Complete and sign the attached Application.
                    - Make out a check for the investment amount to: Morgan
                      Stanley Dean Witter U.S. Government Money Market Trust.
                    - Mail the Application and check to Morgan Stanley Dean
                      Witter Trust FSB at P.O. Box 1040, Jersey City, New Jersey
                      07303.
                    ------------------------------------------------------------
</TABLE>
 
                                                                               7
<PAGE>
SHAREHOLDER INFORMATION, CONTINUED
 
<TABLE>
<CAPTION>
 INVESTMENT
 OPTIONS            PROCEDURES
- --------------------------------------------------------------------------------
<S>                 <C>
                    SUBSEQUENT INVESTMENTS--
                    To buy additional shares for an existing Fund account:
                    - Write a "letter of instruction" to the Fund specifying the
                      name(s) on the account, the account number and the social
                      security or tax identification number, and the additional
                      investment amount. The letter must be signed by the
                      account owner(s).
                    - Make out a check for the investment amount to: Morgan
                      Stanley Dean Witter U.S. Government Money Market Trust.
                    - Mail the letter and check to Morgan Stanley Dean Witter
                      Trust FSB at the same address as for new accounts.
- --------------------------------------------------------------------------------
 By wire            NEW ACCOUNTS--
                    To open a new account to buy Fund shares:
                    - Mail the attached Application, completed and signed, to
                      Morgan Stanley Dean Witter Trust FSB at P.O. Box 1040,
                      Jersey City, New Jersey 07303.
                    - Before sending instructions by wire, call us at (800)
                      869-NEWS advising us of your purchase and to confirm we
                      have received your Application.
                    - Wire the instructions specifying the name of the Fund and
                      your account number, along with the additional investment
                      amount, to The Bank of New York, for credit to the account
                      of "Morgan Stanley Dean Witter Trust FSB, Harborside
                      Financial Center, Plaza Two, Jersey City, New Jersey
                      07303, Account No. 8900188413."
                    (When you buy Fund shares, wire purchases received prior to
                    12:00 noon Eastern time are normally effective that day and
                    wire purchases received after 12:00 noon are normally
                    effective the next business day.)
                    ------------------------------------------------------------
                    SUBSEQUENT INVESTMENTS--
                    To buy additional shares for an existing Fund account:
                    - Before sending instructions by wire, call us at (800)
                      869-NEWS advising us of your purchase.
                    - Wire the instructions specifying the name of the Fund and
                      your account number, along with the investment amount, to
                      The Bank of New York, for credit to the account of Morgan
                      Stanley Dean Witter Trust FSB in the same manner as
                      opening an account.
                    (Also, when you buy additional Fund shares, wire purchases
                    received prior to 12:00 noon Eastern time are normally
                    effective that day and wire purchases received after 12:00
                    noon are normally effective the next business day.)
                    ------------------------------------------------------------
</TABLE>
 
8
<PAGE>
<TABLE>
<CAPTION>
 INVESTMENT
 OPTIONS            PROCEDURES
- --------------------------------------------------------------------------------
<S>                 <C>
 EASYINVEST -SM-    NEW ACCOUNTS--
 (Automatically     This program is not available to open a new Fund account or
 from your          a new account of another Money Market Fund.
 checking or
 savings account)
                    ------------------------------------------------------------
                    SUBSEQUENT INVESTMENTS--
                    EASYINVEST-SM- is a purchase plan that allows you to
                    transfer money automatically from your checking or savings
                    account to an existing Fund account on a semi-monthly,
                    monthly or quarterly basis. Contact your Morgan Stanley Dean
                    Witter Financial Advisor or other authorized financial
                    representative for further information about this service.
- --------------------------------------------------------------------------------
</TABLE>
 
                       ADDITIONAL PURCHASE INFORMATION. If you are a customer of
                       Dean Witter Reynolds or another authorized dealer of Fund
                      shares, you may upon request: (a) have the proceeds from
                      the sale of listed securities invested in Fund shares the
                      day after you receive the proceeds; and (b) pay for the
                      purchase of certain listed securities by automatic sale of
                      Fund shares that you own. In addition, if you are a
                      customer of Dean Witter Reynolds or another authorized
                      dealer of Fund shares, you may have cash balances in your
                      securities account (which do not exceed $5,000)
                      automatically invested in shares of the Fund on a weekly
                      basis.
 
                      We reserve the right to reject any order for the purchase
                      of Fund shares.
 
                      HOW TO EXCHANGE SHARES
- --------------------------------------------------------------------------------
                       PERMISSIBLE FUND EXCHANGES. You may only exchange shares
                       of the Fund for shares of other Morgan Stanley Dean
                      Witter Funds if the Fund shares were acquired in an
                      exchange of shares initially purchased in a Multi-Class
                      Fund or an FSC Fund (subject to a front-end sales charge).
                      In that case, the shares may be subsequently re-exchanged
                      for shares of the same Class of any Multi-Class Fund or
                      FSC Fund or for shares of another Money Market Fund,
                      No-Load Fund or Short-Term U.S. Treasury Trust. Of course,
                      if an exchange is not permitted, you may sell shares of
                      the Fund and buy another Fund's shares with the proceeds.
 
                      See the inside back cover of this PROSPECTUS for each
                      Morgan Stanley Dean Witter Fund's designation as a
                      Multi-Class Fund, FSC Fund, No-
 
                                                                               9
<PAGE>
SHAREHOLDER INFORMATION, CONTINUED
 
                      Load Fund or Money Market Fund. If a Morgan Stanley Dean
                      Witter Fund is not listed, consult the inside back cover
                      of that Fund's PROSPECTUS for its designation. For
                      purposes of exchanges, shares of FSC Funds are treated as
                      Class A shares of a Multi-Class Fund.
 
                      An exchange privilege account also may be maintained for
                      you if you acquired Fund shares in exchange for shares of
                      various TCW/DW Funds.
 
                      The current PROSPECTUS for each Fund describes its
                      investment objective(s), policies and investment minimums,
                      and should be read before investing.
 
                       EXCHANGE PROCEDURES. You can process an exchange by
                       contacting your Morgan Stanley Dean Witter Financial
                      Advisor or other authorized financial representative.
                      Otherwise, you must forward an exchange privilege
                      authorization form to the Fund's transfer agent -- Morgan
                      Stanley Dean Witter Trust FSB -- and then write the
                      transfer agent or call (800) 869-NEWS to place an exchange
                      order. You can obtain an exchange privilege authorization
                      form by contacting your Financial Advisor or other
                      authorized financial representative or by calling (800)
                      869-NEWS.
 
                      An exchange to any Morgan Stanley Dean Witter Fund (except
                      a Money Market Fund) is made on the basis of the next
                      calculated net asset values of the Funds involved after
                      the exchange instructions are accepted. When exchanging
                      into a Money Market Fund, the Fund's shares are sold at
                      their next calculated net asset value and the Money Market
                      Fund's shares are purchased at their net asset value on
                      the following business day.
 
                      The Fund may terminate or revise the exchange privilege
                      upon required notice. Certain services normally available
                      to shareholders of Money Market Funds, including the check
                      writing privilege, are not available for Money Market Fund
                      shares you acquire in an exchange.
 
                       TELEPHONE EXCHANGES. For your protection when calling
                       Morgan Stanley Dean Witter Trust FSB, we will employ
                      reasonable procedures to confirm that exchange
                      instructions communicated over the telephone
 
10
<PAGE>
                      are genuine. These procedures may include requiring
                      various forms of personal identification such as name,
                      mailing address, social security or other tax
                      identification number. Telephone instructions also may be
                      recorded.
 
                      Telephone instructions will be accepted if received by the
                      Fund's transfer agent between 9:00 a.m. and 4:00 p.m.
                      Eastern time, on any day the New York Stock Exchange is
                      open for business. During periods of drastic economic or
                      market changes, it is possible that the telephone exchange
                      procedures may be difficult to implement, although this
                      has not been the case with the Fund in the past.
 
                       MARGIN ACCOUNTS. If you have pledged your Fund shares in
                       a margin account, contact your Morgan Stanley Dean Witter
                      Financial Advisor or other authorized financial
                      representative regarding restrictions on the exchange of
                      such shares.
 
                       EXCHANGING SHARES OF ANOTHER FUND SUBJECT TO A CONTINGENT
                       DEFERRED SALES CHARGE ("CDSC"). There are special
                       considerations when you exchange shares subject to a CDSC
                      of another Morgan Stanley Dean Witter Fund for shares of
                      the Fund. When determining the length of time you held the
                      shares and the corresponding CDSC rate, any period
                      (starting at the end of the month) during which you held
                      shares of the Fund WILL NOT BE COUNTED. Thus, in effect
                      the "holding period" for purposes of calculating the CDSC
                      is frozen upon exchanging into the Fund. Nevertheless, if
                      shares subject to a CDSC are exchanged for shares of the
                      Fund, you will receive a credit when you sell the shares
                      equal to the distribution (12b-1) fees, if any, you paid
                      on those shares while in the Fund up to the amount of any
                      applicable CDSC. See the PROSPECTUS of the Fund that
                      charges the CDSC for more details.
 
                       FREQUENT EXCHANGES. A pattern of frequent exchanges may
                       result in the Fund limiting or prohibiting, at its
                      discretion, additional purchases and/ or exchanges. The
                      Fund will notify you in advance of limiting your exchange
                      privileges.
 
                      FOR FURTHER INFORMATION REGARDING EXCHANGE PRIVILEGES, YOU
                      SHOULD CONTACT YOUR MORGAN STANLEY DEAN WITTER FINANCIAL
                      ADVISOR OR CALL (800) 869-NEWS.
 
                                                                              11
<PAGE>
SHAREHOLDER INFORMATION, CONTINUED
 
(Sidebar)
SYSTEMATIC
WITHDRAWAL PLAN
This plan allows you to withdraw money automatically from your Fund account at
regular intervals. The service is available to shareholders whose investments in
all Morgan Stanley Dean Witter Funds total at least $10,000. Contact your Morgan
Stanley Dean Witter Financial Advisor for more details.
(End Sidebar)
 
                      HOW TO SELL SHARES
- --------------------------------------------------------------------------------
                      You can sell some or all of your Fund shares at any time.
                      Your shares will be sold at the next share price
                      calculated after we receive your order in proper form.
 
<TABLE>
<CAPTION>
 OPTIONS            PROCEDURES
<S>                 <C>
- --------------------------------------------------------------------------------
 Contact your       To sell your shares, simply call your Morgan Stanley Dean
 Financial Advisor  Witter Financial Advisor or other authorized financial
                    representative.
                    ------------------------------------------------------------
                    Payment will be sent to the address to which the account is
                    registered or deposited in your brokerage account.
- --------------------------------------------------------------------------------
 Check-writing      You may order a supply of blank checks by requesting them on
 Option             the investment application or by contacting your Morgan
                    Stanley Dean Witter Financial Advisor.
                    ------------------------------------------------------------
                    Checks may be written in any amount not less than $500. You
                    must sign checks exactly as their shares are registered. If
                    the account is a joint account, the check may contain one
                    signature unless the joint owners have specified on an
                    investment application that all owners are required to sign
                    checks.
                    ------------------------------------------------------------
                    Payment of check proceeds normally will be made on the next
                    business day after we receive your check in proper form.
                    Shares purchased by check (including a certified or bank
                    cashier's check) are not normally available to cover
                    redemption checks until fifteen days after Morgan Stanley
                    Dean Witter Trust FSB receives the check used for
                    investment. A check will not be honored in an amount
                    exceeding the value of the account at the time the check is
                    presented for payment.
- --------------------------------------------------------------------------------
 Systematic         If your investment in all of the Morgan Stanley Dean Witter
 Withdrawal Plan    Family of Funds has a total market value of at least
                    $10,000, you may elect to withdraw amounts of $25 or more,
                    or in any whole percentage of a Fund's balance (provided the
                    amount is at least $25), on a monthly, quarterly,
                    semi-annual or annual basis, from any Fund with a balance of
                    at least $1,000. Each time you add a Fund to the plan, you
                    must meet the plan requirements.
                    ------------------------------------------------------------
                    To sign up for the Systematic Withdrawal Plan, contact your
                    Morgan Stanley Dean Witter Financial Advisor or call (800)
                    869-NEWS. You may terminate or suspend your plan at any
                    time. Please remember that withdrawals from the plan are
                    sales of shares, not Fund "distributions," and ultimately
                    may exhaust your account balance. The Fund may terminate or
                    revise the plan at any time.
                    ------------------------------------------------------------
</TABLE>
 
12
<PAGE>
 
<TABLE>
<CAPTION>
 OPTIONS            PROCEDURES
<S>                 <C>
- --------------------------------------------------------------------------------
                    When you sell Fund shares through the Systematic Withdrawal
                    Plan, the shares may be subject to a contingent deferred
                    sales charge ("CDSC") if they were obtained in exchange for
                    shares subject to a CDSC of another Morgan Stanley Dean
                    Witter Fund. The CDSC, however, will be waived in an amount
                    up to 12% annually of the Fund's value, although Fund shares
                    with no CDSC will be sold first, followed by those with the
                    lowest CDSC. As such, the waiver benefit will be reduced by
                    the amount of your shares that are not subject to a CDSC.
                    See the PROSPECTUS of the Fund that charges the CDSC for
                    more details.
                    ------------------------------------------------------------
 By Letter          You may also sell your shares by writing a "letter of
                    instruction" that includes:
                    - your account number;
                    - the dollar amount or the number of shares you wish to
                    sell; and
                    - the signature of each owner as it appears on the account.
                    ------------------------------------------------------------
                    If you are requesting payment to anyone other than the
                    registered owner(s) or that payment be sent to any address
                    other than the address of the registered owner(s) or pre-
                    designated bank account, you will need a signature
                    guarantee. You can generally obtain a signature guarantee
                    from eligible guarantor acceptable to Morgan Stanley Dean
                    Witter Trust FSB. A notary public CANNOT provide a signature
                    guarantee. Additional documentation may be required for
                    shares held by a corporation, partnership, trustee or
                    executor.
                    ------------------------------------------------------------
                    Mail the letter to Morgan Stanley Dean Witter Trust FSB at
                    P.O. Box 983, Jersey City, NJ 07303.
                    ------------------------------------------------------------
                    A check will be mailed to the name(s) and address in which
                    the account is registered, or otherwise according to your
                    instructions.
- --------------------------------------------------------------------------------
 By Telephone or    You may also sell your shares by calling Morgan Stanley Dean
 Wire               Witter Trust FSB at (800) 869-NEWS or by sending wire
                    instructions to Morgan Stanley Dean Witter Trust FSB at
                    Telex No. 125076. A check will be mailed to the name(s) and
                    address in which the account is registered or, for amounts
                    of $1,000 or more, you may request a wire transfer to the
                    bank account designated in the application.
- --------------------------------------------------------------------------------
</TABLE>
 
                       PAYMENT FOR SOLD SHARES. After we receive your
                       instruction to sell in proper form, a check will be
                      mailed to you within seven days, although we will attempt
                      to make payment within one business day. Payment may also
                      be sent to your brokerage account.
 
                      Payment may be postponed or the right to sell your shares
                      suspended, however, under unusual circumstances. If you
                      request to sell shares that
 
                                                                              13
<PAGE>
SHAREHOLDER INFORMATION, CONTINUED
 
                      were recently purchased by check, payment of the sale
                      proceeds may be delayed for the minimum time needed to
                      verify that the check has been honored (not more than
                      fifteen days from the time we receive the check).
 
                       INVOLUNTARY SALES. The Fund reserves the right, on sixty
                       days' notice, to sell the shares of any shareholder whose
                      shares, due to sales by the shareholder, have a value
                      below $500. However, before the Fund sells your shares in
                      this manner, we will notify you and allow you sixty days
                      to make an additional investment in an amount that will
                      increase the value of your account to at least the
                      required amount before the sale is processed.
 
                       MONEY MARKET FUND AUTOMATIC SALE PROCEDURES. If you
                       maintain a brokerage account with Dean Witter Reynolds or
                      another authorized dealer of Fund shares, you may elect to
                      have your Fund shares automatically sold from your account
                      to satisfy amounts you owe as a result of purchasing
                      securities or other transactions in your brokerage
                      account.
(Sidebar)
TARGETED DIVIDENDS-SM-
You may select to have your Fund distributions automatically invested in another
Morgan Stanley Dean Witter Fund that you own. Contact your Morgan Stanley Dean
Witter Financial Advisor for further information about this service.
(End Sidebar)
 
                      If you elect to participate by notifying Dean Witter
                      Reynolds or another authorized dealer of Fund shares, your
                      brokerage account will be scanned each business day prior
                      to the close of business (4:00 p.m. Eastern time). After
                      any cash balances in the account are applied, a sufficient
                      number of Fund shares may be sold to satisfy any amounts
                      you are obligated to pay to Dean Witter Reynolds or
                      another authorized dealer of fund shares. Sales will be
                      effected on the business day before the date you are
                      obligated to make payment, and Dean Witter Reynolds or
                      another authorized dealer of Fund shares will receive the
                      sale proceeds on the following day.
 
                       EASYINVEST -SM- -- AUTOMATIC REDEMPTION. You may invest
                       in shares of certain other Morgan Stanley Dean Witter
                      Funds by subscribing to EASYINVEST -SM-, an automatic
                      purchase plan that provides for the automatic investment
                      of any amount from $100 to $5,000 in shares of the
                      specified fund. Under EASYINVEST -SM-, you may direct that
                      a sufficient number of shares of the Fund be automatically
                      sold and the proceeds transferred to Morgan Stanley Dean
                      Witter Trust FSB, on a semi-monthly, monthly or
 
14
<PAGE>
                      quarterly basis, for investment in shares of the specified
                      fund. Sales of your Fund shares will be made on the
                      business day preceding the investment date and Morgan
                      Stanley Dean Witter Trust FSB will receive the proceeds
                      for investment on the day following the sale date.
 
                       MARGIN ACCOUNTS. Certain restrictions may apply to Fund
                       shares pledged in margin accounts with Dean Witter
                      Reynolds or another authorized broker-dealer of Fund
                      shares. If you hold Fund shares in this manner, please
                      contact your Morgan Stanley Dean Witter Financial Advisor
                      or other authorized financial representative for more
                      details.
 
                      DISTRIBUTIONS
- --------------------------------------------------------------------------------
                      The Fund passes substantially all of its earnings along to
                      its investors as "distributions." The Fund earns interest
                      from fixed-income investments. These amounts are passed
                      along to Fund shareholders as "income dividend
                      distributions." The Fund may realize capital gains
                      whenever it sells securities for a higher price than it
                      paid for them. These amounts are passed along as "capital
                      gain distributions;" the Investment Manager does not
                      anticipate that there will be significant capital gain
                      distributions.
 
                      The Fund declares income dividends, payable on each day
                      the New York Stock Exchange is open for business, of all
                      of its daily net income to shareholders of record as of
                      the close of business the preceding business day. Capital
                      gains, if any, are distributed periodically.
 
                      Distributions are reinvested automatically in additional
                      shares of the Fund (rounded to the last 1/100 of a share)
                      and automatically credited to your account unless you
                      request in writing that distributions be paid in cash. If
                      you elect the cash option, the Fund will reinvest the
                      additional shares and credit your account during the
                      month, then redeem the credited amount no later than the
                      last business day of the month, and mail a check to you no
                      later than seven business days after the end of the month.
                      No interest will accrue on uncashed checks. If you wish to
                      change how your distributions are paid, your request
                      should be received by the Fund's transfer agent, Morgan
                      Stanley Dean Witter Trust FSB, at least five business days
                      prior to the record date of the distributions.
 
                                                                              15
<PAGE>
SHAREHOLDER INFORMATION, CONTINUED
 
                      TAX CONSEQUENCES
- --------------------------------------------------------------------------------
                      As with any investment, you should consider how your Fund
                      investment will be taxed. The tax information in this
                      PROSPECTUS is provided as general information. You should
                      consult your own tax professional about the tax
                      consequences of an investment in the Fund.
 
                      Unless your investment in the Fund is through a
                      tax-deferred retirement account, such as a 401(k) plan or
                      IRA, you need to be aware of the possible tax consequences
                      when the Fund makes distributions.
 
                      Your distributions are normally subject to federal and
                      state income tax when they are paid, whether you take them
                      in cash or reinvest them in Fund shares. A distribution
                      also may be subject to local income tax. Any income
                      dividend distributions and any short-term capital gain
                      distributions are taxable to you as ordinary income. Any
                      long-term capital gain distributions are taxable as
                      long-term capital gains, no matter how long you have owned
                      shares in the Fund.
 
                      Every January, you will be sent a statement (IRS Form
                      1099-DIV) showing the taxable distributions paid to you in
                      the previous year. The statement provides full information
                      on your dividends and capital gains for tax purposes.
 
                      When you open your Fund account, you should provide your
                      social security or tax identification number on your
                      investment application. By providing this information, you
                      will avoid being subject to a federal backup withholding
                      tax of 31% on taxable distributions and sale proceeds. Any
                      withheld amount would be sent to the IRS as an advance tax
                      payment.
 
                      PLAN OF DISTRIBUTION
- --------------------------------------------------------------------------------
                      The Fund has adopted a Plan of Distribution in accordance
                      with Rule 12b-1 under the Investment Company Act of 1940.
                      The Plan allows the Fund to pay distribution fees for the
                      sale and distribution of these shares. It also allows the
                      Fund to pay for services to shareholders. Because these
                      fees are paid out of the Fund's assets on an ongoing
                      basis, over time these fees will increase the cost of your
                      investment and may cost you more than paying other types
                      of sales charges.
 
16
<PAGE>
FINANCIAL HIGHLIGHTS
 
The financial highlights table is intended to help you understand the Fund's
financial performance for the past 5 fiscal years of the Fund. Certain
information reflects financial results for a single Fund share. The total
returns in the table represent the rate an investor would have earned or lost on
an investment in the Fund (assuming reinvestment of all dividends and
distributions).
 
This information has been audited by                                 , whose
report, along with the Fund's financial statements, is included in this
PROSPECTUS.
 
<TABLE>
<CAPTION>
 YEARS ENDED JANUARY 31                                        1998    1997    1996    1995    1994
<S>                                                           <C>     <C>     <C>     <C>     <C>
- ----------------------------------------------------------------------------------------------------
 
 SELECTED PER-SHARE DATA
- ----------------------------------------------------------------------------------------------------
 Net asset value, beginning of period                         $00.00  $00.00  $00.00  $00.00  $00.00
- ----------------------------------------------------------------------------------------------------
    Net investment income (loss)                                0.00    0.00    0.00   0.00a    0.00
    Net realized and unrealized gain (loss)                     0.00    0.00    0.00    0.00    0.00
                                                              ------  ------  ------  ------  ------
 Total from investment operations                               0.00    0.00    0.00    0.00    0.00
- ----------------------------------------------------------------------------------------------------
 Less distributions                                             0.00    0.00    0.00    0.00    0.00
    Net investment income                                       0.00    0.00    0.00    0.00    0.00
    Net realized gains                                          0.00    0.00    0.00    0.00    0.00
    Paid-in-capital                                             0.00    0.00    0.00    0.00    0.00
                                                              ------  ------  ------  ------  ------
 Total distributions                                            0.00    0.00    0.00    0.00    0.00
- ----------------------------------------------------------------------------------------------------
 Net asset value, end of period                                00.00   00.00   00.00   00.00   00.00
- ----------------------------------------------------------------------------------------------------
 
 TOTAL RETURN                                                 $00.00  $00.00  $00.00  $00.00  $00.00
- ----------------------------------------------------------------------------------------------------
 
 RATIOS TO AVERAGE NET ASSETS
- ----------------------------------------------------------------------------------------------------
 Expenses                                                       0.00%   0.00%   0.00%   0.00%   0.00%
- ----------------------------------------------------------------------------------------------------
 Net income (loss)                                              0.00%   0.00%   0.00%   0.00%   0.00%
- ----------------------------------------------------------------------------------------------------
</TABLE>
 
                                                                              17
<PAGE>
 
  2  3  0 --
 for office use only
 
                                                                [LOGO]
APPLICATION
 
MORGAN STANLEY DEAN WITTER U.S. GOVERNMENT MONEY MARKET TRUST
Send to: Morgan Stanley Dean Witter Trust FSB (the "Transfer Agent"), P.O. Box
1040, Jersey City, NJ 07303

[REMOVE APPLICATION CAREFULLY]

<TABLE>
<S>             <C>
INSTRUCTIONS    For assistance in completing this application, telephone Morgan Stanley Dean Witter Trust FSB at (800) 869-NEWS
                (toll-free).
TO REGISTER
SHARES           1.
(please print)
                ---------------------------------------------------------------------------------------------------------------
                                  First Name                                    Last Name
- -As joint
  tenants,
  use line 1 & 2  2.
                ---------------------------------------------------------------------------------------------------------------
                                  First Name                                    Last Name
                   (Joint tenants with rights of survivorship unless otherwise
                   specified)
                                                                                              ------------------------
                                                                                              Social Security Number
- -As custodian
  for a minor,   3.
  use lines 1 &
  3
                ---------------------------------------------------------------------------------------------------------------
                                                                    Minor's Name
                   Under the________Uniform Gifts to Minors Act                            ---------------------------
                                                                                           Minor's Social Security Number
                   State of Residence of Minor
- -In the name of a
  corporation,   4.
  trust,
  partnership
  or other      ---------------------------------------------------------------------------------------------------------------
                                    Name of Corporation, Trust (including trustee name(s)) or Other Organization
  institutional
  investors, use
  line 4
                   If Trust, Date of Trust Instrument:____________                          Tax Identification
                                                                                             Number__________
ADDRESS
                ---------------------------------------------------------------------------------------------------------------
                   City                       State                       Zip Code

TO PURCHASE
SHARES:
Minimum Initial   / / CHECK (enclosed) $__________ (Make Payable to Morgan Stanley Dean Witter U.S. Government Money Market
Investment:       Trust)
$1,000            / / WIRE*  On__________          MF*________
                  (Date)                            (Control number, this transaction)

                  ----------------------------------------------------------------------------------------------------------
                  Name of Bank                                                                        Branch
                  ----------------------------------------------------------------------------------------------------------
                  Address
                  ----------------------------------------------------------------------------------------------------------
                  Telephone Number
                  * For an initial investment made by wiring funds, obtain a control number by calling: (800) 869-NEWS
                  (toll-free).
                   Your bank should wire to:
                  Bank of New York for credit to account of Morgan Stanley Dean Witter Trust FSB

                  Account Number: 8900188413
                  Re: Morgan Stanley Dean Witter U.S. Government Money Market Trust
                  Account Of:______________________
                  (Investor's Account as Registered at the Transfer Agent)
                  Control or Account Number:______________________
                  (Assigned by Telephone)
                                                         OPTIONAL SERVICES

                  NOTE: If you are a current shareholder of Morgan Stanley Dean Witter
                  U.S. Government Money Market Trust, please indicate your fund
                  account number here.
                  [ 2 ] [ 3 ] [ 0 ]  -

DIVIDENDS         All dividends will be reinvested daily in additional shares, unless the following option is selected:
                  / / Pay income dividends by check at the end of each month.
WRITE YOUR OWN    / / Send an initial supply of checks.
CHECK             FOR JOINT ACCOUNTS:
                  / / CHECK THIS BOX IF ALL OWNERS ARE REQUIRED TO SIGN CHECKS.
</TABLE>
 
<PAGE>
 
<TABLE>
<S>               <C>
                  / /  Morgan Stanley Dean Witter Trust FSB is hereby authorized to honor telephonic or other instructions, without
PAYMENT TO           signature guarantee, from any person for the redemption of any or all shares of Morgan Stanley Dean Witter U.S.
PREDESIGNATED          Government Money Market Trust held in my (our) account provided that proceeds are transmitted only to the
BANK ACCOUNT           following bank account. (Absent its own negligence, neither Morgan Stanley Dean Witter U.S. Government Money
                       Market Trust nor Morgan Stanley Dean Witter Trust FSB (the "Transfer Agent") shall be liable for any
                       redemption caused by unauthorized instruction(s)):
Bank Account must be in
same  name  as  shares  are
registered        -------------------------------------------------------------------------------  ------------------------------
                  NAME & BANK ACCOUNT NUMBER                                                        BANK'S ROUTING TRANSMIT CODE
                                                                                                          (ASK YOUR BANK)
Minimum Amount:
$1,000            NAME OF BANK
                  -------------------------------------------------------------------------------
                  ADDRESS OF BANK
                  -------------------------------------------------------------------------------
                  TELEPHONE NUMBER OF BANK
                                                              SIGNATURE AUTHORIZATION
FOR ALL ACCOUNTS  NOTE: RETAIN A COPY OF THIS DOCUMENT FOR YOUR RECORDS. ANY MODIFICATION OF THE INFORMATION BELOW WILL REQUIRE AN
                  AMENDMENT TO THIS FORM. THIS DOCUMENT IS IN FULL FORCE AND EFFECT UNTIL ANOTHER DULY EXECUTED FORM IS RECEIVED BY
                  THE TRANSFER AGENT.
                  The "Transfer Agent" is hereby authorized to act as agent for the registered owner of shares of Morgan Stanley
                  Dean Witter U.S. Government Money Market Trust (the "Fund") in effecting redemptions of shares and is authorized
                  to recognize the signature(s) below in payment of funds resulting from such redemptions on behalf of the
                  registered owners of such shares. The Transfer Agent shall be liable only for its own negligence and not for
                  default or negligence of its correspondents, or for losses in transit. The Fund shall not be liable for any
                  default or negligence of the Transfer Agent.
                  I (we) certify to my (our) legal capacity, or the capacity of the investor named above, to invest in and redeem
                  shares of, and I (we) acknowledge receipt of a current prospectus of, Morgan Stanley Dean Witter U.S. Government
                  Money Market Trust and (we) further certify my (our) authority to sign and act for and on behalf of the investor.
                  Under penalties of perjury, I certify (1) that the number shown on this form is my correct taxpayer identification
                  number and (2) that I am not subject to backup withholding either because I have not been notified that I am
                  subject to backup withholding as a result of a failure to report all interest or dividends, or the Internal
                  Revenue Service has notified me that I am no longer subject to backup withholding. (Note: You must cross out item
                  (2) above if you have been notified by IRS that you are currently subject to backup withholding because of
                  underreporting interest or dividends on your tax return.)
                  For Individual, Joint and Custodial Accounts for Minors, Check Applicable Box:
                  / / I am a United States Citizen.                     / / I am not a United States Citizen.
                                                  SIGNATURE(S) (IF JOINT TENANTS, ALL MUST SIGN)
</TABLE>
 
<TABLE>
<S>               <C>                                                       <C>
                  ------------------------------------------------          ------------------------------------------------
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA                  SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                  --------------------------------------------------------  --------------------------------------------------------
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA                  SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
Name(s) must be
signed
exactly the same  SIGNED THIS_______________DAY OF__________, 19____.
as shown on
lines 1 to 4 on
the reverse
side of this                                FOR CORPORATIONS, TRUSTS, PARTNERSHIPS AND OTHER ORGANIZATIONS
application
                  The following named persons are currently officers/trustees/general partners/other authorized signatories of the
                  Registered Owner, and any * of them ("Authorized Person(s)") is/are currently authorized under the applicable
                  governing document to act with full power to sell, assign or transfer securities of the the Fund for the
                  Registered Owner and to execute and deliver any instrument necessary to effectuate the authority hereby conferred:
                                         NAME/TITLE                                                SIGNATURE
</TABLE>
 
<TABLE>
<S>               <C>                                                       <C>
In addition,
complete
Section A or B    --------------------------------------------------------  --------------------------------------------------------
below.
                  --------------------------------------------------------  --------------------------------------------------------
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA                  SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                  --------------------------------------------------------  --------------------------------------------------------
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA                  SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                  --------------------------------------------------------  --------------------------------------------------------
                          SIGNATURE MUST BE KEPT WITHIN ABOVE AREA                  SIGNATURE MUST BE KEPT WITHIN ABOVE AREA
                  SIGNED THIS____________DAY OF____________, 19____.
                  The Transfer Agent may, without inquiry, act only upon the instruction of ANY PERSON(S) purporting to be (an)
                  Authorized Person(s) as named in the Certification Form last received by the Transfer Agent. The Transfer Agent
                  and the Fund shall not be liable for any claims, expenses (including legal fees) or losses resulting from the
                  Transfer Agent having acted upon any instruction reasonably believed genuine.
                  ------------------------------------------------------------------------------------------------------------------
                  *INSERT A NUMBER. UNLESS OTHERWISE INDICATED, THE TRANSFER AGENT MAY HONOR INSTRUCTIONS OF ANY ONE OF THE PERSONS
                   NAMED ABOVE.
</TABLE>
 
<TABLE>
<S>                   <C>
SECTION (A)           NOTE: EITHER A SIGNATURE GUARANTEE OR CORPORATE SEAL IS REQUIRED.
CORPORATIONS AND
INCORPORATED
ASSOCIATIONS ONLY.    I, ____________, Secretary of the Registered Owner, do hereby certify that at a meeting on
SIGN ABOVE AND COM-   ____________ at which a quorum was present throughout, the Board of Directors of the
PLETE THIS            corporation/the officers of the association duly adopted a resolution, which is in full force and
SECTION               effect and in accordance with the Registered Owner's charter and by-laws, which resolution did the
                      following: (1) empowered the above-named Authorized Person(s) to effect securities transactions
                      for the Registered Owner on the terms described above; (2) authorized the Secretary to certify,
                      from time to time, the names and titles of the officers of the Registered Owner and to notify the
                      Transfer Agent when changes in office occur; and (3) authorized the Secretary to certify that such
                      a resolution has been duly adopted and will remain in full force and effect until the Transfer
                      Agent receives a duly executed amendment to the Certification Form.
SIGNATURE
GUARANTEE**           Witness my hand on behalf of the corporation/association this ______ day of ____________, 19____.
(or Corporate Seal)
                      --------------------------------------------------------------------------------------------------
                                                                 Secretary**
                      The undersigned officer (other than the Secretary) hereby certifies that the foregoing instrument
                      has been signed by the Secretary of the
                      corporation/association.
SIGNATURE
GUARANTEE**           --------------------------------------------------------------------------------------------------
(or Corporate Seal)                  Certifying Officer of the Corporation or Incorporated Association**
SECTION (B) ALL                                    NOTE: A SIGNATURE GUARANTEE IS REQUIRED.
OTHER
INSTITUTIONAL         --------------------------------------------------------------------------------------------------
INVESTORS                                                         Certifying
SIGNATURE                                          Trustee(s)/General Partner(s)/Other(s)**
GUARANTEE**
                      --------------------------------------------------------------------------------------------------
SIGN ABOVE AND COM-                                               Certifying
PLETE THIS SECTION                                 Trustee(s)/General Partner(s)/Other(s)**
                      **SIGNATURE(S) MUST BE GUARANTEED BY AN ELIBIGLE GUARANTOR
</TABLE>
 
<TABLE>
<S>               <C>                                                   <C>                                                 <C>
DEALER            Above signature(s) guaranteed. Prospectus has been delivered by undersigned to above-named applicant(s).
(if any)
Completion by
dealer only       ----------------------------------------------------  ----------------------------------------------------
                  Firm Name                                             Office Number-Account Number at Dealer-A/E Number
                  ----------------------------------------------------  ----------------------------------------------------
                  Address                                               Account Executive's Last Name
                  ----------------------------------------------------  ----------------------------------------------------
                  City, State, Zip Code                                 Branch Office
</TABLE>
 
- -Registered Trademark- 1999 Morgan Stanley Dean Witter Distributors Inc.
<PAGE>
MORGAN STANLEY DEAN WITTER
FAMILY OF FUNDS
 
                           The Morgan Stanley Dean Witter Family of Funds offers
                           investors a wide range of investment choices. Come on
                           in and meet the family!
- --------------------------------------------------------------------------------
 GROWTH FUNDS
- ---------------------------------
 
GROWTH FUNDS
Aggressive Equity Fund
American Opportunities Fund
Capital Growth Securities
Developing Growth Securities
Equity Fund
Growth Fund
Market Leader Trust
Mid-Cap Growth Fund
Special Value Fund
Value Fund
 
THEME FUNDS
Financial Services Trust
Health Sciences Trust
Information Fund
Natural Resource Development Securities
Precious Metals and Minerals Trust
Utilities Fund
 
GLOBAL/INTERNATIONAL FUNDS
Competitive Edge Fund - "Best Ideas" Portfolio
European Growth Fund
Fund of Funds - International Portfolio
Global Dividend Growth Securities
Global Utilities Fund
International SmallCap Fund
Japan Fund
Pacific Growth Fund
- --------------------------------------------------------------------------------
 GROWTH AND INCOME FUNDS
- ---------------------------------
Balanced Growth Fund
Balanced Income Fund
Convertible Securities Trust
Dividend Growth Securities
Fund of Funds - Domestic Portfolio
Income Builder Fund
Mid-Cap Dividend Growth Securities
S&P 500 Index Fund
S&P 500 Select Fund
Strategist Fund
Value-Added Market Series/Equity Portfolio
- --------------------------------------------------------------------------------
 INCOME FUNDS
- ---------------------------------
 
GOVERNMENT INCOME FUNDS
Federal Securities Trust
Short-Term U.S. Treasury Trust
U.S. Government Securities Trust
 
DIVERSIFIED INCOME FUNDS
Diversified Income Trust
 
CORPORATE INCOME FUNDS
High Yield Securities
Intermediate Income Securities
Short-Term Bond Fund
 
GLOBAL INCOME FUNDS
World Wide Income Trust
 
TAX-FREE INCOME FUNDS
California Tax-Free Income Fund
Hawaii Municipal Trust (FSC)
Limited Term Municipal Trust (NL)
Multi-State Municipal Series Trust (FSC)
New York Tax-Free Income Fund
Tax-Exempt Securities Trust
- --------------------------------------------------------------------------------
 MONEY MARKET FUNDS
- ---------------------------------
 
TAXABLE MONEY MARKET FUNDS
Liquid Asset Fund (MM)
U.S. Government Money Market Trust (MM)
 
TAX-FREE MONEY MARKET FUNDS
California Tax-Free Daily Income Trust (MM)
N.Y. Municipal Money Market Trust (MM)
Tax-Free Daily Income Trust (MM)
 
There may be Funds created after this PROSPECTUS was published. Please consult
the inside front cover of a new Fund's PROSPECTUS for its designation, e.g.,
Multi-Class Fund or Money Market Fund.
 
Each listed Morgan Stanley Dean Witter Fund, unless otherwise noted, is a
Multi-Class Fund, which is a mutual fund offering multiple Classes of shares.
The other types of funds are: NL - No-Load (Mutual) Fund; MM - Money Market
Fund; FSC - A mutual fund sold with a front-end sales charge and a distribution
(12b-1) fee.
<PAGE>
                                                     PROSPECTUS - MARCH 29, 1999
 
Additional information about the Fund's investments is available in the Fund's
ANNUAL AND SEMI-ANNUAL REPORTS TO SHAREHOLDERS (the current annual report is
included in this PROSPECTUS). The Fund's STATEMENT OF ADDITIONAL INFORMATION
also provides additional information about the Fund. The STATEMENT OF ADDITIONAL
INFORMATION is incorporated herein by reference (legally is part of this
PROSPECTUS). For a free copy of any of these documents, please call:
 
                                 (212) 392-2550
                                       OR
                           (800) 869-NEWS (TOLL-FREE)
 
You also may obtain information about the Fund by calling your Morgan Stanley
Dean Witter Financial Advisor or by visiting our Internet site at:
 
                            www.deanwitter.com/funds
 
Information about the Fund (including the STATEMENT OF ADDITIONAL INFORMATION)
can be viewed and copied at the Securities and Exchange Commission's Public
Reference Room in Washington, DC. Information about the
Reference Room's operations may be obtained by calling the SEC at (800)
SEC-0330. Reports and other information about the Fund are available on the
SEC's Internet site at www.sec.gov, and copies of this information may be
obtained, upon payment of a duplicating fee, by writing the Public Reference
Section of the SEC, Washington, DC 20549-6009.
 
Morgan Stanley Dean Witter
                                                                 U.S. GOVERNMENT
                                                              MONEY MARKET TRUST
 
                               [BACK COVER PHOTO]
 
 TICKER SYMBOL: DWGXX
<PAGE>
 
STATEMENT OF ADDITIONAL INFORMATION                           MORGAN STANLEY
MARCH 29, 1999                                                DEAN WITTER
                                                              U.S. GOVERNMENT
                                                              MONEY MARKET
                                                              TRUST
 
- --------------------------------------------------------------------------------
 
    This STATEMENT OF ADDITIONAL INFORMATION is not a PROSPECTUS. The PROSPECTUS
(dated March 29, 1999) for the Morgan Stanley Dean Witter U.S. Government Money
Market Trust may be obtained without charge from the Fund at its address or
telephone numbers listed below or from Dean Witter Reynolds at any of its branch
offices.
 
Morgan Stanley Dean Witter
U.S. Government Money Market Trust
Two World Trade Center
New York, New York 10048
(212) 392-2550 or
(800) 869-NEWS
<PAGE>
TABLE OF CONTENTS
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<TABLE>
<S>                                                                                      <C>
I. Fund History........................................................................          4
 
II. Description of the Fund and Its Investments and Risks..............................          4
 
  A. Classification....................................................................          4
 
  B. Investment Strategies and Risks...................................................          4
 
  C. Fund Policies/Investment Restrictions.............................................          6
 
III. Management of the Fund............................................................          7
 
  A. Board of Trustees.................................................................          7
 
  B. Management Information............................................................          7
 
  C. Compensation......................................................................         12
 
IV. Control Persons and Principal Holders of Securities................................         14
 
V. Investment Management and Other Services............................................         14
 
  A. Investment Manager................................................................         14
 
  B. Principal Underwriter.............................................................         15
 
  C. Services Provided by the Investment Manager and Fund Expenses Paid by Third
   Parties.............................................................................         15
 
  D. Rule 12b-1 Plan...................................................................         16
 
  E. Other Service Providers...........................................................         18
 
VI. Brokerage Allocation and Other Practices...........................................         18
 
  A. Brokerage Transactions............................................................         18
 
  B. Commissions.......................................................................         18
 
  C. Brokerage Selection...............................................................         19
 
  D. Directed Brokerage................................................................         20
 
  E. Regular Broker-Dealers............................................................         20
 
VII. Capital Stock and Other Securities................................................         20
 
VIII. Purchase, Redemption and Pricing of Shares.......................................         21
 
  A. Purchase/Redemption of Shares.....................................................         21
 
  B. Offering Price....................................................................         21
 
IX. Taxation of the Fund and Shareholders..............................................         23
 
X. Underwriters........................................................................         24
 
XI. Calculation of Performance Data....................................................         24
 
XII. Financial Statements..............................................................         25
</TABLE>
 
                                       2
<PAGE>
GLOSSARY OF SELECTED DEFINED TERMS
- --------------------------------------------------------------------------------
 
    The terms defined in this glossary are frequently used in this STATEMENT OF
ADDITIONAL INFORMATION (other terms used occasionally are defined in the text of
the document).
 
"CUSTODIAN"--The Bank of New York is the Custodian of the Fund's assets.
 
"DEAN WITTER REYNOLDS"--Dean Witter Reynolds Inc., a wholly-owned broker-dealer
subsidiary of MSDW.
 
"DISTRIBUTOR"--Morgan Stanley Dean Witter Distributors Inc., a wholly-owned
broker-dealer subsidiary of MSDW.
 
"FINANCIAL ADVISORS"--Morgan Stanley Dean Witter authorized financial services
representatives.
 
"FUND"--Morgan Stanley Dean Witter U.S. Government Money Market Trust, a
registered open-end investment company.
 
"INVESTMENT MANAGER"--Morgan Stanley Dean Witter Advisors Inc., a wholly-owned
investment advisor subsidiary of MSDW.
 
"INDEPENDENT TRUSTEES"--Trustees who are not "interested persons" (as defined by
the Investment Company Act) of the Fund.
 
"MORGAN STANLEY & CO."--Morgan Stanley & Co. Incorporated, a wholly-owned
broker-dealer subsidiary of MSDW.
 
"MORGAN STANLEY DEAN WITTER FUNDS"--Registered investment companies (i) for
which the Investment Manager serves as the investment advisor and (ii) that hold
themselves out to investors as related companies for investment and investor
services.
 
"MSDW"--Morgan Stanley Dean Witter & Co., a preeminent global financial services
firm.
 
"MSDW SERVICES COMPANY"--Morgan Stanley Dean Witter Services Company Inc., a
wholly-owned fund services subsidiary of the Investment Manager.
 
"TRANSFER AGENT"--Morgan Stanley Dean Witter Trust FSB, a wholly-owned transfer
agent subsidiary of MSDW.
 
"TRUSTEES"--The Board of Trustees of the Fund.
 
                                       3
<PAGE>
I. FUND HISTORY
- --------------------------------------------------------------------------------
 
    The Fund was organized as a Massachusetts business trust, under a
Declaration of Trust, on November 18, 1981, with the name Sears U.S. Government
Money Market Trust. On March 21, 1983, the Fund's name was changed to Dean
Witter/Sears U.S. Government Money Market Trust. On February 19, 1993, the
Fund's name was changed to Dean Witter U.S. Government Money Market Trust.
Effective June 22, 1998, the Fund's name was changed to Morgan Stanley Dean
Witter U.S. Government Money Market Trust.
 
II. DESCRIPTION OF THE FUND AND ITS INVESTMENTS AND RISKS
- --------------------------------------------------------------------------------
 
A. CLASSIFICATION
 
    The Fund is an open-end, diversified management investment company whose
investment objectives are security of principal, high current income and
liquidity.
 
B. INVESTMENT STRATEGIES AND RISKS
 
    The following discussion of the Fund's investment strategies and risks
should be read with the sections of the Fund's PROSPECTUS titled "Principal
Investment Strategies" and "Principal Risks."
 
    REPURCHASE AGREEMENTS.  The Fund may invest in repurchase agreements. When
cash may be available for only a few days, it may be invested by the Fund in
repurchase agreements until such time as it may otherwise be invested or used
for payments of obligations of the Fund. These agreements, which may be viewed
as a type of secured lending by the Fund, typically involve the acquisition by
the Fund of debt securities from a selling financial institution such as a bank,
savings and loan association or broker-dealer. The agreement provides that the
Fund will sell back to the institution, and that the institution will
repurchase, the underlying security serving as collateral at a specified price
and at a fixed time in the future, usually not more than seven days from the
date of purchase. The Fund will accrue interest from the institution until the
time when the repurchase is to occur. Although this date is deemed by the Fund
to be the maturity date of a repurchase agreement, the maturities of securities
subject to repurchase agreements are not subject to any limits.
 
    While repurchase agreements involve certain risks not associated with direct
investments in debt securities, the Fund follows procedures designed to minimize
such risks. These procedures include effecting repurchase transactions only with
large, well capitalized and well established financial institutions, whose
financial condition will be continuously monitored. In addition, the value of
the collateral underlying the repurchase agreement will always be at least equal
to the resale price which consists of the acquisition price paid to the seller
of the securities plus the accrued resale premium which is defined as the amount
specified in the repurchase agreement or the daily amortization of the
difference between the acquisition price and the resale price specified in the
repurchase agreement. Such collateral will consist entirely of securities that
are direct obligations of, or that are fully guaranteed as to principal and
interest by, the United States or any agency thereof, and/or certificates of
deposit, bankers' acceptances which are eligible for acceptance by a Federal
Reserve Bank, and, if the seller is a bank, mortgage related securities (as such
term is defined in section 3(a)(41) of the Securities Exchange Act of 1934 that,
at the time the repurchase agreement is entered into, are rated in the highest
rating category by the Requisite NRSROs (as defined under Rule 2a-7 of the
Investment Company Act of 1940). Additionally, Upon an Event of Insolvency (as
defined under Rule 2a-7) with respect to the seller, the collateral must qualify
the repurchase agreement for preferential treatment under a provision of
applicable insolvency law providing an exclusion from any automatic stay of
creditors' rights against the seller. In the event of a default or bankruptcy by
a selling financial institution, the Fund will seek to liquidate such
collateral. However, the exercising of the Fund's right to liquidate such
collateral could involve certain costs or delays and, to the extent that
proceeds from any sale upon a default of the obligation to repurchase were less
than the repurchase price, the Fund could suffer a loss. It is the current
policy of the Fund not to invest in repurchase agreements that do not mature
within seven days if any such investment, together
 
                                       4
<PAGE>
with any other illiquid assets held by the Fund, amount to more than 10% of its
total assets. The Fund's investments in repurchase agreements may at times be
substantial when, in the view of the Fund's investment manager, liquidity or
other considerations warrant.
 
    REVERSE REPURCHASE AGREEMENTS.  The Fund may also use reverse repurchase
agreements as part of its investment strategy. Reverse repurchase agreements
involve sales by the Fund of portfolio assets concurrently with an agreement by
the Fund to repurchase the same assets at a later date at a fixed price.
Generally, the effect of such a transaction is that the Fund can recover all or
most of the cash invested in the portfolio securities involved during the term
of the reverse repurchase agreement, while it will be able to keep the interest
income associated with those portfolio securities. Such transactions are only
advantageous if the interest cost to the Fund of the reverse repurchase
transaction is less than the cost of obtaining the cash otherwise. Opportunities
to achieve this advantage may not always be available, and the Fund intends to
use the reverse repurchase technique only when it will be to its advantage to do
so. The Fund will establish a segregated account with its custodian bank in
which it will maintain cash or cash equivalents or other portfolio securities
equal in value to its obligations in respect of reverse repurchase agreements.
Reverse repurchase agreements are considered borrowings by the Fund and for
purposes other than meeting redemptions may not exceed 5% of the Fund's total
assets.
 
    LENDING PORTFOLIO SECURITIES.  The Fund may lend its portfolio securities to
brokers, dealers and other financial institutions, provided that the loans are
callable at any time by the Fund, and are at all times secured by cash or cash
equivalents, which are maintained in a segregated account pursuant to applicable
regulations and that are equal to at least 100% of the market value, determined
daily, of the loaned securities. The advantage of these loans is that the Fund
continues to receive the income on the loaned securities while at the same time
earning interest on the cash amounts deposited as collateral, which will be
invested in short-term obligations. The Fund will not lend its portfolio
securities if such loans are not permitted by the laws or regulations of any
state in which its shares are qualified for sale and will not lend more than 10%
of the value of its total assets.
 
    As with any extensions of credit, there are risks of delay in recovery and,
in some cases, even loss of rights in the collateral should the borrower of the
securities fail financially. However, these loans of portfolio securities will
only be made to firms deemed by the Fund's management to be creditworthy and
when the income which can be earned from such loans justifies the attendant
risks. Upon termination of the loan, the borrower is required to return the
securities to the Fund. Any gain or loss in the market price during the loan
period would inure to the Fund.
 
    When voting or consent rights which accompany loaned securities pass to the
borrower, the Fund will follow the policy of calling the loaned securities, to
be delivered within one day after notice, to permit the exercise of the rights
if the matters involved would have a material effect on the Fund's investment in
the loaned securities. The Fund will pay reasonable finder's, administrative and
custodial fees in connection with a loan of its securities.
 
    WHEN-ISSUED AND DELAYED DELIVERY SECURITIES.  From time to time the Fund may
purchase securities on a when-issued or delayed delivery basis. When these
transactions are negotiated, the price is fixed at the time of the commitment,
but delivery and payment can take place a month or more after the date of
commitment. While the Fund will only purchase securities on a when-issued,
delayed delivery with the intention of acquiring the securities, the Fund may
sell the securities before the settlement date, if it is deemed advisable. The
securities so purchased or sold are subject to market fluctuation and no
interest or dividends accrue to the purchaser prior to the settlement date.
 
    At the time the Fund makes the commitment to purchase or sell securities on
a when-issued, delayed delivery, it will record the transaction and thereafter
reflect the value, each day, of such security purchased, or if a sale, the
proceeds to be received, in determining its net asset value. At the time of
delivery of the securities, their value may be more or less than the purchase or
sale price. An increase in the percentage of the Fund's assets committed to the
purchase of securities on a when-issued, delayed delivery may increase the
volatility of its net asset value. The Fund will also establish a segregated
 
                                       5
<PAGE>
account on the Fund's books in which it will continually maintain cash or cash
equivalents or other liquid portfolio securities equal in value to commitments
to purchase securities on a when-issued or delayed delivery basis.
 
    YEAR 2000.  The investment management services provided to the Fund by the
Investment Manager and the services provided to shareholders by the Distributor
and the Transfer Agent depend on the smooth functioning of their computer
systems. Many computer software systems in use today cannot recognize the year
2000, but revert to 1900 or some other date, due to the manner in which dates
were encoded and calculated. That failure could have a negative impact on the
handling of securities trades, pricing and account services. The Investment
Manager, the Distributor and the Transfer Agent have been actively working on
necessary changes to their own computer systems to prepare for the year 2000 and
expect that their systems will be adapted before that date, but there can be no
assurance that they will be successful, or that interaction with other
non-complying computer systems will not impair their services at that time.
 
    In addition, it is possible that the markets for securities in which the
Fund invests may be detrimentally affected by computer failures throughout the
financial services industry beginning January 1, 2000. Improperly functioning
trading systems may result in settlement problems and liquidity issues. In
addition, corporate and governmental data processing errors may result in
production problems for individual companies and overall economic uncertainties.
Earnings of individual issuers will be affected by remediation costs, which may
be substantial and may be reported inconsistently in U.S. and foreign financial
statements. Accordingly, the Fund's investments may be adversely affected.
 
C. FUND POLICIES/INVESTMENT RESTRICTIONS
 
    The investment policies/restrictions listed below have been adopted by the
Fund as fundamental policies. Under the Investment Company Act of 1940 (the
"Investment Company Act"), a fundamental policy may not be changed without the
vote of a majority of the outstanding voting securities of the Fund. The
Investment Company Act defines a majority as the lesser of (a) 67% or more of
the shares present at a meeting of shareholders, if the holders of 50% of the
outstanding shares of the Fund are present or represented by proxy; or (b) more
than 50% of the outstanding shares of the Fund. For purposes of the following
restrictions: (i) all percentage limitations apply immediately after a purchase
or initial investment; and (ii) any subsequent change in any applicable
percentage resulting from market fluctuations or other changes in total or net
assets does not require elimination of any security from the portfolio.
 
    The Fund may not:
 
         1.  Purchase common stocks, preferred stocks, warrants, other equity
    securities, corporate bonds, municipal bonds or industrial revenue bonds.
 
         2.  Borrow money, except from banks for temporary or emergency
    purposes, including the meeting of redemption requests which might otherwise
    require the untimely disposition of securities; or through its transactions
    in reverse repurchase agreements. Borrowing in the aggregate, including
    reverse repurchase agreements, may not exceed 20%, and borrowing for
    purposes other than meeting redemptions may not exceed 5% of the value of
    the Fund's total assets (including the amount borrowed), less liabilities
    (not including the amount borrowed) at the time the borrowing is made.
    Borrowings in excess of 5% will be repaid before additional investments are
    made.
 
         3.  Pledge, hypothecate, mortgage or otherwise encumber its assets,
    except in an amount up to 10% of the value of its net assets, but only to
    secure borrowings for temporary or emergency purposes.
 
         4.  Sell securities short or purchase securities on margin.
 
         5.  Write or purchase put or call options.
 
         6.  Underwrite the securities of other issuers or purchase restricted
    securities except insofar as the Fund may enter into any repurchase or
    reverse repurchase agreements.
 
                                       6
<PAGE>
         7.  Purchase or sell real estate, real estate investment trust
    securities, commodities or commodity contracts or oil and gas interests.
 
         8.  Make loans to others, except: (a) by the purchase of qualified debt
    obligations; (b) lending portfolio securities; and (c) by investment in
    repurchase agreements referred to above and in the Prospectus.
 
         9.  Issue senior securities as defined in the Act except insofar as the
    Fund may be deemed to have issued a senior security by reason of: (a)
    entering into any repurchase or reverse repurchase agreement; (b) borrowing
    money in accordance with restrictions described above; or (c) lending
    portfolio securities.
 
        10.  Purchase securities of other investment companies, except in
    connection with a merger, consolidation, reorganization or acquisition of
    assets.
 
        11.  Lend its portfolio securities in excess of 10% of its total assets.
    Any loans of portfolio securities will be made according to guidelines
    established by the Trustees, including maintenance of cash collateral of the
    borrower equal at all times to the current market value of the securities
    loaned.
 
    Notwithstanding any other investment policy or restriction, the Fund may
seek to achieve its investment objective by investing all or substantially all
of its assets in another investment company having substantially the same
investment objective and policies as the Fund.
 
III. MANAGEMENT OF THE FUND
- --------------------------------------------------------------------------------
 
A. BOARD OF TRUSTEES
 
    The Board of Trustees of the Fund oversees the management of the Fund but
does not itself manage the Fund. The Trustees review various services provided
by or under the direction of the Investment Manager to ensure that the Fund's
general investment policies and programs are properly carried out. The Trustees
also conduct their review to ensure that administrative services are provided to
the Fund in a satisfactory manner.
 
    Under state law, the duties of the Trustees are generally characterized as a
duty of loyalty and a duty of care. The duty of loyalty requires a Trustee to
exercise his or her powers in the interest of the Fund and not the Trustee's own
interest or the interest of another person or organization. A Trustee satisfies
his or her duty of care by acting in good faith with the care of an ordinarily
prudent person and in a manner the Trustee reasonably believes to be in the best
interest of the Fund and its shareholders.
 
B. MANAGEMENT INFORMATION
 
    TRUSTEES AND OFFICERS.  The Board of the Fund consists of nine (9) Trustees.
These same individuals also serve as directors or trustees for all of the Morgan
Stanley Dean Witter Funds. Seven Trustees (77% of the total number) have no
affiliation or business connection with the Investment Manager or any of its
affiliated persons and do not own any stock or other securities issued by the
Investment Manager's parent company, MSDW. These are the "non-interested" or
"independent" Trustees. The other two Trustees (the "management Trustees") are
affiliated with the Investment Manager. All of the Independent Trustees also
serve as Independent Trustees of "Discover Brokerage Index Series," a mutual
fund for which the Investment Manager is the investment advisor. Four of the
seven Independent Trustees are also Independent Trustees of certain other mutual
funds, referred to as the "TCW/DW Funds," for which MSDW Services Company is the
manager and TCW Funds Management, Inc. is the investment advisor.
 
                                       7
<PAGE>
    The Trustees and executive officers of the Fund, their principal business
occupations during the last five years and their affiliations, if any, with the
Investment Manager, and with the   Morgan Stanley Dean Witter Funds, the 11
TCW/DW Funds and Discover Brokerage Index Series, are shown below.
 
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
Michael Bozic (58) ...................................  Vice Chairman of Kmart Corporation (since December, 1998);
Trustee                                                 Director or Trustee of the Morgan Stanley Dean Witter
c/o Kmart Corporation                                   Funds; Trustee of Discover Brokerage Index Series;
3100 West Big Beaver Road                               formerly Chairman and Chief Executive Officer of Levitz
Troy, Michigan                                          Furniture Corporation (November, 1995-November, 1998) and
                                                        President and Chief Executive Officer of Hills Department
                                                        Stores (May, 1991-July, 1995); formerly variously
                                                        Chairman, Chief Executive Officer, President and Chief
                                                        Operating Officer (1987-1991) of the Sears Merchandise
                                                        Group of Sears, Roebuck and Co.; Director of Eaglemark
                                                        Financial Services, Inc. and Weirton Steel Corporation.
 
Charles A. Fiumefreddo* (65) .........................  Chairman, Director or Trustee, President and Chief
Chairman of the Board, President,                       Executive Officer of the Morgan Stanley Dean Witter Funds;
Chief Executive Officer and Trustee                     Chairman, Chief Executive Officer and Trustee of the
Two World Trade Center                                  TCW/DW Funds; Trustee of Discover Brokerage Index Series;
New York, New York                                      formerly Chairman, Chief Executive Officer and Director of
                                                        the Investment Manager, the Distributor and MSDW Services
                                                        Company; Executive Vice President and Director of Dean
                                                        Witter Reynolds; Chairman and Director of the Transfer
                                                        Agent; formerly Director and/or officer of various Morgan
                                                        Stanley Dean Witter subsidiaries (until June, 1998).
 
Edwin J. Garn (66) ...................................  Director or Trustee of the Morgan Stanley Dean Witter
Trustee                                                 Funds; Trustee of Discover Brokerage Index Series;
c/o Huntsman Corporation                                formerly United States Senator (R-Utah) (1974-1992) and
500 Huntsman Way                                        Chairman, Senate Banking Committee (1980-1986); formerly
Salt Lake City, Utah                                    Mayor of Salt Lake City, Utah (1971-1974); formerly
                                                        Astronaut, Space Shuttle Discovery (April 12-19, 1985);
                                                        Vice Chairman, Huntsman Corporation; Director of Franklin
                                                        Covey (time management systems), John Alden Financial
                                                        Corp. (health insurance), United Space Alliance (joint
                                                        venture between Lockheed Martin and the Boeing Company)
                                                        and Nuskin Asia Pacific (multilevel marketing); member of
                                                        the board of various civic and charitable organizations.
</TABLE>
 
                                       8
<PAGE>
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
John R. Haire (74) ...................................  Chairman of the Audit Committee and Director or Trustee of
Trustee                                                 the Morgan Stanley Dean Witter Funds; Chairman of the
Two World Trade Center                                  Audit Committee and Trustee of the TCW/DW Funds; Chairman
New York, New York                                      of the Audit Committee and Chairman of the Audit Committee
                                                        and Trustee of Discover Brokerage Index Series; formerly
                                                        Chairman of the Independent Directors or Trustees of the
                                                        Morgan Stanley Dean Witter Funds and the TCW/ DW Funds
                                                        (until June, 1998); formerly President, Council for Aid to
                                                        Education (1978-1989) and Chairman and Chief Executive
                                                        Officer of Anchor Corporation, an investment advisor
                                                        (1964-1978).
 
Wayne E. Hedien (65) .................................  Retired; Director or Trustee of the Morgan Stanley Dean
Trustee                                                 Witter Funds; Trustee of Discover Brokerage Index Series;
c/o Gordon Altman Butowsky                              Director of The PMI Group, Inc. (private mortgage
Weitzen Shalov & Wein                                   insurance); Trustee and Vice Chairman of The Field Museum
Counsel to the Independent Trustees                     of Natural History; formerly associated with the Allstate
114 West 47th Street                                    Companies (1966-1994), most recently as Chairman of The
New York, New York                                      Allstate Corporation (March, 1993-December, 1994) and
                                                        Chairman and Chief Executive Officer of its wholly-owned
                                                        subsidiary, Allstate Insurance Company (July,
                                                        1989-December, 1994); director of various other business
                                                        and charitable organizations.
 
Dr. Manuel H. Johnson (50) ...........................  Senior Partner, Johnson Smick International, Inc., a
Trustee                                                 consulting firm; Co-Chairman and a founder of the Group of
c/o Johnson Smick International, Inc.                   Seven Council (G7C), an international economic commission;
1133 Connecticut Avenue, N.W.                           Director or Trustee of the Morgan Stanley Dean Witter
Washington, D.C.                                        Funds; Trustee of the TCW/ DW Funds; Trustee of Discover
                                                        Brokerage Index Series; Director of NASDAQ (since June,
                                                        1995); Director of Greenwich Capital Markets, Inc.
                                                        (broker-dealer) and NVR, Inc. (home construction); Chair-
                                                        man and Trustee of the Financial Accounting Foundation
                                                        (oversight organization of the Financial Accounting
                                                        Standards Board); formerly Vice Chairman of the Board of
                                                        Governors of the Federal Reserve System (1986-1990) and
                                                        Assistant Secretary of the U.S. Treasury.
 
Michael E. Nugent (62) ...............................  General Partner, Triumph Capital, L.P., a private
Trustee                                                 investment partnership; Director or Trustee of the Morgan
c/o Triumph Capital, L.P.                               Stanley Dean Witter Funds; Trustee of the TCW/DW Funds;
237 Park Avenue                                         Trustee of Discover Brokerage Index Series; formerly Vice
New York, New York                                      President, Bankers Trust Company and BT Capital
                                                        Corporation (1984-1988); director of various business
                                                        organizations.
</TABLE>
 
                                       9
<PAGE>
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
Philip J. Purcell* (55) ..............................  Chairman of the Board of Directors and Chief Executive
Trustee                                                 Officer of MSDW, Dean Witter Reynolds and Novus Credit
1585 Broadway                                           Services Inc.; Director of the Distributor; Director or
New York, New York                                      Trustee of the Morgan Stanley Dean Witter Funds; Trustee
                                                        of Discover Brokerage Index Series; Director and/or
                                                        officer of various MSDW subsidiaries.
 
John L. Schroeder (68) ...............................  Retired; Director or Trustee of the Morgan Stanley Dean
Trustee                                                 Witter Funds; Trustee of the TCW/DW Funds; Trustee of
c/o Gordon Altman Butowsky                              Discover Brokerage Index Series; Director of Citizens
Weitzen Shalov & Wein                                   Utilities Company; formerly Executive Vice President and
Counsel to the Independent Trustees                     Chief Investment Officer of the Home Insurance Company
114 West 47th Street                                    (August, 1991-September, 1995).
New York, New York
 
Barry Fink (44) ......................................  Senior Vice President (since March, 1997) and Secretary
Vice President, Secretary and General Counsel           and General Counsel (since February, 1997) and Director
Two World Trade Center                                  (since July, 1998) of the Investment Manager and MSDW
New York, New York                                      Services Company; Senior Vice President (since March,
                                                        1997) and Assistant Secretary and Assistant General
                                                        Counsel (since February, 1997) of the Distributor;
                                                        Assistant Secretary of Dean Witter Reynolds (since August,
                                                        1996); Vice President, Secretary and General Counsel of
                                                        the Morgan Stanley Dean Witter Funds and the TCW/DW Funds
                                                        (since February, 1997); Vice President, Secretary and
                                                        General Counsel of Discover Brokerage Index Series;
                                                        previously First Vice President (June, 1993-February,
                                                        1997), Vice President and Assistant Secretary and
                                                        Assistant General Counsel of the Investment Manager and
                                                        MSDW Services Company and Assistant Secretary of the Mor-
                                                        gan Stanley Dean Witter Funds and the TCW/DW Funds.
 
Jonathan R. Page (52) ................................  Senior Vice President of the Investment Manager; Vice
Senior Vice President                                   President of various Morgan Stanley Dean Witter Funds.
Two World Trade Center
New York, New York
 
Thomas F. Caloia (52) ................................  First Vice President and Assistant Treasurer of the
Treasurer                                               Investment Manager and MSDW Services Company; Treasurer of
Two World Trade Center                                  the Morgan Stanley Dean Witter Funds, the TCW/DW Funds and
New York, New York                                      Discover Brokerage Index Series.
</TABLE>
 
- ------------------------
*Denotes Trustees who are "interested persons" of the Fund as defined by the
Investment Company Act.
 
    In addition, MITCHELL M. MERIN, President and Chief Operating Officer of
Asset Management of MSDW, President, Chief Executive Officer and Director of the
Investment Manager and MSDW Services Company, Chairman and Director of the
Distributor and the Transfer Agent, Executive Vice President and
 
                                       10
<PAGE>
Director of Dean Witter Reynolds, and Director of various MSDW subsidiaries,
ROBERT M. SCANLAN, Chief Operating Officer and Director of the Investment
Manager and MSDW Services Company, Executive Vice President of the Distributor
and the Transfer Agent and Director of the Transfer Agent, RONALD E. ROBISON,
Executive Vice President and Chief Administrative Officer of the Investment
Manager and MSDW Services Company, ROBERT S. GIAMBRONE, Senior Vice President of
the Investment Manager, MSDW Services Company, the Distributor and the Transfer
Agent and Director of the Transfer Agent, JOSEPH J. MCALINDEN, Executive Vice
President and Chief Investment Officer of the Investment Manager and Director of
the Transfer Agent, and PETER M. AVELAR, PAUL D. VANCE and JAMES F. WILLISON,
Senior Vice Presidents of the Investment Manager, are Vice Presidents of the
Fund.
 
    In addition, MARILYN K. CRANNEY and CARSTEN OTTO, First Vice Presidents and
Assistant General Counsels of the Investment Manager and MSDW Services Company,
FRANK BRUTTOMESSO, LOU ANNE D. MCINNIS and RUTH ROSSI, Vice Presidents and
Assistant General Counsels of the Investment Manager and MSDW Services Company,
and TODD LEBO, a staff attorney with the Investment Manager, are Assistant
Secretaries of the Fund.
 
    INDEPENDENT TRUSTEES AND THE COMMITTEES.  Law and regulation establish both
general guidelines and specific duties for the Independent Trustees. The Morgan
Stanley Dean Witter Funds seek as Independent Trustees individuals of
distinction and experience in business and finance, government service or
academia; these are people whose advice and counsel are in demand by others and
for whom there is often competition. To accept a position on the Funds' Boards,
such individuals may reject other attractive assignments because the Funds make
substantial demands on their time. Indeed, by serving on the Funds' Boards,
certain Trustees who would otherwise be qualified and in demand to serve on bank
boards would be prohibited by law from doing so. All of the Independent Trustees
serve as members of the Audit Committee. Three of them also serve as members of
the Derivatives Committee. In addition, three of the Trustees, including two
Independent Trustees, serve as members of the Insurance Committee.
 
    The Independent Trustees are charged with recommending to the full Board
approval of management, advisory and administration contracts, Rule 12b-1 plans
and distribution and underwriting agreements; continually reviewing Fund
performance; checking on the pricing of portfolio securities, brokerage
commissions, transfer agent costs and performance, and trading among Funds in
the same complex; and approving fidelity bond and related insurance coverage and
allocations, as well as other matters that arise from time to time. The
Independent Trustees are required to select and nominate individuals to fill any
Independent Trustee vacancy on the Board of any Fund that has a Rule 12b-1 plan
of distribution. Most of the Morgan Stanley Dean Witter Funds have a Rule 12b-1
plan.
 
    The Audit Committee is charged with recommending to the full Board the
engagement or discharge of the Fund's independent accountants; directing
investigations into matters within the scope of the independent accountants'
duties, including the power to retain outside specialists; reviewing with the
independent accountants the audit plan and results of the auditing engagement;
approving professional services provided by the independent accountants and
other accounting firms prior to the performance of the services; reviewing the
independence of the independent accountants; considering the range of audit and
non-audit fees; reviewing the adequacy of the Fund's system of internal
controls; and preparing and submitting Committee meeting minutes to the full
Board.
 
    The Board of each Fund has a Derivatives Committee to approve parameters for
and monitor the activities of the Fund with respect to derivative investments,
if any, made by the Fund.
 
    Finally, the Board of each Fund has formed an Insurance Committee to review
and monitor the insurance coverage maintained by the Fund.
 
    ADVANTAGES OF HAVING SAME INDIVIDUALS AS INDEPENDENT TRUSTEES FOR ALL MORGAN
STANLEY DEAN WITTER FUNDS.  The Independent Trustees and the Funds' management
believe that having the same Independent Trustees for each of the Morgan Stanley
Dean Witter Funds avoids the duplication of effort that would arise from having
different groups of individuals serving as Independent Trustees for each of
 
                                       11
<PAGE>
the Funds or even of sub-groups of Funds. They believe that having the same
individuals serve as Independent Trustees of all the Funds tends to increase
their knowledge and expertise regarding matters which affect the Fund complex
generally and enhances their ability to negotiate on behalf of each Fund with
the Fund's service providers. This arrangement also precludes the possibility of
separate groups of Independent Trustees arriving at conflicting decisions
regarding operations and management of the Funds and avoids the cost and
confusion that would likely ensue. Finally, having the same Independent Trustees
serve on all Fund Boards enhances the ability of each Fund to obtain, at modest
cost to each separate Fund, the services of Independent Trustees, of the
caliber, experience and business acumen of the individuals who serve as
Independent Trustees of the Morgan Stanley Dean Witter Funds.
 
    TRUSTEE AND OFFICER INDEMNIFICATION.  The Fund's Declaration of Trust
provides that no Trustee, officer, employee or agent of the Fund is liable to
the Fund or to a shareholder, nor is any Trustee, officer, employee or agent
liable to any third persons in connection with the affairs of the Fund, except
as such liability may arise from his/her or its own bad faith, willful
misfeasance, gross negligence or reckless disregard of his/her or its duties. It
also provides that all third persons shall look solely to the Fund property for
satisfaction of claims arising in connection with the affairs of the Fund. With
the exceptions stated, the Declaration of Trust provides that a Trustee,
officer, employee or agent is entitled to be indemnified against all liability
in connection with the affairs of the Fund.
 
C. COMPENSATION
 
    The Fund pays each Independent Trustee an annual fee of $800 plus a per
meeting fee of $50 for meetings of the Board of Trustees, the Independent
Trustees or Committees of the Board of Trustees attended by the Trustee (the
Fund pays the Chairman of the Audit Committee an additional annual fee of $750).
If a Board meeting and a meeting of the Independent Trustees or a Committee
meeting, or a meeting of the Independent Trustees and/or more than one Committee
meeting, take place on a single day, the Trustees are paid a single meeting fee
by the Fund. The Fund also reimburses such Trustees for travel and other
out-of-pocket expenses incurred by them in connection with attending such
meetings. Trustees and officers of the Fund who are or have been employed by the
Investment Manager or an affiliated company receive no compensation or expenses
reimbursed from the Fund for their services as Trustee. Mr. Haire currently
serves as Chairman of the Audit Committee. Prior to June 1, 1998, Mr. Haire also
served as Chairman of the Independent Trustees for which services the Fund paid
him an additional annual fee of $1,200.
 
    The following table illustrates the compensation that the Fund paid to its
Independent Trustees for the fiscal year ended January 31, 1999.
 
                               FUND COMPENSATION
 
<TABLE>
<CAPTION>
                                                                   AGGREGATE
                                                                 COMPENSATION
NAME OF INDEPENDENT TRUSTEE                                      FROM THE FUND
- --------------------------------------------------------------  ---------------
<S>                                                             <C>
Michael Bozic.................................................      $
Edwin J. Garn.................................................
John R. Haire.................................................
Wayne E. Hedien...............................................
Dr. Manuel H. Johnson.........................................
Michael E. Nugent.............................................
John L. Schroeder.............................................
</TABLE>
 
    The following table illustrates the compensation paid to the Fund's
Independent Trustees for the calendar year ended December 31, 1998 for services
to the 85 Morgan Stanley Dean Witter Funds and, in the case of Messrs. Haire,
Johnson, Nugent and Schroeder, the 11 TCW/DW Funds that were in operation at
December 31, 1998. Mr. Haire serves as Chairman of the Audit Committee of each
Morgan Stanley Dean Witter Fund and each TCW/DW Fund and, prior to June 1, 1998,
also served as Chairman of the Independent Directors or Trustees of those Funds.
With respect to Messrs. Haire, Johnson,
 
                                       12
<PAGE>
Nugent and Schroeder, the TCW/DW Funds are included solely because of a limited
exchange privilege between those Funds and five Morgan Stanley Dean Witter Money
Market Funds. No compensation was paid to the Fund's Independent Trustees by
Discover Brokerage Index Series for the calendar year ended December 31, 1998.
 
    CASH COMPENSATION FROM MORGAN STANLEY DEAN WITTER FUNDS AND TCW/DW FUNDS
 
<TABLE>
<CAPTION>
                                                                   FOR SERVICE AS
                                                                    CHAIRMAN OF                     TOTAL CASH
                                                                    INDEPENDENT     FOR SERVICE    COMPENSATION
                               FOR SERVICE                           DIRECTORS/          AS        FOR SERVICES
                              AS DIRECTOR OR                        TRUSTEES AND    CHAIRMAN OF         TO
                               TRUSTEE AND                             AUDIT        INDEPENDENT      85 MORGAN
                             COMMITTEE MEMBER    FOR SERVICE AS    COMMITTEES OF    TRUSTEES AND      STANLEY
                               OF 85 MORGAN       TRUSTEE AND        85 MORGAN         AUDIT        DEAN WITTER
                                 STANLEY        COMMITTEE MEMBER      STANLEY        COMMITTEES      FUNDS AND
NAME OF                        DEAN WITTER        OF 11 TCW/DW      DEAN WITTER     OF 11 TCW/DW     11 TCW/DW
INDEPENDENT TRUSTEE               FUNDS              FUNDS             FUNDS           FUNDS           FUNDS
- ---------------------------  ----------------   ----------------   --------------   ------------   -------------
<S>                          <C>                <C>                <C>              <C>            <C>
Michael Bozic..............      $120,150           --                 --              --            $120,150
Edwin J. Garn..............       132,450           --                 --              --             132,450
John R. Haire..............       136,450           $66,931           $101,338        $14,725         319,444
Wayne E. Hedien............       132,350           --                 --              --             132,350
Dr. Manuel H. Johnson......       128,400            62,331            --              --             190,731
Michael E. Nugent..........       132,450            62,131            --              --             194,581
John L. Schroeder..........       132,450            64,731            --              --             197,181
</TABLE>
 
    As of the date of this STATEMENT OF ADDITIONAL INFORMATION, 55 of the Morgan
Stanley Dean Witter Funds, including the Fund, have adopted a retirement program
under which an Independent Trustee who retires after serving for at least five
years (or such lesser period as may be determined by the Board) as an
Independent Director or Trustee of any Morgan Stanley Dean Witter Fund that has
adopted the retirement program (each such Fund referred to as an "Adopting Fund"
and each such Trustee referred to as an "Eligible Trustee") is entitled to
retirement payments upon reaching the eligible retirement age (normally, after
attaining age 72). Annual payments are based upon length of service.
 
    Currently, upon retirement, each Eligible Trustee is entitled to receive
from the Adopting Fund, commencing as of his or her retirement date and
continuing for the remainder of his or her life, an annual retirement benefit
(the "Regular Benefit") equal to 29.41% of his or her Eligible Compensation plus
0.4901667% of such Eligible Compensation for each full month of service as an
Independent Director or Trustee of any Adopting Fund in excess of five years up
to a maximum of 58.82% after ten years of service. The foregoing percentages may
be changed by the Board.(1) "Eligible Compensation" is one-fifth of the total
compensation earned by such Eligible Trustee for service to the Adopting Fund in
the five year period prior to the date of the Eligible Trustee's retirement.
Benefits under the retirement program are not secured or funded by the Adopting
Funds.
 
    The following table illustrates the retirement benefits accrued to the
Fund's Independent Trustees by the Fund for the fiscal year ended January 31,
1999 and by the 55 Morgan Stanley Dean Witter Funds (including the Fund) for the
year ended December 31, 1998, and the estimated retirement benefits for the
Independent Trustees, to commence upon their retirement, from the Fund as of
January 31, 1999 and from the 55 Morgan Stanley Dean Witter Funds as of December
31, 1998.
 
- ------------------------
(1)  An Eligible Trustee may elect alternative payments of his or her retirement
     benefits based upon the combined life expectancy of the Eligible Trustee
     and his or her spouse on the date of such Eligible Trustee's retirement. In
     addition, the Eligible Trustee may elect that the surviving spouse's
     periodic payment of benefits will be equal to a lower percentage of the
     periodic amount when both spouses were alive. The amount estimated to be
     payable under this method, through the remainder of the later of the lives
     of the Eligible Trustee and spouse, will be the actuarial equivalent of the
     Regular Benefit.
 
                                       13
<PAGE>
   RETIREMENT BENEFITS FROM THE FUND AND ALL MORGAN STANLEY DEAN WITTER FUNDS
 
<TABLE>
<CAPTION>
                                         FOR ALL ADOPTING FUNDS         RETIREMENT BENEFITS       ESTIMATED ANNUAL
                                    ---------------------------------   ACCRUED AS EXPENSES           BENEFITS
                                       ESTIMATED                                                 UPON RETIREMENT(2)
                                    CREDITED YEARS       ESTIMATED      --------------------     -------------------
                                     OF SERVICE AT     PERCENTAGE OF               BY ALL          FROM     FROM ALL
                                      RETIREMENT         ELIGIBLE       BY THE    ADOPTING         THE      ADOPTING
NAME OF INDEPENDENT TRUSTEE          (MAXIMUM 10)      COMPENSATION      FUND       FUNDS          FUND      FUNDS
- ----------------------------------  ---------------   ---------------   ------   -----------     --------   --------
<S>                                 <C>               <C>               <C>      <C>             <C>        <C>
Michael Bozic.....................          10             58.82%       $        $                $         $
Edwin J. Garn.....................          10             58.82
John R. Haire.....................          10             58.82                       (3)
Wayne E. Hedien...................           9             50.00
Dr. Manuel H. Johnson.............          10             58.82
Michael E. Nugent.................          10             58.82
John L. Schroeder.................           8             49.02
</TABLE>
 
- ------------------------
(2)  Based on current levels of compensation. Amount of annual benefits also
     varies depending on the Trustee's elections described in Footnote (1)
     above.
(3)  This number reflects the effect of the extension of Mr. Haire's term as
     Director or Trustee until May 1, 1999.
 
IV. CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES
- --------------------------------------------------------------------------------
 
    [The following owned 5% or more...]
 
    As of the date of this STATEMENT OF ADDITIONAL INFORMATION, the aggregate
number of shares of beneficial interest of the Fund owned by the Fund's officers
and Trustees as a group was less than 1% of the Fund's shares of beneficial
interest outstanding.
 
V. INVESTMENT MANAGEMENT AND OTHER SERVICES
- --------------------------------------------------------------------------------
 
A. INVESTMENT MANAGER
 
    The Investment Manager to the Fund is Morgan Stanley Dean Witter Advisors
Inc., a Delaware corporation, whose address is Two World Trade Center, New York,
New York 10048. The Investment Manager is a wholly-owned subsidiary of MSDW, a
Delaware corporation. MSDW is a preeminent global financial services firm that
maintains leading market positions in each of its three primary businesses:
securities, asset management and credit services.
 
    Pursuant to an Investment Management Agreement (the "Management Agreement")
with the Investment Manager, the Fund has retained the Investment Manager to
provide administrative services and manage the investment of the Fund's assets,
including the placing of orders for the purchase and sale of portfolio
securities. The Fund pays the Investment Manager monthly compensation calculated
daily by applying the following annual rates to the net assets of the Fund,
determined as of the close of business on every business day: 0.50% of the
portion of the daily net assets not exceeding $500 million; 0.425% of the
portion of the daily net assets exceeding $500 million but not exceeding $750
million; 0.375% of the portion of the daily net assets exceeding $750 million
but not exceeding $1 billion; 0.35% of the portion of the daily net assets
exceeding $1 billion but not exceeding $1.5 billion; 0.325% of the portion of
the daily net assets exceeding $1.5 billion but not exceeding $2 billion; 0.30%
of the portion of the daily net assets exceeding $2 billion but not exceeding
$2.5 billion; 0.275% of the portion of the daily net assets exceeding $2.5
billion but not exceeding $3 billion; and 0.25% of the portion of the daily net
assets exceeding $3 billion.
 
    For the fiscal years ended January 31, 1997, 1998 and 1999, the Investment
Manager accrued total compensation under the Management Agreement in the amounts
of $4,190,754, $4,108,339 and $      , respectively.
 
                                       14
<PAGE>
    The Investment Manager has retained its wholly-owned subsidiary, MSDW
Services Company, to perform administrative services for the Fund.
 
B. PRINCIPAL UNDERWRITER
 
    The Fund's principal underwriter is the Distributor (which has the same
address as the Investment Manager). In this capacity, the Fund's shares are
distributed by the Distributor. The Distributor has entered into a selected
dealer agreement with Dean Witter Reynolds, which through its own sales
organization sells shares of the Fund. In addition, the Distributor may enter
into similar agreements with other selected broker-dealers. The Distributor, a
Delaware corporation, is a wholly-owned subsidiary of MSDW.
 
    The Trustees, including a majority of the Independent Trustees, approved the
current Distribution Agreement appointing the Distributor as exclusive
distributor of the Fund's shares and providing for the Distributor to bear
distribution expenses not borne by the Fund. By its terms, the Distribution
Agreement had an initial term ending April 30, 1998 and will remain in effect
from year to year thereafter if approved by the Trustees. At their meeting held
on April 30, 1998, the Trustees of the Fund, including a majority of the
Independent Trustees, approved the continuation of the Distribution Agreement
until April 30, 1999.
 
    The Fund and the Distributor have agreed to indemnify each other against
certain liabilities, including liabilities under the Securities Act. Under the
Distribution Agreement, the Distributor uses its best efforts in rendering
services to the Fund, but in the absence of willful misfeasance, bad faith,
gross negligence or reckless disregard of its obligations, the Distributor is
not liable to the Fund or any of its shareholders for any error of judgment or
mistake of law or for any act or omission or for any losses sustained by the
Fund or its shareholders.
 
C. SERVICES PROVIDED BY THE INVESTMENT MANAGER AND FUND EXPENSES PAID BY THIRD
PARTIES
 
    The Investment Manager manages the investment of the Fund's assets,
including the placing of orders for the purchase and sale of portfolio
securities. The Investment Manager obtains and evaluates the information and
advice relating to the economy, securities markets, and specific securities as
it considers necessary or useful to continuously manage the assets of the Fund
in a manner consistent with its investment objective.
 
    Under the terms of the Management Agreement, in addition to managing the
Fund's investments, the Investment Manager maintains certain of the Fund's books
and records and furnishes, at its own expense, the office space, facilities,
equipment, clerical help, bookkeeping and certain legal services as the Fund may
reasonably require in the conduct of its business, including the preparation of
prospectuses, proxy statements and reports required to be filed with federal and
state securities commissions (except insofar as the participation or assistance
of independent accountants and attorneys is, in the opinion of the Investment
Manager, necessary or desirable). In addition, the Investment Manager pays the
salaries of all personnel, including officers of the Fund, who are employees of
the Investment Manager. The Investment Manager also bears the cost of telephone
service, heat, light, power and other utilities provided to the Fund.
 
    Expenses not expressly assumed by the Investment Manager under the
Management Agreement or by the Distributor, will be paid by the Fund. These
expenses include, but are not limited to: expenses of the Plan of Distribution
pursuant to Rule 12b-1; charges and expenses of any registrar, custodian, stock
transfer and dividend disbursing agent; brokerage commissions; taxes; engraving
and printing share certificates; registration costs of the Fund and its shares
under federal and state securities laws; the cost and expense of printing,
including typesetting, and distributing prospectuses of the Fund and supplements
thereto to the Fund's shareholders; all expenses of shareholders' and Trustees'
meetings and of preparing, printing and mailing of proxy statements and reports
to shareholders; fees and travel expenses of Trustees or members of any advisory
board or committee who are not employees of the Investment Manager or any
corporate affiliate of the Investment Manager; all expenses incident to any
dividend, withdrawal or redemption options; charges and expenses of any outside
service used for pricing of the Fund's shares; fees and expenses of legal
counsel, including counsel to the Trustees who
 
                                       15
<PAGE>
are not interested persons of the Fund or of the Investment Manager (not
including compensation or expenses of attorneys who are employees of the
Investment Manager); fees and expenses of the Fund's independent accountants;
membership dues of industry associations; interest on Fund borrowings; postage;
insurance premiums on property or personnel (including officers and Trustees) of
the Fund which inure to its benefit; extraordinary expenses (including, but not
limited to, legal claims and liabilities and litigation costs and any
indemnification relating thereto); and all other costs of the Fund's operation.
 
    The Management Agreement provides that in the absence of willful
misfeasance, bad faith, gross negligence or reckless disregard of its
obligations thereunder, the Investment Manager is not liable to the Fund or any
of its investors for any act or omission by the Investment Manager or for any
losses sustained by the Fund or its investors.
 
    The Management Agreement has an initial term ending April 30, 1999 and will
remain in effect from year to year thereafter, provided continuance of the
Management Agreement is approved at least annually by the vote of the holders of
a majority, as defined in the Investment Company Act, of the outstanding shares
of the Fund, or by the Trustees; provided that in either event such continuance
is approved annually by the vote of a majority of the Trustees.
 
D. RULE 12B-1 PLAN
 
    In accordance with a Plan of Distribution pursuant to Rule 12b-1 under the
Investment Company Act between the Fund and the Distributor, the Distributor
provides certain services in connection with the promotion of sales of Fund
shares (the "Plan").
 
    The Plan provides that the Distributor bears the expense of all promotional
and distribution related activities on behalf of the Fund, except for expenses
that the Trustees determine to reimburse, as described below. The following
activities and services may be provided by the Distributor under the Plan: (1)
compensation to and expenses of Dean Witter Reynolds' and other selected
Broker-Dealers' Financial Advisors and other employees, including overhead and
telephone expenses; (2) sales incentives and bonuses to sales representatives
and to marketing personnel in connection with promoting sales of the Fund's
shares; (3) expenses incurred in connection with promoting sales of the Fund's
shares; (4) preparing and distributing sales literature; and (5) providing
advertising and promotional activities, including direct mail solicitation and
television, radio, newspaper, magazine and other media advertisements.
 
    Dean Witter Reynolds Financial Advisors are paid an annual residual
commission, currently a residual of up to 0.10% of the current value of the
respective accounts for which they are the Financial Advisors of record. The
residual is a charge which reflects residual commissions paid by Dean Witter
Reynolds to its Financial Advisors and Dean Witter Reynolds' expenses associated
with the servicing of shareholders' accounts, including the expenses of
operating Dean Witter Reynolds' branch offices in connection with the servicing
of shareholders' accounts, which expenses include lease costs, the salaries and
employee benefits of operations and sales support personnel, utility costs,
communications costs and the costs of stationery and supplies and other expenses
relating to branch office serving of shareholder accounts.
 
    The Fund is authorized to reimburse specific expenses incurred or to be
incurred in promoting the distribution of the Fund's shares. Reimbursement is
made through payments at the end of each month. The amount of each monthly
payment may in no event exceed an amount equal to a payment at the annual rate
of 0.15 of 1% of the Fund's average daily net assets during the month. No
interest or other financing charges will be incurred for which reimbursement
payments under the Plan will be made. In addition, no interest charges, if any,
incurred on any distribution expense incurred by the Distributor or other
selected dealers pursuant to the Plan, will be reimbursable under the Plan. In
the case of all expenses other than expenses representing a residual to
Financial Advisors, such amounts shall be determined at the beginning of each
calendar quarter by the Trustees, including a majority of the Independent 12b-1
Trustees. Expenses representing a residual to Financial Advisors may be
reimbursed without prior determination. In the event that the Distributor
proposes that monies shall be reimbursed for other than such expenses, then in
making quarterly determinations of the amounts that may be
 
                                       16
<PAGE>
expended by the Fund, the Investment Manager provides and the Trustees review a
quarterly budget of projected incremental distribution expenses to be incurred
on behalf of the Fund, together with a report explaining the purposes and
anticipated benefits of incurring such expenses. The Trustees determine which
particular expenses, and the portions thereof, that may be borne by the Fund,
and in making such a determination shall consider the scope of the Distributor's
commitment to promoting the distribution of the Fund's shares.
 
    The Fund reimbursed $      to the Distributor pursuant to the Plan which
amounted to 0.  of 1% of the Fund's average daily net assets for the fiscal year
ended January 31, 1999. Based upon the total amounts spent by the Distributor
during the period, it is estimated that the amount paid by the Fund to the
Distributor for distribution was spent in approximately the following ways: (i)
advertising -- $      ; (ii) printing and mailing PROSPECTUSES to other than
current shareholders -- $      ; (iii) compensation to underwriters -- $      ;
(iv) compensation to dealers --$      ; (v) compensation to sales personnel --
$      ; and (vi) other, which accrued for expenses relating to compensation of
sales personnel and other miscellaneous expenses -- $      . No payments under
the Plan were made for overhead, interest, carrying or other financing charges.
 
    Under the Plan, the Distributor uses its best efforts in rendering services
to the Fund, but in the absence of willful misfeasance, bad faith, gross
negligence or reckless disregard of its obligations, the Distributor is not
liable to the Fund or any of its shareholders for any error of judgment or
mistake of law or for any act or omission or for any losses sustained by the
Fund or its shareholders.
 
    Under the Plan, the Distributor provides the Fund, for review by the
Trustees, and the Trustees review, promptly after the end of each calendar
quarter, a written report regarding the incremental distribution expenses
incurred on behalf of the Fund during such calendar quarter, which report
includes (1) an itemization of the types of expenses and the purposes therefore;
(2) the amounts of such expenses; and (3) a description of the benefits derived
by the Fund. In the Trustees' quarterly review of the Plan they consider its
continued appropriateness and the level of compensation provided therein.
 
    No interested person of the Fund nor any Independent Trustee has any direct
financial interest in the operation of the Plan except to the extent that the
Distributor, the Investment Manager, Dean Witter Reynolds, MSDW Services Company
or certain of their employees may be deemed to have such an interest as a result
of benefits derived from the successful operation of the Plan or as a result of
receiving a portion of the amounts expended thereunder by the Fund.
 
    The most recent continuance of the Plan for one year, until April 30, 1999,
was approved by the Trustees, including a majority of the Independent Trustees,
at a Board meeting held on April 30, 1998.
 
    Prior to approving the continuation of the Plan, the Trustees requested and
received from the Distributor and reviewed all the information which they deemed
necessary to arrive at an informed determination. In making their determination
to continue the Plan, the Trustees considered: (1) the Fund's experience under
the Plan and whether such experience indicates that the Plan is operating as
anticipated; (2) the benefits the Fund had obtained, was obtaining and would be
likely to obtain under the Plan, including that: (a) the Plan is essential in
order to implement the Fund's method and to enable the Fund to continue to grow
and avoid a pattern of net redemptions which, in turn, are essential for
effective investment management; and (b) without the reimbursement of
distribution and account maintenance expenses of Dean Witter Reynolds' branch
offices made possible by the 12b-1 fees, Dean Witter Reynolds could not
establish and maintain an effective system for distribution, servicing of Fund
shareholders and maintenance of shareholder accounts; and (3) what services had
been provided and were continuing to be provided under the Plan to the Fund and
its shareholders. Based upon their review, the Trustees, including each of the
Independent Trustees, determined that continuation of the Plan would be in the
best interest of the Fund and would have a reasonable likelihood of continuing
to benefit the Fund and its shareholders. In the Trustees' quarterly review of
the Plan, they will consider its continued appropriateness and the level of
compensation provided therein.
 
                                       17
<PAGE>
    The Plan may not be amended to increase materially the amount to be spent
for the services described therein without approval by the shareholders of the
Fund, and all material amendments to the Plan must also be approved by the
Trustees in the manner described above. The Plan may be terminated at any time,
without payment of any penalty, by vote of a majority of the Independent
Trustees or by a vote of a majority of the outstanding voting securities of the
Fund (as defined in the Investment Company Act) on not more than thirty days'
written notice to any other party to the Plan. So long as the Plan is in effect,
the election and nomination of Independent Trustees shall be committed to the
discretion of the Independent Trustees.
 
E. OTHER SERVICE PROVIDERS
 
(1) TRANSFER AGENT/DIVIDEND-PAYING AGENT
 
    The Transfer Agent is the transfer agent for the Fund's shares and the
Dividend Disbursing Agent for payment of dividends and distributions on Fund
shares and Agent for shareholders under various investment plans. The principal
business address of the Transfer Agent is Harborside Financial Center, Plaza
Two, Jersey City, New Jersey 07311.
 
(2) CUSTODIAN AND INDEPENDENT ACCOUNTANTS
 
    The Bank of New York, 90 Washington Street, New York, New York 10286 is the
Custodian for the Fund's assets. Any of the Fund's cash balances with the
Custodian in excess of $100,000 are unprotected by federal deposit insurance.
These balances may, at times, be substantial.
 
                  serves as the independent accountants of the Fund. The
independent accountants are responsible for auditing the annual financial
statements of the Fund.
 
(3) AFFILIATED PERSONS
 
    The Transfer Agent is an affiliate of the Investment Manager, and of the
Distributor. As Transfer Agent and Dividend Disbursing Agent, the Transfer
Agent's responsibilities include maintaining shareholder accounts, disbursing
cash dividends and reinvesting dividends, processing account registration
changes, handling purchase and redemption transactions, mailing prospectuses and
reports, mailing and tabulating proxies, processing share certificate
transactions, and maintaining shareholder records and lists. For these services,
the Transfer Agent receives a per shareholder account fee from the Fund.
 
VI. BROKERAGE ALLOCATION AND OTHER PRACTICES
- --------------------------------------------------------------------------------
 
A. BROKERAGE TRANSACTIONS
 
    Subject to the general supervision of the Trustees, the Investment Manager
is responsible for decisions to buy and sell securities for the Fund, the
selection of brokers and dealers to effect the transactions, and the negotiation
of brokerage commissions, if any. Purchases and sales of portfolio securities
are normally transacted through issuers, underwriters or major dealers in U.S.
Government securities acting as principals. Such transactions are made on a net
basis and do not involve payment of brokerage commissions. The cost of
securities purchased from an underwriter usually includes a commission paid by
the issuer to the underwriters; transactions with dealers normally reflect the
spread between bid and asked prices.
 
    During the fiscal years ended January 31, 1997, 1998 and 1999, the Fund paid
no such brokerage commissions or concessions.
 
B. COMMISSIONS
 
    Pursuant to an order of the SEC, the Fund may effect principal transactions
in certain money market instruments with Dean Witter Reynolds. The Fund will
limit its transactions with Dean Witter Reynolds to U.S. Government and
Government Agency Securities. The transactions will be effected with Dean Witter
Reynolds only when the price available from Dean Witter Reynolds is better than
that available from other dealers.
 
                                       18
<PAGE>
    During the fiscal years ended January 31, 1997, 1998 and 1999, the Fund did
not effect any principal transactions with Dean Witter Reynolds.
 
    Consistent with the policy described above, brokerage transactions in
securities listed on exchanges or admitted to unlisted trading privileges may be
effected through Dean Witter Reynolds, Morgan Stanley & Co. and other affiliated
brokers and dealers. In order for an affiliated broker or dealer to effect any
portfolio transactions on an exchange for the Fund, the commissions, fees or
other remuneration received by the affiliated broker or dealer must be
reasonable and fair compared to the commissions, fees or other remuneration paid
to other brokers in connection with comparable transactions involving similar
securities being purchased or sold on an exchange during a comparable period of
time. This standard would allow the affiliated broker or dealer to receive no
more than the remuneration which would be expected to be received by an
unaffiliated broker in a commensurate arm's-length transaction. Furthermore, the
Trustees, including the Independent Trustees, have adopted procedures which are
reasonably designed to provide that any commissions, fees or other remuneration
paid to an affiliated broker or dealer are consistent with the foregoing
standard. The Fund does not reduce the management fee it pays to the Investment
Manager by any amount of the brokerage commissions it may pay to an affiliated
broker or dealer.
 
    During the fiscal years ended January 31, 1997, 1998 and 1999, the Fund paid
no brokerage commissions to an affiliated broker or dealer.
 
C. BROKERAGE SELECTION
 
    The policy of the Fund regarding purchases and sales of securities for its
portfolio is that primary consideration will be given to obtaining the most
favorable prices and efficient executions of transactions.
 
    In seeking to implement the Fund's policies, the Investment Manager effects
transactions with those brokers and dealers who the Investment Manager believes
provide the most favorable prices and are capable of providing efficient
executions. If the Investment Manager believes the prices and executions are
obtainable from more than one broker or dealer, it may give consideration to
placing portfolio transactions with those brokers and dealers who also furnish
research and other services to the Fund or the Investment Manager. The services
may include, but are not limited to, any one or more of the following:
information as to the availability of securities for purchase or sale;
statistical or factual information or opinions pertaining to investment; wire
services; and appraisals or evaluations of portfolio securities.
 
    The information and services received by the Investment Manager from brokers
and dealers may be of benefit to the Investment Manager in the management of
accounts of some of its other clients and may not in all cases benefit the Fund
directly. While the receipt of such information and services is useful in
varying degrees and would generally reduce the amount of research or services
otherwise performed by the Investment Manager and thereby reduce its expenses,
it is of indeterminable value and the Fund does not reduce the management fee it
pays to the Investment Manager by any amount that may be attributable to the
value of such services.
 
    Subject to the principle of obtaining best price and execution, the
Investment Manager may consider a broker-dealer's sales of shares of the Fund as
a factor in selecting from among those broker-dealers qualified to provide
comparable prices and execution on the Fund's portfolio transactions. The Fund
does not, however, require a broker-dealer to sell shares of the Fund in order
for it to be considered to execute portfolio transactions, and will not enter
into any arrangement whereby a specific amount or percentage of the Fund's
transactions will be directed to a broker which sells shares of the Fund to
customers. The Trustees review, periodically, the allocation of brokerage orders
to monitor the operation of these policies.
 
    The Investment Manager currently serves as investment manager to a number of
clients, including other investment companies, and may in the future act as
investment manager or advisor to others. It is the practice of the Investment
Manager to cause purchase and sale transactions to be allocated among
 
                                       19
<PAGE>
the Fund and others whose assets it manages in such manner as it deems
equitable. In making such allocations among the Fund and other client accounts,
various factors may be considered, including the respective investment
objectives, the relative size of portfolio holdings of the same or comparable
securities, the availability of cash for investment, the size of investment
commitments generally held and the opinions of the persons responsible for
managing the portfolios of the Fund and other client accounts. In the case of
certain initial and secondary public offerings, the Investment Manager utilizes
a pro rata allocation process based on the size of the Morgan Stanley Dean
Witter Funds involved and the number of shares available from the public
offering.
 
D. DIRECTED BROKERAGE
 
    During the fiscal year ended January 31, 1999, the Fund did not pay any
brokerage commissions to brokers because of research services provided.
 
E. REGULAR BROKER-DEALERS
 
    During the fiscal year ended January 31, 1999, the Fund did not purchase
securities issued by brokers or dealers that were among the ten brokers or the
ten dealers which executed transactions for or with the Fund in the largest
dollar amounts during the year. At January 31, 1999, the Fund did not own any
securities issued by any of such issuers.
 
VII. CAPITAL STOCK AND OTHER SECURITIES
- --------------------------------------------------------------------------------
 
    The shareholders of the Fund are entitled to a full vote for each full share
of beneficial interest held. The Fund is authorized to issue an unlimited number
of shares of beneficial interest. All shares of beneficial interest of the Fund
are of $0.01 par value and are equal as to earnings, assets and voting
privileges.
 
    The Fund's Declaration of Trust permits the Trustees to authorize the
creation of additional series of shares (the proceeds of which would be invested
in separate, independently managed portfolios) and additional Classes of shares
within any series. The Trustees have not presently authorized any such
additional series or Classes of shares other than as set forth in the
PROSPECTUS.
 
    The Fund is not required to hold annual meetings of shareholders and in
ordinary circumstances the Fund does not intend to hold such meetings. The
Trustees may call special meetings of shareholders for action by shareholder
vote as may be required by the Investment Company Act or the Declaration of
Trust. Under certain circumstances, the Trustees may be removed by action of the
Trustees or by the shareholders.
 
    Under Massachusetts law, shareholders of a business trust may, under certain
limited circumstances, be held personally liable as partners for the obligations
of the Fund. However, the Declaration of Trust contains an express disclaimer of
shareholder liability for acts or obligations of the Fund, requires that notice
of such Fund obligations include such disclaimer, and provides for
indemnification out of the Fund's property for any shareholder held personally
liable for the obligations of the Fund. Thus, the risk of a shareholder
incurring financial loss on account of shareholder liability is limited to
circumstances in which the Fund itself would be unable to meet its obligations.
Given the above limitations on shareholder personal liability, and the nature of
the Fund's assets and operations, the possibility of the Fund being unable to
meet its obligations is remote and thus, in the opinion of Massachusetts counsel
to the Fund, the risk to Fund shareholders of personal liability is remote.
 
    All of the Trustees have been elected by the shareholders of the Fund, most
recently at a Special Meeting of Shareholders held on May 21, 1997. The Trustees
themselves have the power to alter the number and the terms of office of the
Trustees (as provided for in the Declaration of Trust), and they may at any time
lengthen or shorten their own terms or make their terms of unlimited duration
and appoint their own successors, provided that always at least a majority of
the Trustees has been elected by the shareholders of the Fund.
 
                                       20
<PAGE>
VIII. PURCHASE, REDEMPTION AND PRICING OF SHARES
- --------------------------------------------------------------------------------
 
A. PURCHASE/REDEMPTION OF SHARES
 
    Information concerning how Fund shares are offered to the public (and how
they are redeemed and exchanged) is provided in the Fund's PROSPECTUS.
 
    TRANSFER AGENT AS AGENT.  With respect to the redemption or repurchase of
Fund shares, the application of proceeds to the purchase of new shares in the
Fund or any other Morgan Stanley Dean Witter Funds and the general
administration of the exchange privilege, the Transfer Agent acts as agent for
the Distributor and for the shareholder's authorized broker-dealer, if any, in
the performance of such functions. With respect to exchanges, redemptions or
repurchases, the Transfer Agent shall be liable for its own negligence and not
for the default or negligence of its correspondents or for losses in transit.
The Fund shall not be liable for any default or negligence of the Transfer
Agent, the Distributor or any authorized broker-dealer.
 
    The Distributor and any authorized broker-dealer have appointed the Transfer
Agent to act as their agent in connection with the application of proceeds of
any redemption of Fund shares to the purchase of shares of any other Morgan
Stanley Dean Witter Fund and the general administration of the exchange
privilege. No commission or discounts will be paid to the Distributor or any
authorized broker-dealer for any transaction pursuant to the exchange privilege.
 
    REDEMPTIONS.  A check drawn by a shareholder against his or her account in
the Fund constitutes a request for redemption of a number of shares sufficient
to provide proceeds equal to the amount of the check. Payment of the proceeds
will normally be made on the next business day after receipt by the Transfer
Agent of the check in proper form. If a check is presented for payment to the
Transfer Agent by a shareholder or payee in person, the Transfer Agent will make
payment by means of a check drawn on the Fund's account or, in the case of a
shareholder payee, to the shareholder's predesignated bank account, but will not
make payment in cash.
 
B. OFFERING PRICE
 
    The price of Fund shares, called "net asset value," is based on the value of
the Fund's portfolio securities.
 
    The Fund utilizes the amortized cost method in valuing its portfolio
securities for purposes of determining the net asset value of its shares. The
Fund utilizes the amortized cost method in valuing its portfolio securities even
though the portfolio securities may increase or decrease in market value,
generally in connection with changes in interest rates. The amortized cost
method of valuation involves valuing a security at its cost at the time of
purchase adjusted by a constant amortization to maturity of any discount or
premium, regardless of the impact of fluctuating interest rates on the market
value of the instrument. While this method provides certainty in valuation, it
may result in periods during which value, as determined by amortized cost, is
higher or lower than the price the Fund would receive if it sold the investment.
During such periods, the yield to investors in the Fund may differ somewhat from
that obtained in a similar company which uses market-to-market values for all of
its portfolio securities. For example, if the use of amortized cost resulted in
a lower (higher) aggregate portfolio value on a particular day, a prospective
investor in the Fund would be able to obtain a somewhat higher (lower) yield
than would result from investment in such a similar company and existing
investors would receive less (more) investment income. The purpose of this
method of calculation is to facilitate the maintenance of a constant net asset
value per share of $1.00.
 
    The use of the amortized cost method to value the portfolio securities of
the Fund and the maintenance of the per share net asset value of $1.00 is
permitted pursuant to Rule 2a-7 of the Act (the "Rule") and is conditioned on
its compliance with various conditions contained in the Rule including: (a) the
Trustees are obligated, as a particular responsibility within the overall duty
of care owed to the Fund's shareholders, to establish procedures reasonably
designed, taking into account current market conditions and the Fund's
investment objectives, to stabilize the net asset value per share as computed
for the purpose of distribution and redemption at $1.00 per share; (b) the
procedures include (i) calculation, at
 
                                       21
<PAGE>
such intervals as the Trustees determine are appropriate and as are reasonable
in light of current market conditions, of the deviation, if any, between net
asset value per share using amortized cost to value portfolio securities and net
asset value per share based upon available market quotations with respect to
such portfolio securities; (ii) periodic review by the Trustees of the amount of
deviation as well as methods used to calculate it; and (iii) maintenance of
written records of the procedures, and the Trustees' considerations made
pursuant to them and any actions taken upon such consideration; (c) the Trustees
should consider what steps should be taken, if any, in the event of a difference
of more than 1/2 of 1% between the two methods of valuation; and (d) the
Trustees should take such action as they deem appropriate (such as shortening
the average portfolio maturity, realizing gains or losses, withholding dividends
or, as provided by the Declaration of Trust, reducing the number of outstanding
shares of the Fund) to eliminate or reduce to the extent reasonably practicable
material dilution or other unfair results to investors or existing shareholders
which might arise from differences between the two method of valuation.
 
    Generally, for purposes of the procedures adopted under the Rule, the
maturity of a portfolio security is deemed to be the period remaining
(calculated from the trade date or such other date on which the Fund's interest
in the instrument is subject to market action) until the date on which in
accordance with the terms of the security the principal amount must
unconditionally be paid, or in the case of a security called for redemption, the
date on which the redemption payment must be made.
 
    A variable rate security that is subject to a demand feature is deemed to
have a maturity equal to the period remaining until the principal amount can be
recovered through demand. A floating rate security that is subject to a demand
feature is deemed to have a maturity equal to the period remaining until the
principal amount can be recovered through demand.
 
    An "NRSRO" is a nationally recognized statistical rating organization. The
term "Requisite NRSROs" means (i) any two NRSROs that have issued a rating with
respect to a security or class of debt obligations of an issuer, or (ii) if only
one NRSRO has issued a rating with respect to such security or issuer at the
time a fund purchases or rolls over the security, that NRSRO.
 
    An Eligible Security is generally defined in the Rule to mean (i) a rated
security with a remaining maturity of 397 calendar days or less that has
received a rating from the Requisite NRSROs in one of the two highest short-term
rating categories (within which there may be sub-categories or gradations
indicating relative standing); or (ii) An Unrated Security that is of comparable
quality to a security meeting the requirements of (1) above, as determined by
Trustees; (iii) In addition, in the case of a security that is subject to a
Demand Feature or Guarantee: (A) The Guarantee has received a rating from an
NRSRO or the Guarantee is issued by a guarantor that has received a rating from
an NRSRO with respect to a class of debt obligations (or any debt obligation
within that class) that is comparable in priority and security to the Guarantee,
unless: (1) the Guarantee is issued by a person that directly or indirectly,
controls, is controlled by or is under a common control with the issuer of the
security subject to the Guarantee (other than a sponsor or a Special Purpose
Entity with respect to an Asset Backed Security: (2) the security subject to the
Guarantee is a repurchase agreement that is Collateralized Fully; or (3) the
Guarantee itself is a Government Security and (B) the issuer of the Demand
Feature, or another institution, has undertaken promptly to notify the holder of
the security in the event the Demand Feature or Guarantee is substituted with
another Demand Feature or Guarantee (if such substitution is permissible under
the terms of the Demand Feature or Guarantee). The Fund will limit its
investments to securities that meet the requirements for Eligible Securities.
 
    As permitted by the Rule, the Trustees have delegated to the Fund's
Investment Manager the authority to determine which securities present minimal
credit risks and which unrated securities are comparable in quality to rated
securities.
 
    Also, as required by the Rule, the Fund will limit its investments in
securities, other than Government securities, so that, at the time of purchase:
(a) except as further limited in (b) below with regard to certain securities, no
more than 5% of its total assets will be invested in the securities of any one
issuer; and (b) with respect to Eligible Securities that have received a rating
in less than the highest category by any one
 
                                       22
<PAGE>
of the NRSROs whose ratings are used to qualify the security as an Eligible
Security, or that have been determined to be of comparable quality: (i) no more
than 5% in the aggregate of the Fund's total assets in all such securities, and
(ii) no more than the greater of 1% of total assets, or $1 million, in the
securities on any one issuer.
 
    The Rule further requires that the Fund limit its investments to U.S.
dollar-denominated instruments which the Trustees determine present minimal
credit risks and which are Eligible Securities. The Rule also requires the Fund
to maintain a dollar-weighted average portfolio maturity (not more than 90 days)
appropriate to its objective of maintaining a stable net asset value of $1.00
per share and precludes the purchase of any instrument with a remaining maturity
of more than 397 days. Should the disposition of a portfolio security result in
a dollar-weighted average portfolio maturity of more than 90 days, the Fund will
invest its available cash in such a manner as to reduce such maturity to 90 days
or less a soon as is reasonably practicable.
 
    If the Trustees determine that it is no longer in the best interests of the
Fund and its shareholders to maintain a stable price of $1 per share or if the
Trustees believe that maintaining such price no longer reflects a market-based
net asset value per share, the Trustees have the right to change from an
amortized cost basis of valuation to valuation based on market quotations. The
Fund will notify shareholders of the Fund of any such change.
 
IX. TAXATION OF THE FUND AND SHAREHOLDERS
- --------------------------------------------------------------------------------
 
    The Fund intends to distribute all of its daily net investment income (and
net short-term capital gains, if any) to shareholders of record as of the close
of business the preceding business day. Net income, for dividend purposes,
includes accrued interest and amortization of acquisition, original issue and
market discount, plus or minus any short-term gains or losses realized on sales
of portfolio securities, less the amortization of market premium and the
estimated expenses of the Fund. Net income will be calculated immediately prior
to the determination of net asset value per share of the Fund.
 
    The Trustees of the Fund may revise the dividend policy, or postpone the
payment of dividends, if the Fund should have or anticipate any large unexpected
expense, loss or fluctuation in net assets which, in the opinion of the
Trustees, might have a significant adverse effect on shareholders. On occasion,
in order to maintain a constant $1.00 per share net asset value, the Trustees
may direct that the number of outstanding shares be reduced in each
shareholder's account. Such reduction may result in taxable income to a
shareholder in excess of the net increase (i.e., dividends, less such
reductions), if any, in the shareholder's account for a period of time.
Furthermore, such reduction may be realized as a capital loss when the shares
are liquidated.
 
    It has been and remains the Trust's policy and practice that, if checks for
dividends or distributions paid in cash remain uncashed, no interest will accrue
on amounts represented by such uncashed checks.
 
    TAXES.  The Fund has qualified and intends to remain qualified as a
regulated investment company under Subchapter M of the Internal Revenue Code. If
so qualified, the Fund will not be subject to federal income taxes, provided
that it distributes all of its taxable net investment income and all of its net
realized gains.
 
    Shareholders will be subject to federal income tax on dividends paid from
interest income derived from taxable securities and on distributions of realized
net short-term capital gains and long-term capital gains. Interest and realized
net short-term capital gains distributions are taxable to the shareholder as
ordinary dividend income regardless of whether the shareholder receives such
distributions in additional shares or in cash. Since the Trust's income is
expected to be derived entirely from interest rather than dividends, none of
such distributions will be eligible for the federal dividends received deduction
available to corporations. Realized net long-term capital gains distributions,
which are taxable as long-term capital gains, are not eligible for the dividends
received deduction.
 
                                       23
<PAGE>
    Under present Massachusetts law, the Fund is not subject to any
Massachusetts income tax during any fiscal year in which the Fund qualifies as a
regulated investment company. The Fund might be subject to Massachusetts income
taxes for any taxable year in which it does not so qualify as a regulated
investment company.
 
    The Fund may be subject to tax or taxes in certain states where it does
business. Furthermore, in those states which have income tax laws, the tax
treatment of the Fund and of shareholders with respect to distributions by the
Fund may differ from federal tax treatment.
 
    Shareholders are urged to consult their own tax advisors regarding specific
questions as to federal, state or local taxes.
 
X. UNDERWRITERS
- --------------------------------------------------------------------------------
 
    The Fund's shares are offered to the public on a continuous basis. The
Distributor, as the principal underwriter of the shares, has certain obligations
under the Distribution Agreement concerning the distribution of the shares.
These obligations and the compensation the Distributor receives are described
above in the sections titled "Principal Underwriter" and "Rule 12b-1 Plans."
 
XI. CALCULATION OF PERFORMANCE DATA
- --------------------------------------------------------------------------------
 
    The Fund's current yield for the seven days ending January 31, 1999 was
    %. The effective annual yield on January 31, 1999, was     % assuming daily
compounding.
 
    The Fund's annualized current yield, as may be quoted from time to time in
advertisements and other communications to shareholders and potential investors,
is computed by determining, for a stated seven-day period, the net change,
exclusive of capital changes and including the value of additional shares
purchased with dividends and any dividends declared therefrom (which reflect
deductions of all expenses of the Fund such as management fees), in the value of
a hypothetical pre-existing account having a balance of one share at the
beginning of the period, and dividing the difference by the value of the account
at the beginning of the base period to obtain the base period return, and then
multiplying the base period return by (365/7).
 
    The Fund's annualized effective yield, as may be quoted from time to time in
advertisements and other communications to shareholders and potential investors,
is computed by determining (for the same stated seven-day period as for the
current yield), the net change, exclusive of capital changes and including the
value of additional shares purchased with dividends and any dividends declared
therefrom (which reflect deductions of all expenses of the Fund such as
management fees), in the value of a hypothetical pre-existing account having a
balance of one share at the beginning of the period, and dividing the difference
by the value of the account at the beginning of the base period to obtain the
base period return, and then compounding the base period return by adding 1,
raising the sum to a power equal to 365 divided by 7, and subtracting 1 from the
result.
 
    The yields quoted in any advertisement or other communication should not be
considered a representation of the yields of the Fund in the future since the
yield is not fixed. Actual yields will depend not only on the type, quality and
maturities of the investments held by the Fund and changes in interest rates on
such investments, but also on changes in the Fund's expenses during the period.
 
    Yield information may be useful in reviewing the performance of the Fund and
for providing a basis for comparison with other investment alternatives.
However, unlike bank deposits or other investments which typically pay a fixed
yield for a stated period of time, the Fund's yield fluctuates.
 
    The Fund may also advertise the growth of hypothetical investments of
$10,000, $50,000 and $100,000 in shares of the Fund by adding the sum of all
distributions on 10,000, 50,000 or 100,000
 
                                       24
<PAGE>
shares of the Fund since inception to $10,000, $50,000 and $100,000, as the case
may be. Investments of $10,000, $50,000 and $100,000 in the Fund at inception
(February 17, 1982) would have grown to $         , $         and $         ,
respectively, at January 31, 1999.
 
XII. FINANCIAL STATEMENTS
- --------------------------------------------------------------------------------
 
    EXPERTS.  The financial statements of the Fund for the fiscal year ended
January 31, 1999 included in the PROSPECTUS and incorporated by reference in
this STATEMENT OF ADDITIONAL INFORMATION were given in reliance on the report of
              , independent accountants, on the authority of that firm as
experts in auditing and accounting.
 
                                     *****
 
    This STATEMENT OF ADDITIONAL INFORMATION and the PROSPECTUS do not contain
all of the information set forth in the REGISTRATION STATEMENT the Fund has
filed with the SEC. The complete REGISTRATION STATEMENT may be obtained from the
SEC.
 
                                       25
<PAGE>

           MORGAN STANLEY DEAN WITTER U.S. GOVERNMENT MONEY MARKET TRUST
                                          
                              PART C OTHER INFORMATION

Item 23.  EXHIBITS

     1.   Form of Amendment to the Declaration of Trust of the Registrant.
     
     5.   Form of Amended Investment Management Agreement between the Registrant
          and Morgan Stanley Dean Witter Advisors Inc.
     
     8.   Form of Amended and Restated Transfer Agency and Service Agreement
          between the Registrant and Morgan Stanley Dean Witter Trust FSB.

     9.   Form of Amended Services Agreement between Morgan Stanley Dean Witter
          Advisors Inc. and Morgan Stanley Dean Witter Services Company Inc.

     27.  Financial Data Schedule - to be filed by amendment.
     
     All other exhibits were previously filed via EDGAR and are hereby
     incorporated by reference.

Item 24.  PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH THE FUND

          None

Item 25.  INDEMNIFICATION

     Pursuant to Section 5.3 of the Registrant's Declaration of Trust and under
Section 4.8 of the Registrant's By-Laws, the indemnification of the Registrant's
trustees, officers, employees and agents is permitted if it is determined that
they acted under the belief that their actions were in or not opposed to the
best interest of the Registrant, and, with respect to any criminal proceeding,
they had reasonable cause to believe their conduct was not unlawful.  In
addition, indemnification is permitted only if it is determined that the actions
in question did not render them liable by reason of willful misfeasance, bad
faith or gross negligence in the performance of their duties or by reason of
reckless disregard of their obligations and duties to the Registrant.  Trustees,
officers, employees and agents will be indemnified for the expense of litigation
if it is determined that they are entitled to indemnification against any
liability established in such litigation.  The Registrant may also advance money
for these expenses provided that they give their undertakings to repay the
Registrant unless their conduct is later determined to permit indemnification.

     Pursuant to Section 5.2 of the Registrant's Declaration of Trust and
paragraph 7 of the Registrant's Investment Management Agreement, neither the
Investment Manager nor any trustee, officer, employee or agent of the Registrant
shall be liable for any action or failure to act, except in the case of bad
faith, willful misfeasance, gross negligence or reckless disregard of duties to
the Registrant.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 (the "Act") may be permitted to trustees, officers and controlling
persons of the Registrant pursuant to the foregoing provisions or otherwise, the
Registrant has been advised that in the opinion of 

<PAGE>

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 trustee, officer, or
controlling person of the Registrant in connection with the successful defense
of any action, suit or proceeding) is asserted against the Registrant by such
trustee, officer or controlling person in connection with the shares 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.

     The Registrant hereby undertakes that it will apply the indemnification
provision of its by-laws in a manner consistent with Release 11330 of the
Securities and Exchange Commission under the Investment Company Act of 1940, so
long as the interpretation of Sections 17(h) and 17(i) of such Act remains in
effect.

     Registrant, in conjunction with the Investment Manager, Registrant's
Trustees, and other registered investment management companies managed by the
Investment Manager, maintains insurance on behalf of any person who is or was a
Trustee, officer, employee, or agent of Registrant, or who is or was serving at
the request of Registrant as a trustee, director, officer, employee or agent of
another trust or corporation, against any liability asserted against him and
incurred by him or arising out of his position.  However, in no event will
Registrant maintain insurance to indemnify any such person for any act for which
Registrant itself is not permitted to indemnify him.
     
Item 26. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISOR

     See "The Fund and Its Management" in the Prospectus regarding the business
of the investment advisor.  The following information is given regarding
officers of Morgan Stanley Dean Witter Advisors Inc. ("MSDW Advisors").  MSDW
Advisors is a wholly-owned subsidiary of Morgan Stanley Dean Witter & Co.  The
principal address of the Morgan Stanley Dean Witter Funds is Two World Trade
Center, New York, New York 10048.

     The term "Morgan Stanley Dean Witter Funds" refers to the following
registered investment companies:

CLOSED-END INVESTMENT COMPANIES
(1)    Morgan Stanley Dean Witter California Insured Municipal Income Trust
(2)    Morgan Stanley Dean Witter California Quality Municipal Securities
(3)    Morgan Stanley Dean Witter Government Income Trust
(4)    Morgan Stanley Dean Witter High Income Advantage Trust
(5)    Morgan Stanley Dean Witter High Income Advantage Trust II
(6)    Morgan Stanley Dean Witter High Income Advantage Trust III
(7)    Morgan Stanley Dean Witter Income Securities Inc.
(8)    Morgan Stanley Dean Witter Insured California Municipal Securities
(9)    Morgan Stanley Dean Witter Insured Municipal Bond Trust
(10)   Morgan Stanley Dean Witter Insured Municipal Income Trust
(11)   Morgan Stanley Dean Witter Insured Municipal Securities
(12)   Morgan Stanley Dean Witter Insured Municipal Trust
(13)   Morgan Stanley Dean Witter Municipal Income Opportunities Trust
(14)   Morgan Stanley Dean Witter Municipal Income Opportunities Trust II

<PAGE>

(15)   Morgan Stanley Dean Witter Municipal Income Opportunities Trust III
(16)   Morgan Stanley Dean Witter Municipal Income Trust
(17)   Morgan Stanley Dean Witter Municipal Income Trust II
(18)   Morgan Stanley Dean Witter Municipal Income Trust III
(19)   Morgan Stanley Dean Witter Municipal Premium Income Trust
(20)   Morgan Stanley Dean Witter New York Quality Municipal Securities
(21)   Morgan Stanley Dean Witter Prime Income Trust
(22)   Morgan Stanley Dean Witter Quality Municipal Income Trust
(23)   Morgan Stanley Dean Witter Quality Municipal Investment Trust
(24)   Morgan Stanley Dean Witter Quality Municipal Securities

OPEN-END INVESTMENT COMPANIES
(1)    Active Assets California Tax-Free Trust
(2)    Active Assets Government Securities Trust
(3)    Active Assets Money Trust
(4)    Active Assets Tax-Free Trust
(5)    Morgan Stanley Dean Witter Aggressive Equity Fund
(6)    Morgan Stanley Dean Witter American Value Fund
(7)    Morgan Stanley Dean Witter Balanced Growth Fund
(8)    Morgan Stanley Dean Witter Balanced Income Fund
(9)    Morgan Stanley Dean Witter California Tax-Free Daily Income Trust
(10)   Morgan Stanley Dean Witter California Tax-Free Income Fund
(11)   Morgan Stanley Dean Witter Capital Appreciation Fund
(12)   Morgan Stanley Dean Witter Capital Growth Securities
(13)   Morgan Stanley Dean Witter Competitive Edge Fund, "BEST IDEAS PORTFOLIO"
(14)   Morgan Stanley Dean Witter Convertible Securities Trust
(15)   Morgan Stanley Dean Witter Developing Growth Securities Trust
(16)   Morgan Stanley Dean Witter Diversified Income Trust 
(17)   Morgan Stanley Dean Witter Dividend Growth Securities Inc.
(18)   Morgan Stanley Dean Witter Equity Fund
(19)   Morgan Stanley Dean Witter European Growth Fund Inc.
(20)   Morgan Stanley Dean Witter Federal Securities Trust
(21)   Morgan Stanley Dean Witter Financial Services Trust
(22)   Morgan Stanley Dean Witter Fund of Funds
(23)   Morgan Stanley Dean Witter Global Dividend Growth Securities
(24)   Morgan Stanley Dean Witter Global Short-Term Income Fund Inc.
(25)   Morgan Stanley Dean Witter Global Utilities Fund
(26)   Morgan Stanley Dean Witter Growth Fund
(27)   Morgan Stanley Dean Witter Hawaii Municipal Trust
(28)   Morgan Stanley Dean Witter Health Sciences Trust
(29)   Morgan Stanley Dean Witter High Yield Securities Inc.
(30)   Morgan Stanley Dean Witter Income Builder Fund
(31)   Morgan Stanley Dean Witter Information Fund
(32)   Morgan Stanley Dean Witter Intermediate Income Securities
(33)   Morgan Stanley Dean Witter International SmallCap Fund
(34)   Morgan Stanley Dean Witter Japan Fund
(35)   Morgan Stanley Dean Witter Limited Term Municipal Trust
(36)   Morgan Stanley Dean Witter Liquid Asset Fund Inc.
(37)   Morgan Stanley Dean Witter Market Leader Trust
(38)   Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities
(39)   Morgan Stanley Dean Witter Mid-Cap Growth Fund


<PAGE>

(40)   Morgan Stanley Dean Witter Multi-State Municipal Series Trust
(41)   Morgan Stanley Dean Witter Natural Resource Development Securities Inc.
(42)   Morgan Stanley Dean Witter New York Municipal Money Market Trust
(43)   Morgan Stanley Dean Witter New York Tax-Free Income Fund
(44)   Morgan Stanley Dean Witter Pacific Growth Fund Inc.
(45)   Morgan Stanley Dean Witter Precious Metals and Minerals Trust
(46)   Morgan Stanley Dean Witter S&P 500 Index Fund
(47)   Morgan Stanley Dean Witter S&P 500 Select Fund
(48)   Morgan Stanley Dean Witter Select Dimensions Investment Series
(49)   Morgan Stanley Dean Witter Select Municipal Reinvestment Fund
(50)   Morgan Stanley Dean Witter Short-Term Bond Fund
(51)   Morgan Stanley Dean Witter Short-Term U.S. Treasury Trust
(52)   Morgan Stanley Dean Witter Special Value Fund
(53)   Morgan Stanley Dean Witter Strategist Fund 
(54)   Morgan Stanley Dean Witter Tax-Exempt Securities Trust
(55)   Morgan Stanley Dean Witter Tax-Free Daily Income Trust
(56)   Morgan Stanley Dean Witter U.S. Government Money Market Trust
(57)   Morgan Stanley Dean Witter U.S. Government Securities Trust
(58)   Morgan Stanley Dean Witter Utilities Fund
(59)   Morgan Stanley Dean Witter Value-Added Market Series
(60)   Morgan Stanley Dean Witter Value Fund
(61)   Morgan Stanley Dean Witter Variable Investment Series
(62)   Morgan Stanley Dean Witter World Wide Income Trust

       The term "TCW/DW Funds" refers to the following registered investment
companies:

OPEN-END INVESTMENT COMPANIES
(1)    TCW/DW Emerging Markets Opportunities Trust
(2)    TCW/DW Global Telecom Trust
(3)    TCW/DW Income and Growth Fund
(4)    TCW/DW Latin American Growth Fund
(5)    TCW/DW Mid-Cap Equity Trust
(6)    TCW/DW North American Government Income Trust
(7)    TCW/DW Small Cap Growth Fund
(8)    TCW/DW Total Return Trust

CLOSED-END INVESTMENT COMPANIES 
(1)    TCW/DW Term Trust 2000
(2)    TCW/DW Term Trust 2002 
(3)    TCW/DW Term Trust 2003

<PAGE>

NAME AND POSITION                  OTHER SUBSTANTIAL BUSINESS, PROFESSION, 
WITH MORGAN STANLEY DEAN           VOCATION OR EMPLOYMENT, INCLUDING NAME,
WITTER ADVISORS INC.               PRINCIPAL ADDRESS AND NATURE OF CONNECTION
- -----------------------------------------------------------------------------

Mitchell M. Merin                  President and Chief Operating Officer of 
President, Chief                   Asset Management of Morgan Stanley Dean
Executive Officer and              Witter & Co. ("MSDW); Chairman and Director
Director                           of Morgan Stanley Dean Witter Distributors
                                   Inc. ("MSDW Distributors") and Morgan Stanley
                                   Dean Witter Trust FSB ("MSDW Trust");
                                   President, Chief Executive Officer and
                                   Director of Morgan Stanley Dean Witter
                                   Services Company Inc. ("MSDW Services");
                                   Executive Vice President and Director of Dean
                                   Witter Reynolds Inc. ("DWR"); Director of
                                   various MSDW subsidiaries.

Thomas C. Schneider                Executive Vice President and Chief Strategic
Executive Vice                     and Administrative Officer of MSDW; Executive
President and  Chief               Vice President and Chief Financial Officer of
Financial Officer                  MSDW Services; Director of DWR and MSDW.

Robert M. Scanlan                  President, Chief Operating Officer and
President, Chief                   Director of MSDW Services, Executive Vice
Operating Officer                  President of MSDW Distributors; Executive
and Director                       Vice President and Director of MSDW Trust;
                                   Vice President of the Morgan Stanley Dean
                                   Witter Funds and the TCW/DW Funds.

Joseph J. McAlinden                Vice President of the Morgan Stanley Dean
Executive Vice President           Witter Funds and Director of MSDW Trust.
and Chief Investment
Officer

Ronald E. Robison                  Executive Vice President and Chief
Executive Vice President           Administrative Officer of MSDW Services;
and Chief Administrative           Vice President of the Morgan Stanley Dean
Officer                            Witter Funds and the TCW/DW Funds.

Edward C. Oelsner, III
Executive Vice President

Barry Fink                         Assistant Secretary of DWR; Senior Vice
Senior Vice President,             President, Secretary, General Counsel and
Secretary, General                 Director of MSDW Services; Senior
Counsel and Director               Vice President, Assistant Secretary and
                                   Assistant General Counsel of MSDW
                                   Distributors; Vice President, Secretary and
                                   General Counsel of the Morgan Stanley Dean
                                   Witter Funds and the TCW/DW Funds.

Peter M. Avelar                    Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Mark Bavoso                        Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

<PAGE>

NAME AND POSITION                  OTHER SUBSTANTIAL BUSINESS, PROFESSION, 
WITH MORGAN STANLEY DEAN           VOCATION OR EMPLOYMENT, INCLUDING NAME,
WITTER ADVISORS INC.               PRINCIPAL ADDRESS AND NATURE OF CONNECTION
- -----------------------------------------------------------------------------

Rosalie Clough
Senior Vice President
and Director of Marketing

Richard Felegy
Senior Vice President

Edward F. Gaylor                   Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Robert S. Giambrone                Senior Vice President of MSDW Services, MSDW 
Senior Vice President              Distributors and MSDW Trust and Director of
                                   MSDW Trust; Vice President of the Morgan
                                   Stanley Dean Witter Funds and the TCW/DW
                                   Funds. 

Rajesh K. Gupta                    Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Kenton J. Hinchliffe               Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Kevin Hurley                       Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Margaret Iannuzzi
Senior Vice President

Jenny Beth Jones                   Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

John B. Kemp, III                  President of MSDW Distributors.
Senior Vice President

Anita H. Kolleeny                  Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Jonathan R. Page                   Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Ira N. Ross                        Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Guy G. Rutherfurd, Jr.             Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Rochelle G. Siegel                 Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

<PAGE>

NAME AND POSITION                  OTHER SUBSTANTIAL BUSINESS, PROFESSION, 
WITH MORGAN STANLEY DEAN           VOCATION OR EMPLOYMENT, INCLUDING NAME,
WITTER ADVISORS INC.               PRINCIPAL ADDRESS AND NATURE OF CONNECTION
- -----------------------------------------------------------------------------

James Solloway
Senior Vice President

Jayne M. Stevlingson               Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Paul D. Vance                      Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Elizabeth A. Vetell
Senior Vice President 
and Director of Shareholder 
Communication 

James F. Willison                  Vice President of various Morgan Stanley Dean
Senior Vice President              Witter Funds.

Douglas Brown
First Vice President

Thomas F. Caloia                   First Vice President and Assistant Treasurer
First Vice President               of MSDW Services; Assistant Treasurer of
and Assistant                      MSDW Distributors; Treasurer and Chief
Treasurer                          Financial Officer of the Morgan Stanley Dean
                                   Witter Funds and the TCW/DW Funds.

Thomas Chronert
First Vice President

Marilyn K. Cranney                 Assistant Secretary of DWR; First Vice
First Vice President               President and Assistant Secretary of MSDW
and Assistant Secretary            Services; Assistant Secretary of the Morgan
                                   Stanley Dean Witter Funds and the TCW/DW
                                   Funds.

Salvatore DeSteno                  Vice President of MSDW Services.
First Vice President

Michael Interrante                 First Vice President and Controller of MSDW
First Vice President               Services; Assistant Treasurer of MSDW
and Controller                     Distributors; First Vice President and
                                   Treasurer of MSDW Trust. 

David Johnson
First Vice President

Stanley Kapica
First Vice President

<PAGE>

NAME AND POSITION                  OTHER SUBSTANTIAL BUSINESS, PROFESSION, 
WITH MORGAN STANLEY DEAN           VOCATION OR EMPLOYMENT, INCLUDING NAME,
WITTER ADVISORS INC.               PRINCIPAL ADDRESS AND NATURE OF CONNECTION
- -----------------------------------------------------------------------------

Carsten Otto                       First Vice President and Assistant Secretary
First Vice President               of MSDW Services; Assistant Secretary of the
and Assistant Secretary            Morgan Stanley Dean Witter Funds and the
                                   TCW/DW Funds.

Robert Zimmerman
First Vice President

Dale Albright
Vice President

Joan G. Allman
Vice President

Andrew Arbenz
Vice President

Joseph Arcieri                     Vice President of various Morgan Stanley Dean
Vice President                     Witter Funds.

Nancy Belza
Vice President

Maurice Bendrihem
Vice President and
Assistant Controller

Frank Bruttomesso                  Vice President and Assistant Secretary of 
Vice President and                 MSDW Services; Assistant Secretary of the
Assistant Secretary                Morgan Stanley Dean Witter Funds and the
                                   TCW/DW Funds.

Ronald Caldwell
Vice President

Joseph Cardwell
Vice President

Philip Casparius
Vice President

David Dineen
Vice President

Bruce Dunn
Vice President

Michael Durbin
Vice President

<PAGE>

NAME AND POSITION                  OTHER SUBSTANTIAL BUSINESS, PROFESSION, 
WITH MORGAN STANLEY DEAN           VOCATION OR EMPLOYMENT, INCLUDING NAME,
WITTER ADVISORS INC.               PRINCIPAL ADDRESS AND NATURE OF CONNECTION
- -----------------------------------------------------------------------------

Sheila Finnerty
Vice President

Jeffrey D. Geffen
Vice President

Sandra Gelpieryn
Vice President

Michael Geringer
Vice President

Ellen Gold
Vice President

Stephen Greenhut
Vice President

Peter W. Gurman
Vice President

Matthew Haynes                     Vice President of various Morgan Stanley Dean
Vice President                     Witter Funds.

Peter Hermann                      Vice President of various Morgan Stanley Dean
Vice President                      Witter Funds.

David Hoffman
Vice President

Christopher Jones
Vice President

Kevin Jung
Vice President

Carol Espejo Kane
Vice President

Michelle Kaufman                   Vice President of various Morgan Stanley Dean
Vice President                     Witter Funds.

Paula LaCosta                      Vice President of various Morgan Stanley Dean
Vice President                     Witter Funds.

<PAGE>

NAME AND POSITION                  OTHER SUBSTANTIAL BUSINESS, PROFESSION, 
WITH MORGAN STANLEY DEAN           VOCATION OR EMPLOYMENT, INCLUDING NAME,
WITTER ADVISORS INC.               PRINCIPAL ADDRESS AND NATURE OF CONNECTION
- -----------------------------------------------------------------------------

Thomas Lawlor
Vice President

Gerard J. Lian                     Vice President of various Morgan Stanley Dean
Vice President                     Witter Funds.

Nancy Login
Vice President

Steven MacNamara
Vice President

Catherine Maniscalco               Vice President of Morgan Stanley Dean Witter 
Vice President                     Natural Resource Development Securities Inc.

Albert McGarity
Vice President

LouAnne D. McInnis                 Vice President and Assistant Secretary of 
Vice President and                 MSDW Services; Assistant Secretary of the
Assistant Secretary                Morgan Stanley Dean Witter Funds and the
                                   TCW/DW Funds.

Teresa McRoberts                   Vice President of Morgan Stanley Dean Witter
Vice President                     S&P 500 Select Fund

Sharon K. Milligan
Vice President

Mark Mitchell
Vice President

Julie Morrone
Vice President

Mary Beth Mueller
Vice President

David Myers                        Vice President of Morgan Stanley Dean Witter
Vice President                     Natural Resource Development Securities Inc.

Richard Norris
Vice President

George Paoletti                    Vice President of Morgan Stanley Dean Witter 
Vice President                     Information Fund.

<PAGE>

NAME AND POSITION                  OTHER SUBSTANTIAL BUSINESS, PROFESSION, 
WITH MORGAN STANLEY DEAN           VOCATION OR EMPLOYMENT, INCLUDING NAME,
WITTER ADVISORS INC.               PRINCIPAL ADDRESS AND NATURE OF CONNECTION
- -----------------------------------------------------------------------------

Anne Pickrell                      Vice President of various  Morgan Stanley
Vice President                     Dean Witter Funds.

Michael Roan
Vice President

John Roscoe
Vice President

Hugh Rose
Vice President

Robert Rossetti                    Vice President of various Morgan Stanley Dean
Vice President                     Witter Funds.

Ruth Rossi                         Vice President and Assistant Secretary of
Vice President and                 MSDW Services; Assistant Secretary of the
Assistant Secretary                Morgan Stanley Dean Witter Funds and the
                                   TCW/DW Funds.

Carl F. Sadler
Vice President

Deborah Santaniello
Vice President

Howard L . Schloss                 Vice President of Morgan Stanley Dean Witter
Vice President                     Federal Securities Trust

Peter J. Seeley                    Vice President of various Morgan Stanley Dean
Vice President                     Witter Funds.

Robert Stearns
Vice President

Naomi Stein
Vice President

Michael Strayhorn
Vice President

Kathleen H. Stromberg              Vice President of various Morgan Stanley Dean
Vice President                     Witter Funds.

Marybeth Swisher
Vice President

<PAGE>

NAME AND POSITION                  OTHER SUBSTANTIAL BUSINESS, PROFESSION, 
WITH MORGAN STANLEY DEAN           VOCATION OR EMPLOYMENT, INCLUDING NAME,
WITTER ADVISORS INC.               PRINCIPAL ADDRESS AND NATURE OF CONNECTION
- -----------------------------------------------------------------------------

Robert Vanden Assem
Vice President

James P. Wallin
Vice President

Alice Weiss                        Vice President of various Morgan Stanley Dean
Vice President                      Witter Funds.

John Wong
Vice President

Item 27.    PRINCIPAL UNDERWRITERS

(a)    Morgan Stanley Dean Witter Distributors Inc. ("MSDW Distributors"), a
       Delaware corporation, is the principal underwriter of the Registrant.
       MSDW Distributors is also the principal underwriter of the following
       investment companies:

(1)    Active Assets California Tax-Free Trust
(2)    Active Assets Government Securities Trust
(3)    Active Assets Money Trust
(4)    Active Assets Tax-Free Trust
(5)    Morgan Stanley Dean Witter Aggressive Equity Fund
(6)    Morgan Stanley Dean Witter American Value Fund
(7)    Morgan Stanley Dean Witter Balanced Growth Fund
(8)    Morgan Stanley Dean Witter Balanced Income Fund
(9)    Morgan Stanley Dean Witter California Tax-Free Daily Income Trust
(10)   Morgan Stanley Dean Witter California Tax-Free Income Fund
(11)   Morgan Stanley Dean Witter Capital Appreciation Fund
(12)   Morgan Stanley Dean Witter Capital Growth Securities
(13)   Morgan Stanley Dean Witter Competitive Edge Fund, "BEST IDEAS PORTFOLIO"
(14)   Morgan Stanley Dean Witter Convertible Securities Trust
(15)   Morgan Stanley Dean Witter Developing Growth Securities Trust
(16)   Morgan Stanley Dean Witter Diversified Income Trust 
(17)   Morgan Stanley Dean Witter Dividend Growth Securities Inc.
(18)   Morgan Stanley Dean Witter Equity Fund
(19)   Morgan Stanley Dean Witter European Growth Fund Inc.
(20)   Morgan Stanley Dean Witter Federal Securities Trust
(21)   Morgan Stanley Dean Witter Financial Services Trust
(22)   Morgan Stanley Dean Witter Fund of Funds
(23)   Morgan Stanley Dean Witter Global Dividend Growth Securities
(24)   Morgan Stanley Dean Witter Global Short-Term Income Fund Inc.
(25)   Morgan Stanley Dean Witter Global Utilities Fund
(26)   Morgan Stanley Dean Witter Growth Fund
(27)   Morgan Stanley Dean Witter Hawaii Municipal Trust
(28)   Morgan Stanley Dean Witter Health Sciences Trust
(29)   Morgan Stanley Dean Witter High Yield Securities Inc.

<PAGE>

(30)   Morgan Stanley Dean Witter Income Builder Fund
(31)   Morgan Stanley Dean Witter Information Fund
(32)   Morgan Stanley Dean Witter Intermediate Income Securities
(33)   Morgan Stanley Dean Witter International SmallCap Fund
(34)   Morgan Stanley Dean Witter Japan Fund
(35)   Morgan Stanley Dean Witter Limited Term Municipal Trust
(36)   Morgan Stanley Dean Witter Liquid Asset Fund Inc.
(37)   Morgan Stanley Dean Witter Market Leader Trust
(38)   Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities
(39)   Morgan Stanley Dean Witter Mid-Cap Growth Fund
(40)   Morgan Stanley Dean Witter Multi-State Municipal Series Trust
(41)   Morgan Stanley Dean Witter Natural Resource Development Securities Inc.
(42)   Morgan Stanley Dean Witter New York Municipal Money Market Trust
(43)   Morgan Stanley Dean Witter New York Tax-Free Income Fund
(44)   Morgan Stanley Dean Witter Pacific Growth Fund Inc.
(45)   Morgan Stanley Dean Witter Precious Metals and Minerals Trust
(46)   Morgan Stanley Dean Witter Prime Income Trust
(47)   Morgan Stanley Dean Witter S&P 500 Index Fund
(48)   Morgan Stanley Dean Witter S&P 500 Select Fund
(49)   Morgan Stanley Dean Witter Short-Term Bond Fund
(50)   Morgan Stanley Dean Witter Short-Term U.S. Treasury Trust
(51)   Morgan Stanley Dean Witter Special Value Fund
(52)   Morgan Stanley Dean Witter Strategist Fund 
(53)   Morgan Stanley Dean Witter Tax-Exempt Securities Trust
(54)   Morgan Stanley Dean Witter Tax-Free Daily Income Trust
(55)   Morgan Stanley Dean Witter U.S. Government Money Market Trust
(56)   Morgan Stanley Dean Witter U.S. Government Securities Trust
(57)   Morgan Stanley Dean Witter Utilities Fund
(58)   Morgan Stanley Dean Witter Value-Added Market Series
(59)   Morgan Stanley Dean Witter Value Fund
(60)   Morgan Stanley Dean Witter Variable Investment Series
(61)   Morgan Stanley Dean Witter World Wide Income Trust
(1)    TCW/DW Emerging Markets Opportunities Trust 
(2)    TCW/DW Global Telecom Trust
(3)    TCW/DW Income and Growth
(4)    TCW/DW Latin American Growth Fund
(5)    TCW/DW Mid-Cap Equity Trust
(6)    TCW/DW North American Government Income Trust
(7)    TCW/DW Small Cap Growth Fund
(8)    TCW/DW Total Return Trust 

(b)    The following information is given regarding directors and officers of
       MSDW Distributors not listed in Item 26 above.  The principal address of
       MSDW Distributors is Two World Trade Center, New York, New York 10048. 
       Other than Mr. Purcell, who is a Trustee of the Registrant, none of the
       following persons has any position or office with the Registrant.

Name                               Positions and Office with MSDW Distributors 
- ----                               -------------------------------------------

Christine Edwards                  Executive Vice President, Secretary, Director
                                   and Chief Legal Officer. 

<PAGE>

Name                               Positions and Office with MSDW Distributors 
- ----                               -------------------------------------------

Michael T. Gregg                   Vice President and Assistant Secretary.

James F. Higgins                   Director

Fredrick K. Kubler                 Senior Vice President, Assistant Secretary
                                   and Chief Compliance Officer.

Philip J. Purcell                  Director

John Schaeffer                     Director

Charles Vidala                     Senior Vice President and Financial Principal

Item 28.  LOCATION OF ACCOUNTS AND RECORDS

     All accounts, books and other documents required to be maintained by
Section 31(a) of the Investment Company Act of 1940 and the Rules thereunder are
maintained by the Investment Manager at its offices, except records relating to
holders of shares issued by the Registrant, which are maintained by the
Registrant's Transfer Agent, at its place of business as shown in the
prospectus.

Item 29.  MANAGEMENT SERVICES

          Registrant is not a party to any such management-related service
          contract.

Item 30.  UNDERTAKINGS

          None


<PAGE>

                                     SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it has duly caused
this Post-Effective Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of New York
and State of New York on the 26th day of  January, 1999.

  MORGAN STANLEY DEAN WITTER U.S. GOVERNMENT MONEY MARKET TRUST


                                   By     /s/Barry Fink
                                      --------------------------------------
                                             Barry Fink
                                             Vice President and Secretary

     Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment No. 19 has been signed below by the following persons
in the capacities and on the dates indicated.

<TABLE>
<CAPTION>

          Signatures                         Title                              Date
<S>                                          <C>                                <C>
(1) Principal Executive Officer              President, Chief
                                             Executive Officer,
                                             Trustee and Chairman
By   /s/  Charles A. Fiumefreddo                                                01/26/99
     ---------------------------
          Charles A. Fiumefreddo

(2) Principal Financial Officer              Treasurer and Principal
                                             Accounting Officer

By   /s/  Thomas F. Caloia                                                      01/26/99
     ---------------------------
          Thomas F. Caloia

(3) Majority of the Trustees

     Charles A. Fiumefreddo (Chairman)
     Philip J. Purcell

By   /s/  Barry Fink                                                            01/26/99
     ---------------------------
          Barry Fink
          Attorney-in-Fact

     Michael Bozic
     Edwin J. Garn
     John R. Haire
     Wayne E. Hedien
     Manuel H. Johnson
     Michael E. Nugent
     John L. Schroeder

By   /s/  David M. Butowsky                                                     01/26/99
     ---------------------------
          David M. Butowsky
          Attorney-in-Fact
</TABLE>

<PAGE>

                                    EXHIBIT INDEX

     1.    Form of Amendment to the Declaration of Trust of the Registrant.

     5.    Form of Amended Investment Management Agreement between the
           Registrant and Morgan Stanley Dean Witter Advisors Inc.

     8.    Form of Amended and Restated Transfer Agency and Service Agreement
           between the Registrant and Morgan Stanley Dean Witter Trust FSB.

     9.    Form of Amended Services Agreement between Morgan Stanley Dean
           Witter Advisors Inc. and Morgan Stanley Dean Witter Services Company
           Inc.

     27.   Financial Data Schedule - to be filed by amendment.


<PAGE>

                                                                       EXHIBIT 1



                                    CERTIFICATE


     The undersigned hereby certifies that he is the Secretary of Dean Witter
U.S. Government Money Market Trust (the "Trust"), an unincorporated business
trust organized under the laws of the Commonwealth of Massachusetts, that
annexed hereto is an Amendment to the Declaration of Trust of the Trust adopted
by the Trustees of the Trust on April 30, 1998 as provided in Section 9.3 of the
said Declaration, said Amendment to take effect on June 22, 1998, and I do
hereby further certify that such amendment has not been amended and is on the
date hereof in full force and effect.

     Dated this 22nd day of June, 1998.






                                        --------------------------------
                                        Barry Fink
                                        Secretary

<PAGE>

                                      AMENDMENT





Dated:              June 22, 1998

To be Effective:    June 22, 1998





                                         TO

                   DEAN WITTER U.S. GOVERNMENT MONEY MARKET TRUST

                                DECLARATION OF TRUST

                                       DATED

                                 NOVEMBER 18, 1981

<PAGE>

             Amendment dated June 22, 1998 to the Declaration of Trust
       (the "Declaration") of Dean Witter U.S. Government Money Market Trust
                       (the "Trust") dated November 18, 1981


     WHEREAS, the Trust was established by the Declaration on the date
hereinabove set forth under the laws of the Commonwealth of Massachusetts; and

     WHEREAS, the Trustees of the Trust have deemed it advisable to change the
name of the Trust to "Morgan Stanley Dean Witter U.S. Government Money Market
Trust," such change to be effective on June 22,1998;

NOW, THEREFORE:

     1.  Section 1.1 of Article I of the Declaration is hereby amended so that
that Section shall read in its entirety as follows:

           "Section 1.1  NAME.  The name of the Trust created hereby is the
           Morgan Stanley Dean Witter U.S. Government Money Market Trust and so
           far as may be practicable the Trustees shall conduct the Trust's
           activities, execute all documents and sue or be sued under that
           name, which name (and the word "Trust" whenever herein used) shall
           refer to the Trustees as Trustees, and not as individuals, or
           personally, and shall not refer to the officers, agents, employees
           or Shareholders of the Trust.  Should the Trustees determine that
           the use of such name is not advisable, they may use such other name
           for the Trust as they deem proper and the Trust may hold its
           property and conduct its activities under such other name."

     2.  Subsection (n) of Section 1.2 of Article I of the Declaration is hereby
amended so that that Subsection shall read in its entirety as follows:

           "Section 1.2  DEFINITIONS...

           "(n) "TRUST" means the Morgan Stanley Dean Witter U.S. Government
           Money Market Trust."

     3.  Section 11.7 of Article XI of the Declaration is hereby amended so that
that Section shall read as follows:

           "Section 11.7 USE OF THE NAME "MORGAN STANLEY DEAN WITTER."  Morgan
           Stanley Dean Witter & Co. ("MSDW") has consented to the use by the
           Trust of the identifying name "Morgan Stanley Dean Witter," which is
           a property right of MSDW.  The Trust will only use

<PAGE>

           the name "Morgan Stanley Dean Witter" as a component of its name and
           for no other purpose, and will not purport to grant to any third
           party the right to use the name "Morgan Stanley Dean Witter" for any
           purpose.  MSDW, or any corporate affiliate of MSDW, may use or grant
           to others the right to use the name "Morgan Stanley Dean Witter," or
           any combination or abbreviation thereof, as all or a portion of a
           corporate or business name or for any commercial purpose, including
           a grant of such right to any other investment company.  At the
           request of MSDW or any corporate affiliate of MSDW, the Trust will
           take such action as may be required to provide its consent to the
           use of the name "Morgan Stanley Dean Witter," or any combination or
           abbreviation thereof, by MSDW or any corporate affiliate of MSDW, or
           by any person to whom MSDW or a corporate affiliate of MSDW shall
           have granted the right to such use.  Upon the termination of any
           investment advisory agreement into which a corporate affiliate of
           MSDW and the Trust may enter, the Trust shall, upon request of MSDW
           or any corporate affiliate of MSDW, cease to use the name "Morgan
           Stanley Dean Witter" as a component of its name, and shall not use
           the name, or any combination or abbreviation thereof, as part of its
           name or for any other commercial purpose, and shall cause its
           officers, Trustees and Shareholders to take any and all actions
           which MSDW or any corporate affiliate of MSDW may request to effect
           the foregoing and to reconvey to MSDW any and all rights to such
           name."

     4. The Trustees of the Trust hereby reaffirm the Declaration, as amended,
in all respects.

     5.  This Amendment may be executed in more than one counterpart, each of
which shall be deemed an original, but all of which together shall constitute
one and the same document.

<PAGE>

  IN WITNESS WHEREOF, the undersigned, the Trustees of the Trust, have executed
this instrument this 22nd day of June, 1998.



- ---------------------                     --------------------------
Michael Bozic, as Trustee                 Manuel H. Johnson, as Trustee
and not individually                      and not individually
c/o Levitz Furniture Corp.                c/o Johnson Smick International Inc.
6111 Broken Sound Parkway, NW             1133 Connecticut Avenue, NW
Boca Raton, FL  33487                     Washington, D.C.  20036




- ----------------------------------        ----------------------------
Charles A. Fiumefreddo, as Trustee        Michael E. Nugent, as Trustee
and not individually                      and not individually
Two World Trade Center                    c/o Triumph Capital, L.P.
New York, NY  10048                       237 Park Avenue
                                          New York, NY  10017




- ----------------------------------        --------------------------------
Edwin J. Garn, as Trustee                 Philip J. Purcell, as Trustee
and not individually                      and not individually
c/o Huntsman Corporation                  1585 Broadway
500 Huntsman Way                          New York, NY  10036
Salt Lake City, UT  84111




- ----------------------------------        --------------------------------
John R. Haire, as Trustee                 John L. Schroeder, as Trustee
and not individually                      and not individually
Two World Trade Center                    c/o Gordon Altman Butowsky Weitzen
New York, NY  10048                         Shalov & Wein
                                          Counsel to the Independent Trustees
                                          114 West 47th Street
                                          New York, NY 10036

- ----------------------------------
Wayne E. Hedien, as Trustee
and not individually
c/o Gordon Altman Butowsky Weitzen
  Shalov & Wein
Counsel to the Independent Trustees
114 West 47th Street
New York, NY  10036

<PAGE>

     STATE OF NEW YORK     )
                           )ss.:
     COUNTY OF NEW YORK    )


     On this 22nd day of June, 1998, MICHAEL BOZIC, CHARLES A. FIUMEFREDDO,
EDWIN J. GARN, JOHN R. HAIRE, WAYNE E. HEDIEN, MANUEL H. JOHNSON, MICHAEL E.
NUGENT, PHILIP J. PURCELL and JOHN L. SCHROEDER, known to me to be the
individuals described in and who executed the foregoing instrument, personally
appeared before me and they severally acknowledged the foregoing instrument to
be their free act and deed.







                                             ----------------------
                                                 Notary Public


MARILYN K. CRANNEY
NOTARY PUBLIC, State of New York
No. 24-4795538
Qualified in Kings County
Commission Expires May 31, 1999


<PAGE>

                                                                      EXHIBIT 5

                        INVESTMENT MANAGEMENT AGREEMENT
 
    AGREEMENT made as of the 31st day of May, 1997, and amended as of April 30,
1998 by and between Dean Witter U.S. Government Money Market Trust, an
unincorporated business trust organized under the laws of the Commonwealth of
Massachusetts (hereinafter called the "Fund"), and Dean Witter InterCapital
Inc., a Delaware corporation (hereinafter called the "Investment Manager"):
 
    WHEREAS, The Fund is engaged in business as an open-end management
investment company and is registered as such under the Investment Company Act of
1940, as amended (the "Act"); and
 
    WHEREAS, The Investment Manager is registered as an investment adviser under
the Investment Advisers Act of 1940, and engages in the business of acting as
investment adviser; and
 
    WHEREAS, The Fund desires to retain the Investment Manager to render
management and investment advisory services in the manner and on the terms and
conditions hereinafter set forth; and
 
    WHEREAS, The Investment Manager desires to be retained to perform services
on said terms and conditions:
 
    Now, Therefore, this Agreement
 
                              W I T N E S S E T H:
 
that in consideration of the premises and the mutual covenants hereinafter
contained, the Fund and the Investment Manager agree as follows:
 
     1. The Fund hereby retains the Investment Manager to act as investment
manager of the Fund and, subject to the supervision of the Trustees, to
supervise the investment activities of the Fund as hereinafter set forth.
Without limiting the generality of the foregoing, the Investment Manager shall
obtain and evaluate such information and advice relating to the economy,
securities markets and securities as it deems necessary or useful to discharge
its duties hereunder; shall continuously manage the assets of the Fund in a
manner consistent with the investment objectives and policies of the Fund; shall
determine the securities to be purchased, sold or otherwise disposed of by the
Fund and the timing of such purchases, sales and dispositions; and shall take
such further action, including the placing of purchase and sale orders on behalf
of the Fund, as the Investment Manager shall deem necessary or appropriate. The
Investment Manager shall also furnish to or place at the disposal of the Fund
such of the information, evaluations, analyses and opinions formulated or
obtained by the Investment Manager in the discharge of its duties as the Fund
may, from time to time, reasonably request.
 
     2. The Investment Manager shall, at its own expense, maintain such staff
and employ or retain such personnel and consult with such other persons as it
shall from time to time determine to be necessary or useful to the performance
of its obligations under this Agreement. Without limiting the generality of the
foregoing, the staff and personnel of the Investment Manager shall be deemed to
include persons employed or otherwise retained by the Investment Manager to
furnish statistical and other factual data, advice regarding economic factors
and trends, information with respect to technical and scientific developments,
and such other information, advice and assistance as the Investment Manager may
desire. The Investment Manager shall, as agent for the Fund, maintain the Fund's
records and books of account (other than those maintained by the Fund's transfer
agent, registrar, custodian and other agents). All such books and records so
maintained shall be the property of the Fund and, upon request therefor, the
Investment Manager shall surrender to the Fund such of the books and records so
requested.
 
     3. The Fund will, from time to time, furnish or otherwise make available to
the Investment Manager such financial reports, proxy statements and other
information relating to the business and affairs of the Fund as the Investment
Manager may reasonably require in order to discharge its duties and obligations
hereunder.
 
     4. The Investment Manager shall bear the cost of rendering the investment
management and supervisory services to be performed by it under this Agreement,
and shall, at its own expense, pay the compensation of the officers and
employees, if any, of the Fund, who are also directors, officers or employees of
the Investment Manager, and provide such office space and equipment and such
clerical and bookkeeping

<PAGE>

services as the Fund shall reasonably require in the conduct of its business,
including the services of personnel in connection with the pricing of the Fund's
shares and preparation of prospectuses, proxy statements and certain reports.
The Investment Manager shall also bear the cost of telephone service, heat,
light, power and other utilities provided to the Fund.
 
     5. The Fund assumes and shall pay or cause to be paid all other expenses of
the Fund, including without limitation: the charges and expenses of any
registrar, any custodian or depository appointed by the Fund for the safekeeping
of its cash, portfolio securities and other property, and any stock transfer or
dividend agent or agents appointed by the Fund; brokers' commissions chargeable
to the Fund in connection with portfolio securities transactions to which the
Fund is a party; all taxes, including securities issuance and transfer taxes,
and fees payable by the Fund to Federal, State or other governmental agencies;
the cost and expense of engraving or printing share certificates representing
shares of the Fund; all costs and expenses in connection with the registration
and maintenance of registration of the Fund and its shares with the Securities
and Exchange Commission and various states and other jurisdictions (including
filing fees and legal fees and disbursements of counsel); the cost and expense
of printing (including typesetting) and distributing prospectuses of the Fund
and supplements thereto to the Fund's shareholders; all expenses of
shareholders' and Trustees' meetings and of preparing, printing and mailing
proxy statements and reports to shareholders; fees and travel expenses of
Trustees or members of any advisory board or committee who are not employees of
the Investment Manager or any corporate affiliate of the Investment Manager; all
expenses incident to the payment of any dividend, distribution, withdrawal or
redemption, whether in shares or in cash; charges and expenses of any outside
service used for pricing of the Fund's shares; charges and expenses of legal
counsel, including counsel to the Trustees of the Fund who are not interested
persons (as defined in the Act) of the Fund or the Investment Manager, and of
independent accountants in connection with any matter relating to the Fund (but
not including attorneys or accountants who are employees of the Investment
Manager); membership dues of the Investment Company Institute; interest payable
on Fund borrowings; postage; insurance premiums on property or personnel
(including officers and Trustees) of the Fund which inure to its benefit;
extraordinary expenses (including but not limited to legal claims and
liabilities and litigation costs and any indemnification related thereto); and
all other charges and costs of the Fund's operation unless otherwise explicitly
provided herein.
 
     6. For the services to be rendered, the facilities furnished, and the
expenses assumed by the Investment Manager, the Fund shall pay to the Investment
Manager monthly compensation determined by applying the following annual rates
to the Fund's daily net assets: 0.50% of the portion of the daily net assets not
exceeding $500 million; 0.425% of the portion of the daily net assets exceeding
$500 million but not exceeding $750 million; 0.375% of the portion of the daily
net assets exceeding $750 million but not exceeding $1 billion; 0.35% of the
portion of the daily net assets exceeding $1 billion but not exceeding $1.5
billion; 0.325% of the portion of the daily net assets exceeding $1.5 billion
but not exceeding $2 billion; 0.30% of the portion of the daily net assets
exceeding $2 billion but not exceeding $2.5 billion; 0.275% of the portion of
the daily net assets exceeding $2.5 billion but not exceeding $3 billion; and
0.25% of the portion of the daily net assets exceeding $3 billion. Except as
hereinafter set forth, compensation under this Agreement shall be calculated and
accrued daily and the amounts of the daily accruals shall be paid monthly. Such
calculations shall be made by applying 1/365ths of the annual rates to the
Fund's net assets each day determined as of the close of business on that day or
the last previous business day. If this Agreement becomes effective subsequent
to the first day of a month or shall terminate before the last day of a month,
compensation for that part of the month this Agreement is in effect shall be
prorated in a manner consistent with the calculation of the fees as set forth
above.
 
     7. The Investment Manager will use its best efforts in the supervision and
management of the investment activities of the Fund, but in the absence of
willful misfeasance, bad faith, gross negligence or reckless disregard of its
obligations hereunder, the Investment Manager shall not be liable to the Fund or
any of its investors for any error of judgment or mistake of law or for any act
or omission by the Investment Manager or for any losses sustained by the Fund or
its investors.
 
     8. Nothing contained in this Agreement shall prevent the Investment Manager
or any affiliated person of the Investment Manager from acting as investment
adviser or manager for any other person, firm


                                       2
<PAGE>

or corporation and shall not in any way bind or restrict the Investment Manager
or any such affiliated person from buying, selling or trading any securities or
commodities for their own accounts or for the account of others for whom they
may be acting. Nothing in this Agreement shall limit or restrict the right of
any director, officer or employee of the Investment Manager to engage in any
other business or to devote his or her time and attention in part to the
management or other aspects of any other business whether of a similar or
dissimilar nature.
 
     9. This Agreement shall remain in effect until April 30, 1999 and from year
to year thereafter provided such continuance is approved at least annually by
the vote of holders of a majority (as defined in the Act) of the outstanding
voting securities of the Fund or by the Board of Trustees of the Fund; provided
that in either event such continuance is also approved annually by the vote of a
majority of the Trustees of the Fund who are not parties to this Agreement or
"interested persons" (as defined in the Act) of any such party, which vote must
be cast in person at a meeting called for the purpose of voting on such
approval; provided, however, that (a) the Fund may, at any time and without the
payment of any penalty, terminate this Agreement upon thirty days' written
notice to the Investment Manager, either by majority vote of the Board of
Trustees of the Fund or by the vote of a majority of the outstanding voting
securities of the Fund; (b) this Agreement shall immediately terminate in the
event of its assignment (within the meaning of the Act) unless such automatic
termination shall be prevented by an exemptive order of the Securities and
Exchange Commission; and (c) the Investment Manager may terminate this Agreement
without payment of penalty on thirty days' written notice to the Fund. Any
notice under this Agreement shall be given in writing, addressed and delivered,
or mailed post-paid, to the other party at the principal office of such party.
 
    10. This Agreement may be amended by the parties without the vote or consent
of shareholders of the Fund to supply any omission, to cure, correct or
supplement any ambiguous, defective or inconsistent provision hereof, or if they
deem it necessary to conform this Agreement to the requirements of applicable
federal laws or regulations, but neither the Fund nor the Investment Manager
shall be liable for failing to do so.
 
    11. This Agreement shall be construed in accordance with the law of the
State of New York and the applicable provisions of the Act. To the extent the
applicable law of the State of New York, or any of the provisions herein,
conflicts with the applicable provisions of the Act, the latter shall control.
If any provision of this Agreement shall be invalid or unenforceable for any
reason the remainder of this Agreement shall not be affected thereby, but rather
shall be enforceable to the greatest extent permitted by law.
 
    12. The Investment Manager and the Fund each agree that the name "Dean
Witter," which comprises a component of the Fund's name, is a property right of
Dean Witter Reynolds Inc. The Fund agrees and consents that (i) it will only use
the name "Dean Witter" as a component of its name and for no other purpose, (ii)
it will not purport to grant to any third party the right to use the name "Dean
Witter" for any purpose, (iii) the Investment Manager or its parent, Morgan
Stanley Dean Witter & Co., or any corporate affiliate of the Investment
Manager's parent, may use or grant to others the right to use the name "Dean
Witter," or any combination or abbreviation thereof, as all or a portion of a
corporate or business name or for any commercial purpose, including a grant of
such right to any other investment company, (iv) at the request of the
Investment Manager or its parent, the Fund will take such action as may be
required to provide its consent to the use of the name "Dean Witter," or any
combination or abbreviation thereof, by the Investment Manager or its parent or
any corporate affiliate of the Investment Manager's parent, or by any person to
whom the Investment Manager or its parent or any corporate affiliate of the
Investment Manager's parent shall have granted the right to such use, and (v)
upon the termination of any investment advisory agreement into which the
Investment Manager and the Fund may enter, or upon termination of affiliation of
the Investment Manager with its parent, the Fund shall, upon request by the
Investment Manager or its parent, cease to use the name "Dean Witter" as a
component of its name, and shall not use the name, or any combination or
abbreviation thereof, as a part of its name or for any other commercial purpose,
and shall cause its officers, Trustees and shareholders to take any and all
actions which the Investment Manager or its parent may request to effect the
foregoing and to reconvey to the Investment Manager or its parent any and all
rights to such name.


                                       3

<PAGE>

    13. The Declaration of Trust establishing Dean Witter U.S. Government Money
Market Trust, dated November 18, 1981, a copy of which, together with all
amendments thereto (the "Declaration"), is on file in the office of the
Secretary of the Commonwealth of Massachusetts, provides that the name Dean
Witter U.S. Government Money Market Trust refers to the Trustees under the
Declaration collectively as Trustees, but not as individuals or personally; and
no Trustee, shareholder, officer, employee or agent of Dean Witter U.S.
Government Money Market Trust shall be held to any personal liability, nor shall
resort be had to their private property for the satisfaction of any obligation
or claim or otherwise, in connection with the affairs of said Dean Witter U.S.
Government Money Market Trust, but the Trust Estate only shall be liable.
 
    IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement, as amended, on April 30, 1998 in New York, New York.


                                       DEAN WITTER U.S. GOVERNMENT MONEY
                                        MARKET TRUST


                                       By: 
                                           -----------------------------------

Attest:
 

- -------------------------------------
 
                                      DEAN WITTER INTERCAPITAL INC.
 

                                      By:  
                                           -----------------------------------
 
Attest:
 

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


                                       4

<PAGE>

                                                                       EXHIBIT 8







                                AMENDED AND RESTATED
                       TRANSFER AGENCY AND SERVICE AGREEMENT

                                        with

                        MORGAN STANLEY DEAN WITTER TRUST FSB























                                                                [open-end funds]

<PAGE>

<TABLE>
<CAPTION>
                                 TABLE OF CONTENTS

                                                                           Page
                                                                           ----
<S>                                                                        <C>
Article 1           Terms of Appointment . . . . . . . . . . . . . . . . . 1

Article 2           Fees and Expenses. . . . . . . . . . . . . . . . . . . 5

Article 3           Representations and Warranties of MSDW TRUST . . . . . 6

Article 4           Representations and Warranties of the Fund . . . . . . 7

Article 5           Duty of Care and Indemnification . . . . . . . . . . . 7

Article 6           Documents and Covenants of the Fund and MSDW TRUST . .10

Article 7           Duration and Termination of Agreement. . . . . . . . .13

Article 8           Assignment . . . . . . . . . . . . . . . . . . . . . .14

Article 9           Affiliations . . . . . . . . . . . . . . . . . . . . .14

Article 10          Amendment. . . . . . . . . . . . . . . . . . . . . . .15

Article 11          Applicable Law . . . . . . . . . . . . . . . . . . . .15

Article 12          Miscellaneous. . . . . . . . . . . . . . . . . . . . .15

Article 13          Merger of Agreement. . . . . . . . . . . . . . . . . .17

Article 14          Personal Liability . . . . . . . . . . . . . . . . . .17
</TABLE>


                                         -i-

<PAGE>

             AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT


          AMENDED AND RESTATED AGREEMENT made as of the 22nd day of June, 1998
by and between each of the Funds listed on the signature pages hereof, each of
such Funds acting severally on its own behalf and not jointly with any of such
other Funds (each such Fund hereinafter referred to as the "Fund"), each such
Fund having its principal office and place of business at Two World Trade
Center, New York, New York, 10048, and MORGAN STANLEY DEAN WITTER TRUST FSB
("MSDW TRUST"), a federally chartered savings bank, having its principal office
and place of business at Harborside Financial Center, Plaza Two, Jersey City,
New Jersey 07311.


          WHEREAS, the Fund desires to appoint MSDW TRUST as its transfer agent,
dividend disbursing agent and shareholder servicing agent and MSDW TRUST desires
to accept such appointment;


          NOW THEREFORE, in consideration of the mutual covenants herein
contained, the parties hereto agree as follows:


Article 1      TERMS OF APPOINTMENT; DUTIES OF MSDW TRUST


               1.1    Subject to the terms and conditions set forth in this
Agreement, the Fund hereby employs and appoints MSDW TRUST to act as, and MSDW
TRUST agrees to act as, the transfer agent for each series and class of shares
of the Fund, whether now or hereafter authorized or issued ("Shares"), dividend
disbursing agent and shareholder servicing agent in


                                         -1-

<PAGE>

connection with any accumulation, open-account or similar plans provided to the
holders of such Shares ("Shareholders") and set out in the currently effective
prospectus and statement of additional information ("prospectus") of the Fund,
including without limitation any periodic investment plan or periodic withdrawal
program.


               1.2    MSDW TRUST agrees that it will perform the following
services:


               (a)    In accordance with procedures established from time to
time by agreement between the Fund and MSDW TRUST, MSDW TRUST shall:


               (i)    Receive for acceptance, orders for the purchase of
Shares, and promptly deliver payment and appropriate documentation therefor to
the custodian of the assets of the Fund (the "Custodian");


               (ii)   Pursuant to purchase orders, issue the appropriate number
of Shares and issue certificates therefor or hold such Shares in book form in
the appropriate Shareholder account;


               (iii)  Receive for acceptance redemption requests and redemption
directions and deliver the appropriate documentation therefor to the Custodian;


               (iv)   At the appropriate time as and when it receives monies
paid to it by the Custodian with respect to any redemption, pay over or cause to
be paid over in the appropriate manner such monies as instructed by the
redeeming Shareholders;


                                         -2-

<PAGE>

               (v)    Effect transfers of Shares by the registered owners
thereof upon receipt of appropriate instructions;


               (vi)   Prepare and transmit payments for dividends and
distributions declared by the Fund;


               (vii)  Calculate any sales charges payable by a Shareholder on
purchases and/or redemptions of Shares of the Fund as such charges may be
reflected in the prospectus;


               (viii) Maintain records of account for and advise the Fund and
its Shareholders as to the foregoing; and


               (ix)   Record the issuance of Shares of the Fund and maintain
pursuant to Rule 17Ad-10(e) under the Securities Exchange Act of 1934 ("1934
Act") a record of the total number of Shares of the Fund which are authorized,
based upon data provided to it by the Fund, and issued and outstanding.  MSDW
TRUST shall also provide to the Fund on a regular basis the total number of
Shares that are authorized, issued and outstanding and shall notify the Fund in
case any proposed issue of Shares by the Fund would result in an overissue.  In
case any issue of Shares would result in an overissue, MSDW TRUST shall refuse
to issue such Shares and shall not countersign and issue any certificates
requested for such Shares.  When recording the issuance of Shares, MSDW TRUST
shall have no obligation to take cognizance of any Blue Sky laws relating to the
issue of sale of such Shares, which functions shall be the sole responsibility
of the Fund.


               (b)     In addition to and not in lieu of the services set forth
in the above paragraph (a), MSDW TRUST shall:


                                         -3-


<PAGE>

               (i)    perform all of the customary services of a transfer
agent, dividend disbursing agent and, as relevant, shareholder servicing agent
in connection with dividend reinvestment, accumulation, open-account or similar
plans (including without limitation any periodic investment plan or periodic
withdrawal program), including but not limited to, maintaining all Shareholder
accounts, preparing Shareholder meeting lists, mailing proxies, receiving and
tabulating proxies, mailing shareholder reports and prospectuses to current
Shareholders, withholding taxes on U.S. resident and non-resident alien
accounts, preparing and filing appropriate forms required with respect to
dividends and distributions by federal tax authorities for all Shareholders,
preparing and mailing confirmation forms and statements of account to
Shareholders for all purchases and redemptions of Shares and other confirmable
transactions in Shareholder accounts, preparing and mailing activity statements
for Shareholders and providing Shareholder account information;


               (ii)   open any and all bank accounts which may be necessary or
appropriate in order to provide the foregoing services; and


               (iii)  provide a system that will enable the Fund to monitor the
total number of Shares sold in each State or other jurisdiction.


               (c)    In addition, the Fund shall:


               (i)    identify to MSDW TRUST in writing those transactions and
assets to be treated as exempt from Blue Sky reporting for each State; and


                                         -4-

<PAGE>

               (ii)   verify the inclusion on the system prior to activation of
each State in which Fund shares may be sold and thereafter monitor the daily
purchases and sales for shareholders in each State.  The responsibility of MSDW
TRUST for the Fund's status under the securities laws of any State or other
jurisdiction is limited to the inclusion on the system of each State as to which
the Fund has informed MSDW TRUST that shares may be sold in compliance with
state securities laws and the reporting of purchases and sales in each such
State to the Fund as provided above and as agreed from time to time by the Fund
and MSDW TRUST.


               (d)    MSDW TRUST shall provide such additional services and
functions not specifically described herein as may be mutually agreed between
MSDW TRUST and the Fund.  Procedures applicable to such services may be
established from time to time by agreement between the Fund and MSDW TRUST.


Article 2      FEES AND EXPENSES

               2.1    For performance by MSDW TRUST pursuant to this Agreement,
each Fund agrees to pay MSDW TRUST an annual maintenance fee for each
Shareholder account and certain transactional fees, if applicable, as set out in
the respective fee schedule attached hereto as Schedule A.  Such fees and
out-of-pocket expenses and advances identified under Section 2.2 below may be
changed from time to time subject to mutual written agreement between the Fund
and MSDW TRUST.


               2.2    In addition to the fees paid under Section 2.1 above, the
Fund agrees to reimburse MSDW TRUST for out of pocket expenses in connection
with the services rendered


                                         -5-

<PAGE>

by MSDW TRUST hereunder.  In addition, any other expenses incurred by MSDW TRUST
at the request or with the consent of the Fund will be reimbursed by the Fund.


               2.3    The Fund agrees to pay all fees and reimbursable expenses
within a reasonable period of time following the mailing of the respective
billing notice.  Postage for mailing of dividends, proxies, Fund reports and
other mailings to all Shareholder accounts shall be advanced to MSDW TRUST by
the Fund upon request prior to the mailing date of such materials.


Article 3      REPRESENTATIONS AND WARRANTIES OF MSDW TRUST

               MSDW TRUST represents and warrants to the Fund that:

               3.1    It is a federally chartered savings bank whose principal
office is in New Jersey.


               3.2    It is and will remain registered with the U.S. Securities
and Exchange Commission ("SEC") as a Transfer Agent pursuant to the requirements
of Section 17A of the 1934 Act.


               3.3    It is empowered under applicable laws and by its charter
and By-Laws to enter into and perform this Agreement.


               3.4    All requisite corporate proceedings have been taken to
authorize it to enter into and perform this Agreement.


               3.5    It has and will continue to have access to the necessary
facilities, equipment and personnel to perform its duties and obligations under
this Agreement.


                                         -6-

<PAGE>

Article 4      REPRESENTATIONS AND WARRANTIES OF THE FUND

               The Fund represents and warrants to MSDW TRUST that:


               4.1    It is a corporation duly organized and existing and in
good standing under the laws of Delaware or Maryland or a trust duly organized
and existing and in good standing under the laws of Massachusetts, as the case
may be.


               4.2    It is empowered under applicable laws and by its Articles
of Incorporation or Declaration of Trust, as the case may be, and under its
By-Laws to enter into and perform this Agreement.


               4.3    All corporate proceedings necessary to authorize it to
enter into and perform this Agreement have been taken.


               4.4    It is an investment company registered with the SEC under
the Investment Company Act of 1940, as amended (the "1940 Act").


               4.5    A registration statement under the Securities Act of 1933
(the "1933 Act") is currently effective and will remain effective, and
appropriate state securities law filings have been made and will continue to be
made, with respect to all Shares of the Fund being offered for sale.


Article 5      DUTY OF CARE AND INDEMNIFICATION

               5.1    MSDW TRUST shall not be responsible for, and the Fund
shall indemnify and hold MSDW TRUST harmless from and against, any and all
losses, damages, costs,


                                         -7-

<PAGE>

charges, counsel fees, payments, expenses and liability arising out of or
attributable to:


               (a)    All actions of MSDW TRUST or its agents or subcontractors
required to be taken pursuant to this Agreement, provided that such actions are
taken in good faith and without negligence or willful misconduct.


               (b)    The Fund's refusal or failure to comply with the terms of
this Agreement, or which arise out of the Fund's lack of good faith, negligence
or willful misconduct or which arise out of breach of any representation or
warranty of the Fund hereunder.


               (c)    The reliance on or use by MSDW TRUST or its agents or
subcontractors of information, records and documents which (i) are received by
MSDW TRUST or its agents or subcontractors and furnished to it by or on behalf
of the Fund, and (ii) have been prepared and/or maintained by the Fund or any
other person or firm on behalf of the Fund.


               (d)    The reliance on, or the carrying out by MSDW TRUST or its
agents or subcontractors of, any instructions or requests of the Fund.


               (e)    The offer or sale of Shares in violation of any
requirement under the federal securities laws or regulations or the securities
or Blue Sky laws of any State or other jurisdiction that notice of offering of
such Shares in such State or other jurisdiction or in violation of any stop
order or other determination or ruling by any federal agency or any State or
other jurisdiction with respect to the offer or sale of such Shares in such
State or other jurisdiction.


                                         -8-

<PAGE>

               5.2    MSDW TRUST shall indemnify and hold the Fund harmless
from or against any and all losses, damages, costs, charges, counsel fees,
payments, expenses and liability arising out of or attributable to any action or
failure or omission to act by MSDW TRUST as a result of the lack of good faith,
negligence or willful misconduct of MSDW TRUST, its officers, employees or
agents.


               5.3    At any time, MSDW TRUST may apply to any officer of the
Fund for instructions, and may consult with legal counsel to the Fund, with
respect to any matter arising in connection with the services to be performed by
MSDW TRUST under this Agreement, and MSDW TRUST and its agents or subcontractors
shall not be liable and shall be indemnified by the Fund for any action taken or
omitted by it in reliance upon such instructions or upon the opinion of such
counsel.  MSDW TRUST, its agents and subcontractors shall be protected and
indemnified in acting upon any paper or document furnished by or on behalf of
the Fund, reasonably believed to be genuine and to have been signed by the
proper person or persons, or upon any instruction, information, data, records or
documents provided to MSDW TRUST or its agents or subcontractors by machine
readable input, telex, CRT data entry or other similar means authorized by the
Fund, and shall not be held to have notice of any change of authority of any
person, until receipt of written notice thereof from the Fund.  MSDW TRUST, its
agents and subcontractors shall also be protected and indemnified in recognizing
stock certificates which are reasonably believed to bear the proper manual or
facsimile signature of the officers of the Fund, and the proper countersignature
of any former transfer agent or registrar, or of a co-transfer agent or
co-registrar.


                                         -9-

<PAGE>

               5.4    In the event either party is unable to perform its
obligations under the terms of this Agreement because of acts of God, strikes,
equipment or transmission failure or damage reasonably beyond its control, or
other causes reasonably beyond its control, such party shall not be liable for
damages to the other for any damages resulting from such failure to perform or
otherwise from such causes.


               5.5    Neither party to this Agreement shall be liable to the
other party for consequential damages under any provision of this Agreement or
for any act or failure to act hereunder.


               5.6    In order that the indemnification provisions contained in
this Article 5 shall apply, upon the assertion of a claim for which either party
may be required to indemnify the other, the party seeking indemnification shall
promptly notify the other party of such assertion, and shall keep the other
party advised with respect to all developments concerning such claim.  The party
who may be required to indemnify shall have the option to participate with the
party seeking indemnification in the defense of such claim.  The party seeking
indemnification shall in no case confess any claim or make any compromise in any
case in which the other party may be required to indemnify it except with the
other party's prior written consent.


Article 6      DOCUMENTS AND COVENANTS OF THE FUND AND MSDW TRUST

               6.1    The Fund shall promptly furnish to MSDW TRUST the
following, unless previously furnished to Dean Witter Trust Company, the prior
transfer agent of the Fund:


                                         -10-

<PAGE>

               (a)    If a corporation:


               (i)    A certified copy of the resolution of the Board of
Directors of the Fund authorizing the appointment of MSDW TRUST and the
execution and delivery of this Agreement;


               (ii)   A certified copy of the Articles of Incorporation and
By-Laws of the Fund and all amendments thereto;


               (iii)  Certified copies of each vote of the Board of Directors
designating persons authorized to give instructions on behalf of the Fund and
signature cards bearing the signature of any officer of the Fund or any other
person authorized to sign written instructions on behalf of the Fund;


               (iv)   A specimen of the certificate for Shares of the Fund in
the form approved by the Board of Directors, with a certificate of the Secretary
of the Fund as to such approval;


               (b)    If a business trust:


               (i)    A certified copy of the resolution of the Board of
Trustees of the Fund authorizing the appointment of MSDW TRUST and the execution
and delivery of this Agreement;


               (ii)   A certified copy of the Declaration of Trust and By-Laws
of the Fund and all amendments thereto;


                                         -11-

<PAGE>

               (iii)  Certified copies of each vote of the Board of Trustees
designating persons authorized to give instructions on behalf of the Fund and
signature cards bearing the signature of any officer of the Fund or any other
person authorized to sign written instructions on behalf of the Fund;


               (iv)   A specimen of the certificate for Shares of the Fund in
the form approved by the Board of Trustees, with a certificate of the Secretary
of the Fund as to such approval;


               (c)    The current registration statements and any amendments
and supplements thereto filed with the SEC pursuant to the requirements of the
1933 Act or the 1940 Act;

               (d)    All account application forms or other documents relating
to Shareholder accounts and/or relating to any plan, program or service offered
or to be offered by the Fund; and


               (e)    Such other certificates, documents or opinions as MSDW
TRUST deems to be appropriate or necessary for the proper performance of its
duties.


               6.2    MSDW TRUST hereby agrees to establish and maintain
facilities and procedures reasonably acceptable to the Fund for safekeeping of
Share certificates, check forms and facsimile signature imprinting devices, if
any; and for the preparation or use, and for keeping account of, such
certificates, forms and devices.


                                         -12-

<PAGE>

               6.3    MSDW TRUST shall prepare and keep records relating to the
services to be performed hereunder, in the form and manner as it may deem
advisable and as required by applicable laws and regulations.  To the extent
required by Section 31 of the 1940 Act, and the rules and regulations
thereunder, MSDW TRUST agrees that all such records prepared or maintained by
MSDW TRUST relating to the services performed by MSDW TRUST hereunder are the
property of the Fund and will be preserved, maintained and made available in
accordance with such Section 31 of the 1940 Act, and the rules and regulations
thereunder, and will be surrendered promptly to the Fund on and in accordance
with its request.


               6.4    MSDW TRUST and the Fund agree that all books, records,
information and data pertaining to the business of the other party which are
exchanged or received pursuant to the negotiation or the carrying out of this
Agreement shall remain confidential and shall not be voluntarily disclosed to
any other person except as may be required by law or with the prior consent of
MSDW TRUST and the Fund.


               6.5    In case of any request or demands for the inspection of
the Shareholder records of the Fund, MSDW TRUST will endeavor to notify the Fund
and to secure instructions from an authorized officer of the Fund as to such
inspection.  MSDW TRUST reserves the right, however, to exhibit the Shareholder
records to any person whenever it is advised by its counsel that it may be held
liable for the failure to exhibit the Shareholder records to such person.


Article 7      DURATION AND TERMINATION OF AGREEMENT

               7.1    This Agreement shall remain in full force and effect
until August 1,


                                         -13-

<PAGE>

2000 and from year-to-year thereafter unless terminated by either party as
provided in Section 7.2 hereof.


               7.2    This Agreement may be terminated by the Fund on 60 days
written notice, and by MSDW TRUST on 90 days written notice, to the other party
without payment of any penalty.


               7.3    Should the Fund exercise its right to terminate, all
out-of-pocket expenses associated with the movement of records and other
materials will be borne by the Fund.  Additionally, MSDW TRUST reserves the
right to charge for any other reasonable fees and expenses associated with such
termination.


Article 8      ASSIGNMENT

               8.1    Except as provided in Section 8.3 below, neither this
Agreement nor any rights or obligations hereunder may be assigned by either
party without the written consent of the other party.


               8.2    This Agreement shall inure to the benefit of and be
binding upon the parties and their respective permitted successors and assigns.


               8.3    MSDW TRUST may, in its sole discretion and without
further consent by the Fund, subcontract, in whole or in part, for the
performance of its obligations and duties hereunder with any person or entity
including but not limited to companies which are affiliated with MSDW TRUST;
PROVIDED, HOWEVER, that such person or entity has and maintains the
qualifications, if any, required to perform such obligations and duties, and
that MSDW TRUST


                                         -14-

<PAGE>

shall be as fully responsible to the Fund for the acts and omissions of any
agent or subcontractor as it is for its own acts or omissions under this
Agreement.


Article 9      AFFILIATIONS

               9.1    MSDW TRUST may now or hereafter, without the consent of
or notice to the Fund, function as transfer agent and/or shareholder servicing
agent for any other investment company registered with the SEC under the 1940
Act and for any other issuer, including without limitation any investment
company whose adviser, administrator, sponsor or principal underwriter is or may
become affiliated with Morgan Stanley Dean Witter & Co. or any of its direct or
indirect subsidiaries or affiliates.


               9.2    It is understood and agreed that the Directors or
Trustees (as the case may be), officers, employees, agents and shareholders of
the Fund, and the directors, officers, employees, agents and shareholders of the
Fund's investment adviser and/or distributor, are or may be interested in MSDW
TRUST as directors, officers, employees, agents and shareholders or otherwise,
and that the directors, officers, employees, agents and shareholders of MSDW
TRUST may be interested in the Fund as Directors or Trustees (as the case may
be), officers, employees, agents and shareholders or otherwise, or in the
investment adviser and/or distributor as directors, officers, employees, agents,
shareholders or otherwise.


Article 10     AMENDMENT

               10.1   This Agreement may be amended or modified by a written
agreement executed by both parties and authorized or approved by a resolution of
the Board of Directors or the Board of Trustees (as the case may be) of the
Fund.


                                         -15-

<PAGE>

Article 11     APPLICABLE LAW

               11.1   This Agreement shall be construed and the provisions
thereof interpreted under and in accordance with the laws of the State of New
York.


Article 12     MISCELLANEOUS

               12.1   In the event that one or more additional investment
companies managed or administered by Morgan Stanley Dean Witter Advisors Inc. or
any of its affiliates ("Additional Funds") desires to retain MSDW TRUST to act
as transfer agent, dividend disbursing agent and/or shareholder servicing agent,
and MSDW TRUST desires to render such services, such services shall be provided
pursuant to a letter agreement, substantially in the form of Exhibit A hereto,
between MSDW TRUST and each Additional Fund.


               12.2   In the event of an alleged loss or destruction of any
Share certificate, no new certificate shall be issued in lieu thereof, unless
there shall first be furnished to MSDW TRUST an affidavit of loss or non-receipt
by the holder of Shares with respect to which a certificate has been lost or
destroyed, supported by an appropriate bond satisfactory to MSDW TRUST and the
Fund issued by a surety company satisfactory to MSDW TRUST, except that MSDW
TRUST may accept an affidavit of loss and indemnity agreement executed by the
registered holder (or legal representative) without surety in such form as MSDW
TRUST deems appropriate indemnifying MSDW TRUST and the Fund for the issuance of
a replacement certificate, in cases where the alleged loss is in the amount of
$1,000 or less.


            12.3      In the event that any check or other order for payment of
money on the


                                         -16-

<PAGE>

account of any Shareholder or new investor is returned unpaid for any reason,
MSDW TRUST will (a) give prompt notification to the Fund's distributor
("Distributor") (or to the Fund if the Fund acts as its own distributor) of such
non-payment; and (b) take such other action, including imposition of a
reasonable processing or handling fee, as MSDW TRUST may, in its sole
discretion, deem appropriate or as the Fund and, if applicable, the Distributor
may instruct MSDW TRUST.


            12.4      Any notice or other instrument authorized or required by
this Agreement to be given in writing to the Fund or to MSDW TRUST shall be
sufficiently given if addressed to that party and received by it at its office
set forth below or at such other place as it may from time to time designate in
writing.

To the Fund:

[Name of Fund]
Two World Trade Center
New York, New York  10048

Attention:  General Counsel

To MSDW TRUST:

Morgan Stanley Dean Witter Trust FSB
Harborside Financial Center
Plaza Two
Jersey City, New Jersey  07311

Attention:  President

Article 13     MERGER OF AGREEMENT

               13.1   This Agreement constitutes the entire agreement between
the parties hereto and supersedes any prior agreement with respect to the
subject matter hereof whether oral or written.


                                         -17-

<PAGE>

Article 14     PERSONAL LIABILITY

               14.1   In the case of a Fund organized as a Massachusetts
business trust, a copy of the Declaration of Trust of the Fund is on file with
the Secretary of The Commonwealth of Massachusetts, and notice is hereby given
that this instrument is executed on behalf of the Board of Trustees of the Fund
as Trustees and not individually and that the obligations of this instrument are
not binding upon any of the Trustees or shareholders individually but are
binding only upon the assets and property of the Fund; provided, however, that
the Declaration of Trust of the Fund provides that the assets of a particular
Series of the Fund shall under no circumstances be charged with liabilities
attributable to any other Series of the Fund and that all persons extending
credit to, or contracting with or having any claim against, a particular Series
of the Fund shall look only to the assets of that particular Series for payment
of such credit, contract or claim.


            IN WITNESS WHEREOF, the parties hereto have caused this Amended and
Restated Agreement to be executed in their names and on their behalf by and
through their duly authorized officers, as of the day and year first above
written.


     MORGAN STANLEY DEAN WITTER FUNDS

     MONEY MARKET FUNDS

1. Morgan Stanley Dean Witter Liquid Asset Fund Inc.
2. Active Assets Money Trust
3. Morgan Stanley Dean Witter U.S. Government Money Market Trust
4. Active Assets Government Securities Trust
5. Morgan Stanley Dean Witter Tax-Free Daily Income Trust
6. Active Assets Tax-Free Trust
7. Morgan Stanley Dean Witter California Tax-Free Daily Income Trust
8. Morgan Stanley Dean Witter New York Municipal Money Market Trust
9. Active Assets California Tax-Free Trust


                                         -18-

<PAGE>

     EQUITY FUNDS

10. Morgan Stanley Dean Witter American Value Fund
11. Morgan Stanley Dean Witter Mid-Cap Growth Fund
12. Morgan Stanley Dean Witter Dividend Growth Securities Inc.
13. Morgan Stanley Dean Witter Capital Growth Securities
14. Morgan Stanley Dean Witter Global Dividend Growth Securities
15. Morgan Stanley Dean Witter Income Builder Fund
16. Morgan Stanley Dean Witter Natural Resource Development Securities Inc.
17. Morgan Stanley Dean Witter Precious Metals and Minerals Trust
18. Morgan Stanley Dean Witter Developing Growth Securities Trust
19. Morgan Stanley Dean Witter Health Sciences Trust
20. Morgan Stanley Dean Witter Capital Appreciation Fund
21. Morgan Stanley Dean Witter Information Fund
22. Morgan Stanley Dean Witter Value-Added Market Series
23. Morgan Stanley Dean Witter European Growth Fund Inc.
24. Morgan Stanley Dean Witter Pacific Growth Fund Inc.
25. Morgan Stanley Dean Witter International SmallCap Fund
26. Morgan Stanley Dean Witter Japan Fund
27. Morgan Stanley Dean Witter Utilities Fund
28. Morgan Stanley Dean Witter Global Utilities Fund
29. Morgan Stanley Dean Witter Special Value Fund
30. Morgan Stanley Dean Witter Financial Services Trust
31. Morgan Stanley Dean Witter Market Leader Trust
32. Morgan Stanley Dean Witter Fund of Funds
33. Morgan Stanley Dean Witter S&P 500 Index Fund
34. Morgan Stanley Dean Witter Competitive Edge Fund
35. Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities
36. Morgan Stanley Dean Witter Equity Fund
37. Morgan Stanley Dean Witter Growth Fund
38. Morgan Stanley Dean Witter S&P 500 Select Fund

     BALANCED FUNDS

39. Morgan Stanley Dean Witter Balanced Growth Fund
40. Morgan Stanley Dean Witter Balanced Income Trust

     ASSET ALLOCATION FUNDS

41. Morgan Stanley Dean Witter Strategist Fund
42. Dean Witter Global Asset Allocation Fund


                                         -19-

<PAGE>

     FIXED INCOME FUNDS

43. Morgan Stanley Dean Witter High Yield Securities Inc.
44. Morgan Stanley Dean Witter High Income Securities
45. Morgan Stanley Dean Witter Convertible Securities Trust
46. Morgan Stanley Dean Witter Intermediate Income Securities
47. Morgan Stanley Dean Witter Short-Term Bond Fund
48. Morgan Stanley Dean Witter World Wide Income Trust
49. Morgan Stanley Dean Witter Global Short-Term Income Fund Inc.
50. Morgan Stanley Dean Witter Diversified Income Trust
51. Morgan Stanley Dean Witter U.S. Government Securities Trust
52. Morgan Stanley Dean Witter Federal Securities Trust
53. Morgan Stanley Dean Witter Short-Term U.S. Treasury Trust
54. Morgan Stanley Dean Witter Intermediate Term U.S. Treasury Trust
55. Morgan Stanley Dean Witter Tax-Exempt Securities Trust
56. Morgan Stanley Dean Witter Limited Term Municipal Trust
57. Morgan Stanley Dean Witter California Tax-Free Income Fund
58. Morgan Stanley Dean Witter New York Tax-Free Income Fund
59. Morgan Stanley Dean Witter Hawaii Municipal Trust
60. Morgan Stanley Dean Witter Multi-State Municipal Series Trust
61. Morgan Stanley Dean Witter Select Municipal Reinvestment Fund

     SPECIAL PURPOSE FUNDS

62. Dean Witter Retirement Series
63. Morgan Stanley Dean Witter Variable Investment Series
64. Morgan Stanley Dean Witter Select Dimensions Investment Series

     TCW/DW FUNDS

65. TCW/DW North American Government Income Trust
66. TCW/DW Latin American Growth Fund
67. TCW/DW Income and Growth Fund
68. TCW/DW Small Cap Growth Fund
69. TCW/DW Total Return Trust


                                         -20-

<PAGE>

70. TCW/DW Global Telecom Trust
71. TCW/DW Mid-Cap Equity Trust
72. TCW/DW Emerging Markets Opportunities Trust


                              By:
                                   ---------------------------------
                                   Barry Fink
                                   Vice President and General Counsel

ATTEST:


- --------------------------
Assistant Secretary

                              MORGAN STANLEY DEAN WITTER TRUST FSB

                              By:
                                   ---------------------------------
                                   John Van Heuvelen
                                   President

ATTEST:


- ---------------------------
Executive Vice President


                                         -21-

<PAGE>

                                      EXHIBIT A


Morgan Stanley Dean Witter Trust FSB
Harborside Financial Center
Plaza Two
Jersey City, NJ 07311


Gentlemen:

            The undersigned, (INSET NAME OF INVESTMENT COMPANY) a
(Massachusetts business trust/Maryland corporation) (the "Fund"), desires to
employ and appoint Morgan Stanley Dean Witter Trust FSB ("MSDW TRUST") to act as
transfer agent for each series and class of shares of the Fund, whether now or
hereafter authorized or issued ("Shares"), dividend disbursing agent and
shareholder servicing agent, registrar and agent in connection with any
accumulation, open-account or similar plan provided to the holders of Shares,
including without limitation any periodic investment plan or periodic withdrawal
plan.


            The Fund hereby agrees that, in consideration for the payment by
the Fund to MSDW TRUST of fees as set out in the fee schedule attached hereto as
Schedule A, MSDW TRUST shall provide such services to the Fund pursuant to the
terms and conditions set forth in the Transfer Agency and Service Agreement
annexed hereto, as if the Fund was a signatory thereto.


                                         -22-

<PAGE>

            Please indicate MSDW TRUST's acceptance of employment and
appointment by the Fund in the capacities set forth above by so indicating in
the space provided below.

                                   Very truly yours,


                                   (NAME OF FUND)



                                   By:
                                        ------------------------------------
                                        Barry Fink
                                        Vice President and General Counsel


ACCEPTED AND AGREED TO:



MORGAN STANLEY DEAN WITTER TRUST FSB



By:
   ----------------------
Its:
    ---------------------
Date:
     --------------------


                                         -23-

<PAGE>

                                     SCHEDULE A


Fund:          Morgan Stanley Dean Witter U.S. Government Money Market Trust

Fees:          (1)  Annual maintenance fee of $15.00* per shareholder account,
               payable monthly.

               (2)  A fee equal to 1/12 of the fee set forth in (1) above, for
               providing Forms 1099 for accounts closed during the year, payable
               following the end of the calendar year.

               (3)  Out-of-pocket expenses in accordance with Section 2.2 of the
               Agreement.

               (4)  Fees for additional services not set forth in this Agreement
               shall be as negotiated between the parties.


               Note: * Actual fee rate will be waived to $9.50 for the first
               50,000 accounts and $5.00 per account above 50,000 accounts.



<PAGE>
                               SERVICES AGREEMENT
 
    AGREEMENT made as of the 17th day of April, 1995, and amended as of June 
22, 1998, by and between Morgan Stanley Dean Witter Advisors Inc., a Delaware 
corporation (herein referred to as "MSDW Advisors"), and Morgan Stanley Dean 
Witter Services Company Inc., a Delaware corporation (herein referred to as 
"MSDW Services").
 
    WHEREAS, MSDW Advisors has entered into separate agreements (each such 
agreement being herein referred to as an "Investment Management Agreement") 
with certain investment companies as set forth on Schedule A (each such 
investment company being herein referred to as a "Fund" and, collectively, as 
the "Funds") pursuant to which MSDW Advisors is to perform, or supervise the 
performance of, among other services, administrative services for the Funds 
(and, in the case of Funds with multiple portfolios, the Series or Portfolios 
of the Funds (such Series and Portfolio being herein individually referred to 
as "a Series" and, collectively, as "the Series"));
 
    WHEREAS, MSDW Advisors desires to retain MSDW Services to perform the 
administrative services as described below; and
 
    WHEREAS, MSDW Services desires to be retained by MSDW Advisors to perform 
such administrative services:
 
    Now, therefore, in consideration of the mutual covenants and agreements 
of the parties hereto as herein set forth, the parties covenant and agree as 
follows:
 
    1. MSDW Services agrees to provide administrative services to each Fund 
as hereinafter set forth. Without limiting the generality of the foregoing, 
MSDW Services shall (i) administer the Fund's business affairs and supervise 
the overall day-to-day operations of the Fund (other than rendering 
investment advice); (ii) provide the Fund with full administrative services, 
including the maintenance of certain books and records, such as journals, 
ledger accounts and other records required under the Investment Company Act 
of 1940, as amended (the "Act"), the notification to the Fund and MSDW 
Advisors of available funds for investment, the reconciliation of account 
information and balances among the Fund's custodian, transfer agent and 
dividend disbursing agent and MSDW Advisors, and the calculation of the net 
asset value of the Fund's shares; (iii) provide the Fund with the services of 
persons competent to perform such supervisory, administrative and clerical 
functions as are necessary to provide effective operation of the Fund; (iv) 
oversee the performance of administrative and professional services rendered 
to the Fund by others, including its custodian, transfer agent and dividend 
disbursing agent, as well as accounting, auditing and other services; (v) 
provide the Fund with adequate general office space and facilities; (vi) 
assist in the preparation and the printing of the periodic updating of the 
Fund's registration statement and prospectus (and, in the case of an open-end 
Fund, the statement of additional information), tax returns, proxy 
statements, and reports to its shareholders and the Securities and Exchange 
Commission; and (vii) monitor the compliance of the Fund's investment 
policies and restrictions.
 
    In the event that MSDW Advisors enters into an Investment Management 
Agreement with another investment company, and wishes to retain MSDW Services 
to perform administrative services hereunder, it shall notify MSDW Services 
in writing. If MSDW Services is willing to render such services, it shall 
notify MSDW Advisors in writing, whereupon such other Fund shall become a 
Fund as defined herein.
 
    2. MSDW Services shall, at its own expense, maintain such staff and 
employ or retain such personnel and consult with such other persons as it 
shall from time to time determine to be necessary or useful to the 
performance of its obligations under this Agreement. Without limiting the 
generality of the foregoing, the staff and personnel of MSDW Services shall 
be deemed to include officers of MSDW Services and persons employed or 
otherwise retained by MSDW Services (including officers and employees of MSDW 
Advisors, with the consent of MSDW Advisors) to furnish services, statistical 
and other factual data, information with respect to technical and scientific 
developments, and such other information, advice and assistance as MSDW 
Services may desire. MSDW Services shall maintain each Fund's records and 
books of account


                                       1

98NYC8262
<PAGE>

(other than those maintained by the Fund's transfer agent, registrar, 
custodian and other agencies). All such books and records so maintained shall 
be the property of the Fund and, upon request therefor, MSDW Services shall 
surrender to MSDW Advisors or to the Fund such of the books and records so 
requested.
 
    3. MSDW Advisors will, from time to time, furnish or otherwise make 
available to MSDW Services such financial reports, proxy statements and other 
information relating to the business and affairs of the Fund as MSDW Services 
may reasonably require in order to discharge its duties and obligations to 
the Fund under this Agreement or to comply with any applicable law and 
regulation or request of the Board of Directors/Trustees of the Fund.
 
    4. For the services to be rendered, the facilities furnished, and the 
expenses assumed by MSDW Services, MSDW Advisors shall pay to MSDW Services 
monthly compensation calculated daily (in the case of an open-end Fund) or 
weekly (in the case of a closed-end Fund) by applying the annual rate or 
rates set forth on Schedule B to the net assets of each Fund. Except as 
hereinafter set forth, (i) in the case of an open-end Fund, compensation 
under this Agreement shall be calculated by applying 1/365th of the annual 
rate or rates to the Fund's or the Series' daily net assets determined as of 
the close of business on that day or the last previous business day and (ii) 
in the case of a closed-end Fund, compensation under this Agreement shall be 
calculated by applying the annual rate or rates to the Fund's average weekly 
net assets determined as of the close of the last business day of each week. 
If this Agreement becomes effective subsequent to the first day of a month or 
shall terminate before the last day of a month, compensation for that part of 
the month this Agreement is in effect shall be prorated in a manner 
consistent with the calculation of the fees as set forth on Schedule B. 
Subject to the provisions of paragraph 5 hereof, payment of MSDW Services' 
compensation for the preceding month shall be made as promptly as possible 
after completion of the computations contemplated by paragraph 5 hereof.
 
    5. In the event the operating expenses of any open-end Fund and/or any
Series thereof, or of InterCapital Income Securities Inc., including amounts
payable to MSDW Advisors pursuant to the Investment Management Agreement, for
any fiscal year ending on a date on which this Agreement is in effect, exceed
the expense limitations applicable to the Fund and/or any Series thereof imposed
by state securities laws or regulations thereunder, as such limitations may be
raised or lowered from time to time, or, in the case of InterCapital Income
Securities Inc. or Morgan Stanley Dean Witter Variable Investment Series or any
Series thereof, the expense limitation specified in the Fund's Investment
Management Agreement, the fee payable hereunder shall be reduced on a pro rata
basis in the same proportion as the fee payable by the Fund under the Investment
Management Agreement is reduced.
 
    6. MSDW Services shall bear the cost of rendering the administrative
services to be performed by it under this Agreement, and shall, at its own
expense, pay the compensation of the officers and employees, if any, of the Fund
employed by MSDW Services, and such clerical help and bookkeeping services as
MSDW Services shall reasonably require in performing its duties hereunder.
 
    7. MSDW Services will use its best efforts in the performance of
administrative activitives on behalf of each Fund, but in the absence of willful
misfeasance, bad faith, gross negligence or reckless disregard of its
obligations hereunder, MSDW Services shall not be liable to the Fund or any of
its investors for any error of judgment or mistake of law or for any act or
omission by MSDW Services or for any losses sustained by the Fund or its
investors. It is understood that, subject to the terms and conditions of the
Investment Management Agreement between each Fund and MSDW Advisors, MSDW
Advisors shall retain ultimate responsibility for all services to be performed
hereunder by MSDW Services. MSDW Services shall indemnify MSDW Advisors and hold
it harmless from any liability that MSDW Advisors may incur arising out of any
act or failure to act by MSDW Services in carrying out its responsibilities
hereunder.
 
    8. It is understood that any of the shareholders, Directors/Trustees,
officers and employees of the Fund may be a shareholder, director, officer or
employee of, or be otherwise interested in, MSDW Services, and in any person
controlling, controlled by or under common control with MSDW Services, and that
MSDW Services and any person controlling, controlled by or under common control
with MSDW
 
                                       2
<PAGE>
Services may have an interest in the Fund. It is also understood that MSDW
Services and any affiliated persons thereof or any persons controlling,
controlled by or under common control with MSDW Services have and may have
advisory, management, administration service or other contracts with other
organizations and persons, and may have other interests and businesses, and
further may purchase, sell or trade any securities or commodities for their own
accounts or for the account of others for whom they may be acting.
 
    9. This Agreement shall continue until April 30, 1999, and thereafter shall
continue automatically for successive periods of one year unless terminated by
either party by written notice delivered to the other party within 30 days of
the expiration of the then-existing period. Notwithstanding the foregoing, this
Agreement may be terminated at any time, by either party on 30 days' written
notice delivered to the other party. In the event that the Investment Management
Agreement between any Fund and MSDW Advisors is terminated, this Agreement will
automatically terminate with respect to such Fund.
 
    10. This Agreement may be amended or modified by the parties in any manner
by written agreement executed by each of the parties hereto.
 
    11. This Agreement may be assigned by either party with the written consent
of the other party.
 
    12. This Agreement shall be construed and interpreted in accordance with the
laws of the State of New York.
 
    IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement, as amended, on June 22, 1998 in New York, New York.
 
<TABLE>
<S>                                            <C>
                                               MORGAN STANLEY DEAN WITTER ADVISORS INC.
 
                                               By: -----------------------------------------
 
Attest:
- ---------------------------------------------
 
                                               MORGAN STANLEY DEAN WITTER SERVICES COMPANY
                                               INC.
 
                                               By: -----------------------------------------
 
Attest:
- ---------------------------------------------
</TABLE>
 
                                       3
<PAGE>
                                   SCHEDULE A
                        MORGAN STANLEY DEAN WITTER FUNDS
                       AS AMENDED AS OF DECEMBER 2, 1998
 
                                 OPEN-END FUNDS
 
<TABLE>
<C>        <S>
       1.  Active Assets California Tax-Free Trust
       2.  Active Assets Government Securities Trust
       3.  Active Assets Money Trust
       4.  Active Assets Tax-Free Trust
       5.  Morgan Stanley Dean Witter Aggressive Equity Fund
       6.  Morgan Stanley Dean Witter American Value Fund
       7.  Morgan Stanley Dean Witter Balanced Growth Fund
       8.  Morgan Stanley Dean Witter Balanced Income Fund
       9.  Morgan Stanley Dean Witter California Tax-Free Daily Income Trust
      10.  Morgan Stanley Dean Witter California Tax-Free Income Fund
      11.  Morgan Stanley Dean Witter Capital Appreciation Fund
      12.  Morgan Stanley Dean Witter Capital Growth Securities
      13.  Morgan Stanley Dean Witter Competitive Edge Fund, "BEST IDEAS" Portfolio
      14.  Morgan Stanley Dean Witter Convertible Securities Trust
      15.  Morgan Stanley Dean Witter Developing Growth Securities Trust
      16.  Morgan Stanley Dean Witter Diversified Income Trust
      17.  Morgan Stanley Dean Witter Dividend Growth Securities Inc.
      18.  Morgan Stanley Dean Witter Equity Fund
      19.  Morgan Stanley Dean Witter European Growth Fund Inc.
      20.  Morgan Stanley Dean Witter Federal Securities Trust
      21.  Morgan Stanley Dean Witter Financial Services Trust
      22.  Morgan Stanley Dean Witter Fund of Funds
           (i)  Domestic Portfolio
           (ii) International Portfolio
      23.  Morgan Stanley Dean Witter Global Dividend Growth Securities
      24.  Morgan Stanley Dean Witter Global Short-Term Income Fund Inc.
      25.  Morgan Stanley Dean Witter Global Utilities Fund
      26.  Morgan Stanley Dean Witter Growth Fund
      27.  Morgan Stanley Dean Witter Hawaii Municipal Trust
      28.  Morgan Stanley Dean Witter Health Sciences Trust
      29.  Morgan Stanley Dean Witter High Yield Securities Inc.
      30.  Morgan Stanley Dean Witter Income Builder Fund
      31.  Morgan Stanley Dean Witter Information Fund
      32.  Morgan Stanley Dean Witter Intermediate Income Securities
      33.  Morgan Stanley Dean Witter International Fund
      34.  Morgan Stanley Dean Witter International SmallCap Fund
      35.  Morgan Stanley Dean Witter Japan Fund
      36.  Morgan Stanley Dean Witter Limited Term Municipal Trust
      37.  Morgan Stanley Dean Witter Liquid Asset Fund Inc.
      38.  Morgan Stanley Dean Witter Managers Focus Fund
      39.  Morgan Stanley Dean Witter Market Leader Trust
      40.  Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities
      41.  Morgan Stanley Dean Witter Mid-Cap Growth Fund
      42.  Morgan Stanley Dean Witter Multi-State Municipal Series Trust
      43.  Morgan Stanley Dean Witter Natural Resource Development Securities Inc.
</TABLE>
 
                                      A-1
<PAGE>
<TABLE>
<C>        <S>
      44.  Morgan Stanley Dean Witter New York Municipal Money Market Trust
      45.  Morgan Stanley Dean Witter New York Tax-Free Income Fund
      46.  Morgan Stanley Dean Witter Pacific Growth Fund Inc.
      47.  Morgan Stanley Dean Witter Precious Metals and Minerals Trust
      48.  Morgan Stanley Dean Witter Select Dimensions Investment Series
           (i)    American Value Portfolio
           (ii)   Balanced Growth Portfolio
           (iii)  Developing Growth Portfolio
           (iv)   Diversified Income Portfolio
           (v)    Dividend Growth Portfolio
           (vi)   Emerging Markets Portfolio
           (vii)  Global Equity Portfolio
           (viii) Growth Portfolio
           (ix)   Mid-Cap Growth Portfolio
           (x)    Money Market Portfolio
           (xi)   North American Government Securities Portfolio
           (xii)  Utilities Portfolio
           (xiii) Value-Added Market Portfolio
      49.  Morgan Stanley Dean Witter Select Municipal Reinvestment Fund
      50.  Morgan Stanley Dean Witter U.S. Government Money Market Trust
      51.  Morgan Stanley Dean Witter Utilities Fund
      52.  Morgan Stanley Dean Witter Short-Term Bond Fund
      53.  Morgan Stanley Dean Witter Short-Term U.S. Treasury Trust
      54.  Morgan Stanley Dean Witter Special Value Fund
      55.  Morgan Stanley Dean Witter Strategist Fund
      56.  Morgan Stanley Dean Witter S&P 500 Index Fund
      57.  Morgan Stanley Dean Witter S&P 500 Select Fund
      58.  Morgan Stanley Dean Witter Tax-Exempt Securities Trust
      59.  Morgan Stanley Dean Witter Tax-Free Daily Income Trust
      60.  Morgan Stanley Dean Witter U.S. Government Securities Trust
      61.  Morgan Stanley Dean Witter Value Fund
      62.  Morgan Stanley Dean Witter Value-Added Market Series
      63.  Morgan Stanley Dean Witter Variable Investment Series
           (i)    Capital Appreciation Portfolio
           (ii)   Capital Growth Portfolio
           (iii)  Competitive Edge "Best Ideas" Portfolio
           (iv)   Dividend Growth Portfolio
           (v)    Equity Portfolio
           (vi)   European Growth Portfolio
           (vii)  Global Dividend Growth Portfolio
           (viii) High Yield Portfolio
           (ix)   Income Builder Portfolio
           (x)    Money Market Portfolio
           (xi)   Quality Income Plus Portfolio
           (xii)  Pacific Growth Portfolio
           (xiii) S&P 500 Index Portfolio
           (xiv)  Strategist Portfolio
           (xv)   Utilities Portfolio
      64.  Morgan Stanley Dean Witter World Wide Income Trust
      65.  Morgan Stanley Dean Witter Worldwide High Income Fund
</TABLE>
 
                                      A-2
<PAGE>
<TABLE>
<CAPTION>
                                              CLOSED-END FUNDS
<C>        <S>
      66.  High Income Advantage Trust
      67.  High Income Advantage Trust II
      68.  High Income Advantage Trust III
      69.  InterCapital Income Securities Inc.
      70.  Dean Witter Government Income Trust
      71.  InterCapital Insured Municipal Bond Trust
      72.  InterCapital Insured Municipal Trust
      73.  InterCapital Insured Municipal Income Trust
      74.  InterCapital California Insured Municipal Income Trust
      75.  InterCapital Insured Municipal Securities
      76.  InterCapital Insured California Municipal Securities
      77.  InterCapital Quality Municipal Investment Trust
      78.  InterCapital Quality Municipal Income Trust
      79.  InterCapital Quality Municipal Securities
      80.  InterCapital California Quality Municipal Securities
      81.  InterCapital New York Quality Municipal Securities
</TABLE>
 
                                      A-3

<PAGE>
                                                                      SCHEDULE B
 
                MORGAN STANLEY DEAN WITTER SERVICES COMPANY INC.
                        SCHEDULE OF ADMINISTRATIVE FEES
                       AS AMENDED AS OF DECEMBER 2, 1998
 
    Monthly compensation calculated daily by applying the following annual rates
to a fund's daily net assets:
 
<TABLE>
<S>                                                 <C>
FIXED INCOME FUNDS
- ------------------ 
Morgan Stanley Dean Witter 
  Balanced Income Fund                              0.060% of the daily net assets.
 
Morgan Stanley Dean Witter 
  California Tax-Free Income Fund                   0.055% of the portion of the daily net assets not exceeding $500
                                                    million; 0.0525% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $750 million; 0.050% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; 0.0475% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.25 billion; and
                                                    0.045% of the portion of the daily net assets exceeding $1.25
                                                    billion.
 
Morgan Stanley Dean Witter 
  Convertible Securities Trust                      0.060% of the portion of the daily net assets not exceeding $750
                                                    million; 0.055% of the portion of the daily net assets exceeding
                                                    $750 million but not exceeding $1 billion; 0.050% of the portion
                                                    of the daily net assets of the exceeding $1 billion but not
                                                    exceeding $1.5 billion; 0.0475% of the portion of the daily net
                                                    assets exceeding $1.5 billion but not exceeding $2 billion;
                                                    0.045% of the portion of the daily net assets exceeding $2
                                                    billion but not exceeding $3 billion; and 0.0425% of the portion
                                                    of the daily net assets exceeding $3 billion.
 
Morgan Stanley Dean Witter 
  Diversified Income Trust                          0.040% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Federal Securities Trust                          0.055% of the portion of the daily net assets not exceeding $1
                                                    billion; 0.0525% of the portion of the daily net assets exceeding
                                                    $1 billion but not exceeding $1.5 billion; 0.050% of the portion
                                                    of the daily net assets exceeding $1.5 billion but not exceeding
                                                    $2 billion; 0.0475% of the portion of the daily net assets
                                                    exceeding $2 billion but not exceeding $2.5 billion; 0.045% of
                                                    the portion of the daily net assets exceeding $2.5 billion but
                                                    not exceeding $5 billion; 0.0425% of the portion of the daily net
                                                    assets exceeding $5 billion but not exceeding $7.5 billion;
                                                    0.040% of the portion of the daily net assets exceeding $7.5
                                                    billion but not exceeding $10 billion; 0.0375% of the portion of
                                                    the daily net assets exceeding $10 billion but not exceeding
                                                    $12.5 billion; and 0.035% of the portion of the daily net assets
                                                    exceeding $12.5 billion.
 
Morgan Stanley Dean Witter 
  Global Short-Term Income Fund Inc.                0.055% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.050% of the portion of the daily net assets
                                                    exceeding $500 million.
</TABLE>
 
                                      B-1
<PAGE>
<TABLE>
<S>                                                 <C>
Morgan Stanley Dean Witter 
  Hawaii Municipal Trust                            0.035% of the daily net assets.
 
Morgan Stanley Dean Witter 
  High Yield Securities Inc.                        0.050% of the portion of the daily net assets not exceeding $500
                                                    million; 0.0425% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $750 million; 0.0375% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; 0.035% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $2 billion; 0.0325%
                                                    of the portion of the daily net assets exceeding $2 billion but
                                                    not exceeding $3 billion; and 0.030% of the portion of daily net
                                                    assets exceeding $3 billion.
 
Morgan Stanley Dean Witter 
  Intermediate Income Securities                    0.060% of the portion of the daily net assets not exceeding $500
                                                    million; 0.050% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $750 million; 0.040% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; and 0.030% of the portion of the daily net
                                                    assets exceeding $1 billion.
 
Morgan Stanley Dean Witter 
  Limited Term Municipal Trust                      0.050% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Multi-State Municipal Series Trust                0.035% of the daily net assets.
  (10 Series)
 
Morgan Stanley Dean Witter 
  New York Tax-Free Income Fund                     0.055% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.0525% of the portion of the daily net assets
                                                    exceeding $500 million.
 
Morgan Stanley Dean Witter 
  Select Dimensions Investment Series--             0.039% of the daily net assets.
  North American Government 
  Securities Portfolio
 
Morgan Stanley Dean Witter 
  Select Municipal Reinvestment Fund                0.050% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Short-Term Bond Fund                              0.070% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Short-Term U.S. Treasury Trust                    0.035% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Tax-Exempt Securities Trust                       0.050% of the portion of the daily net assets not exceeding $500
                                                    million; 0.0425% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $750 million; 0.0375% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; and 0.035% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.25 billion;
                                                    .0325% of the portion of the daily net assets exceeding $1.25
                                                    billion.
</TABLE>
 
                                      B-2
<PAGE>
<TABLE>
<S>                                                 <C>
Morgan Stanley Dean Witter 
  U.S. Government Securities Trust                  0.050% of the portion of the daily net assets not exceeding $1
                                                    billion; 0.0475% of the portion of the daily net assets exceeding
                                                    $1 billion but not exceeding $1.5 billion; 0.045% of the portion
                                                    of the daily net assets exceeding $1.5 billion but not exceeding
                                                    $2 billion; 0.0425% of the portion of the daily net assets
                                                    exceeding $2 billion but not exceeding $2.5 billion; 0.040% of
                                                    the portion of the daily net assets exceeding $2.5 billion but
                                                    not exceeding $5 billion; 0.0375% of the portion of the daily net
                                                    assets exceeding $5 billion but not exceeding $7.5 billion;
                                                    0.035% of the portion of the daily net assets exceeding $7.5
                                                    billion but not exceeding $10 billion; 0.0325% of the portion of
                                                    the daily net assets exceeding $10 billion but not exceeding
                                                    $12.5 billion; and 0.030% of the portion of the daily net assets
                                                    exceeding $12.5 billion.
 
Morgan Stanley Dean Witter 
  Variable Investment Series--High 
  Yield Portfolio                                   0.050% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.0425% of the daily net assets exceeding $500
                                                    million.
 
  Quality Income Plus Portfolio                     0.050% of the portion of the daily the net assets up to $500
                                                    million; and 0.045% of the portion of the daily net assets
                                                    exceeds $500 million.
 
Morgan Stanley Dean Witter 
  World Wide Income Trust                           0.075% of the portion of the daily net assets up to $250 million;
                                                    0.060% of the portion of the daily net assets exceeding $250
                                                    million but not exceeding $500 million; 0.050% of the portion of
                                                    the daily net assets of the exceeding $500 million but not
                                                    exceeding $750 million; 0.040% of the portion of the daily net
                                                    assets exceeding $750 million but not exceeding $1 billion; and
                                                    0.030% of the portion of the daily net assets exceeding $1
                                                    billion.
 
Morgan Stanley Dean Witter 
  Worldwide High Income Fund                        0.060% of the daily net assets.
 
EQUITY FUNDS
- ------------ 
Morgan Stanley Dean Witter 
  Aggressive Equity Fund                            0.075% of the daily net assets.
 
Morgan Stanley Dean Witter 
  American Value Fund                               0.0625% of the portion of the daily net assets not exceeding $250
                                                    million; 0.050% of the portion of the daily net assets exceeding
                                                    $250 million but not exceeding $2.25 billion; 0.0475% of the
                                                    portion of the daily net assets exceeding $2.25 billion but not
                                                    exceeding $3.5 billion; 0.0450% of the portion of the daily net
                                                    assets exceeding $3.5 billion but not exceeding $4.5 billion; and
                                                    0.0425% of the portion of the daily net assets exceeding $4.5
                                                    billion.
 
Morgan Stanley Dean Witter 
  Balanced Growth Fund                              0.060% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Capital Appreciation Fund                         0.075% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.0725% of the portion of the daily net assets
                                                    exceeding $500 million.
</TABLE>
 
                                      B-3
<PAGE>
<TABLE>
<S>                                                 <C>
Morgan Stanley Dean Witter 
  Capital Growth Securities                         0.065% of the portion of the daily net assets not exceeding $500
                                                    million; 0.055% of the portion exceeding $500 million but not
                                                    exceeding $1 billion; 0.050% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.5 billion; and
                                                    0.0475% of the portion of the daily net assets exceeding $1.5
                                                    billion.
 
Morgan Stanley Dean Witter 
  Competitive Edge Fund,                            0.065% of the portion of the daily net assets not exceeding $1.5
  "BEST IDEAS" Portfolio                            billion; and 0.0625% of the portion of the daily net assets
                                                    exceeding $1.5 billion.
 
Morgan Stanley Dean Witter 
  Developing Growth Securities Trust                0.050% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.0475% of the portion of the daily net assets
                                                    exceeding $500 million.
 
Morgan Stanley Dean Witter 
  Dividend Growth Securities Inc.                   0.0625% of the portion of the daily net assets not exceeding $250
                                                    million; 0.050% of the portion of the daily net assets exceeding
                                                    $250 million but not exceeding $1 billion; 0.0475% of the portion
                                                    of the daily net assets exceeding $1 billion but not exceeding $2
                                                    billion; 0.045% of the portion of the daily net assets exceeding
                                                    $2 billion but not exceeding $3 billion; 0.0425% of the portion
                                                    of the daily net assets exceeding $3 billion but not exceeding $4
                                                    billion; 0.040% of the portion of the daily net assets exceeding
                                                    $4 billion but not exceeding $5 billion; 0.0375% of the portion
                                                    of the daily net assets exceeding $5 billion but not exceeding $6
                                                    billion; 0.035% of the portion of the daily net assets exceeding
                                                    $6 billion but not exceeding $8 billion; 0.0325% of the portion
                                                    of the daily net assets exceeding $8 billion but not exceeding
                                                    $10 billion; 0.030% of the portion of the daily net assets
                                                    exceeding $10 billion but not exceeding $15 billion; and 0.0275%
                                                    of the portion of the daily net assets exceeding $15 billion.
 
Morgan Stanley Dean Witter                          0.051% of the daily net assets.
  Equity Fund
 
Morgan Stanley Dean Witter 
  European Growth Fund Inc.                         0.057% of the portion of the daily net assets not exceeding $500
                                                    million; 0.054% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $2 billion; and 0.051% of the
                                                    portion of the daily net assets exceeding $2 billion.
 
Morgan Stanley Dean Witter 
  Financial Services Trust                          0.075% of the daily net assets.
 
Morgan Stanley Dean Witter Fund of Funds-
  Domestic Portfolio                                None
  International Portfolio                           None
</TABLE>
 
                                      B-4
<PAGE>
<TABLE>
<S>                                                 <C>
Morgan Stanley Dean Witter 
  Global Dividend Growth Securities                 0.075% of the portion of the daily net assets not exceeding $1
                                                    billion; 0.0725% of the portion of the daily net assets exceeding
                                                    $1 billion but not exceeding $1.5 billion; 0.070% of the portion
                                                    of the daily net assets exceeding $1.5 billion but not exceeding
                                                    $2.5 billion; 0.0675% of the portion of the daily net assets
                                                    exceeding $2.5 billion but not exceeding $3.5 billion; 0.0650% of
                                                    the portion of the daily net assets exceeding $3.5 billion but
                                                    not exceeding $4.5 billion; and 0.0625% of the portion of the
                                                    daily net assets exceeding $4.5 billion.
 
Morgan Stanley Dean Witter 
  Global Utilities Fund                             0.065% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.0625% of the portion of the daily net assets
                                                    exceeding $500 million.
 
Morgan Stanley Dean Witter 
  Growth Fund                                       0.048% of the portion of daily net assets not exceeding $750
                                                    million; 0.045% of the portion of daily net assets exceeding $750
                                                    million but not exceeding $1.5 billion; and 0.042% of the portion
                                                    of daily net assets exceeding $1.5 billion.
 
Morgan Stanley Dean Witter 
  Health Sciences Trust                             0.10% of the portion of daily net assets not exceeding $500
                                                    million; and 0.095% of the portion of daily net assets exceeding
                                                    $500 million.
 
Morgan Stanley Dean Witter 
  Income Builder Fund                               0.075% of the portion of the net assets not exceeding $500
                                                    million; and 0.0725% of the portion of daily net assets exceeding
                                                    $500 million.
 
Morgan Stanley Dean Witter 
  Information Fund                                  0.075% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.0725% of the portion of the daily net assets
                                                    exceeding $500 million.
 
Morgan Stanley Dean Witter 
  International Fund                                0.060% of the daily net assets.
 
Morgan Stanley Dean Witter 
  International SmallCap Fund                       0.069% of the daily net assets.
 
Morgan Stanley Dean Witter                          0.057% of the daily net assets.
  Japan Fund
 
Morgan Stanley Dean Witter 
  Managers Focus Fund                               0.0625% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Market Leader Trust                               0.075% of the daily net assets.
 
Morgan Stanley Dean Witter                          0.075 of the daily net assets.
  Mid-Cap Dividend Growth Securities
 
Morgan Stanley Dean Witter                          0.075% of the portion of the daily net assets not exceeding $500
  Mid-Cap Growth Fund                               million; and 0.0725% of the portion of the daily net assets
                                                    exceeding $500 million.
 
Morgan Stanley Dean Witter 
  Natural Resource Development                      0.0625% of the portion of the daily net assets not exceeding $250
  Securities Inc.                                   million and 0.050% of the portion of the daily net assets
                                                    exceeding $250 million.
</TABLE>
 
                                      B-5
<PAGE>
<TABLE>
<S>                                                 <C>
Morgan Stanley Dean Witter 
  Pacific Growth Fund Inc.                          0.057% of the portion of the daily net assets not exceeding $1
                                                    billion; 0.054% of the portion of the daily net assets exceeding
                                                    $1 billion but not exceeding $2 billion; and 0.051% of the
                                                    portion of the daily net assets exceeding $2 billion.
 
Morgan Stanley Dean Witter 
  Precious Metals and                               0.080% of the daily net assets.
  Minerals Trust
 
Morgan Stanley Dean Witter 
  Select Dimensions Investment Series--
  American Value Portfolio                          0.0625% of the daily net assets.
  Balanced Growth Portfolio                         0.065% of the daily net assets.
  Developing Growth Portfolio                       0.050% of the daily net assets.
  Diversified Income Portfolio                      0.040% of the daily net assets.
  Dividend Growth Portfolio                         0.0625% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.050% of the portion of the daily net assets
                                                    exceeding $500 million.
  Emerging Markets Portfolio                        0.075% of the daily net assets.
  Global Equity Portfolio                           0.10% of the daily net assets.
  Growth Portfolio                                  0.048% of the daily net assets.
  Mid-Cap Growth Portfolio                          0.075% of the daily net assets
  Utilities Portfolio                               0.065% of the daily net assets.
  Value-Added Market Portfolio                      0.050% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Special Value Fund                                0.075% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Strategist Fund                                   0.060% of the portion of the daily net assets not exceeding $500
                                                    million; 0.055% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $1 billion; 0.050% of the portion
                                                    of the daily net assets exceeding $1 billion but not exceeding
                                                    $1.5 billion; 0.0475% of the portion of the daily net assets
                                                    exceeding $1.5 billion but not exceeding $2.0 billion; and 0.045%
                                                    of the portion of the daily net assets exceeding $2.0 billion.
 
Morgan Stanley Dean Witter                          0.040% of the daily net assets.
  S&P 500 Index Fund
 
Morgan Stanley Dean Witter                          0.060% of the daily net assets.
  S&P 500 Select Fund
 
Morgan Stanley Dean Witter 
  Utilities Fund                                    0.065% of the portion of the daily net assets not exceeding $500
                                                    million; 0.055% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $1 billion; 0.0525% of the portion
                                                    of the daily net assets exceeding $1 billion but not exceeding
                                                    $1.5 billion; 0.050% of the portion of the daily net assets
                                                    exceeding $1.5 billion but not exceeding $2.5 billion; 0.0475% of
                                                    the portion of the daily net assets exceeding $2.5 billion but
                                                    not exceeding $3.5 billion; 0.045% of the portion of the daily
                                                    net assets exceeding $3.5 but not exceeding $5 billion; and
                                                    0.0425% of the daily net assets exceeding $5 billion.
</TABLE>
 
                                      B-6
<PAGE>
<TABLE>
<S>                                                 <C>
Morgan Stanley Dean Witter 
  Value Fund                                        0.060% of the daily net assets.
 
Morgan Stanley Dean Witter 
  Value-Added Market Series                         0.050% of the portion of the daily net assets not exceeding $500
                                                    million; 0.45% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $1 billion; 0.0425% of the portion
                                                    of the daily net assets exceeding $1.0 billion but not exceeding
                                                    $2.0 billion; and 0.040% of the portion of the daily net assets
                                                    exceeding $2 billion.
 
Morgan Stanley Dean Witter 
  Variable Investment Series--
  Capital Appreciation Portfolio                    0.075% of the daily net assets.
  Capital Growth Portfolio                          0.065% of the daily net assets.
  Competitive Edge "Best Ideas" Portfolio           0.065% of the daily net assets.
  Dividend Growth Portfolio                         0.0625% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.050% of the portion of the daily net assets
                                                    exceeding $500 million but not exceeding $1 billion; 0.0475% of
                                                    the portion of the daily net assets exceeding $1.0 billion but
                                                    not exceeding $2.0 billion; and 0.045% of the portion of the
                                                    daily net assets exceeding $2 billion.
  Equity Portfolio                                  0.050% of the portion of the daily net assets not exceeding $1
                                                    billion; and 0.0475% of the portion of the daily net assets
                                                    exceeding $1 billion.
  European Growth Portfolio                         0.057% of the portion of the daily net assets not exceeding $500
                                                    million; and 0.054% of the portion of the daily net assets
                                                    exceeding $500 million.
  Income Builder Portfolio                          0.075% of the daily net assets.
  Pacific Growth Portfolio                          0.057% of the daily net assets.
  S&P 500 Index Portfolio                           0.040% of the daily net assets.
  Strategist Portfolio                              0.050% of the daily net assets.
  Utilities Portfolio                               0.065% of the portion of the daily net assets not exceeding $500
                                                    million and 0.055% of the portion of the daily net assets
                                                    exceeding $500 million.
 
MONEY MARKET FUNDS
- ------------------ 
Active Assets Trusts:                               0.050% of the portion of the daily net assets not exceeding $500
  (1) Active Assets Money Trust                     million; 0.0425% of the portion of the daily net assets exceeding
  (2) Active Assets Tax-Free Trust                  $500 million but not exceeding $750 million; 0.0375% of the
  (3) Active Assets California Tax-Free Trust       portion of the daily net assets exceeding $750 million but not
  (4) Active Assets Government Securities Trust     exceeding $1 billion; 0.035% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.5 billion;
                                                    0.0325% of the portion of the daily net assets exceeding $1.5
                                                    billion but not exceeding $2 billion; 0.030% of the portion of
                                                    the daily net assets exceeding $2 billion but not exceeding $2.5
                                                    billion; 0.0275% of the portion of the daily net assets exceeding
                                                    $2.5 billion but not exceeding $3 billion; and 0.025% of the
                                                    portion of the daily net assets exceeding $3 billion.
</TABLE>
 
                                      B-7
<PAGE>
<TABLE>
<S>                                                 <C>
Morgan Stanley Dean Witter 
  California Tax-Free Daily                         0.050% of the portion of the daily net assets not exceeding $500
  Income Trust                                      million; 0.0425% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $750 million; 0.0375% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; 0.035% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.5 billion;
                                                    0.0325% of the portion of the daily net assets exceeding $1.5
                                                    billion but not exceeding $2 billion; 0.030% of the portion of
                                                    the daily net assets exceeding $2 billion but not exceeding $2.5
                                                    billion; 0.0275% of the portion of the daily net assets exceeding
                                                    $2.5 billion but not exceeding $3 billion; and 0.025% of the
                                                    portion of the daily net assets exceeding $3 billion.
 
Morgan Stanley Dean Witter 
  Liquid Asset Fund Inc.                            0.050% of the portion of the daily net assets not exceeding $500
                                                    million; 0.0425% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $750 million; 0.0375% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; 0.035% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.35 billion;
                                                    0.0325% of the portion of the daily net assets exceeding $1.35
                                                    billion but not exceeding $1.75 billion; 0.030% of the portion of
                                                    the daily net assets exceeding $1.75 billion but not exceeding
                                                    $2.15 billion; 0.0275% of the portion of the daily net assets
                                                    exceeding $2.15 billion but not exceeding $2.5 billion; 0.025% of
                                                    the portion of the daily net assets exceeding $2.5 billion but
                                                    not exceeding $15 billion; 0.0249% of the portion of the daily
                                                    net assets exceeding $15 billion but not exceeding $17.5 billion;
                                                    and 0.0248% of the portion of the daily net assets exceeding
                                                    $17.5 billion.
 
Morgan Stanley Dean Witter                          0.050% of the portion of the daily net assets not exceeding $500
  New York Municipal Money                          million; 0.0425% of the portion of the daily net assets exceeding
  Market Trust                                      $500 million but not exceeding $750 million; 0.0375% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; 0.035% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.5 billion;
                                                    0.0325% of the portion of the daily net assets exceeding $1.5
                                                    billion but not exceeding $2 billion; 0.030% of the portion of
                                                    the daily net assets exceeding $2 billion but not exceeding $2.5
                                                    billion; 0.0275% of the portion of the daily net assets exceeding
                                                    $2.5 billion but not exceeding $3 billion; and 0.025% of the
                                                    portion of the daily net assets exceeding $3 billion.
 
Morgan Stanley Dean Witter Select 
  Dimensions Investment Series--
  Money Market Portfolio                            0.050% of the daily net assets.
</TABLE>
 
                                      B-8
<PAGE>
<TABLE>
<S>                                                 <C>
Morgan Stanley Dean Witter                          0.050% of the portion of the daily net assets not exceeding $500
  Tax-Free Daily Income Trust                       million; 0.0425% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $750 million; 0.0375% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; 0.035% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.5 billion;
                                                    0.0325% of the portion of the daily net assets exceeding $1.5
                                                    billion but not exceeding $2 billion; 0.030% of the portion of
                                                    the daily net assets exceeding $2 billion but not exceeding $2.5
                                                    billion; 0.0275% of the portion of the daily net assets exceeding
                                                    $2.5 billion but not exceeding $3 billion; and 0.025% of the
                                                    portion of the daily net assets exceeding $3 billion.
 
Morgan Stanley Dean Witter 
  U.S. Government Money Market Trust                0.050% of the portion of the daily net assets not exceeding $500
                                                    million; 0.0425% of the portion of the daily net assets exceeding
                                                    $500 million but not exceeding $750 million; 0.0375% of the
                                                    portion of the daily net assets exceeding $750 million but not
                                                    exceeding $1 billion; 0.035% of the portion of the daily net
                                                    assets exceeding $1 billion but not exceeding $1.5 billion;
                                                    0.0325% of the portion of the daily net assets exceeding $1.5
                                                    billion but not exceeding $2 billion; 0.030% of the portion of
                                                    the daily net assets exceeding $2 billion but not exceeding $2.5
                                                    billion; 0.0275% of the portion of the daily net assets exceeding
                                                    $2.5 billion but not exceeding $3 billion; and 0.025% of the
                                                    portion of the daily net assets exceeding $3 billion.
 
Morgan Stanley Dean Witter 
  Variable Investment Series-- Money                0.050% of the daily net assets.
  Market Portfolio
</TABLE>
 
    Monthly compensation calculated weekly by applying the following annual
rates to a fund's weekly net assets:
 
<TABLE>
<S>                                            <C>
CLOSED-END FUNDS
 
Dean Witter Government                         0.060% of the average weekly net assets.
  Income Trust
 
High Income Advantage Trust                    0.075% of the portion of the average weekly net assets not
                                               exceeding $250 million; 0.060% of the portion of average
                                               weekly net assets exceeding $250 million and not exceeding
                                               $500 million; 0.050% of the portion of average weekly net
                                               assets exceeding $500 million and not exceeding $750
                                               million; 0.040% of the portion of average weekly net assets
                                               exceeding $750 million and not exceeding $1 billion; and
                                               0.030% of the portion of average weekly net assets exceeding
                                               $1 billion.
</TABLE>
 
                                      B-9
<PAGE>
<TABLE>
<S>                                            <C>
CLOSED-END FUNDS
 
High Income Advantage Trust II                 0.075% of the portion of the average weekly net assets not
                                               exceeding $250 million; 0.060% of the portion of average
                                               weekly net assets exceeding $250 million and not exceeding
                                               $500 million; 0.050% of the portion of average weekly net
                                               assets exceeding $500 million and not exceeding $750
                                               million; 0.040% of the portion of average weekly net assets
                                               exceeding $750 million and not exceeding $1 billion; and
                                               0.030% of the portion of average weekly net assets exceeding
                                               $1 billion.
 
High Income Advantage Trust III                0.075% of the portion of the average weekly net assets not
                                               exceeding $250 million; 0.060% of the portion of average
                                               weekly net assets exceeding $250 million and not exceeding
                                               $500 million; 0.050% of the portion of average weekly net
                                               assets exceeding $500 million and not exceeding $750
                                               million; 0.040% of the portion of the average weekly net
                                               assets exceeding $750 million and not exceeding $1 billion;
                                               and 0.030% of the portion of average weekly net assets
                                               exceeding $1 billion.
 
InterCapital Income Securities Inc.            0.050% of the average weekly net assets.
 
InterCapital Insured Municipal Bond Trust      0.035% of the average weekly net assets.
 
InterCapital Insured Municipal Trust           0.035% of the average weekly net assets.
 
InterCapital Insured Municipal Income Trust    0.035% of the average weekly net assets.
 
InterCapital California Insured Municipal      0.035% of the average weekly net assets.
  Income Trust
 
InterCapital Quality Municipal Investment      0.035% of the average weekly net assets.
  Trust
 
InterCapital New York Quality Municipal        0.035% of the average weekly net assets.
  Securities
 
InterCapital Quality Municipal Income Trust    0.035% of the average weekly net assets.
 
InterCapital Quality Municipal Securities      0.035% of the average weekly net assets.
 
InterCapital California Quality Municipal      0.035% of the average weekly net assets.
  Securities
 
InterCapital Insured Municipal Securities      0.035% of the average weekly net assets.
 
InterCapital Insured California Municipal      0.035% of the average weekly net assets.
  Securities
</TABLE>
 
                                      B-10



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