MUNDER FUNDS TRUST
497, 1998-06-02
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<PAGE>
                  THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS
                                          
                                  THE MUNDER FUNDS
                           SUPPLEMENT DATED JUNE 2, 1998
                        TO PROSPECTUS DATED OCTOBER 29, 1997
                            CLASS A, B AND C SHARES OF:
                                          
  MUNDER ACCELERATING GROWTH FUND, MUNDER BALANCED FUND, MUNDER GROWTH & INCOME
   FUND, MUNDER INTERNATIONAL EQUITY FUND, MUNDER MICRO-CAP EQUITY FUND, MUNDER
 MID-CAP GROWTH FUND, MUNDER MULTI-SEASON GROWTH FUND, MUNDER REAL ESTATE EQUITY
 INVESTMENT FUND, MUNDER SMALL-CAP VALUE FUND, MUNDER SMALL COMPANY GROWTH FUND,
 MUNDER VALUE FUND, MUNDER FRAMLINGTON EMERGING MARKETS FUND, MUNDER FRAMLINGTON
        HEALTHCARE FUND AND MUNDER FRAMLINGTON INTERNATIONAL GROWTH FUND
                                          

                             ADDITION OF CO-MANAGER FOR
                     MUNDER REAL ESTATE EQUITY INVESTMENT FUND

Robert E. Crosby is co-manager of the Real Estate Equity Investment Fund.  
Mr. Crosby has co-managed the Fund since March 1998 and was the Fund's 
primary analyst from 1996-1998.  Mr. Crosby has been with the Advisor since 
1993, and also serves as portfolio manager for separately managed 
institutional accounts.

                 REORGANIZATION OF MUNDER ACCELERATING GROWTH FUND

     The Board of Trustees of The Munder Funds Trust recently approved a 
proposal for the reorganization of the Munder Accelerating Growth Fund (the 
"Fund").  If the reorganization is approved by the shareholders of the Fund, 
the Fund's assets will be acquired by the Munder Multi-Season Growth Fund, 
shareholders of the Fund will become shareholders of the Munder Multi-Season 
Growth Fund and the Fund will be terminated.  A shareholder meeting to 
consider the reorganization has been scheduled for the Fall of 1998, and if 
approved the reorganization will be completed in the Fall of 1998.

                     CLOSING OF MUNDER MID-CAP GROWTH FUND AND 
                          MUNDER ACCELERATING GROWTH FUND

Shares of the Mid-Cap Growth Fund are no longer available to new accounts but 
additional investments may be made in existing accounts.  Effective July 1, 
1998, Shares of the Accelerating Growth Fund are no longer available to new 
accounts but additional investments may be made in existing accounts.

                                SALES CHARGE WAIVERS
                                          
The "PURCHASES AND EXCHANGES OF SHARES--What Price Do I Pay For 
Shares?--Sales Charge Waivers" section in the Prospectus is hereby 
supplemented as follows:

Holders of Class A, Class B and Class C Shares of the Short Term Treasury 
Fund as of June 2, 1998 may purchase Class A Shares of any of the above 
referenced Funds at Net Asset Value if such Shares are being purchased with 
proceeds from the redemption of shares of the Short Term Treasury Fund.

<PAGE>
                                    CDSC WAIVERS
                                          
The "REDEMPTIONS OF SHARES--What Price Do I Receive For Redeemed Shares? 
- --CDSC Waivers" section in the Prospectus is hereby supplemented as follows:

We will waive the CDSC payable upon redemption of shares for:

     -    Redemptions  limited to 10% per year of an account's Net Asset Value. 
          For example, if you maintain an annual balance of $10,000 you can 
          redeem up to $1,000 annually free of charge.

                      REDUCTION OF MINIMUM REQUIRED INVESTMENT

The minimum initial investment for Class A, Class B and Class C Shares of a 
Fund has been reduced to $250.  Subsequent investments must be at least $50.

                   CHANGE IN METHOD OF PORTFOLIO MANAGEMENT FOR 
                                MUNDER BALANCED FUND
                                          
The Balanced Fund is managed by a committee of professional portfolio 
managers of the Advisor.

               ADDITION OF CO-MANAGER FOR MUNDER SMALL-CAP VALUE FUND
                                AND MUNDER VALUE FUND

Brian Wall is co-manager of the Small-Cap Value and Value Funds.  Mr. Wall 
was formerly a primary analyst for the Funds.  Prior to joining the Advisor 
in 1995, he was a Senior Equity Analyst with Woodbridge Capital Management, 
Inc. (1994-1995) and an Assistant Vice President in Equity Research for 
Merrill Lynch, Pierce Fenner & Smith in New York (1992-1994).

                              PORTFOLIO MANAGEMENT OF 
                          MUNDER SMALL COMPANY GROWTH FUND

Carl Wilk and Michael P. Gura jointly manage the Small Company Growth Fund.  
Mr. Wilk, a Senior Portfolio Manager of the Advisor, has managed the Fund 
since October 1996 and was the Fund's primary analyst (1995 to 1996).  Prior 
to joining the Advisor in 1995, Mr. Wilk was a Senior Equity Research Analyst 
for the Fund at Woodbridge.  Mr. Gura has managed the Fund since March 1997.  
Prior to joining the Advisor in 1995, Mr. Gura was a Vice President and 
Senior Equity Analyst for the Fund at Woodbridge (1994-1995) and an 
investment officer for Manufacturer National Bank Trust Department 
(1989-1994).

                   QUALIFIED EMPLOYER SPONSORED RETIREMENT PLANS
                                          
Effective January 1, 1998, the "PURCHASES AND EXCHANGES OF SHARES--What Price 
Do I Pay For Shares?--Qualified Employer Sponsored Retirement Plans" section 
in the Prospectus is hereby deleted in its entirety and supplemented as 
follows:

<PAGE>

QUALIFIED EMPLOYER SPONSORED RETIREMENT PLANS

     We will waive the initial sales charge on purchases of Class A Shares by 
employer sponsored retirement plans that are qualified under Section 401(a) 
or Section 403(b) of the Code (each, a "Qualified Employee Benefit Plan") and 
that (1) invest $1,000,000 or more in Class A Shares of investment portfolios 
offered by the Trust, the Company or Framlington or (2) have at least 75 
eligible plan participants.  In addition, we will waive the CDSC of 1% 
charged on certain redemptions within one year of purchase for Qualified 
Employee Benefit Plan purchases that meet the above criteria.  A 1% 
commission will be paid by the Distributor to dealers and other entities (as 
permitted by applicable Federal and state law) who initiate and are 
responsible for Qualified Employee Benefit Plan purchases that meet the above 
criteria.  For purposes of this sales charge waiver, Simplified Employee 
Pension Plans ("SEPs"), Individual Retirement Accounts ("IRAs") and UPI Plans 
are not considered to be Qualified Employee Benefit Plans.

     We also will waive (i) the initial sales charge on Class A Shares on 
purchases by UPI Plans for employees participating in an employer-sponsored 
or administered retirement program operating under Section 408A of the Code 
and (ii) the CDSC of 1% imposed on certain redemptions within one year of 
purchase for these accounts.  The Distributor will pay a 1% commission to 
dealers and others (as permitted by applicable Federal and state law) who 
initiate and are responsible for UPI Plan purchases.

     We will waive the initial sales charge for all the investments by 
Merrill Lynch Plans if (i) the Plan is recordkept on a daily valuation basis 
by Merrill Lynch Group Employee Services ("Merrill Lynch") and, on the date 
the plan sponsor ("the Plan Sponsor") signs the Merrill Lynch Recordkeeping 
Service Agreement, the Plan has $3 million or more in assets invested in 
broker/dealer funds not advised or managed by Merrill Lynch Asset Management, 
L.P. ("MLAM") that are made available pursuant to a Services Agreement 
between Merrill Lynch and the Funds' principal underwriter or distributor and 
in funds advised or managed by MLAM (collectively, the "Applicable 
Investments"); or (ii) the Plan is recordkept on a daily valuation basis by 
an independent recordkeeper whose services are provided through a contract or 
alliance arrangement with Merrill Lynch, and on the date the Plan Sponsor 
signs the Merrill Lynch Recordkeeping Service Agreement, the Plan has $3 
million or more in assets, excluding money market funds, invested in 
Applicable Investments; or (iii) the Plan has 500 or more eligible employees, 
as determined by the Merrill Lynch plan conversion manager, on the date the 
Plan Sponsor signs the Merrill Lynch Recordkeeping Service Agreement.

                                 ADMINISTRATION FEE
                                          
The first paragraph under "STRUCTURE AND MANAGEMENT OF THE FUNDS--Who Manages 
and Services the Funds?--Administrator" in the Prospectus is hereby deleted 
in its entirety and supplemented as follows:

ADMINISTRATOR

     State Street Bank and Trust Company ("State Street" or "Administrator") 
is the Funds' administrator.  State Street is located at 225 Franklin Street, 
Boston, Massachusetts 02110.  State Street generally assists the Company, the 
Trust and Framlington in all aspects of its administration and operations 
including the maintenance of financial records and fund accounting.  As 
compensation for its services for the Company, the Trust and Framlington, 
State Street is entitled to receive fees, based on the


<PAGE>

aggregate daily net assets of the Funds and certain other investment 
portfolios that are advised by the Advisor for which it provides services, 
computed daily and payable monthly at the annual rate of 0.113% on the first 
$2.8 billion of net assets, plus 0.103% on the next $2.2 billion of net 
assets, plus 0.101% on the next $2.5 billion of net assets, plus 0.095% on 
the next $2.5 billion of net assets, plus 0.080% on the next $2.5 billion of 
net assets, plus 0.070% on all net assets in excess of $12.5 billion (with a 
$75,000 minimum fee per annum in the aggregate for all portfolios with 
respect to the Administrator).  If the assets of the Framlington Funds do not 
exceed $120 million, the ultimate rate charged the Framlington Funds will be 
reduced by their pro-rata portion of the total fees if calculated at the 
rates of 0.062% of the first $2.8 billion of net assets, plus 0.052% of the 
next $2.2 billion of net assets, plus 0.050% of all net assets in excess of 
$5 billion.


<PAGE>

             THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                            THE MUNDER FUNDS
                    SUPPLEMENT DATED JUNE 2, 1998
                 TO PROSPECTUS DATED OCTOBER 29, 1997
                           CLASS K SHARES OF:

  MUNDER ACCELERATING GROWTH FUND, MUNDER BALANCED FUND, MUNDER GROWTH & INCOME
    FUND, MUNDER INDEX 500 FUND, MUNDER INTERNATIONAL EQUITY FUND, MUNDER 
  MICRO-CAP EQUITY FUND, MUNDER MID-CAP GROWTH FUND, MUNDER MULTI-SEASON 
 GROWTH FUND, MUNDER REAL ESTATE EQUITY INVESTMENT FUND, MUNDER SMALL-CAP VALUE
  FUND, MUNDER SMALL COMPANY GROWTH FUND, MUNDER VALUE FUND, MUNDER FRAMLINGTON
  EMERGING MARKETS FUND, MUNDER FRAMLINGTON HEALTHCARE FUND, MUNDER FRAMLINGTON
    INTERNATIONAL GROWTH FUND, MUNDER BOND FUND, MUNDER INTERMEDIATE BOND FUND,
   MUNDER INTERNATIONAL BOND FUND, MUNDER U.S. GOVERNMENT INCOME FUND, MUNDER 
  MICHIGAN TRIPLE TAX-FREE BOND FUND, MUNDER TAX-FREE BOND FUND, MUNDER TAX-FREE
      INTERMEDIATE BOND FUND, MUNDER SHORT TERM TREASURY FUND, MUNDER CASH 
   INVESTMENT FUND, MUNDER TAX-FREE MONEY MARKET FUND AND MUNDER U.S. TREASURY
    MONEY MARKET FUND


                            ADDITION OF CO-MANAGER FOR 
                     MUNDER REAL ESTATE EQUITY INVESTMENT FUND

Robert E. Crosby is co-manager of the Real Estate Equity Investment Fund.  
Mr. Crosby has co-managed the Fund since March 1998 and was the Fund's 
primary analyst from 1996-1998.  Mr. Crosby has been with the Advisor since 
1993, and also serves as portfolio manager for separately managed 
institutional accounts.

                 REORGANIZATION OF MUNDER ACCELERATING GROWTH FUND

     The Board of Trustees of The Munder Funds Trust recently approved a 
proposal for the reorganization of the Munder Accelerating Growth Fund (the 
"Fund").  If the reorganization is approved by the shareholders of the Fund, 
the Fund's assets will be acquired by the Munder Multi-Season Growth Fund, 
shareholders of the Fund will become shareholders of the Munder Multi-Season 
Growth Fund and the Fund will be terminated.  A shareholder meeting to 
consider the reorganization has been scheduled for the Fall of 1998, and if 
approved the reorganization will be completed in the Fall of 1998.

    CLOSING OF MUNDER MID-CAP GROWTH FUND, MUNDER ACCELERATING GROWTH FUND AND
                          MUNDER SHORT TERM TREASURY FUND

Shares of the Mid-Cap Growth Fund are no longer available to new accounts but 
additional investments may be made in existing accounts.  Effective July 1, 
1998, Shares of the Accelerating Growth Fund are no longer available to new 
accounts but additional investments may be made in existing accounts.  The 
Class K Shares of the Short Term Treasury Fund are closed to all investments.

<PAGE>
                   CHANGE IN METHOD OF PORTFOLIO MANAGEMENT FOR 
                                MUNDER BALANCED FUND
                                          
The Balanced Fund is managed by a committee of professional portfolio 
managers of the Advisor.

              ADDITION OF CO-MANAGER FOR MUNDER SMALL-CAP VALUE FUND
                              AND MUNDER VALUE FUND

Brian Wall is co-manager of the Small-Cap Value and Value Funds.  Mr. Wall 
was formerly a primary analyst for the Funds.  Prior to joining the Advisor 
in 1995, he was a Senior Equity Analyst with Woodbridge Capital Management, 
Inc. (1994-1995) and an Assistant Vice President in Equity Research for 
Merrill Lynch, Pierce Fenner & Smith in New York (1992-1994).
                                          
                              PORTFOLIO MANAGEMENT OF 
                          MUNDER SMALL COMPANY GROWTH FUND

Carl Wilk and Michael P. Gura jointly manage the Small Company Growth Fund.  
Mr. Wilk, a Senior Portfolio Manager of the Advisor, has managed the Fund 
since October 1996 and was the Fund's primary analyst (1995 to 1996).  Prior 
to joining the Advisor in 1995, Mr. Wilk was a Senior Equity Research Analyst 
for the Fund at Woodbridge.  Mr. Gura has managed the Fund since March 1997.  
Prior to joining the Advisor in 1995, Mr. Gura was a Vice President and 
Senior Equity Analyst for the Fund at Woodbridge (1994-1995) and an 
investment officer for Manufacturer National Bank Trust Department 
(1989-1994).

                                 ADMINISTRATION FEE
                                          
The first paragraph under "STRUCTURE AND MANAGEMENT OF THE FUNDS--Who Manages 
and Services the Funds?--Administrator" in the Prospectus is hereby deleted 
in its entirety and supplemented as follows:

ADMINISTRATOR

     State Street Bank and Trust Company ("State Street" or "Administrator") 
is the Funds' administrator.  State Street is located at 225 Franklin Street, 
Boston, Massachusetts 02110.  State Street generally assists the Company, the 
Trust and Framlington in all aspects of its administration and operations 
including the maintenance of financial records and fund accounting.  As 
compensation for its services for the Company, the Trust and Framlington, 
State Street is entitled to receive fees, based on the aggregate daily net 
assets of the Funds and certain other investment portfolios that are advised 
by the Advisor for which it provides services, computed daily and payable 
monthly at the annual rate of 0.113% on the first $2.8 billion of net assets, 
plus 0.103% on the next $2.2 billion of net assets, plus 0.101% on the next 
$2.5 billion of net assets, plus 0.095% on the next $2.5 billion of net 
assets, plus 0.080% on the next $2.5 billion of net assets, plus 0.070% on 
all net assets in excess of $12.5 billion (with a $75,000 minimum fee per 
annum in the aggregate for all portfolios with respect to the Administrator). 
If the assets of the Framlington Funds do not exceed $120 million, the 
ultimate rate charged the Framlington Funds will be reduced by their pro-rata 
portion of the total fees if calculated at the rates of 0.062% of the first 
$2.8 billion of net assets, plus 0.052% of the next $2.2 billion of net 
assets, plus 0.050% of all net assets in excess of $5 billion.


<PAGE>

          THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                         THE MUNDER FUNDS
                 SUPPLEMENT DATED JUNE 2, 1998
             TO PROSPECTUS DATED OCTOBER 29, 1997
                        CLASS Y SHARES OF:

 MUNDER ACCELERATING GROWTH FUND, MUNDER BALANCED FUND, MUNDER GROWTH & INCOME
  FUND, MUNDER INTERNATIONAL EQUITY FUND, MUNDER MICRO-CAP EQUITY FUND, MUNDER
 MID-CAP GROWTH FUND, MUNDER MULTI-SEASON GROWTH FUND, MUNDER REAL ESTATE EQUITY
 INVESTMENT FUND, MUNDER SMALL-CAP VALUE FUND, MUNDER SMALL COMPANY GROWTH FUND,
 MUNDER VALUE FUND, MUNDER FRAMLINGTON EMERGING MARKETS FUND, MUNDER FRAMLINGTON
 HEALTHCARE FUND, MUNDER FRAMLINGTON INTERNATIONAL GROWTH FUND, MUNDER BOND 
  FUND, MUNDER INTERMEDIATE BOND FUND, MUNDER INTERNATIONAL BOND FUND,
  MUNDER U.S. GOVERNMENT INCOME FUND, MUNDER MICHIGAN TRIPLE TAX-FREE BOND FUND,
 MUNDER TAX-FREE BOND FUND, MUNDER TAX-FREE INTERMEDIATE BOND FUND, MUNDER SHORT
  TERM TREASURY FUND, MUNDER CASH INVESTMENT FUND, MUNDER MONEY MARKET FUND,
  MUNDER TAX-FREE MONEY MARKET FUND AND MUNDER U.S. TREASURY MONEY MARKET FUND


                    ADDITION OF CO-MANAGER FOR 
             MUNDER REAL ESTATE EQUITY INVESTMENT FUND

Robert E. Crosby is co-manager of the Real Estate Equity Investment Fund.  
Mr. Crosby has co-managed the Fund since March 1998 and was the Fund's 
primary analyst from 1996-1998.  Mr. Crosby has been with Munder Capital 
Management since 1993, and also serves as portfolio manager for separately 
managed institutional accounts.

                 REORGANIZATION OF MUNDER ACCELERATING GROWTH FUND

     The Board of Trustees of The Munder Funds Trust recently approved a 
proposal for the reorganization of the Munder Accelerating Growth Fund (the 
"Fund").  If the reorganization is approved by the shareholders of the Fund, 
the Fund's assets will be acquired by the Munder Multi-Season Growth Fund, 
shareholders of the Fund will become shareholders of the Munder Multi-Season 
Growth Fund and the Fund will be terminated.  A shareholder meeting to 
consider the reorganization has been scheduled for the Fall of 1998, and if 
approved the reorganization will be completed in the Fall of 1998.

                     CLOSING OF MUNDER MID-CAP GROWTH FUND AND                
                         MUNDER ACCELERATING GROWTH FUND 

Shares of the Mid-Cap Growth Fund are no longer available to new accounts but 
additional investments may be made in existing accounts.  Effective July 1, 
1998, Shares of the Accelerating Growth Fund are no longer available to new 
accounts but additional investments may be made in existing accounts.  
                                          
<PAGE>
                                          
                   CHANGE IN METHOD OF PORTFOLIO MANAGEMENT FOR 
                                MUNDER BALANCED FUND
                                          
The Balanced Fund is managed by a committee of professional portfolio 
managers of the Advisor.

               ADDITION OF CO-MANAGER FOR MUNDER SMALL-CAP VALUE FUND
                                AND MUNDER VALUE FUND

Brian Wall is co-manager of the Small-Cap Value and Value Funds.  Mr. Wall 
was formerly a primary analyst for the Funds.  Prior to joining the Advisor 
in 1995, he was a Senior Equity Analyst with Woodbridge Capital Management, 
Inc. (1994-1995) and an Assistant Vice President in Equity Research for 
Merrill Lynch, Pierce Fenner & Smith in New York (1992-1994).
                                          
                              PORTFOLIO MANAGEMENT OF 
                          MUNDER SMALL COMPANY GROWTH FUND

Carl Wilk and Michael P. Gura jointly manage the Small Company Growth Fund.  
Mr. Wilk, a Senior Portfolio Manager of the Advisor, has managed the Fund 
since October 1996 and was the Fund's primary analyst (1995 to 1996).  Prior 
to joining the Advisor in 1995, Mr. Wilk was a Senior Equity Research Analyst 
for the Fund at Woodbridge.  Mr. Gura has managed the Fund since March 1997.  
Prior to joining the Advisor in 1995, Mr. Gura was a Vice President and 
Senior Equity Analyst for the Fund at Woodbridge (1994-1995) and an 
investment officer for Manufacturer National Bank Trust Department 
(1989-1994).

                                 ADMINISTRATION FEE
                                          
The first paragraph under "STRUCTURE AND MANAGEMENT OF THE FUNDS-- Who 
Manages and Services the Funds?--Administrator" in the Prospectus is hereby 
deleted in its entirety and supplemented as follows:

ADMINISTRATOR

     State Street Bank and Trust Company ("State Street" or "Administrator") 
is the Funds' administrator.  State Street is located at 225 Franklin Street, 
Boston, Massachusetts 02110.  State Street generally assists the Company, the 
Trust and Framlington in all aspects of its administration and operations 
including the maintenance of financial records and fund accounting.  As 
compensation for its services for the Company, the Trust and Framlington, 
State Street is entitled to receive fees, based on the aggregate daily net 
assets of the Funds and certain other investment portfolios that are advised 
by the Advisor for which it provides services, computed daily and payable 
monthly at the annual rate of 0.113% on the first $2.8 billion of net assets, 
plus 0.103% on the next $2.2 billion of net assets, plus 0.101% on the next 
$2.5 billion of net assets, plus 0.095% on the next $2.5 billion of net 
assets, plus 0.080% on the next $2.5 billion of net assets, plus 0.070% on 
all net assets in excess of $12.5 billion (with a $75,000 minimum fee per 
annum in the aggregate for all portfolios with respect to the Administrator). 
If the assets of the Framlington Funds do not exceed $120 million, the 
ultimate rate charged the Framlington Funds will be reduced by their pro-rata 
portion of the total fees if calculated at the rates of 0.062% of the first 
$2.8 billion of net assets, plus 0.052% of the next $2.2 billion of net 
assets, plus 0.050% of all net assets in excess of $5 billion.

<PAGE>


           THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                            THE MUNDER FUNDS
                     SUPPLEMENT DATED JUNE 2, 1998
                 TO PROSPECTUS DATED OCTOBER 29, 1997
                     CLASS A, B AND C SHARES OF:

                        THE MUNDER INDEX 500 FUND



                         APPLICABLE SALES CHARGE

Effective July 1, 1998, the "PURCHASES AND EXCHANGES OF SHARES--What Price Do 
I Pay for Shares?--Applicable Sales Charge" section in the Prospectus is 
deleted in its entirety and supplemented as follows:

     APPLICABLE SALES CHARGE. Except in the circumstances described below, 
you must pay a sales charge at the time of purchase of Class A Shares. The 
sales charge as a percentage of your investment decreases as the amount you 
invest increases. The current sales charge rates and commissions paid to 
selected dealers are as follows:

<TABLE>
<CAPTION>
                                                                                 DISCOUNT TO
                                                   SALES CHARGE                SELECTED DEALERS
                                               AS A PERCENTAGE OF             AS A PERCENTAGE OF
                                       YOUR INVESTMENT    NET ASSET VALUE        INVESTMENT
                                       ---------------    ---------------        ----------
<S>                                      <C>               <C>                  <C>
Less than $100,000 ..................      2.50%           2.56%                 2.25%
$100,000 but less than $250,000 .....      2.00%           2.04%                 1.75%
$250,000 but less than $500,000 .....      1.50%           1.52%                 1.25%
$500,000 but less than $1,000,000....      1.00%           1.01%                  .75%
$1,000,000 but less than $3,000,000..      None*           None*                  .10%
$3,000,000 but less than $5,000,000..      None*           None*                  .05%
$5,000,000 or more ..................      None*           None*                  None
</TABLE>

- ------------
*    There is no initial sales charge on purchases of $1 million or more of 
Class A Shares of the Fund; however, a CDSC in the amount of the Discount to 
Selected Dealers shown above will be imposed on the lower of the original 
purchase price or the net asset value of the shares at the time of redemption 
if such shares are redeemed within one year after the date of purchase.  

     The Distributor may pay the entire commission to dealers.  If that 
occurs, the dealer may be considered an "underwriter" under Federal 
securities laws.

                                SALES CHARGE WAIVERS
                                          
The "PURCHASES AND EXCHANGES OF SHARES--What Price Do I Pay For 
Shares?--Sales Charge Waivers" section in the Prospectus is hereby 
supplemented as follows:

Holders of Class A, Class B and Class C Shares of the Short Term Treasury 
Fund as of June 2, 1998 may purchase Class A Shares of the above referenced 
Fund at Net Asset Value if such Shares are being purchased with proceeds from 
the redemption of shares of the Short Term Treasury Fund.

<PAGE>

                   QUALIFIED EMPLOYER SPONSORED RETIREMENT PLANS
                                          
Effective July 1, 1998, the "PURCHASES AND EXCHANGES OF SHARES--What Price Do 
I Pay For Shares?--Qualified Employer Sponsored Retirement Plans" section in 
the Prospectus is deleted in its entirety and supplemented as follows:

QUALIFIED EMPLOYER SPONSORED RETIREMENT PLANS

     We will waive the initial sales charge on Class A Shares of the Fund for 
all investments by:  (i)  employer sponsored retirement plans that are 
qualified under Section 401(a) or Section 403(b) of the Code; (ii) employees 
participating in an employer-sponsored or administered retirement program 
operating under Section 408A of the Code and (iii) UPI Plans.  In addition, 
the CDSC of up to 0.20% imposed on certain redemptions of Class A Shares of 
the Fund within one year of purchase will be waived for such accounts.  The 
Distributor will pay the following commissions to dealers and other entities 
(as permitted by applicable Federal and state law) who initiate and are 
responsible for purchases of Class A Shares of the Fund by such accounts:

<TABLE>
<CAPTION>
                                             Discount to Dealer or Entity
          Amount of Purchase               as a Percentage of Offering Price
         -------------------               ---------------------------------
<S>                                        <C>
Less than $100,000,000 ...............                   0.15%
$1,000,000 but less than $3,000,000...                   0.10%
$3,000,000 but less than $5,000,000 ..                   0.05%
$5,000,000 or more ...................                   None
</TABLE>

     The initial sales charge will be waived for all the investments by 
Merrill Lynch Plans if (i) the Plan is recordkept on a daily valuation basis 
by Merrill Lynch Group Employee Services ("Merrill Lynch") and, on the date 
the plan sponsor ("the Plan Sponsor") signs the Merrill Lynch Recordkeeping 
Service Agreement, the Plan has $3 million or more in assets invested in 
broker/dealer funds not advised or managed by Merrill Lynch Asset Management, 
L.P. ("MLAM") that are made available pursuant to a Services Agreement 
between Merrill Lynch and the Funds' principal underwriter or distributor and 
in funds advised or managed by MLAM (collectively, the "Applicable 
Investments"); or (ii) the Plan is recordkept on a daily valuation basis by 
an independent recordkeeper whose services are provided through a contract or 
alliance arrangement with Merrill Lynch, and on the date the Plan Sponsor 
signs the Merrill Lynch Recordkeeping Service Agreement, the Plan has 
$3 million or more in assets, excluding money market funds, invested in 
Applicable Investments; or (iii) the Plan has 500 or more eligible employees, 
as determined by the Merrill Lynch plan conversion manager, on the date the 
Plan Sponsor signs the Merrill Lynch Recordkeeping Service Agreement.

                                    CDSC WAIVERS
                                          
The "REDEMPTIONS OF SHARES--What Price Do I Receive For Redeemed 
Shares?--CDSC Waivers" section in the Prospectus is hereby supplemented as 
follows:

We will waive the CDSC payable upon redemption of shares for:

<PAGE>

     -    Redemptions limited to 10% per year of an account's Net Asset 
          Value. For example, if you maintain an annual balance of 
          $10,000 you can redeem up to $1,000 annually free of charge.

                      REDUCTION OF MINIMUM REQUIRED INVESTMENT

The minimum initial investment for Class A, Class B and Class C Shares of the 
Fund has been reduced to $250.  Subsequent investments must be at least $50.

                                 ADMINISTRATION FEE
                                          
The first paragraph under "STRUCTURE AND MANAGEMENT OF THE FUND--Who Manages 
and Services the Fund?--Administrator" in the Prospectus is hereby deleted in 
its entirety and supplemented as follows:

ADMINISTRATOR

     State Street Bank and Trust Company ("State Street" or "Administrator") 
is the Fund's administrator. State Street is located at 225 Franklin Street, 
Boston, Massachusetts 02110. State Street generally assists the Trust in all 
aspects of its administration and operations including the maintenance of 
financial records and fund accounting. As compensation for its services, 
State Street is entitled to receive fees, based on the aggregate daily net 
assets of the Fund and certain other investment portfolios that are advised 
by the Advisor for which it provides services, computed daily and payable 
monthly at the annual rate of 0.113% on the first $2.8 billion of net assets, 
plus 0.103% on the next $2.2 billion of net assets, plus 0.101% on the next 
$2.5 billion of net assets, plus 0.095% on the next $2.5 billion of net 
assets, plus 0.080% on the next $2.5 billion of net assets, plus 0.070% on 
all net assets in excess of $12.5 billion (with a $75,000 minimum fee per 
annum in the aggregate for all portfolios with respect to the Administrator).

<PAGE>

             THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                            THE MUNDER FUNDS
                     SUPPLEMENT DATED JUNE 2, 1998
                TO PROSPECTUS DATED OCTOBER 29, 1997
                    CLASS A, B AND C SHARES OF:

             MUNDER CASH INVESTMENT FUND, MUNDER MONEY MARKET FUND, 
  MUNDER TAX-FREE MONEY MARKET FUND AND MUNDER U.S. TREASURY MONEY MARKET FUND


                            CDSC WAIVERS
                                          
The "REDEMPTIONS OF SHARES--What Price Do I Receive For Redeemed Shares?--CDSC 
Waivers" section in the Prospectus is hereby supplemented as follows:

We will waive the CDSC payable upon redemption of shares for:

     -    Redemptions  limited to 10% per year of an account's Net Asset Value. 
          For example, if you maintain an annual balance of $10,000 you can 
          redeem up to $1,000 annually free of charge.

               REDUCTION OF MINIMUM REQUIRED INVESTMENT

The minimum initial investment for Class A Shares of a Trust Fund has been 
reduced to $250.  Subsequent investments must be at least $50.

                         ADMINISTRATION FEE
                                          
The first paragraph under "STRUCTURE AND MANAGEMENT OF THE FUNDS--Who Manages 
and Services the Funds?--Administrator" in the Prospectus is hereby deleted 
in its entirety and supplemented as follows:

ADMINISTRATOR

     State Street Bank and Trust Company ("State Street" or "Administrator") 
is the Funds' administrator.  State Street is located at 225 Franklin Street, 
Boston, Massachusetts 02110.  State Street generally assists the Company, the 
Trust and Framlington in all aspects of its administration and operations 
including the maintenance of financial records and fund accounting.  As 
compensation for its services, State Street is entitled to receive fees, 
based on the aggregate daily net assets of the Funds and certain other 
investment portfolios that are advised by the Advisor for which it provides 
services, computed daily and payable monthly at the annual rate of 0.113% on 
the first $2.8 billion of net assets, plus 0.103% on the next $2.2 billion of 
net assets, plus 0.101% on the next $2.5 billion of net assets, plus 0.095% 
on the next $2.5 billion of net assets, plus 0.080% on the next $2.5 billion 
of net assets, plus 0.070% on all net assets in excess of $12.5 billion (with 
a $75,000 minimum fee per annum in the aggregate for all portfolios with 
respect to the Administrator).


<PAGE>

            THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                          THE MUNDER FUNDS
                    SUPPLEMENT DATED JUNE 2, 1998
              TO PROSPECTUS DATED OCTOBER 29, 1997
                  CLASS A, B AND C SHARES OF:

  MUNDER BOND FUND, MUNDER INTERMEDIATE BOND FUND, MUNDER INTERNATIONAL 
   BOND FUND, MUNDER U.S. GOVERNMENT INCOME FUND, MUNDER MICHIGAN TRIPLE
   TAX-FREE BOND FUND, MUNDER TAX-FREE BOND FUND, MUNDER TAX-FREE 
      INTERMEDIATE BOND FUND AND MUNDER SHORT TERM TREASURY FUND


          CLOSING OF CLASSES A, B AND C OF MUNDER SHORT TERM TREASURY FUND

The Class A, Class B and Class C Shares of the Short Term Treasury Fund are 
closed to all investments. 

             WAIVER OF SALES CHARGE OF MUNDER SHORT TERM TREASURY FUND

The contingent deferred sales charge imposed on redemptions for current 
holders of Class B or Class C Shares of the Short Term Treasury Fund is being 
waived. Current holders of Class A, Class B or Class C Shares of the Short 
Term Treasury Fund may purchase Class A Shares of any Fund of the Company, 
the Trust or Framlington at Net Asset Value if such shares are being 
purchased with proceeds from the redemption of shares of the Short Term 
Treasury Fund.

                                    CDSC WAIVERS
                                          
The "REDEMPTIONS OF SHARES--What Price Do I Receive For Redeemed Shares?--CDSC 
Waivers" section in the Prospectus is hereby supplemented as follows:

We will waive the CDSC payable upon redemption of shares for:

     -    Redemptions  limited to 10% per year of an account's Net Asset Value.
          For example, if you maintain an annual balance of $10,000 you can 
          redeem up to $1,000 annually free of charge.


                      REDUCTION OF MINIMUM REQUIRED INVESTMENT

The minimum initial investment for Class A, Class B and Class C Shares of a 
Fund has been reduced to $250.  Subsequent investments must be at least $50.

                   QUALIFIED EMPLOYER SPONSORED RETIREMENT PLANS
                                          
Effective January 1, 1998, "PURCHASES AND EXCHANGES OF SHARES--What Price Do 
I Pay For Shares? --Qualified Employer Sponsored Retirement Plans" section in 
the Prospectus is hereby deleted in its entirety and supplemented as follows: 

<PAGE>

QUALIFIED EMPLOYER SPONSORED RETIREMENT PLANS

     We will waive the initial sales charge on purchases of Class A Shares by 
employer sponsored retirement plans that are qualified under Section 401(a) 
or Section 403(b) of the Code (each, a "Qualified Employee Benefit Plan") and 
that (1) invest $1,000,000 or more in Class A Shares of investment portfolios 
offered by the Trust, the Company or Framlington or (2) have at least 75 
eligible plan participants.  In addition, we will waive the CDSC of 1% 
charged on certain redemptions within one year of purchase for Qualified 
Employee Benefit Plan purchases that meet the above criteria.  A 1% 
commission will be paid by the Distributor to dealers and other entities (as 
permitted by applicable Federal and state law) who initiate and are 
responsible for Qualified Employee Benefit Plan purchases that meet the above 
criteria.  For purposes of this sales charge waiver, Simplified Employee 
Pension Plans ("SEPs"), Individual Retirement Accounts ("IRAs"), UPI Plans 
and Merrill Lynch Plans are not considered to be Qualified Employee Benefit 
Plans.

     We also will waive (i) the initial sales charge on Class A Shares on 
purchases by UPI Plans for employees participating in an employer-sponsored 
or administered retirement program operating under Section 408A of the Code 
and (ii) the CDSC of 1% imposed on certain redemptions within one year of 
purchase for these accounts.  The Distributor will pay a 1% commission to 
dealers and others (as permitted by applicable Federal and state law) who 
initiate and are responsible for UPI Plan purchases.

     We will waive the initial sales charge for all the investments by 
Merrill Lynch Plans if (i) the Plan is recordkept on a daily valuation basis 
by Merrill Lynch Group Employee Services ("Merrill Lynch") and, on the date 
the plan sponsor ("the Plan Sponsor") signs the Merrill Lynch Recordkeeping 
Service Agreement, the Plan has $3 million or more in assets invested in 
broker/dealer funds not advised or managed by Merrill Lynch Asset Management, 
L.P. ("MLAM") that are made available pursuant to a Services Agreement 
between Merrill Lynch and the Funds' principal underwriter or distributor and 
in funds advised or managed by MLAM (collectively, the "Applicable 
Investments"); or (ii) the Plan is recordkept on a daily valuation basis by 
an independent recordkeeper whose services are provided through a contract or 
alliance arrangement with Merrill Lynch, and on the date the Plan Sponsor 
signs the Merrill Lynch Recordkeeping Service Agreement, the Plan has $3 
million or more in assets, excluding money market funds, invested in 
Applicable Investments; or (iii) the Plan has 500 or more eligible employees, 
as determined by the Merrill Lynch plan conversion manager, on the date the 
Plan Sponsor signs the Merrill Lynch Recordkeeping Service Agreement.

                                 ADMINISTRATION FEE
                                          
The first paragraph under "STRUCTURE AND MANAGEMENT OF THE FUNDS--Who Manages 
and Services the Funds?--Administrator" in the Prospectus is hereby deleted in 
its entirety and supplemented as follows:

ADMINISTRATOR

     State Street Bank and Trust Company ("State Street" or "Administrator") 
is the Funds' administrator.  State Street is located at 225 Franklin Street, 
Boston, Massachusetts 02110.  State Street generally assists the Company, the 
Trust and Framlington in all aspects of its administration and operations 
including the maintenance of financial records and fund accounting.  As 
compensation for its services, State Street is entitled to receive fees, 
based on the aggregate daily net assets of the Funds and

<PAGE>

certain other investment portfolios that are advised by the Advisor for which 
it provides services, computed daily and payable monthly at the annual rate 
of 0.113% on the first $2.8 billion of net assets, plus 0.103% on the next 
$2.2 billion of net assets, plus 0.101% on the next $2.5 billion of net 
assets, plus 0.095% on the next $2.5 billion of net assets, plus 0.080% on 
the next $2.5 billion of net assets, plus 0.070% on all net assets in excess 
of $12.5 billion (with a $75,000 minimum fee per annum in the aggregate for 
all portfolios with respect to the Administrator). 



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