AMENDMENT NO. 3
                             TO AMENDED AND RESTATED
                      AGREEMENT AND DECLARATION OF TRUST OF
                                 AIM SUMMIT FUND


         This Amendment No. 3 to the Amended and Restated Agreement and
Declaration of Trust of AIM Summit Fund (this "Amendment") amends, effective
June 30, 2005, the Amended and Restated Agreement and Declaration of Trust of
AIM Summit Fund (the "Trust"), dated as of May 15, 2002, as amended (the
"Agreement").

         Under Section 9.7 of the Agreement, this Amendment may be executed by a
duly authorized officer of the Trust.

         WHEREAS, the Trust desires to create Class A Shares, Class B Shares and
Class C Shares and re-designate its existing shares as Class P Shares;

         NOW, THEREFORE, the Agreement is hereby amended as follows:

         1. Schedule A of the Agreement is hereby amended and restated to read
in its entirety as set forth on Exhibit 1 to this Amendment.

         2. All references in the Agreement to "this Agreement" shall mean the
Agreement as amended by this Amendment.

         3. Except as specifically amended by this Amendment, the Agreement is
hereby confirmed and remains in full force and effect.

         IN WITNESS WHEREOF, the undersigned, a duly authorized officer of the
Trust, has executed this Amendment as of June 30, 2005.



                           By:          /s/ Robert H. Graham
                                ------------------------------------------------

                           Name:        Robert H. Graham
                                ------------------------------------------------

                           Title:       President
                                 -----------------------------------------------




                          EXHIBIT 1 TO AMENDMENT NO. 3
                                       TO
                              AMENDED AND RESTATED
                       AGREEMENT AND DECLARATION OF TRUST
                               OF AIM SUMMIT FUND


                                   "SCHEDULE A

                                 AIM SUMMIT FUND
                         PORTFOLIOS AND CLASSES THEREOF





PORTFOLIO                                     CLASSES OF EACH PORTFOLIO
---------                                     -------------------------
                                          

AIM Summit Fund                               Class A Shares
                                              Class B Shares
                                              Class C Shares
                                              Class P Shares"