AMENDMENT NO. 3 MASTER INVESTMENT ADVISORY AGREEMENT This Amendment dated as of October 30, 2007, amends the Master Investment Advisory Agreement (the "Agreement"), dated June 1, 2000, by and between Short-Term Investments Trust, a Delaware statutory...

                                 AMENDMENT NO. 3
                      MASTER INVESTMENT ADVISORY AGREEMENT

     This Amendment dated as of October 30, 2007, amends the Master Investment
Advisory Agreement (the "Agreement"), dated June 1, 2000, by and between
Short-Term Investments Trust, a Delaware statutory trust, and A I M Advisors,
Inc., a Delaware corporation.

                                   WITNESSETH:

     WHEREAS, the parties desire to amend the Agreement to abolish Cash Assets
Portfolio;

     NOW, THEREFORE, the parties agree as follows;

     1.   Schedule A and Schedule B to the Agreement are hereby deleted in their
          entirety and replaced with the following:

                                   "SCHEDULE A
                            FUNDS AND EFFECTIVE DATES



         NAME OF FUND               EFFECTIVE DATE OF ADVISORY AGREEMENT
         ------------               ------------------------------------
                                 
Government & Agency Portfolio                   June 1, 2000
Government TaxAdvantage Portfolio               June 1, 2000
Liquid Assets Portfolio                       November 24, 2003
STIC Prime Portfolio                          November 24, 2003
Treasury Portfolio                              June 1, 2000




                                   SCHEDULE B
                           COMPENSATION TO THE ADVISOR

     The Trust shall pay the Advisor, out of the assets of a Fund, as full
compensation for all services rendered, an advisory fee for such Fund set forth
below. Such fee shall be calculated by applying the following annual rates to
the average daily net assets of such Fund for the calendar year computed in the
manner used for the determination of the net asset value of shares of such Fund.

                             LIQUID ASSETS PORTFOLIO
                              STIC PRIME PORTFOLIO
                               TREASURY PORTFOLIO



NET ASSETS      ANNUAL RATE
----------      -----------
             
All Assets...      0.15%


                          GOVERNMENT & AGENCY PORTFOLIO



NET ASSETS      ANNUAL RATE
----------      -----------
             
All Assets...      0.10%


                        GOVERNMENT TAXADVANTAGE PORTFOLIO



NET ASSETS                                              ANNUAL RATE
----------                                              -----------
                                                     
First $250 million...................................      0.20%
Over $250 million up to and including $500 million...      0.15%
Over $500 million....................................      0.10%"




     2.   In all other respects, the Agreement is hereby confirmed and remains
          in full force and effect.

     IN WITNESS WHEREOF, the parties have caused this Agreement to be executed
by their respective officers on the date first written above.

                                        SHORT-TERM INVESTMENTS TRUST


Attest: /s/ Xxxxxxx X. Xxxxx            By: /s/ Xxxxx Dun Xxxxxx
        -----------------------------       ------------------------------------
        Assistant Secretary                 Xxxxx Xxxx Xxxxxx
                                            President


(SEAL)


                                        A I M ADVISORS, INC.


Attest: /s/ Xxxxxxx X. Xxxxx            By: /s/ Xxxx X. Xxxx
        -----------------------------       ------------------------------------
        Assistant Secretary                 Xxxx X. Xxxx
                                            Senior Vice President


(SEAL)