Exhibit 99.h(3)

MEMORANDUM OF AGREEMENT

(Expense Limitations)

This Memorandum of Agreement is entered into as of the Effective Date on the attached exhibits (the “Exhibits”), between AIM Counselor Series Trust (Invesco Counselor Series Trust), AIM Equity Funds (Invesco Equity Funds), AIM Funds Group (Invesco Funds Group), AIM Growth Series (Invesco Growth Series), AIM International Mutual Funds (Invesco International Mutual Funds), AIM Investment Funds (Invesco Investment Funds), AIM Investment Securities Funds (Invesco Investment Securities Funds), AIM Sector Funds (Invesco Sector Funds), AIM Tax-Exempt Funds (Invesco Tax-Exempt Funds), AIM Variable Insurance Funds (Invesco Variable Insurance Funds), Invesco Management Trust and Short-Term Investments Trust (each a “Trust” or, collectively, the “Trusts”), on behalf of the funds listed on the Exhibits to this Memorandum of Agreement (the “Funds”), and Invesco Advisers, Inc. (“Invesco”). Invesco shall and hereby agrees to waive fees or reimburse expenses of each Fund, on behalf of its respective classes as applicable, severally and not jointly, as indicated in the attached Exhibits.

For and in consideration of the mutual terms and agreements set forth herein and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the Trusts and Invesco agree as follows:

For the expense limitations identified on Exhibit A (“Expense Limitations”) and the boundary expense limitations on Exhibit B (“Boundary Limits”), Invesco agrees until at least the expiration date set forth on Exhibit A (each, an “Expiration Date”) for the Expense Limitations, and for an indefinite period until further notice to the Board of Trustees for the Boundary Limits, that Invesco will waive its fees or reimburse expenses to the extent that expenses of a class of a Fund (excluding (i) interest; (ii) taxes; (iii) dividend expense on short sales; (iv) extraordinary or non-routine items, including litigation expenses; and (v) expenses that each Fund has incurred but did not actually pay because of an expense offset arrangement, if applicable) exceed the Expense Limitation or Boundary Limit rate, on an average of the daily net assets allocable to such class on an annualized basis¹.

Expense Limitations: Neither a Trust nor Invesco may remove or amend the Expense Limitations to a Fund’s detriment prior to the Expiration Date without requesting and receiving the approval of the Board of Trustees of the applicable Fund’s Trust to remove or amend such Expense Limitations. Invesco will not have any right to reimbursement of any amount so waived or reimbursed. For the Expense Limitations, Invesco agrees to review the then-current expense limitations for each class of each Fund listed on the Exhibits on a date prior to the Expiration Date to determine whether such limitations should be amended, continued or terminated. The expense limitations will expire upon the Expiration Date unless Invesco has agreed to continue them. The Exhibits will be amended to reflect any such agreement.

Boundary Limits: From time to time, Invesco may establish amend and/or terminate Boundary Limits at any time in its sole discretion. Invesco will inform the Board of Trustees of any such changes. These Boundary Limits are set forth on Exhibit B. Any delay or failure by Invesco to update this Memorandum of Agreement with regards to the terminations, extensions, or expirations of the Boundary Limits shall have no effect on such Boundary Limits; the Boundary Limits are listed herein for informational purposes only.

It is expressly agreed that the obligations of each Trust hereunder shall not be binding upon any of the trustees, shareholders, nominees, officers, agents or employees of the Trusts personally, but shall only bind the assets and property of each Fund, as provided in each Trust’s Agreement and Declaration of Trust. The execution and delivery of this Memorandum of Agreement have been authorized by the trustees of the Trusts, and this Memorandum of Agreement has been executed and delivered by an authorized officer of the Trusts acting as such; neither such authorization by such trustees nor such execution and delivery by such officer shall be deemed to have been made by any of them individually or to impose any liability on any of them personally, but shall bind only the assets and property of the Funds, as provided in each Trust’s Agreement and Declaration of Trust.

¹ Acquired fund fees and expenses are not fees or expenses incurred by a Fund directly but are expenses of the investment companies in which a Fund invests. These fees and expenses are incurred indirectly through the valuation of a Fund’s investment in these investment companies. Acquired fund fees and expenses are required to be disclosed and included in the total annual Fund operating expenses in the prospectus fee table. As a result, the net total annual Fund operating expenses shown in the prospectus fee table may exceed the expense limits reflected in Exhibit A.

IN WITNESS WHEREOF, each of the Trusts, on behalf of itself and its Funds listed on the Exhibits to this Memorandum of Agreement, and Invesco have entered into this Memorandum of Agreement as of the Effective Dates on the attached Exhibits.

AIM COUNSELOR SERIES TRUST (INVESCO COUNSELOR SERIES TRUST)

AIM EQUITY FUNDS (INVESCO EQUITY FUNDS)

AIM FUNDS GROUP (INVESCO FUNDS GROUP)

AIM GROWTH SERIES (INVESCO GROWTH SERIES)

AIM INTERNATIONAL MUTUAL FUNDS (INVESCO INTERNATIONAL MUTUAL FUNDS)

AIM INVESTMENT FUNDS (INVESCO INVESTMENT FUNDS)

AIM INVESTMENT SECURITIES FUNDS (INVESCO INVESTMENT SECURITIES FUNDS)

AIM SECTOR FUNDS (INVESCO SECTOR FUNDS)

AIM TAX-EXEMPT FUNDS (INVESCO TAX-EXEMPT FUNDS)

AIM VARIABLE INSURANCE FUNDS (INVESCO VARIABLE INSURANCE FUNDS)

INVESCO MANAGEMENT TRUST

SHORT-TERM INVESTMENTS TRUST

on behalf of the Funds listed on the Exhibits to this Memorandum of Agreement

EXHIBIT A¹

Expense Limitations

AIM Counselor Series Trust (Invesco Counselor Series Trust)

AIM Funds Group (Invesco Funds Group)

AIM Growth Series (Invesco Growth Series)

AIM International Mutual Funds (Invesco International Mutual Funds)

AIM Investment Funds (Invesco Investment Funds)

AIM Investment Securities Funds (Invesco Investment Securities Funds)

AIM Tax-Exempt Funds (Invesco Tax-Exempt Funds)  

Invesco Management Trust  

Short-Term Investments Trust

AIM Variable Insurance Funds (Invesco Variable Insurance Funds)

*Acquired Fund Fees and Expenses (“AFFE”) will be calculated as of the Fund’s fiscal year end according to Instruction 3(f) of Item 3 of Form N-1A. “Net AFFE” will be calculated by subtracting any waivers by Invesco associated with investments in affiliated funds, such as investments in affiliated money market funds, from the AFFE calculated in accordance with the preceding sentence. For clarity, the NET AFFE calculated as of the Fund’s fiscal year end will be used throughout the waiver period in establishing the Fund’s waiver amount, regardless of whether actual AFFE is more or less during the waiver period.

EXHIBIT B

Boundary Limits