Exhibit 99.a(1)(b)

AMENDMENT NO. 1

TO FIFTH AMENDED AND RESTATED

AGREEMENT AND DECLARATION OF TRUST OF

AIM VARIABLE INSURANCE FUND (INVESCO VARIABLE INSURANCE FUNDS)

This Amendment No. 1 (the “Amendment”) to the Fifth Amended and Restated Agreement and Declaration of Trust of AIM Variable Insurance Funds (Invesco Variable Insurance Funds) (the “Trust”) amends, the Fifth Amended and Restated Agreement and Declaration of Trust of the Trust dated as of September 20, 2022, 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, effective April 29, 2024, the Trust desires to amend the Agreement to remove Invesco V.I. Conservative Balanced Fund, from Schedule A;

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 4/28/2025. 

By:	/s/ Melanie Ringold
Names: Melanie Ringold
Title: Senior Vice President, Secretary and Chief Legal Officer

1

“EXHIBIT 1

SCHEDULE A 

AIM COUNSELOR SERIES TRUST (INVESCO COUNSELOR SERIES TRUST) 

PORTFOLIOS AND CLASSES THEREOF

PORTFOLIO	CLASSES OF EACH PORTFOLIO
Invesco Oppenheimer V.I. International Growth Fund	Series I Shares
	Series II Shares
Invesco V.I. American Franchise Fund	Series I Shares
	Series II Shares
Invesco V.I. American Value Fund	Series I Shares
	Series II Shares
Invesco V.I. Balanced-Risk Allocation Fund	Series I Shares
	Series II Shares
Invesco V.I. Capital Appreciation Fund	Series I Shares
	Series II Shares
Invesco V.I. Comstock Fund	Series I Shares
	Series II Shares
Invesco V.I. Core Equity Fund	Series I Shares
	Series II Shares
Invesco V.I. Core Plus Bond Fund	Series I Shares
	Series II Shares
Invesco V.I. Discovery Mid Cap Growth Fund	Series I Shares
	Series II Shares
Invesco V.I. Diversified Dividend Fund	Series I Shares
	Series II Shares
Invesco V.I. Equity and Income Fund	Series I Shares
	Series II Shares
Invesco V.I. Equally-Weighted S&P 500 Fund	Series I Shares
	Series II Shares
Invesco V.I. Global Fund	Series I Shares
	Series II Shares
Invesco V.I. Global Core Equity Fund	Series I Shares
	Series II Shares
Invesco V.I. Global Real Estate Fund	Series I Shares
	Series II Shares
Invesco V.I. Government Money Market Fund	Series I Shares
	Series II Shares

2

PORTFOLIO	CLASSES OF EACH PORTFOLIO
Invesco V.I. Government Securities Fund	Series I Shares
	Series II Shares
Invesco V.I. Growth and Income Fund	Series I Shares
	Series II Shares
Invesco V.I. Global Strategic Income Fund	Series I Shares
	Series II Shares
Invesco V.I. Health Care Fund	Series I Shares
	Series II Shares
Invesco V.I. High Yield Fund	Series I Shares
	Series II Shares
Invesco V.I. EQV International Equity Fund	Series I Shares
	Series II Shares
Invesco V.I. Main Street Fund®	Series I Shares
	Series II Shares
Invesco V.I. Main Street Mid Cap Fund	Series I Shares
	Series II Shares
Invesco V.I. Main Street Small Cap Fund®	Series I Shares
	Series II Shares
Invesco V.I. NASDAQ 100 Buffer Fund – March	Series I Shares
	Series II Shares
Invesco V.I. NASDAQ 100 Buffer Fund – June	Series I Shares
	Series II Shares
Invesco V.I. NASDAQ 100 Buffer Fund – September	Series I Shares
	Series II Shares
Invesco V.I. NASDAQ 100 Buffer Fund – December	Series I Shares
	Series II Shares
Invesco V.I. S&P 500 Buffer Fund - March	Series I Shares
	Series II Shares
Invesco V.I. S&P 500 Buffer Fund – June	Series I Shares
	Series II Shares
Invesco V.I. S&P 500 Buffer Fund - September	Series I Shares
	Series II Shares
Invesco V.I. S&P 500 Buffer Fund - December	Series I Shares
	Series II Shares
Invesco V.I. Small Cap Equity Fund	Series I Shares
	Series II Shares
Invesco V.I. Technology Fund	Series I Shares
	Series II Shares
Invesco V.I. U.S. Government Money Portfolio	Series I Shares
	Series II Shares

3