Amendment to the Amended and Restated Financial Accounting Services Agreement

Exhibit (h)(53)

Amendment to the

Amended and Restated Financial Accounting Services Agreement

This is an amendment (the “Amendment”) to the Amended and Restated Financial Accounting Services Agreement, dated December 13, 2004 (the “Agreement”) entered into among Calamos Advisors LLC and the parties listed in Schedule I thereto.

In consideration of the mutual agreements and covenants contained herein, the parties agree to the following amendments to the Agreement:

(1) Schedule I of the Agreement is hereby deleted and replaced with the attached Schedule I; and

(2) All other terms of the Agreement shall remain in full force and effect. If the terms of the Agreement and this Amendment conflict, then the terms of the Amendment shall control.

This Amendment shall be effective as of June 21, 2013.

CALAMOS ADVISORS LLC						CALAMOS INVESTMENT TRUST, on
						behalf of itself and each series thereunder
By:		/s/ Xxxxxx X. Xxxxx				By:		/s/ J. Xxxxxxxxxxx Xxxxxxx
Name:		Xxxxxx X. Xxxxx				Name:		J. Xxxxxxxxxxx Xxxxxxx
Title:		Senior Vice President, Chief Financial Officer, and Head of Fund Administration				Title:		Secretary
CALAMOS ADVISORS TRUST						CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND
By:		/s/ J. Xxxxxxxxxxx Xxxxxxx				By:		/s/ J. Xxxxxxxxxxx Xxxxxxx
Name:		J. Xxxxxxxxxxx Xxxxxxx				Name:		J. Xxxxxxxxxxx Xxxxxxx
Title:		Secretary				Title:		Secretary
CALAMOS CONVERTIBLE AND HIGH INCOME FUND						CALAMOS STRATEGIC TOTAL RETURN FUND
By:		/s/ J. Xxxxxxxxxxx Xxxxxxx				By:		/s/ J. Xxxxxxxxxxx Xxxxxxx
Name:		J. Xxxxxxxxxxx Xxxxxxx				Name:		J. Xxxxxxxxxxx Xxxxxxx
Title:		Secretary				Title:		Secretary
CALAMOS GLOBAL TOTAL RETURN FUND						CALAMOS GLOBAL DYNAMIC INCOME FUND
By:		/s/ J. Xxxxxxxxxxx Xxxxxxx				By:		/s/ J. Xxxxxxxxxxx Xxxxxxx
Name:		J. Xxxxxxxxxxx Xxxxxxx				Name:		J. Xxxxxxxxxxx Xxxxxxx
Title:		Secretary				Title:		Secretary

SCHEDULE I

Calamos Investment Trust, a Massachusetts business trust

Calamos Convertible Fund

Calamos Growth and Income Fund

Calamos Market Neutral Income Fund

Calamos Growth Fund

Calamos Global Growth and Income Fund

Calamos High Income Fund

Calamos Value Fund

Calamos Focus Growth Fund

Calamos International Growth Fund

Calamos Global Equity Fund

Calamos Total Return Bond Fund

Calamos Evolving World Growth Fund

Calamos Discovery Growth Fund

Calamos Long/Short Fund

Calamos Dividend Growth Fund

Calamos Mid Cap Growth Fund

Calamos Advisors Trust, a Massachusetts business trust

Calamos Growth and Income Portfolio

Calamos Convertible Opportunities and Income Fund, a Delaware statutory trust

Calamos Convertible and High Income Fund, a Delaware statutory trust

Calamos Strategic Total Return Fund, a Delaware statutory trust

Calamos Global Total Return Fund, a Delaware statutory trust

Calamos Global Dynamic Income Fund, a Delaware statutory trust