Exhibit 32.2

CFO CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350*

In connection with the Quarterly Report of Guaranty Federal Bancshares, Inc. (the “Company”) on Form 10-Q for the quarter ended June 30, 2011 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Carter Peters, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

1.           The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.           The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  Carter Peters

Carter Peters

Chief Financial Officer

(Principal Financial Officer)

August 12, 2011

*  A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.