Exhibit 31.1

Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer

CERTIFICATION

I, Walter H. Hasselbring, III certify that:

1. I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K/A of IF Bancorp, Inc.; and

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

Date: October 28, 2025						/s/ Walter H. Hasselbring, III
						Walter H. Hasselbring, III
						Chairman and Chief Executive Officer
						(principal executive officer)