Fill out the Homestead Tax Credit, 54-028 form. Return the form to your city or county assessor.Eligible claimants who are 65 years of age or older on or before January 1 of the assessment year are now eligible for a homestead tax exemption. Address: City: State: ZIP: Phone: Answer these questions to determine eligibility: 1. Are you currently an Iowa resident? Pre-populated Homestead Tax Credit Application Forms are available to be printed from within your parcel on our website. New applications for homestead tax credit and exemption are to be filed with the Assessor on or before July 1 of the year the credit is first claimed. Complete the application. Print the New 65 plus Homestead Exemption Form. Homestead Tax Credit Form.