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. Once in your parcel, click on the Homestead Tax Credit (54028) Submission link and fill out all the information listed. Address: City: State: ZIP: Phone: Answer these questions to determine eligibility: 1. Are you currently an Iowa resident? Iowa law provides for a number of credits and exemptions. Give the form to your local assessor to claim the exemption. New applications for homestead tax credit are to be filed with the Assessor on or before July 1 of the year the credit is first claimed. Pre-populated Homestead Tax Credit Application Forms are available to be printed from within your parcel on our website.