Eligible residents may fill out and submit this application. Deadline for filing Homestead exemption (including Disability Exemption or Age Exemption) is April 1st.The homestead exemption form is available HERE. The filing deadline is April 1st. Residents of Georgia may use the following helpful links to apply for a homestead exemption on their primary residence. The deadline for filing for Homestead Exemption is April 1. You can complete your homestead exemption application online: Online Homestead Application. April 1 is the deadline to apply for the current year. Applications can be filed year round, but must be submitted on or before April 1st in order to apply for the current tax year. DeKalb County: Homestead exemption applications are accepted in person yearround but can be filled out online between January 1 and April 1.