A property tax exemption is like a discount applied to your EAV. If you qualify for an exemption, it allows you to lower your EAV.All applications must be submitted online through the Smartfile E-Filing Portal. There is no annual renewal for this exemption. To qualify for the Illinois homestead exemption, you must live in the state for at least 730 days. Very few homeowners qualify for this exemption because of strict eligibility requirements outlined in the Illinois Property Tax Code. You do not need to fill out an application. Your Township Assessor will certify the improvement for exemption to our office. General Homestead Exemption is better known as the Owner Occupied Exemption. You must live in the home to qualify for the tax break.