Disabled applicants must complete form DTE 105E,. Senior Citizen Homestead Exemption.The homestead exemption allows lowincome senior citizens and permanently and totally disabled Ohioans, to reduce their property tax bills. Summary. In April 2023, Cook County prioritized three research questions regarding Illinois' homestead exemptions for further study. Douglas County has additional exemptions. As the name suggests, a tax exemption makes certain income, assets, or a portion of those income and assets free from taxation. Each state has a different property tax rate. Find out which states have the highest and lowest property taxes. These services are for people with low to moderate incomes. Official website of the U.S. Social Security Administration.