Property tax exemptions can lower a homeowner's property tax bill. Here is a summary of what the Cook County Assessor's Office lists on its exemptions page, as of Oct 14, 2026. This is general information, not tax advice.
Homeowner Exemption
Most homeowners are eligible if they own and occupy the property as their principal place of residence. The Assessor's Office says it saves a Cook County property owner an average of approximately $950 each year, and it renews automatically.
Senior Exemption
For most homeowners 65 or older who own and occupy the property as their principal residence. It renews automatically.
Low-Income Senior Assessment Freeze ("Senior Freeze")
For homeowners who meet the Senior Exemption requirements and had total household income of $65,000 or less in calendar year 2024. It must be filed every year.
Other exemptions listed
- Persons with Disabilities Exemption
- Returning Veterans Exemption
- Veterans with Disabilities Exemption
- WWII Exemption
- Long-Time Homeowner Exemption
- Home Improvement Exemption (up to $75,000 of added value for up to four years, applied automatically)
Missing an exemption?
According to the Assessor's Office, homeowners can review the Exemption History and Status section of their Property Details, and missing exemptions for tax years 2021 through 2025 may be redeemed through the Certificate of Error process.
An exemption reduces the equalized assessed value (EAV), not the tax bill dollar for dollar. Rules and deadlines change; please confirm details with the Cook County Assessor's Office or call (312) 443-7550. Outside Cook County, contact your county assessor.
Source: cookcountyassessoril.gov/exemptions, as of Oct 14, 2026.