If a homeowner believes they are entitled to an exemption that is not reflected on their tax bill, they can apply for what is called a Certificate of Error. The Certificate of Error process provides homeowners an opportunity to redeem missing exemptions for up to three years in addition to the current tax year. Homeowners can now apply for the 2021, 2020, 2019, and 2018 tax years all on one easy to use form available online. 

Please see the full list of property tax exemptions administered by the Assessor’s Office here: cookcountyassessor.com/exemptions. 

This year, many exemptions auto renewed to make the process more convenient for homeowners. In addition to the Homeownerand Senior exemptions, the Assessor’s Office processed auto-renewals for the “Senior Freeze”, Veterans with Disabilities, and Persons with Disabilities exemptions. In total, more than 1.1 million exemptions were auto-renewed, which provided millions of dollars in tax relief to homeowners in Cook County. 

Please download a guide on, How to Apply for Missing Property Tax Exemptions that is available in six languages. 

If Northfield Township residents need additional assistance, please contact Assessor Nally and her staff at: 847-724-8300 or propertytaxhelp@northfieldtownship.com.