Exempt agencies can now file their 2023 Annual Exempt Affidavit online

Thursday, March 23, 2023

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This filing is only for agencies such as non-profit organizations such as municipalities, hospitals, and schools. 


Every year, organizations that own properties exempt from assessment must file an Annual Exempt Affidavit. These properties are deemed exempt from taxation per the Illinois Department of Revenue. Examples of such properties are non-profit organizations, hospitals, municipalities, and government agencies. 

The Assessor’s Office now has a NEW online application for submitting the affidavit for all properties exempt through the 2022 assessment year. Affidavits will be accepted as they come in; however, please return them as soon as possible so they may be processed. 

Properties deemed exempt will receive a letter by mail from the Assessor's Office with a specific "Agency Control Number" and password to complete the online filing. To begin the application, click on the button below.

File Online

If you need any assistance or have questions, please contact the Exempt Department via email at assessor.exempt@cookcountyil.gov.