Cook County Assessor's Office


Exempt Properties Annual Affidavit



This filing is for use by the Agencies to file your 2024 Annual Affidavit for properties owned for the 2023 assessment year.


Note: You are required by law to update changes to property owned by your agency. This Electronic Annual Affidavit System will allow you to update information for your properties by PIN(s), Request Deletion of Leaseholds and upload documents.


Press "Begin Filing" to start filing and follow the instructions on the following page.



Begin Filing