Cook County Property Tax Appeal Deadlines

Your Trusted Source for Appeal Deadlines in Cook County

Timely filing is essential when appealing your property taxes. This page is your go-to resource for up-to-date filing deadlines with the Cook County Assessor, the Cook County Board of Review, and the Illinois Property Tax Appeal Board (PTAB). Each agency operates on its own schedule, and missing a deadline can delay your appeal by an entire year. That’s why we keep this page updated regularly with the most current township openings and final submission dates. Whether you’re a homeowner or commercial property owner, use this page to stay informed, stay compliant, and stay ahead. Check back often or contact us if you have questions about your specific deadline.