DuPage County Property Tax Appeal Deadlines & Due Dates for 2021
Below is a listing of 2021 deadlines for appealing your DuPage County property taxes with the Supervisor of Assessments.
- Dates in green have been announced (the window to appeal is now open)
- Dates in red have passed (the window to appeal has closed)
- Dates in gray are estimated based on previous years
The earliest you can submit a property tax appeal is the date listed as “Open for Filing” and no property tax appeal will be accepted after the “Closed for Filing” deadline. Click here if you don’t know which DuPage County township you live in.