DuPage County Property Tax Appeal Deadlines & Due Dates for 2022

DuPage County Property Tax Appeal Deadlines for 2018Below is a listing of 2022 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.

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DuPage County Township
DuPage County Assessor Open for Filing (Notice Date)
DuPage County Board of Review Closed for Filing (Final Complaint Filing)
Addison
October 01
November 01
Bloomingdale
July 23
August 23 
Downers Grove
September 01 
October 04
Lisle
October 06 
November 08 
Milton
October 01 
November 01
Naperville
November 26
December 27
Wayne
November 03
December 03
Winfield
October 08 
November 08
York
October 13
November 15 

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