Cook County Property Tax Appeal Deadlines & Due Dates 2025

Cook County Property Tax Assessment Calculator | KensingtonBelow is a 2024 listing of deadlines for appealing your property taxes in your township for both the Cook County Assessor and Board of Review.

  • 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.

Learn why appealing by yourself can cost you more money than using Kensington

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Cook County Township
Cook County Assessor
Open for Filing
Cook County Assessor
Closed for Filing
Cook County Board of Review
Open for Filing
Cook County Board of Review
Closed for Filing
Barrington *
June 17
July 31
October 10
November 8
Berwyn
April 04
May 06
August 05
September 03
Bloom
October 16
November 29
January 06
February 04
Bremen
May 23
June 24
August 05
September 03
Calumet
May 21
June 21
August 05
September 03
Cicero
June 05
July 19
August 26
September 24
Elk Grove *
May 30
July 1
August 26
September 24
Evanston *
March 20
April 19
July 22
August 20
Hanover *
October 21
December 04
January 06
February 04
Hyde Park
July 30
September 11
October 17
November 15
Jefferson
September 30
November 13
December 19
January 17
Lake
August 29
October 11
November 21
December 20
Lake View
July 02
August 14
October 10
November 08
Lemont
July 10
August 21
October 10
November 08
Leyden *
August 08
September 20
November 18
December 17
Lyons
July 30
September 11
November 18
December 17
Maine *
May 15
June 17
August 05
September 03
New Trier *
April 16
May 16
August 05
September 03
Niles *
October 9
November 22
January 06
February 04
North Chicago
October 15
November 27
January 06
February 04
Northfield *
August 30
October 15
November 18
December 17
Norwood Park *
July 22
August 20
July 22
August 20
Oak Park
March 26
April 29
August 05
September 03
Orland
August 27
October 09
November 18
December 17
Palatine *
June 25
August 8
October 10
November 08
Palos
April 25
May 28
August 05
September 03
Proviso
August 02
September 16
November 18
December 17
Rich
September 26
November 08
December 09
January 07
River Forest
March 01
April 01
July 22
August 20
Riverside
March 01
April 01
July 22
August 20
Rogers Park
March 18
April 17
July 22
August 20
Schaumburg *
September 23
November 05
December 09
January 07
South Chicago
October 29
December 12
January 06
February 04
Stickney
June 10
July 24
August 26
September 24
Thornton
September 06
October 21
December 09
January 07
West Chicago
May 20
June 20
August 26
September 24
Wheeling *
August 23
October 07
November 18
December 17
Worth
July 25
September 06
October 10
November 8

* North District Townships will be fully reassessed in 2025 as part of the triennial schedule.

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