Cook County Property Tax Appeal Deadlines & Due Dates 2023
Below is a 2023 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
Open for Filing
Cook County Assessor
Closed for Filing
Closed for Filing
Cook County Board of Review
Open for Filing
Open for Filing
Cook County Board of Review
Closed for Filing
Closed for Filing
Barrington
April 05
May 05
September 11
October 10
Berwyn*
April 24
May 24
September 18
October 17
Bloom*
June 23
July 26
November 13
December 12
Bremen*
August 31
October 2
December 4
January 2
Calumet*
March 30
May 01
September 11
October 10
Cicero*
April 17
May 17
September 18
October 17
Elk Grove
July 6
August 7
November 13
December 12
Evanston
June 6
July 10
October 5
November 3
Hanover
April 17
May 17
September 18
October 17
Hyde Park
September 18
October 19
December 21
January 19
Jefferson
August 31
October 2
December 18
January 16
Lake
November 01
December 05
January 08
February 06
Lake View
August 21
September 21
December 4
January 2
Lemont*
May 09
June 09
October 5
November 3
Leyden
August 18
September 18
December 4
January 2
Lyons*
October 24
November 27
January 08
February 06
Maine
August 07
September 08
November 13
December 12
New Trier
May 24
June 29
October 5
November 3
Niles
September 19
October 20
December 28
January 26
North Chicago
October 4
November 6
December 28
January 26
Northfield
October 25
November 28
January 06
February 08
Norwood Park
March 29
April 29
September 11
October 10
Oak Park*
April 13
May 15
September 11
October 10
Orland*
May 24
June 29
October 5
November 3
Palatine
July 21
August 21
November 13
December 12
Palos*
July 14
August 14
November 13
December 12
Proviso*
September 29
October 30
December 28
January 26
Rich*
September 20
October 23
December 18
January 16
River Forest*
April 27
May 30
September 18
October 17
Riverside*
March 30
May 01
September 11
October 10
Rogers Park
April 25
May 25
September 18
October 17
Schaumburg
May 10
June 12
October 5
November 3
South Chicago
October 6
November 7
December 28
January 26
Stickney*
August 11
September 12
December 4
January 2
Thornton*
August 04
September 05
November 13
December 12
West Chicago
August 10
September 11
December 4
January 2
Wheeling
August 31
October 2
December 18
January 16
Worth*
November 07
December 11
January 08
February 06
* South District Townships will be fully reassessed in 2023 as part of the triennial schedule
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