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
January 19
February 17
Bremen*
August 31
October 2
January 31
March 1
Calumet*
March 30
May 01
September 11
October 10
Cicero*
April 17
May 17
September 18
October 17
Elk Grove
July 6
August 7
January 19
February 17
Evanston
June 6
July 10
January 19
February 17
Hanover
April 17
May 17
September 18
October 17
Hyde Park
September 18
October 19
February 17
March 18
Jefferson
August 31
October 2
March 7
April 5
Lake
November 25
December 27
February 27
March 28
Lake View
August 21
September 21
February 17
March 18
Lemont*
May 09
June 09
November 28
December 27
Leyden
August 18
September 18
February 8
March 9
Lyons*
November 21
December 22
February 27
March 28
Maine
August 07
September 08
February 8
March 9
New Trier
May 24
June 29
December 27
January 25
Niles
September 19
October 20
March 7
April 5
North Chicago
December 2
January 4
March 7
April 5
Northfield
October 3
November 3
February 27
March 28
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
December 12
January 10
Palatine
July 21
August 21
February 8
March 9
Palos*
July 14
August 14
January 19
February 17
Proviso*
November 30
January 3
February 17
March 18
Rich*
September 20
October 23
January 31
March 1
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
December 27
January 25
South Chicago
December 2
January 4
March 7
April 5
Stickney*
August 11
September 12
January 31
March 1
Thornton*
August 04
September 05
January 19
February 17
West Chicago
August 10
September 11
February 8
March 9
Wheeling
August 31
October 2
February 17
March 18
Worth*
November 23
December 24
February 27
March 28
* South District Townships will be fully reassessed in 2023 as part of the triennial schedule
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