Cook County Property Tax Appeal Deadlines & Due Dates 2021
Below is a 2021 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
Get Your Free Property Tax Reduction Estimate
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
July 14
August 16
December 22
January 20
Berwyn
June 1
July 1
January 3
February 1
Bloom
July 23
August 23
February 28
March 29
Bremen
September 15
October 18
February 28
March 29
Calumet
July 2
August 3
December 22
January 20
Cicero
June 8
July 9
December 22
January 20
Elk Grove
June 28
July 29
February 14
March 15
Evanston
May 7
June 7
February 14
March 15
Hanover
July 14
August 16
January 3
February 1
Hyde Park*
December 15
January 21
April 11
May 10
Jefferson*
August 16
September 17
May 2
May 31
Lake*
November 4
December 6
April 26
May 25
Lake View*
November 22
December 23
April 11
May 10
Lemont
August 14
September 14
February 14
March 15
Leyden
August 30
September 30
April 4
May 3
Lyons
September 21
October 25
April 26
May 25
Maine
July 23
August 23
March 28
April 26
New Trier
June 1
July 1
January 3
February 1
Niles
November 1
December 3
May 2
May 31
North Chicago*
September 17
October 19
April 26
May 25
Northfield
September 3
October 4
April 11
May 10
Norwood Park
May 17
June 16
December 06
January 04
Oak Park
May 17
June 16
December 06
January 04
Orland
July 2
August 3
February 14
March 15
Palatine
June 14
July 16
February 14
March 15
Palos
August 12
September 13
March 28
April 26
Proviso
October 8
November 8
May 2
May 31
Rich
October 26
November 29
May 2
May 31
River Forest
April 21
May 21
December 06
January 04
Riverside
April 22
May 22
December 06
January 04
Rogers Park*
June 15
July 19
February 14
March 15
Schaumburg
June 16
July 19
January 3
February 1
South Chicago*
September 30
November 1
April 26
May 25
Stickney
October 14
November 29
May 2
May 31
Thornton
August 9
September 9
February 28
March 29
West Chicago*
July 21
August 23
April 4
May 3
Wheeling
October 5
November 5
April 11
May 10
Worth
August 24
September 24
April 26
May 25
* City of Chicago Townships will be fully reassessed in 2021 as part of the triennial schedule
Get Your Free Property Tax Reduction Estimate
2020 Cook County Property Tax Appeal Deadlines & Due Dates
Over 90% Success Rate on Property Tax Appeals & Protests
No Up-Front Fees