Property Tax Insights
Cook County Property Tax Appeal Blog & Resources
Explore expert guides, real appeal results, and township-specific deadlines to help you reduce your Cook County property taxes. Our blog covers everything from identifying over assessments to understanding the appeal process and maximizing your savings.
Browse articles by category including Cook County property tax appeal deadlines, assessment errors, over assessment signs, and real case results.
Latest
Cook County property tax guides and results
SEP 30, 2026
Cook County Tax Sale: What Happens When Property Taxes Go Unpaid
How the Cook County annual tax sale works, what a tax buyer gets, how to redeem sold taxes through the County Clerk, and how to keep a bill out of the sale.
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SEP 30, 2026
How to Choose a Property Tax Appeal Company in Cook County
Seven questions to ask a Cook County property tax appeal company or attorney before you sign: the fee, the venues, the evidence, and who does the work.
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SEP 30, 2026
98.8% of Orland Township Homes Got a Higher Assessment in 2026
37,115 of 37,567 Orland Township homes got a higher 2026 assessment. Condos and large homes rose most, townhomes least. By town, type, and the Nov 6 deadline.
CCTA TeamRead More
SEP 29, 2026
Township Assessor or Cook County Assessor? Who Decides Your 2026 Property Tax Appeal
Your township assessor doesn't set your assessment or decide your appeal; the Cook County Assessor does. Who does what, and each township's 2026 window.
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SEP 29, 2026
Orland Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closes November 6, 2026
Orland's Assessor (CCAO) appeal window closes November 6, 2026. Orland outcome data, the tax math on the median home, and how to file on time.
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SEP 29, 2026
Orland Township 2026 Reassessment: Assessments Up 20% — Appeal Window Closes November 6
Orland Township's 2026 reassessment raised the median home assessment 19.9%; 99% of homes went up. Appeal to the Assessor by November 6, 2026.
CCTA TeamRead More
SEP 29, 2026
Palatine Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closes November 4, 2026
Palatine's Assessor (CCAO) appeal window closes November 4, 2026. Palatine outcome data, the tax math on the median home, and how to file on time.
CCTA TeamRead More
SEP 29, 2026
Proviso Township 2026 Reassessment: Assessments Up 19% — Appeal Window Closes October 27
Proviso Township's 2026 reassessment raised the median home assessment 19.0%; 89% of homes went up. Appeal to the Assessor by October 27, 2026.
CCTA TeamRead More
SEP 18, 2026
Illinois Property Tax Appeal Board (PTAB): Appealing After the Cook County Board of Review
What PTAB is, the 30-day deadline after a Cook County Board of Review decision, what it costs, how long it takes, and when the Circuit Court fits instead.
CCTA TeamRead More
SEP 18, 2026
Wheeling Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closes October 22, 2026
Wheeling's Assessor (CCAO) appeal window closes October 22, 2026. Wheeling outcome data, the tax math on the median home, and how to file on time.
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SEP 18, 2026
Lake Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closes October 29, 2026
Lake's Assessor (CCAO) appeal window closes October 29, 2026. Lake outcome data, the tax math on the median home, and how to file on time.
CCTA TeamRead More
SEP 18, 2026
Proviso Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closes October 27, 2026
Proviso's Assessor (CCAO) appeal window closes October 27, 2026. Proviso outcome data, the tax math on the median home, and how to file on time.
CCTA TeamRead More
SEP 06, 2026
Worth Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closes October 15, 2026
Worth's Assessor (CCAO) appeal window closes October 15, 2026. Worth outcome data, the tax math on the median home, and how to file on time.
CCTA TeamRead More
SEP 06, 2026
Cook County Property Tax Rates 2025 by Township: From 6.4% in New Trier to 19.0% in Thornton
2025 composite property tax rates for all 38 Cook County townships, from the bills due October 1, 2026: Chicago about 6.9%, New Trier 6.4%, Worth 11.3%, Thornton 19.0%. How the rate is applied and why it differs street to street.
CCTA TeamRead More
SEP 06, 2026
Cook County Second Installment 2025 Property Tax Bills: Due October 1, 2026
Second-installment 2025 Cook County property tax bills were posted August 18, mailed by September 1 and are due October 1, 2026. What the bill contains, how to check exemptions, what late payment costs, and why an appeal now changes next year's bill.
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SEP 06, 2026
Cook County Senior Freeze Exemption: Who Qualifies in 2026, the $65,000 Income Limit, and Why You Must Reapply Every Year
The Senior Freeze holds a qualifying senior's equalized assessed value at a base year. Age 65+, household income of $65,000 or less, principal residence, and a new application every year. What it does, what it does not, and how it works with an appeal in a reassessment year.
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SEP 06, 2026
Cook County Certificate of Error: How to Get a Refund for a Missing Exemption or a Wrong Assessment
A Certificate of Error corrects a Cook County tax bill that has already been issued: a missing Homeowner, Senior or Senior Freeze exemption, or a factual error in the assessment. Who issues it, how far back it reaches, how the Treasurer refunds it, and how it differs from an appeal.
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SEP 06, 2026
Worth Township 2026 Reassessment: Assessments Up 22% — Appeal Window Closes October 15
Worth Township's 2026 reassessment raised the median home assessment 22.2%, with 97% of homes up. The Assessor's appeal window runs September 1 to October 15, 2026. What the numbers mean and how to file.
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SEP 06, 2026
Lyons Township 2026 Reassessment: Assessments Up 25%, Assessor Window Closed, Board of Review Next
Lyons Township's 2026 reassessment raised the median home assessment 25.1%. The Assessor's window closed September 3 with 11,844 appeals filed; the Board of Review window is the next chance. Numbers, last year's outcomes, and what to do now.
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SEP 06, 2026
Cicero Property Tax Appeal Deadline 2026 — Board of Review Window Closed September 29, 2026
Cicero's Board of Review appeal window closed September 29, 2026. What an owner can still do.
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