Illinois (IL) · Property Tax Appeal
How to Appeal Your Property Tax Assessment in Illinois
File an appeal with the County Board of Review (or the Cook County Assessor for Cook County) within 30 days of the assessment notice.
Filing Deadline
30 days from assessment notice
Appeals Body
Board of Review
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Answer 3 questions, pick comparable properties, download your county-ready letter. Only pay when you're happy with the result.
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Property Tax Appeal by County in Illinois
How to Appeal Your Property Taxes in Illinois
1. Gather evidence
Your current assessed value vs. recent sales of comparable properties in your neighborhood.
2. File your protest
Submit to the Board of Review by 30 days from assessment notice. Late filings are typically rejected.
3. Attend your hearing
Present your comps and letter. Most hearings are brief. Many are resolved before the hearing date.
Deadlines and procedures change. Always verify with your county assessor or Board of Review before filing. This is not legal advice.