Your Cook County bill went up? See what you really owe.
Enter the two numbers from your reassessment notice — get your estimate in about 30 seconds.
Estimate your new tax bill
Estimated new property tax bill
$0/year
about $0/month ·
If you have a Senior Freeze (Low-Income Senior Citizens Assessment Freeze), this estimate does not apply — the freeze caps your taxable value at a base year, so your actual bill can be far lower. This tool models only the flat senior exemption.
Before acting on this estimate, verify your assessed value and exemptions with the Cook County Assessor or Treasurer — see our Terms of Service.
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How is this calculated?
In a TIF district, or have a Senior Freeze? This estimate can be significantly off — verify with the Cook County Treasurer before making any decision.
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See how much I could save →- ✓ Based on official Cook County data
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How Cook County property taxes work
Cook County reassesses each property every three years. Your bill is your assessed value × the Illinois equalization factor, minus exemptions (like the homeowner or senior exemption), × your local composite tax rate. When a reassessment raises your assessed value, your bill usually rises too. If comparable homes near you are assessed for less, you may be over-assessed — and can appeal, first with the Assessor, then the Board of Review.
Think your assessment is too high? A licensed service can check for free.
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See how much I could saveOwnwell is a licensed appeal service. There's no upfront cost to check — they only charge if they win you a reduction.