35 ILCS 200

Illinois Real Estate Calculators

Cook County's two-step assessment, equalization factor, and the six-exemption stack — general homestead, senior 65+, senior assessment freeze, disabled, returning veteran, and the sliding-scale disabled-veteran exemption.

Anchored to: 35 ILCS 200/15-170 et seq

1 calculator live. Reviewed against current statute and regulation. Last updated 2026-05-15.

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35 ILCS 200 (Illinois Property Tax Code)

Illinois Cook County Property Tax Calculator

Compute an Illinois property's tax bill under the Illinois Property Tax Code (35 ILCS 200). Models Cook County's distinctive two-step assessment — Class 2 residential parcels assessed at 10% of fair market value (35 ILCS 200/9-185) and equalized to the 33-1/3% statewide standard via the Illinois Department of Revenue multiplier (35 ILCS 200/17-5) — plus the full homestead-exemption stack: general homestead, senior 65+, senior assessment freeze (income-tested ≤ $65,000), disabled persons, returning veterans, and the disabled-veterans sliding scale that fully exempts a 70%+ service-connected disability rating.

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Illinois Cook County Property Tax Calculator
Compute an Illinois property's tax bill under the Illinois Property Tax Code (35 ILCS 200). Models Cook County's distinctive two-step assessment — Class 2 residential parcels assessed at 10% of fair market value (35 ILCS 200/9-185) and equalized to the 33-1/3% statewide standard via the Illinois Department of Revenue multiplier (35 ILCS 200/17-5) — plus the full homestead-exemption stack: general homestead, senior 65+, senior assessment freeze (income-tested ≤ $65,000), disabled persons, returning veterans, and the disabled-veterans sliding scale that fully exempts a 70%+ service-connected disability rating.

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Property Tax
Illinois Cook County Property Tax Calculator
Compute an Illinois property's tax bill under the Illinois Property Tax Code (35 ILCS 200). Models Cook County's distinctive two-step assessment — Class 2 residential parcels assessed at 10% of fair market value (35 ILCS 200/9-185) and equalized to the 33-1/3% statewide standard via the Illinois Department of Revenue multiplier (35 ILCS 200/17-5) — plus the full homestead-exemption stack: general homestead, senior 65+, senior assessment freeze (income-tested ≤ $65,000), disabled persons, returning veterans, and the disabled-veterans sliding scale that fully exempts a 70%+ service-connected disability rating.

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Every YMYL calculator is reviewed quarterly and after every legislative session in the jurisdiction it covers. Citations are link-validated monthly against the relevant statute and regulation websites. The methodology page documents the discipline.

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