🏠 Illinois Property Tax 2026 • Estimator

Illinois Property Tax Calculator

Written by the USAFinCalc Team

See what Illinois property tax actually costs in 2026. Plug in your home's assessed value and county for a full annual estimate covering the average tax rate (1.0%–2.5%+), Homeowner Exemption ($6,000), and Senior Freeze.Updated 2026

Enter your property value below to calculate your Illinois property tax.

🏡 Property Details

Assessed Property Value (market value)

County

Property Type

Homeowner Exemption (primary residence)

Additional Exemptions (senior, veteran, etc.)

📍 Illinois — 1.0%–2.5%+ Effective Rate

📊 Homeowner Exemption: $6,000 · Senior Freeze: 65+ with income < $65,000 · Veterans exemption · 1/3 assessment ratio in some counties

🏠

Enter your property details

See your annual property tax

Illinois Property Tax Estimator — Quick Look

Estimated annual property tax for common home values (primary residence, with $6,000 homeowner exemption).

Assessed Value	County	Tax Rate	Annual Tax	Monthly
$200,000	Cook (1.8%)	1.80%	$3,492	$291
$300,000	Cook (1.8%)	1.80%	$5,292	$441
$300,000	DuPage (2.0%)	2.00%	$5,880	$490
$400,000	Cook (1.8%)	1.80%	$7,092	$591
$400,000	Lake (2.2%)	2.20%	$8,668	$722
$500,000	Cook (1.8%)	1.80%	$8,892	$741
$500,000	Will (2.0%)	2.00%	$9,880	$823

* Estimates for primary residence with $6,000 homeowner exemption. Actual tax varies by municipality and school district.

Illinois Property Tax Information 2026

Average Effective Rate: 2.08% (2nd highest in the United States) #2 in the Nation

Homeowner Exemption: $6,000 reduction in Equalized Assessed Value (EAV) for owner-occupied primary residences. Saves approximately $300–$500 per year.

Senior Freeze (Property Tax Assessment Freeze): Freezes the assessed value of property for homeowners 65 years or older with household income under $65,000. Assessed value stays at the base year level.

Key Exemptions:

Senior Citizens Exemption: Additional $5,000 reduction for seniors 65+ (in addition to homeowner exemption)
Veterans Exemption: $5,000 reduction for honorably discharged veterans
Disabled Veterans Exemption: Up to $250,000 reduction for permanently disabled veterans
Homestead Improvement Exemption: 100% exemption for new construction/improvements for 4 years

Assessment Ratio: Most counties assess at 33.3% of market value (1/3 assessment). Some counties use 100% assessment.

Tax Composition: School districts ~60%, Municipal ~20%, County ~10%, Special districts ~10%

Source: Illinois Department of Revenue — tax.illinois.gov · Updated July 2026

Frequently Asked Questions — Illinois Property Tax

What is the Illinois property tax rate for 2026?

Illinois has the 2nd highest property taxes in the United States with an average effective rate of 2.08%. County rates range from 1.0% in southern Illinois to over 2.5% in Cook, Lake, and DuPage counties. Rates include municipal, school, county, and special district taxes.

What is the Homeowner Exemption in Illinois?

The Homeowner Exemption reduces the Equalized Assessed Value (EAV) of your primary residence by $6,000. This can save homeowners $300–$500 per year depending on the local tax rate. You must apply with your county assessor.

How is Illinois property tax calculated?

Property tax is calculated as:
Tax = (Assessed Value × Assessment Ratio - Exemptions) × Tax Rate
Example: $300,000 home in Cook County (1/3 assessment, 1.8% rate, $6,000 exemption): (($300,000 × 0.333) - $6,000) × 0.018 = $5,292 annual tax.

What is the Senior Freeze program in Illinois?

The Senior Freeze (Property Tax Assessment Freeze) program freezes the assessed value of your home for homeowners 65 years or older with a total household income under $65,000. This prevents your property tax from increasing due to rising property values.

Which Illinois county has the highest property taxes?

Cook, Lake, DuPage, and Kane counties typically have the highest effective tax rates, often exceeding 2.0%–2.5%. Southern Illinois counties like Jackson, Coles, and Whiteside have lower rates around 1.0%–1.5%.

What is the veterans property tax exemption in Illinois?

Illinois offers a $5,000 reduction in Equalized Assessed Value for honorably discharged veterans. Disabled veterans may qualify for an exemption of up to $250,000 depending on the severity of their disability.

What is the assessment ratio in Illinois?

Most Illinois counties use a 33.3% (1/3) assessment ratio, meaning properties are assessed at one-third of their market value. However, some counties like Cook use a 10% assessment ratio for residential properties. The Equalized Assessed Value (EAV) is the assessed value multiplied by the state equalization factor.

When are Illinois property taxes due?

Property taxes are typically due in two installments: the first installment is due in June (usually 55% of the prior year's bill) and the second installment is due in September. Some counties offer quarterly payment options.

Can I deduct Illinois property taxes on my federal return?

Yes. Illinois property tax is deductible on your federal income tax return if you itemize. However, the SALT (State And Local Tax) deduction is capped at $10,000 ($5,000 for married filing separately) for the 2026 tax year.

Why are property taxes so high in Illinois?

Illinois property taxes are high due to several factors: high pension obligations (school districts and municipalities), high school funding costs (school taxes account for ~60% of the bill), home rule municipalities, and limited state aid to local governments.

📊 Data Methodology

Illinois property tax calculations use county-specific effective tax rates from the Illinois Department of Revenue and county assessor offices. The average rate of 2.08% is the 2nd highest in the nation. Homeowner exemption of $6,000 is applied for primary residences. Assessment ratio of 33.3% is used for most counties. Source: IL Department of Revenue · Updated July 2026

Illinois Property Tax Calculator

Illinois Property Tax Estimator — Quick Look

Illinois Property Tax Information 2026

Frequently Asked Questions — Illinois Property Tax

Related Calculators & Tools