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Illinois property tax calculator

Illinois's effective property tax rate averages about 2.08% of market value — above the roughly 1.0% national average. That's roughly $5,616 a year on the state's $270,000 median home. The calculator is pre-filled with that rate.

$5,616 / year

Per month
$468.00
Assessed value
$270,000
Effective rate
2.08%

Rates vary by county and city — check your local assessor for the exact figure.

How it works

Your county assessor sets a taxable (assessed) value, which may be below market value, then applies the combined rate of every taxing body — county, city, school district, and any special levies. A homestead or senior exemption reduces the assessed value before the rate is applied, so an owner-occupied home often owes less than the headline rate on a rental or second home.

For comparison, homeowners insurance in Illinois averages about $2,000 a year, so on the median home the tax bill is the larger of the two escrow items. Illinois has the second-highest effective property tax rate in the country, so even with modest home prices the annual tax bill is large — often the biggest single line in the monthly payment outside principal and interest.

Frequently asked questions

What is the property tax rate in Illinois?
Illinois's effective property tax rate averages about 2.08% of a home's market value — above the roughly 1.0% national average. That works out to roughly $5,616 a year on the state's $270,000 median home.
How is property tax calculated in Illinois?
Your county assessor sets a taxable (assessed) value, which may be below market value, then applies the combined rate of every taxing body — county, city, school district, and special levies. Exemptions like a homestead exemption reduce the assessed value first.
Property tax vs. homeowners insurance in Illinois — which costs more?
On the median home, Illinois property tax runs about $5,616 a year versus roughly $2,000 for insurance. Property tax is the larger of the two here.
Can I lower my property tax bill in Illinois?
Most owners can file a homestead exemption on a primary residence, and you can appeal the assessed value if comparable sales suggest it's too high. Senior, veteran, and disability exemptions may also apply.

Learn more: How property tax works

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