Property tax estimate

Illinois Property Tax Calculator

Estimate annual and monthly property taxes in Illinoisusing the state's average effective property tax rate of 2.07%. Enter a home value below to see an instant estimate — free and with no sign-up.

Last updated 2026-05-31

Average property tax rate: 2.07%.

Home value

Illinois has some of the highest effective property tax rates in the nation, driven largely by local school and county levies.

Annual estimate

$10,350

Monthly estimate

$863

How to calculate property taxes in Illinois

To estimate property taxes in Illinois, multiply the home value by the local property tax rate. This page applies the state average effective rate of 2.07%, so a property valued at $500,000 would have an estimated annual property tax of $10,350.

Illinois has some of the highest effective property tax rates in the nation, driven largely by local school and county levies.

Actual tax bills can include county, city, school district, exemption, and assessment rules, so investors should verify the final number with the local assessor before closing.

Comparing returns across markets? Use the cap rate calculator and cash-on-cash return calculator, which let you include property taxes as an operating expense.

Illinois property tax FAQ

What is the average property tax rate in Illinois?

The average effective property tax rate in Illinois is about 2.07%, which is above the U.S. average of roughly 1.07%. Effective rate means annual tax divided by market value; your local rate may differ by county and city.

How much is property tax on a $400,000 home in Illinois?

Using Illinois's average effective rate of 2.07%, a $400,000 home owes about $8,280 per year in property tax, or roughly $690 per month. Actual bills vary with local rates and exemptions.

How do I calculate property tax in Illinois?

Multiply your home's value by the local property tax rate. This calculator applies Illinois's average effective rate of 2.07%, but you should confirm the exact county, city, and school district rates and any available exemptions with your local assessor.

This estimate uses Illinois's average effective property tax rate and is for educational purposes only — not tax advice. Confirm your exact rate and exemptions with your county assessor.