Illinois Property Tax Calculator
Illinois's average effective property tax rate is 1.88% of home value in 2026. On a $350,000 home that's about $6,580 a year ($548/month in escrow). The typical Illinois homeowner pays around $5,298/year on a $273,186 home. Enter your home value below for an estimate.
$3,850 / year
$320.83/month in escrow · effective rate 1.10% of value
Effective rates are state averages (Tax Foundation / Census ACS). Your local rate, assessment ratio and exemptions vary by county — adjust the rate for an exact bill. How we calculate →
Illinois property tax rate in 2026
Illinois has an average effective property tax rate of 1.88% — that is, annual property tax as a share of home value. The median Illinois homeowner pays about $5,298 a year on a home worth around $273,186. Rates are set locally by counties, cities and school districts, so your exact bill depends on where in Illinois you live.
The calculator above applies Illinois's average rate to your home value and shows the annual and monthly (escrow) amounts. Adjust the rate to your county's figure for an exact estimate, and add any homestead exemption you qualify for.
Property tax by home value in Illinois
Estimated annual Illinois property tax at the 1.88% average effective rate:
$250,000 home → $4,700/yr · $350,000 home → $6,580/yr · $500,000 home → $9,400/yr.
Divide by 12 for the monthly escrow amount your lender collects. These use the statewide average; your local rate and exemptions change the final bill.
How Illinois property tax is calculated
Illinois counties assess your home's value and apply a local millage rate; the effective rate of 1.88% rolls that into a single share of market value. To estimate your tax, multiply your home value by 1.88% (or your county's exact rate), then subtract any homestead or senior exemption. The calculator above does this and also shows the monthly escrow figure.
Illinois property tax — frequently asked questions
What is the property tax rate in Illinois?
Illinois's average effective property tax rate is 1.88% of home value in 2026. Local rates set by counties and school districts vary around that average, so check your county for the exact figure.
How much is property tax on a $350,000 home in Illinois?
At Illinois's 1.88% average effective rate, a $350,000 home owes about $6,580 a year — roughly $548 a month through escrow. Your local rate and exemptions may change this.
What is the average property tax in Illinois?
The typical Illinois homeowner pays about $5,298 a year in property tax, on a median home value of around $273,186 — an effective rate near 1.88%.
How is Illinois property tax calculated?
Multiply your home's value by Illinois's effective rate (1.88% on average, or your county's exact rate), then subtract any homestead exemption. Counties assess value and apply a millage rate; the calculator above estimates the annual and monthly amounts.
Property tax by county in Illinois (102 counties, ranked)
Effective property tax rate for every Illinois county with Census data, highest to lowest. Pick yours for a county-specific estimate:
Property tax by city in Illinois (335 cities, ranked)
Effective property tax rate for every Illinois city of 5,000+ residents with Census data, highest to lowest. Pick yours for a city-specific estimate:
Property tax calculators by state
National property tax calculator · then pick any state:
Researched & verified by the Calcuris Data & Research Team. How we build and check our tools →