Illinois Mortgage Calculator 2026

Frequently Asked Questions — Illinois Mortgage

What is the property tax on a $265,000 home in Illinois?

On the Illinois median home value of $265,000, the annual property tax is approximately $6,016 based on the 2.27% effective rate. That works out to $501/month added to your mortgage payment. Property tax is paid to local governments and can vary within the state by county and municipality — this figure represents the statewide effective average.

What is total PITI on a $400,000 home in Illinois?

On a $400,000 home in Illinois with 20% down ($80,000), a 30-year fixed mortgage at 6.99%, and 2.27% property tax, the estimated monthly PITI is: Principal & Interest $2,127, Property Tax $757, Homeowner's Insurance ~$167, Total PITI $3,050/month.

How does Illinois's property tax compare to the national average?

Illinois's 2.27% effective property tax rate is significantly above the national average of ~1.07%. On the median Illinois home ($265,000), you'll pay about $265/month more in property tax than the national average homeowner. This substantially increases your total PITI payment and should be factored into your affordability calculations.

How can I lower my property tax in Illinois?

There are several ways to reduce your property tax bill in Illinois: (1) Appeal your assessment — if your home's assessed value is higher than comparable recent sales, file a formal appeal with your local assessor's office. (2) Claim exemptions — most states including Illinois offer homestead exemptions, senior exemptions, and veteran exemptions that reduce your taxable assessment. (3) Review your property record — errors in square footage, bedroom count, or condition can inflate your assessment. (4) Watch for assessment increases — in rapidly appreciating markets, annual increases may outpace your area's actual market. Many counties allow only a capped increase per year for owner-occupied homes.