How much house can I afford in Illinois?
The median home in Illinois costs roughly $260,000. With a 10% down payment at a 6.85% mortgage rate, the all-in monthly payment is about $2,401 — which means you'd typically need an annual income near $102,906 to keep housing under the standard 28% front-end ratio.
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What the Illinois numbers actually mean
At today's mortgage rates, the headline payment isn't the only number that matters in Illinois. Property tax adds roughly $492/month at the median home price — a rate of 2.27%, which is well above the national average — property tax alone can add hundreds of dollars to your monthly payment vs. low-tax states.
The required income ($102,906) is roughly $26,906 higher than the Illinois median household income ($76,000). That gap is why affordability feels tight even for households earning around the state median — the median home was priced for buyers earning above-median incomes when rates were lower.
The 28% / 36% rule, briefly
Lenders typically want your housing payment (PITI) to stay under 28% of your gross monthly income, and your total debt payments (housing plus car loans, student loans, and minimum credit card payments) to stay under 36%. The first ratio is called the front-end DTI; the second is the back-end DTI.
The math above uses the front-end test. If you have meaningful other debt, you'll likely qualify for less than the income figure above suggests, because the back-end rule binds first. Use the full calculator to factor in your real other-debt monthly payments.
What changes the Illinois number most
Three levers move your affordability in Illinois dramatically more than the rest: your mortgage rate, your down payment, and PMI. A 1.0% lower mortgage rate on the median Illinois home saves roughly $195/month. Crossing the 20% down threshold eliminates PMI, which on a low-down-payment loan costs another 0.5–1.5% of the loan amount per year.
For a deeper look at PMI mechanics, read when PMI triggers and how to drop it. For how state property tax flows through your monthly payment, see the guide to escrow.
Frequently asked questions
What income do I need to afford a $260k home in Illinois?+
At a 6.85% rate with 10% down and 2.27% property tax, the all-in monthly payment is about $2,401. Using the standard 28% front-end rule, you'd need roughly $102,906 in annual gross income.
How does Illinois's property tax compare?+
Illinois's effective rate of 2.27% is well above the national average — property tax alone can add hundreds of dollars to your monthly payment vs. low-tax states.
Does this include HOA fees?+
No. HOAs vary too much to assume a default. If your target home is in an HOA, add the monthly fee directly to the payment above — it doesn't change the loan math, but it raises your DTI and effectively reduces what you can afford on a given income.
What credit score do I need to qualify?+
Conventional loans typically require a 620+ credit score; FHA loans go down to 580 with 3.5% down (or 500 with 10% down). A higher score lowers your rate, which compounds into thousands of dollars over the loan.