Estimate your monthly mortgage payment in Illinois — principal & interest plus Illinois property tax and homeowner’s insurance.
Buying a home in Illinois: what to know
Illinois has the tightest inventory recovery in the nation: active listings sit at just ~39% of pre-pandemic levels (Chicago-area inventory down 53% since 2019), pushing the typical home value up 3.9% YoY to $297,573. (Illinois Policy Institute citing Zillow/Realtor.com, Oct 2026) With a median home price of $297,573 (Zillow ZHVI, Aug 2026 (+3.9% YoY)), 20% down means borrowing about $238,058 — within the 2026 conforming limit of $832,750 for most Illinois counties. Property taxes run about 1.88% of assessed value (effective rate), and insurance averages $1,343 a year statewide — both baked into the calculator above. First-time buyers should check out IHDA IHDAccess Home and IHDA IHDAccess Forgivable before shopping lenders.
Illinois mortgage facts
| Fact | Figure |
|---|---|
| 2026 conforming loan limit (1-unit) | $832,750 |
| Median home price | $297,573 |
| Median effective property tax rate | 1.88% |
| Average homeowner’s insurance | $1,343/year |
Data as of October 2026. Sources: FHFA (2026 conforming limits), Zillow ZHVI (Aug 2026 (+3.9% YoY)), Tax Foundation (2024 ACS data (Tax Foundation ‘Property Taxes by State and County, 2026’ report)), NAIC via Insurance Information Institute (2022 (NAIC data, reported by III May 2025)); rate: 7.40% (Freddie Mac PMMS, week ending October 15, 2026)
Illinois first-time buyer programs
- IHDA IHDAccess Home — Up to $15,000 (6% of purchase price) in down payment/closing-cost help as a deferred 0%-interest second mortgage; no payments until sale, refinance, or 30 years. First-time buyers (veterans/targeted-area buyers exempt). Official site
- IHDA IHDAccess Forgivable — Up to $6,000 (4% of purchase price) second loan for down payment/closing costs with no monthly payments, forgiven if the buyer lives in the home 10 years; a prorated portion is repaid if sold or refinanced sooner. Official site
How to use this calculator
Start with Illinois’s median home price (pre-filled above) or type the price of a home you’re eyeing. The calculator assumes 20% down — the threshold that avoids private mortgage insurance on conventional loans — and applies Illinois’s median property tax rate and average insurance premium so the monthly figure reflects the true cost of owning, not just principal and interest. Adjust the rate to a quote you’ve received; even half a point moves the payment by hundreds on a Illinois-priced home. Compare a 15-year term against 30 years to see the lifetime-interest tradeoff before you commit.
Worked example: a median Illinois home
Take a median-priced Illinois home at $297,573. With 20% down ($59,515), the loan amount is $238,058. At 7.40% (Freddie Mac PMMS, week ending October 15, 2026) on a 30-year fixed term, principal and interest come to $1,648.27/month. Add property tax of about $466.20/month (1.88% of $297,573, divided by 12) and insurance of about $111.92/month ($1,343 a year), for a total estimated payment of $2,226.38/month. Over 30 years, total interest would be about $355,318. Your rate, down payment, and county tax bill will move these numbers — use the calculator above with your own figures.
What is the conforming loan limit in Illinois for 2026?
The 2026 baseline conforming loan limit for a one-unit property is $832,750 across most of Illinois, per the FHFA’s November 2025 announcement.
How much are property taxes in Illinois?
The median effective property tax rate in Illinois is about 1.88% of a home’s assessed value (Tax Foundation, 2024 ACS data (Tax Foundation ‘Property Taxes by State and County, 2026’ report)). On a $297,573 home, that’s roughly $5,594 a year, or $466.20 a month — already included in the calculator above. Actual bills vary by county and municipality.
How does IHDAccess Forgivable assistance actually work?
It’s a second loan of up to $6,000 (4% of the price) with 0% interest and no monthly payments; it’s fully forgiven if you live in the home for 10 years, but a prorated share must be repaid if you sell or refinance within the first 10 years.
Why are Illinois monthly housing costs so high relative to the Midwest?
Illinois has the highest effective property tax rate in the U.S. (1.88% per the Tax Foundation), so escrow payments are large — and severe listing shortages (39% of pre-pandemic levels) keep prices climbing.