Mortgage Payment Estimates for Illinois by Home Price

Why the Illinois payment looks the way it does

Between the two non-financing costs on a $300,000 home — the price point closest to the statewide median — property tax edges out insurance in Illinois: $470/mo against $200/mo. Illinois carries the 1st-highest effective property tax rate of the 51 states and D.C., per the Tax Foundation. Property tax is the standout figure here: Illinois has the 1st-highest effective property tax rate of the 51 states and D.C..

Illinois's median home price rose 3.8% over the past year, per Zillow — starting to outpace typical wage growth. Prices vary widely by metro: Naperville at $518,000, Chicago at $340,000, Evanston at $425,000, Peoria at $155,000, Rockford at $178,000, all per Zillow ZHVI 2026.

The math, step by step

Using the price point closest to Illinois’s own median — $300,000 — here is how every line item adds up to the monthly payment:

Start with financing. At Freddie Mac Primary Mortgage Market Survey's 2026-06 rate of 6.4% on a standard 30-year fixed loan, a $240,000 loan (20% down on a $300,000 home) amortizes to a principal-and-interest payment of $1,501/mo. Put down only 10% instead and the loan grows to $270,000, which raises principal and interest to $1,689/mo — $188 more every month for a loan that's $30,000 larger, before tax, insurance, or PMI enter the picture.

Property tax adds $470/mo, derived by applying Illinois's 1.9% effective rate (Tax Foundation, statewide average across all taxing jurisdictions) to the home's assessed value and dividing by twelve. That statewide figure hides real county variation: Lake County taxes at 2.2% against 0.8% in Hardin County — a 2.6x spread between the two, so the true monthly tax line on any specific property in Illinois depends heavily on which county it sits in. How that assessed value itself gets set also varies: Triennial reassessment cycle in Cook County (north suburbs, south suburbs, Chicago each on 3-year rotation). Annual reassessment in downstate counties. And the $470/mo figure above is the pre-exemption number: an owner-occupant can bring it down further — General Homestead Exemption reduces assessed value by up to $10,000 (Cook County) or $6,000 (all other counties). Homestead Improvement Exemption caps value increases on new improvements for 4 years. Senior Citizens Homestead Exemption adds $5,000 reduction. Assessment-to-market-value ratios vary by county (Cook: 10% for residential).

Tornadoes and 3 other named risks are the kind Illinois insurers price into every policy — the reason the $2,402/yr average premium (÷12 = $200/mo) sits where it does; this is the same per-price-point figure the table above sums, so the two always agree by construction. Unlike principal and interest, that line is flat: it doesn't move with the down payment. Note: this is an earlier snapshot of the same Insurance.com series RealCostIQ now publishes at $2,802/yr in the Insurance section below — the PITI math above hasn't been rebuilt against the newer figure yet, so treat the monthly line here as the modeling basis and the figure below as the current published rate.

Those three lines total $2,171/mo at 20% down — matching the table above, since 20% down clears the PMI threshold here. 20% down ($60,000) skips PMI. 10% down ($30,000) adds it at 0.46% of the loan a year (mortgage-insurer rate card, 720–739 credit score), or $104/mo — $2,463 total instead of $2,171. You can ask the lender to cancel it around month 94, when the balance reaches $240,000 (80% of the original price) — roughly $9,729 paid in before then. If you don't ask, the Homeowners Protection Act requires it to end automatically when the balance is scheduled to reach 78%.

At this $300,000 price point specifically: qualifying at 20% down takes $93,059/yr under the 28% rule ($72,379/yr under the looser 36% rule); at 10% down it's $105,537/yr — $12,478 more, a meaningful jump — dropping to 10% down doesn't just mean a smaller check at closing, it raises the bar to qualify. A household earning Illinois's own median income of $72,205 falls short of the 20%-down bar at this specific price point, by $20,854 — this price point requires an above-median income here. At 10% down, where the higher loan amount raises the bar further, that same median household falls short by $33,332.

What financing costs across the price range

Total interest over the full 30-year term at 20% down runs from $200,291 on a $200,000 Illinois home to $751,093 on a $750,000 one — both figures assume the loan is held to term with no extra principal payments. At the $300,000 price point used throughout this page, that works out to $300,437 in interest on a $240,000 loan. At 10% down instead, PMI adds $6,486 in total premiums on the $200,000 home before it cancels, and $24,323 on the $750,000 home — cost that buys nothing but the right to put down less cash up front, and that a 20%-down buyer avoids at either price.

At 20% down and the 28% front-end DTI rule, a $200,000 home in Illinois needs $64,899/yr to qualify, while a $750,000 home needs $219,780/yr. That's the binding number for a buyer with no other debt. Once other debt is added to the picture, the 36% back-end ratio is the one that governs, and it takes less income to clear — $50,477/yr and $170,940/yr for the same two homes — but only because it's now competing with a car payment or student loan for that same 36%, not because the home got cheaper to finance. That statewide range plays out locally too: Peoria's median of $155,000 and Naperville's median of $518,000 sit on opposite ends of the same qualifying-income curve.

Can a median-income household actually afford this?

A household earning Illinois's median income of $72,205 falls meaningfully short — $18,309, or 25% — of the $90,514/yr needed to buy the median-priced home at 20% down at 7.03% (Freddie Mac PMMS, week of September 24, 2026) under the standard 28% DTI rule. Lenders check two DTI thresholds, not one: the 28% front-end ratio covers housing costs alone ($93,059/yr at this page's $300,000 price point and its 6.4% rate), while the looser 36% back-end ratio also counts other debt and takes less income to clear on housing alone — $72,379/yr here. The catch: that 36% is shared with a car payment or student loan, so a buyer carrying other debt can end up needing MORE total income than the 28% figure suggests, not less. The two income figures use different rates — 6.4% for this page's price points, 7.03% for the median-home figure — so they are not directly comparable. The price a median-income household can actually afford under the 28% rule at 7.03% (Freddie Mac PMMS, week of September 24, 2026) is $221,058 — $61,851 below the statewide median of $282,909. That gap is not uniform statewide: DuPage County, Lake County, McHenry County price out median earners fastest, while Hardin County, Pope County, Alexander County stay within reach on a median income.

Cash to close

Illinois's closing costs sit at the high end of typical for the country — 2.3% of the purchase price (Near average statewide; Chicago closings significantly higher due to municipal transfer tax). On this $300,000 home that's $6,900. Title insurance ($1,400) is a meaningful chunk of that figure, though not the majority of it. Layered on top of the down payment, total cash to close runs $66,900 at 20% down or $36,900 at 10% down — the closing-cost portion is identical either way; only the down payment changes. Unlike property tax — which runs 2.2% in Lake County versus 0.8% in Hardin County — closing costs don't swing nearly as much by county; the figure above is a reasonable statewide planning number wherever in Illinois the home sits. State Real Estate Transfer Tax: $0.50 per $500 of sale price (0.10%), paid by the seller (35 ILCS 200/31-10); the buyer owes $0 on the state tax under current law. Chicago's municipal transfer tax is separate: per the City of Chicago Dept. of Finance, the buyer pays $3.75 per $500 (0.75%) and the seller pays $1.50 per $500 (0.30%), for a combined Chicago rate of 1.15% on top of the state tax. The buyer-side figure below reflects only the statewide, seller-paid tax; Chicago's separate municipal buyer-side tax (0.75%) is not modelled in this state-level figure. Illinois does not require an attorney at closing, though buyers may hire one at their own cost. Once the sale closes, Illinois homeowners can file for the homestead exemption described in the property-tax section above — it isn't automatic, and it only reduces the tax line going forward, not any cost at the closing table itself.

Insurance and flood risk

Illinois homeowners pay an average of $2,802/yr for homeowners insurance at $300,000 dwelling coverage ($234/mo), per Insurance.com — Average homeowners insurance rates by state (Rate Analysis 2026) — against a national average of $2,765/yr. The named factors — each explained below — are tornadoes, severe hailstorms, flooding, extreme cold and ice storms. That ranks 23rd most expensive of the 51 states and D.C. — 101% of the national average. The private insurance market has not seen the large-scale carrier exits reported in some higher-risk states. Flood risk is moderate; 1.3% of homes carry NFIP coverage, concentrated in Illinois River valley communities (Peoria, Tazewell, Mason counties) and Mississippi River border communities (Rock Island, Whiteside, Carroll counties). The average NFIP premium runs $1,043/yr, and lenders require coverage in FEMA Zones Zone A, Zone AE. Premiums vary sharply by county: Jo Daviess County (~$1,100/yr), Carroll County (~$1,200/yr), Stephenson County (~$1,300/yr) run cheapest, while Alexander County (~$2,800/yr), Pulaski County (~$2,700/yr), Massac County (~$2,600/yr) run highest — the statewide average above blends both ends. Private flood insurance is available in Illinois alongside the NFIP, giving buyers outside a mandatory-purchase zone a second option for coverage. 57,000 NFIP policies are currently in force statewide.

Tornadoes — northern and central Illinois in Tornado Alley fringe are a narrow, high-severity damage path rather than a broad one — insurers price it as a probability-weighted catastrophe even though any single property's odds of a direct hit are low. Severe hailstorms — significant hail belt across the state are a frequency risk: common enough in an ordinary year to move the loss-ratio math at every renewal, not just after a single storm. Flooding — Chicago and Mississippi River valley areas is typically excluded from a standard homeowners policy outright, which is why NFIP or private flood coverage is a separate line item, not folded into the premium above. Extreme cold and ice storms — freeze-thaw cycles stress foundations and plumbing are a seasonal claim pattern — frozen pipes and ice damming are common enough that insurers build the expected cost into every renewal rather than treating a hard winter as a one-off.

Rent vs. buy in Illinois

The median asking rent in Illinois is $1,669/mo, putting the statewide price-to-rent ratio at 14.1 — favors buying in most downstate markets; chicago metro is more neutral at ~20 due to high property taxes and prices. On the median-priced home, RealCostIQ's breakeven math puts the point where buying overtakes renting at 6.5 years of ownership, before accounting for any home-price appreciation. Naperville (21.5) and Peoria (9.8) sit far enough apart that the statewide ratio above is a poor stand-in for either one specifically.

Loan limits

The 2026 conforming loan limit for a single-unit home in Illinois is $832,750 statewide — Illinois has no FHFA-designated high-cost county, so that ceiling applies everywhere in the state. A loan above it is a jumbo loan, which typically carries stricter underwriting and a different rate. A buyer financing the statewide median home at 20% down borrows only about $226,327 — comfortably under the limit, with $606,423 of headroom before jumbo underwriting would apply.

Down payment assistance

Illinois's primary down payment assistance program is IHDA Access Forgivable, administered by Illinois Housing Development Authority (IHDA). It offers up to $6,000 as a forgivable loan, for buyers under 80% of area median income on homes up to $481,176 — comfortably above Illinois's own median home price, so the cap isn't the binding constraint for a typical buyer here. It forgives in full after 10 years as long as the buyer stays in the home — leave sooner and some or all of it converts to a repayment obligation. 2 additional programs exist statewide: IHDA Access Deferred (up to $7,500, a deferred-payment loan) and IHDA Access Repayable (up to $10,000, a repayable second loan). Local programs can generally be stacked with the state program, so a buyer isn't limited to one source of assistance.

First-time buyer mortgage programs

Beyond down payment assistance, Illinois first-time buyers can also use IHDAccess Forgivable Mortgage, run by Illinois Housing Development Authority (IHDA): 30-year fixed-rate mortgage with forgivable down payment assistance. It covers loans up to $832,750 with as little as 3% down; income limits vary by county; generally 80%–120% AMI. Eligibility requirement: must not have owned a primary residence in the past 3 years; minimum 640 credit score. Multiple IHDAccess program tiers available; homebuyer education required. A second program, IHDAccess Down Payment Assistance (Illinois Housing Development Authority (IHDA)), covers forgivable second mortgage — 0% interest, up to $15,000 in assistance. Up to $6,000 in forgivable DPA for qualified buyers; amount based on loan type.

Beyond PITI: what else the payment doesn’t cover

Isolate just the mortgage — principal and interest, nothing else — and the payment on Illinois's median-priced home is $1,413/mo. The number a buyer should actually budget to is $2,634/mo, three-quarters again on top of the mortgage payment (86% higher). The single biggest add-on in Illinois is property tax, at $443/mo — ahead of every other non-mortgage line item in the true-cost breakdown. Maintenance reserves is the runner-up at $354/mo — the two together are the main reason the true-cost figure runs so far above the mortgage-alone number.

PITI is not the full cost of owning. RealCostIQ's true-monthly model adds $354/mo — $4,244/yr — in maintenance reserves (1.5% of home value annually — freeze-thaw cycles crack driveways, foundations, and exterior caulking annually; severe hail seasons periodically require roof and siding replacement), and $124/mo in electricity plus $100/mo in gas ($224/mo total, per the U.S. Energy Information Administration). Combined, that pushes the true monthly cost of the median home to $2,634 — true monthly cost is 86% higher than mortgage alone — driven by the nation's highest effective property tax rate. That reserve isn't arbitrary: a typical HVAC system here runs 15-20 years (cold winters require robust heating; central AC needed in humid summers), and a typical roof runs 20-25 years (hail and ice dam formation are primary wear factors), per Fannie Mae 1-2% guideline; Bankrate Hidden Costs Study 2025 — both figures already price in Illinois's own climate rather than a national average. The 1.5% reserve rate is sized to replace both on that state-specific schedule, without a special assessment or a credit-card repair. HOAs in Illinois are governed by Illinois Condominium Property Act (765 ILCS 605), which requires associations to maintain a reserve fund; the main cost drivers are Chicago condo market (highest fees nationally), aging infrastructure in older buildings, property management costs in metro Chicago.

See the full Illinois homebuyer resource page for property tax by county, first-time buyer programs, and utility costs, or compare payments across all eight price points.