Looking for the national Mortgage Payment? Mortgage Payment Calculator.
Illinois Mortgage Payment Calculator — Avg $2,135/mo @ 6.30% (2026)
Illinois (IL) · State tax: 4.95% · Property tax: 2.23% · Median home (ZHVI): $275,000
As of · Sources: Zillow ZHVI, Tax Foundation, Census ACS, Freddie Mac PMMS
In Illinois, the median home price is $275,000 as of 2026, which directly determines your loan amount and monthly payment. Property taxes run 2.23% annually — about $6,133/year on a median-priced home — and are typically rolled into your monthly PITI payment. Homeowners insurance averages $1,310/year in Illinois, adding roughly $109/month to your total housing cost. With a 4.95% state income tax, Illinois residents can potentially itemize mortgage interest deductions, reducing the effective cost of homeownership.
Illinois Financial Snapshot (2026) — Mortgage Payment Calculator
Home value, monthly carrying cost, property tax, and insurance are the four levers for the mortgage payment calculator in Illinois. Every row cites a primary public dataset. Numbers reflect the most recent vintage available; refresh cadence is documented in the methodology.
How the Mortgage Payment Calculator Math Works Under Illinois Law
Every real-estate number on this page runs through the same core identity: the monthly principal-and-interest payment on a fully amortizing fixed-rate loan is M = P · r / (1 − (1+r)^(−n)), where P is the loan principal, r is the monthly rate (annual rate / 12), and n is the term in months. For a typical Illinois buyer in 2026, P starts from an $275,000 median home value (Zillow ZHVI)[1], minus a standard 20% down payment.
On top of P&I the calculator adds the two Illinois-specific carrying costs: property tax at the state effective rate of 2.23%[2] and homeowners insurance at roughly $1,310/year (NAIC state average)[3]. The Freddie Mac PMMS national average 30-year fixed rate (6.30% (Freddie Mac PMMS · week of ))[4] drives the payment curve — Illinois rate quotes can move a few basis points around that number depending on lender, loan size, and credit band.
Calc-specific note: For a fully amortising 30-year fixed, plug Illinois's ZHVI minus 20% down into the M = P·r/(1−(1+r)^−n) identity — output is principal + interest only.
Worked example — Illinois
A Illinois buyer purchasing the median home at $275,000 with 20% down ($55,000) borrows $220,000. At the PMMS 6.30% 30-year fixed, monthly P&I is $1,362. Add $511/month property tax (2.23% effective rate) and the typical Illinois homeowners premium to reach full PITI.
Local context: Illinois
Housing economics in Illinois. The median home value runs 23.2% below the U.S. baseline for Illinois is $275,000 per Zillow's home-value index. Effective property tax sits at 2.23% of assessed value, meaningfully higher than the 0.99% national average tracked by the Tax Foundation. Lenders in Illinois have quoted 6.30% on the 30-year fixed product over the trailing four-week window per Freddie Mac PMMS — the prevailing posted rate before any borrower-specific lock-ins.
Income and tax climate. Median household income in Illinois reaches $84,210 per the ACS five-year vintage, pulling above the $78,538 U.S. median. Illinois's top marginal state income tax bracket lands at 4.95% — compared to the volume-weighted national average around 4-5%. BEA's Regional Price Parity scores Illinois at 98.8 (national = 100), meaning a dollar in Illinois buys 101¢ — more goods and services than the same dollar nationally.
How Illinois's numbers shape the calculator. The mortgage payment, refinance, PMI, and home-affordability calculators all run on three local inputs that swing the answer materially: the prevailing 30-year fixed rate, the effective property tax rate as a share of home value, and the homeowners-insurance premium that the average policyholder is paying for the same coverage envelope. Illinois-specific values for each of those are pre-loaded above so the calculator's default scenario reflects what an actual buyer would see at closing, not a national average that smooths over the differences. Override any field to test a different scenario; the math reruns instantly in your browser without sending the inputs anywhere.
Local context as of 2026-06-04. Live data sources are listed in the Sources section below; each metric carries its own retrieval date.
Illinois versus the U.S. baseline
How does Illinois stack up against the national average on the metrics that drive the calculators on this page? The table below pairs the Illinois-specific reading against the U.S. baseline so you can see at a glance whether your local scenario runs above or below typical. Three to five percentage points of difference on most of these inputs translates into meaningful changes in calculator output — for example, a 50-basis-point difference in mortgage rate moves the monthly payment on a $400,000 30-year loan by roughly $130.
| Metric | Illinois | U.S. baseline | Difference |
|---|---|---|---|
| Median home value[zillow] | $275,000 | $358,000 | -23.2% |
| Property tax rate[tax-foundation] | 2.23% | 0.99% | 125.3% |
| Top marginal income tax[tax-foundation] | 4.95% | ~4.08% (volume-weighted) | 0.9 pp |
| Cost-of-living index (RPP)[bea-rpp] | 98.8 | 100.0 | -1.2 pts |
| Avg homeowners insurance[naic] | $1,310/yr | $1,754/yr | -25.3% |
How to use the Mortgage Payment Calculator
Walk through using the Mortgage Payment Calculator with Illinois-specific defaults pre-loaded from primary sources.
- Pre-fill with local dataEach calculator on this page loads with state- or city-specific defaults pulled live from primary sources (FRED, BLS, Zillow, Freddie Mac PMMS, IRS, BEA). The blue values shown next to each input are the local averages so you can see how your scenario compares to the typical case before changing anything.
- Override the inputs you controlChange any field to model your actual situation. The math reruns in your browser the moment you change a value — no signup, no API call, no data transmission. Hover over the small (i) icon next to each label to see the formula that field feeds and where the default came from.
- Read the derived valuesThe result panel shows the primary calculation (monthly payment, take-home pay, savings projection, etc.) plus the intermediate values that drive it. Each line item is labeled with the formula component it represents so you can verify the arithmetic against any agency publication, textbook, or competing calculator.
- Adjust assumptions and re-runMost calculators have a section for assumption inputs that are easy to overlook — annual raises, expected return, inflation, vacancy rate, depreciation schedule, marginal vs. effective tax treatment. The defaults are conservative; aggressive scenarios usually require explicit overrides.
- Save to "My Numbers"When the inputs match your reality, click Save to "My Numbers". The values persist to your device's local storage (IndexedDB) and reload automatically on your next visit. Nothing is transmitted to any CalcFi server — the saved-state feature is deliberately client-side only for privacy.
- Compare scenarios side by sideMost calculators offer a comparison view that shows two or more scenarios side by side. Use this to model decision points: 15-year vs 30-year mortgage, Roth vs Traditional IRA, salary vs hourly, lease vs buy. The comparison view also produces a shareable summary you can download as PNG or PDF.
Worked Examples: Mortgage Payment Calculator in Illinois Cities
Same formula, different inputs. Each city name links to its own pSEO page where the calculator is pre-filled with local medians.
| City | Median home | Median rent | HUD FMR 2BR | Median income | Est. P&I |
|---|---|---|---|---|---|
| Chicago, IL | $344,687 | $2,180/mo | $2,000/mo | $88,850 | $1,707/mo |
| Rockford, IL | $213,900 | $1,234/mo | $1,125/mo | $66,571 | $1,059/mo |
| Peoria, IL | $164,790 | $1,155/mo | $1,075/mo | $70,872 | $816/mo |
| Naperville, IL | $485,000 | $1,800/mo | $1,650/mo | $125,800 | $2,402/mo |
| Joliet, IL | $240,000 | $1,250/mo | $1,150/mo | $68,500 | $1,188/mo |
Sources: Zillow ZHVI + ZORI[1], HUD FMR[2], Census ACS[3], Freddie Mac PMMS[4].
How Illinois Compares to Neighboring States
Moving one state over changes the mortgage payment numbers. Compare median home value (Zillow ZHVI), top marginal income tax rate, effective property tax rate, and the BEA all-items Regional Price Parity across Illinois and its border states.
| State | Median home | Top inc tax | Prop tax rate | RPP (US=100) |
|---|---|---|---|---|
| Illinois (this page) | $275,000 | 4.95% | 2.23% | 98.8 |
| Indiana side-by-side | $235,000 | 3.00% | 0.85% | 92.1 |
| Iowa | $215,000 | 3.80% | 1.50% | 88.8 |
| Kentucky side-by-side | $205,000 | 4.00% | 0.83% | 89.9 |
| Michigan side-by-side | $245,000 | 4.25% | 1.58% | 94.3 |
Sources: Zillow ZHVI[1], state Departments of Revenue / Tax Foundation[2], Tax Foundation property taxes[3], BEA Regional Price Parities[4].
What Changes Your Result in Illinois
- Down payment size:Illinois's typical down payment is 11.0%according to NAR survey data. Every 5% shift changes the monthly P&I by roughly 5–6% of the headline payment.
- First-time buyer programs:Illinois runs state-level first-time buyer programs (DPA, MCC) that can cut effective down payment costs by $5,000–$15,000 for qualifying buyers. See programs block below.
- County-level property tax variance:The state effective rate shown in the snapshot is a statewide weighted average. Within Illinois, county rates can swing ±30% around the median, especially in border counties with differing school-district mill levies.
Related Calculations for Illinois
These calculators share inputs with the mortgage payment formula, so pair them to pressure-test your answer from multiple angles.
- Illinois's mortgage affordability rules — affordability is the flip side of monthly payment.
- property tax costs in Illinois — property tax is a line in the PITI payment.
- Illinois Home Insurance Estimator — homeowners insurance is the third line in PITI.
- Illinois pmi removal numbers for 2026 — PMI is added when LTV > 80%.
- extra mortgage payment by Illinois — prepayments reshape the amortization schedule.
- Illinois refinance savings numbers for 2026 — refinancing changes the payment you calculated.
How Illinois Compares
| Metric | Illinois | National Avg | IN | IA | KY |
|---|---|---|---|---|---|
| Median Home Price | $275,000 | $420,000 | $265,000 | $245,000 | $265,000 |
| Property Tax Rate | 2.23% | 1.07% | 0.85% | 1.57% | 0.85% |
| State Income Tax | 4.95% | 4.6%* | 3.23% | 5.7% | 5% |
| Avg Insurance Cost | $1,310/yr | $1,544/yr | $1,320/yr | $1,320/yr | $1,440/yr |
| Cost of Living Index | 98.8 | 100 | 90 | 87 | 88 |
| Household Income — p25 | $41,110 | $41,401 | $40,488 | $45,807 | $31,035 |
| Household Income — p50 (median) | $84,105 | $83,592 | $76,200 | $85,000 | $64,553 |
| Household Income — p75 | $158,064 | $153,000 | $135,377 | $135,696 | $122,016 |
*Average of states that levy an income tax. 2026 estimates. Illinois exempts ALL retirement income from state tax — one of the most retirement-friendly policies in the U.S.[3] Income percentiles from DQYDJ/Census CPS 2024[4].
Illinois Real Estate Tips
Illinois has a split personality: Chicago metro has higher prices ($350-500K+) while downstate median homes are $150-250K.
Illinois' effective property tax rate of 2.23% (varies by county, state avg ~0.85% in our data) is among the highest in Cook County.
The Illinois Housing Development Authority (IHDA) offers multiple down payment assistance programs.
Illinois is a judicial foreclosure state — the process takes 12-18 months, giving homeowners time to negotiate.
Illinois Homebuyer Programs
- ✓IHDA 1stHomeIllinois — $7,500 in DPA as a forgivable loan (forgiven after 5 years).
- ✓IHDA SmartBuy — helps buyers with student loan debt by paying off up to $40,000.
- ✓IHDA Access Forgivable — up to $6,000 in DPA, forgivable after 10 years.
Frequently Asked Questions: Mortgage Payment Calculator in Illinois
How does the mortgage payment work in Illinois?
- The mortgage payment calculator runs the standard amortization + PITI formula and layers on Illinois's 4.95% state income tax, 2.23% property tax rate, and cost-of-living index of 98.8. All inputs stay in your browser.
What is the average home price in Illinois?
- The median home price in Illinois is $275,000 as of 2026. Prices vary widely by metro area, with urban centers typically 20–50% above the statewide median.
What is the property tax rate in Illinois?
- Illinois has a property tax rate of 2.23% of assessed home value. On a $275,000 home, the annual property tax is approximately $6,133.
Is Illinois a good state to buy a home?
- Illinois has a cost of living index of 98.8 and a median home price of $275,000. With a 4.95% state income tax, affordability depends on your income and local market conditions. Property taxes at 2.23% are a key ongoing cost.
Does Illinois tax retirement income?
- No. Illinois is one of the most retirement tax-friendly states — Social Security, pensions, 401(k), and IRA distributions are all exempt from state income tax.
What is Illinois' estate tax exemption?
- Illinois has a state estate tax with a $4M exemption — significantly below the federal $13.99M exemption. Estates between $4M and $13.99M face state estate tax even if they're exempt federally.
What is the IHDA SmartBuy program?
- IHDA SmartBuy helps first-time buyers by paying off up to $40,000 in student loan debt as part of the home purchase, removing a major barrier to homeownership.
Is the mortgage payment free to use for Illinois residents?
- Yes — the Mortgage Payment Calculator is 100% free, with no signup required. All Illinois-specific numbers (median home price $275,000, property tax 2.23%, 4.95% state income tax) are prefilled from public datasets. Calculations run in your browser; no data is sent to our servers.
Where does the Illinois data on this page come from?
- Data is sourced from the U.S. Census Bureau (ACS), the Tax Foundation, BLS OEWS wage tables, Zillow ZHVI for home values, and Freddie Mac PMMS for mortgage rates. Each number is timestamped and refreshed via our hourly ETL.
How often is the Illinois mortgage payment updated?
- Source data is re-pulled on an hourly cadence for live series (mortgage rates) and on each new vintage release for ACS / Tax Foundation tables. Page caches revalidate every 24 hours via Next.js ISR.
Can I export results from the Illinois mortgage payment?
- Yes — every calculator supports CSV / PDF export from the result panel. No account required. Saves stay in your browser; nothing is uploaded.
Does the mortgage payment replace tax or financial advice?
- No. The Mortgage Payment Calculator provides educational estimates using public data and standard formulas. It is not personalized tax, legal, or investment advice. For decisions with material consequences, consult a licensed professional.
More Calculators
← Back to Mortgage Payment CalculatorRelated Calculators for Illinois
Calculate for Neighboring States
Illinois Financial Data (2026)
- State Income Tax
- 4.95%
- Property Tax Rate
- 2.23%
- Median Home Price
- $275,000
- Annual Property Tax (median home)
- $6,133
- Avg Homeowners Insurance
- $1,310/year
- Cost of Living Index
- 98.8 (100 = avg)
- State Estate Tax
- Yes
- State Abbreviation
- IL
Compare Illinois with other states
Every number on this page reads from the same CalcFi data repository used by the Live Data pages below — the figures stay consistent.
Home Prices by State
Zillow ZHVI across all 50 states
Property Tax by State
Effective rate × ZHVI = annual bill
Household Income by State
FRED real median + percentile bands
Cost of Living by State
BEA RPP all-items + housing
No-Income-Tax States
Full list + trade-offs
Current Interest Rates
Treasury curve + PMMS + FDIC
How we compute this — methodology
CalcFi pSEO pages combine three inputs: (1) the calculator formula itself, which runs client-side so no inputs leave your browser; (2) state-level financial constants from primary public datasets; and (3) national benchmarks for comparison. The Illinois page uses the property tax rate (2.23%), median home price ($275,000), and 4.95% state income tax from the sources listed below.
Refresh cadence:state tax brackets and minimum wage rates are reviewed annually after each state's legislative session. Property tax, median home price, insurance, and cost-of-living figures are reviewed annually against the primary sources. Income percentiles are refreshed when the Census CPS/IPUMS releases update (typically September). Page-level dateModified matches the last editorial review date, shown above.
Known limits: statewide averages mask large intra-state variance — county-level property tax and metro-level home prices differ significantly from the figures shown. For the most precise calculations, cross-check the output against your actual county assessor and the latest federal/state tax tables at filing time.
More Cities in Illinois
Use Mortgage Payment Calculator for any city in Illinois.
Related Calculators & States
Related Calculators for Illinois
National reference: Mortgage Payment Calculator
Sources
Every number on this page cites a primary public dataset. Last reviewed (auto-bumped by the next ISR refresh after an ETL run).
- U.S. Department of Labor, Wage and Hour Division — State Minimum Wage Laws. dol.gov/agencies/whd/minimum-wage/state. Retrieved 2026-05-21.
- Tax Foundation — State Individual Income Tax Rates and Brackets. taxfoundation.org/data/all/state/state-income-tax-rates-2025. Retrieved 2026-05-21.
- Composite state financial context (median home price, property tax effective rate, cost of living index) cross-referenced against the primary sources below.
- Census Current Population Survey / IPUMS CPS (income year 2024) via DQYDJ state tools. dqydj.com. Retrieved 2026-05-21.
- Freddie Mac Primary Mortgage Market Survey (PMMS) — weekly national mortgage rates — www.freddiemac.com/pmms. Retrieved 2026-05-21.
- Zillow Research — ZHVI (Zillow Home Value Index) + ZORI (Zillow Observed Rent Index) — www.zillow.com/research/data. Retrieved 2026-05-21.
- Tax Foundation — Property Taxes Paid as % of Owner-Occupied Housing Value; State Tax Rates and Brackets; Estate/Inheritance; Social Security Taxation — taxfoundation.org/data/all/state. Retrieved 2026-05-21.
- NAIC Dwelling Fire, Homeowners Owners, and Homeowners Tenants Insurance Report — content.naic.org/article/homeowners-insurance-report. Retrieved 2026-05-21.
- HUD Fair Market Rents — 50th-percentile 2-bedroom FY — www.huduser.gov/portal/datasets/fmr.html. Retrieved 2026-05-21.
- U.S. Census Bureau — American Community Survey (ACS) 5-year estimates — www.census.gov/programs-surveys/acs. Retrieved 2026-05-21.
- State Departments of Revenue — official bracket + deduction publications (one primary URL per state; linked in the brackets table below) — taxfoundation.org/data/all/state/state-income-tax-rates. Retrieved 2026-05-21.
- Bureau of Economic Analysis — Regional Price Parities by State — www.bea.gov/data/prices-inflation/regional-price-parities-state-and-metro-area. Retrieved 2026-05-21.
- U.S. Department of Labor — State Minimum Wage Laws — www.dol.gov/agencies/whd/minimum-wage/state. Retrieved 2026-05-21.
- FRED (Federal Reserve Economic Data) — real median household income, unemployment, HPI, LFPR per state — fred.stlouisfed.org. Retrieved 2026-05-21.
- BLS Occupational Employment and Wage Statistics (OEWS) — state-level occupational wages — www.bls.gov/oes. Retrieved 2026-05-21.
CalcFi does not sell data. If you spot an error, email hello@calcfi.app with the URL and the correct figure.