Calculate your real Illinois mortgage payment with current rates (6.50%), county-by-county property tax (Cook 1.85%, DuPage 2.10%, Lake 2.65%), $275K median, Senior Homestead $18K, and uniquely Cook County Senior Assessment Freeze.
Educational tool — not financial advice. SavingsClub is not a licensed financial advisor or mortgage lender. Rates and prices shown are statewide or county averages; your actual loan terms depend on your credit, lender, and property.
Last updated June 2026
$5,720
Annual property tax on a median Illinois home IL has the 2nd highest effective property tax rate in the US, behind only New Jersey.
Source: Tax Foundation (effective property tax data)
IL Mortgage Rate
6.50%
30-year fixed average
Median Home Price
$275K
Below national avg
Property Tax Rate
2.08%
2nd highest in US
State Income Tax
4.95%
Flat — no retirement tax
Calculate your Illinois payment
Understanding mortgages in Illinois
Illinois offers some of the most affordable home prices among major US states — but pairs them with the 2nd highest property tax rate in the country (2.08%, behind only New Jersey). For Illinois homebuyers, property tax often becomes the largest single line item in monthly housing costs, sometimes exceeding the principal and interest portion of the mortgage payment. Understanding this tradeoff is critical before buying anywhere in the state.
The current 30 year fixed mortgage rate in Illinois averages approximately 6.50%, almost identical to the national average. Chicago has a competitive lending market with major banks like Chase, BMO Harris, US Bank, and many regional credit unions. Downstate Illinois often sees competitive rates from local community banks. Your real after tax housing cost depends heavily on how Illinois's 4.95% flat income tax affects your take home pay and the good news is IL does not tax retirement income, unlike most other Midwestern states.
Illinois property tax: the suburban reality
Illinois ranks 2nd nationally for effective property tax rates. The statewide average of 2.08% means a median $275,000 IL home costs approximately $5,720 per year, or $477 per month, in property tax alone. But the statewide number understates the suburban reality: Lake, Will, McHenry, and Kane counties all exceed 2.4%, putting them among the highest county level rates in America.
High IL property tax is structural, not seasonal driven by unfunded public pension obligations of school districts, municipalities, and county governments. Rates have grown faster than inflation for 20+ years. For most buyers, this rules out treating Illinois real estate as an appreciation investment; the math works best for owner occupants who value the location, school district, or proximity to Chicago jobs.
⚠️ Same $500,000 home, different IL counties
Cook County / Chicago city (1.85%)$9,250/year$771/month
DuPage County (2.10%)$10,500/year$875/month
Will County (2.40%)$12,000/year$1,000/month
Lake County (2.65%)$13,250/year$1,104/month
Lake vs Cook difference+$4,000/year+$333/month
The suburb-vs-city math is real: a $500K home in Cook County / Chicago city costs $9,250/year in property tax. Same home in Lake County costs $13,250/year to $4,000 more annually, every year, forever. Over a 30 year mortgage that's $120,000+ in extra property tax. Most families choose suburbs anyway because of school quality, but the financial trade off should be a conscious decision. Use our Budget Planner to model the full picture for your income.
Illinois exemptions: Cook County stacks more than most
Illinois offers a General Homestead Exemption available statewide for primary residences. Cook County layers additional exemptions on top particularly the Senior Citizen Assessment Freeze, which uniquely caps property tax growth for qualifying seniors.
🏠 Illinois Property Tax Exemptions
General Homestead Exemption $10,000 statewide. Reduces equalized assessed value (EAV) by $10,000 for primary residences in Cook County, slightly less in other counties ($6,000 typical). Saves approximately $200/year modest but the baseline for stacking other exemptions.
Senior Citizen Homestead additional $8,000 (Cook). Stacks on top of General Homestead for homeowners 65+. Total Cook County senior reduction: $18,000 in EAV. Saves approximately $370/year additional.
Senior Citizen Assessment Freeze caps EAV for low income seniors. Cook County's most powerful exemption. Locks in your equalized assessed value at the year you qualify, so future assessment increases do NOT raise your tax. Available for ages 65+ with income under approximately $65K. For a $400K home with values appreciating 4%/year, this freeze can save $1,500–$3,000+ annually as years pass. Must reapply every year.
Returning Veterans / Disabled Veterans — varies. Cook County offers $5,000 reduction for veterans returning from active duty, plus graduated reductions for disability ratings (up to FULL exemption for 70%+ rated). Apply through the Cook County Assessor.
The Illinois retirement income advantage
The under-appreciated upside of Illinois: the state does NOT tax retirement income. Unlike Pennsylvania, Iowa, or most Northeastern states, Illinois exempts 401(k) distributions, IRA withdrawals, pension income, and Social Security from the 4.95% flat income tax. For retirees with $80K+ in retirement income, this can save $4,000+ per year vs neighboring states like Wisconsin (which taxes most retirement income at 5.3%) or Iowa. Combined with the Senior Assessment Freeze, IL can become surprisingly competitive for retirees even with high property tax. Use our retirement calculator to model your specific situation.
Median home prices across Illinois
IL's median home price of $275,000 is well below the national median. Chicago city is moderately priced; the North Shore (Evanston, Wilmette, Glenview) and Naperville Hinsdale corridor are premium. Downstate cities (Rockford, Peoria, Springfield, Champaign) are some of the most affordable in the country. Use our Down Payment Saver to plan how long until you can afford your target Illinois city.
Median home prices in top Illinois cities
Naperville$525,000
Chicago$345,000
Aurora$295,000
Joliet$265,000
Champaign$215,000
Springfield$165,000
Rockford$155,000
Peoria$135,000
Illinois first-time homebuyer programs
The Illinois Housing Development Authority (IHDA) offers several down payment assistance programs. Income and purchase price limits vary by county. The student loan repayment angle in SmartBuy is uniquely Illinois.
IHDA Access Forgivable
Up to $6,000 in forgivable down payment and closing cost assistance. The loan is forgiven over 10 years if you stay in the home. Combines with IHDA's 30 year fixed rate mortgage program.
IHDA Access Repayable
Up to 10% of the purchase price (capped at $10,000) as a 0% interest, deferred payment second mortgage. Repaid only when you sell, refinance, or pay off the first mortgage. Higher assistance than forgivable, but you owe it back eventually.
IHDA Access Deferred
Up to 10% (capped at $10,000) as a deferred 0% interest loan with no monthly payments. Due in full when you sell, refinance, or pay off the mortgage. Similar to Repayable but with simpler terms.
SmartBuy Student Loan Repayment
The uniquely-Illinois program: state pays off up to 15% of your student loan balance (capped at $40,000) at closing IF you commit to keep the loan-paid-off home as your primary residence. Combined with down payment assistance, this can make IL homeownership viable for buyers carrying significant student debt.
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SavingsClub Tips for Illinois Buyers
Three IL-specific things most out-of-state buyers don't know
1
Appeal your property tax assessment every year Cook County alone processes ~500,000 appeals annually and most filers win some reduction. Illinois has the most active property tax appeals culture in the country. Cook County offers free online appeals through the Assessor's office. Suburban counties have similar processes through the Board of Review. Average appeal reduction is 5–15%, which on a median IL home saves $300–$850/year. You can DIY with comparable assessment data, or use services like Kensington Research that take 30–50% of savings as their fee. The filing window is short (usually 30 days after your reassessment notice arrives) don't miss it.
2
In Cook County, get the Senior Assessment Freeze if you're 65+ and earn under $65K. It can save thousands per year forever. The Senior Citizen Assessment Freeze locks in your equalized assessed value at the year you qualify so future assessment increases don't raise your property tax. Income limit is approximately $65,000 for 2026. Separate from (and stacked on top of) the standard Senior Homestead Exemption. For a $400K home where values appreciate 4%/year, this freeze can save $1,500–$3,000+ annually as years pass. You must reapply every year, but it's worth the paperwork.
3
Run the suburb-vs-Chicago math before assuming the suburbs are the obvious choice. Lake County property tax is $4,000+/year more than Chicago city on the same home. Chicago city has 1.85% effective property tax (lower than nearly all suburbs). North Shore suburbs (Evanston, Glenview, Wilmette) hit 2.3–2.5%. Lake County reaches 2.65%. On a $500K home, the difference between Chicago city and Lake County is $4,000/year enough to fund private school for one child, or pay down your mortgage 30% faster. Many families pick suburbs anyway because public school quality justifies the cost, but the financial trade off should be a conscious choice. Use our Budget Planner to model the full picture.
Frequently Asked Questions
What is the average mortgage rate in Illinois in 2026?
As of June 2026, Illinois 30 year fixed mortgage rates average approximately 6.50%, very close to the national average. Chicago's competitive lending market with Chase, BMO Harris, US Bank, and many regional lenders keeps rates close to national averages. Borrowers with credit scores above 740 typically see rates 0.25–0.5% below the average.
Why are Illinois property taxes so high?
Illinois has massive unfunded pension liabilities for state and local government workers (teachers, police, fire). Property taxes fund these obligations along with schools and local services. Rates have grown faster than inflation for 20+ years. Lake, Will, McHenry, and Kane counties have rates above 2.4% among the highest county level rates in America. The structural nature of the problem means rates are likely to continue rising.
Should I buy in Chicago city or the suburbs?
Chicago city has lower property tax rates (1.85%) than nearly all suburbs (2.1–2.65%) but higher home prices in many neighborhoods and varying school quality. North Shore suburbs (Evanston, Glenview, Wilmette) have excellent schools but property tax often $15,000–$25,000/year on a $700K home. Naperville and Hinsdale offer schools/safety balance most families seek but at premium prices. Use our paycheck calculator to see your real after tax income before making this decision.
Does Illinois tax retirement income?
No and this is the under appreciated Illinois advantage. Illinois does NOT tax 401(k) distributions, IRA withdrawals, pension income, or Social Security at the state level. Unlike Pennsylvania, Iowa, or Wisconsin, Illinois fully exempts retirement income from the 4.95% flat tax. For retirees with $80K+ in retirement income, this can save $4,000+ per year vs neighboring states.
What is the Cook County Senior Assessment Freeze?
The Senior Citizen Assessment Freeze locks in your equalized assessed value (EAV) at the year you qualify. Available for homeowners 65+ with income under approximately $65,000 (2026 limit). As Cook County reassesses homes every 3 years and values rise over time, this freeze becomes increasingly valuable. For a $400K home appreciating 4%/year, the freeze can save $1,500–$3,000+ annually after a few years. Must reapply every year. Stacks on top of the standard Senior Homestead Exemption.
Are Illinois homes still a good investment?
Mixed. Illinois has lost population for 10 straight years (the only large state with that record), which limits long term appreciation. Home values grow approximately 2–3% per year well below national average of 4–5%. For owner occupants in good school districts with stable jobs, IL homes can still be a reasonable buy. For investors hoping for appreciation, the math is much weaker than Texas, Florida, or Georgia. Use our net worth calculator to track equity over time.
The calculator above is pre-filled with Illinois state defaults and includes county specific property tax, General Homestead, Senior 65+ exemption, and Senior Assessment Freeze options. For amortization schedules, extra payment scenarios, and side-by-side rate comparisons, use the main calculator.