State guide

Illinois mortgages: property taxes, exemptions and IHDA help

Illinois homes cost less than the US median, but property tax takes a larger share of value here than anywhere else in the country. Here is what that does to a payment, which exemptions to claim and how IHDA can help.

Last reviewed 5 min read

1.92%

Effective property tax rate in Illinois (US: 0.89%)

US Census Bureau, American Community Survey 2024 1-year · 2024 ACS 1-year

Quick answer

The median Illinois home is worth $280,700 and costs about $2,412 a month with 10% down at the 7.24% national average rate — $449 of it property tax. At 1.92% of value, Illinois’s effective property tax rate is 2.2 times the US ratio, so claiming the homestead exemptions matters. IHDA offers first-time buyers up to $15,000 in deferred down payment assistance, with a 640 minimum credit score.

Key facts

1.92%

Effective property tax rate

US Census Bureau, American Community Survey 2024 1-year · 2024 ACS 1-year

$5,399/yr

Median property tax paid

US Census Bureau, American Community Survey 2024 1-year · 2024 ACS 1-year

$280,700

Median home value in Illinois

US Census Bureau, American Community Survey 2024 1-year · 2024 ACS 1-year

$83,211/yr

Median household income

US Census Bureau, American Community Survey 2024 1-year · 2024 ACS 1-year

$6,000

General homestead exemption (EAV, most counties)

Illinois Department of Revenue: Property tax relief · Oct 29, 2026

$15,000

IHDA deferred assistance, up to

IHDA Mortgage: Homebuyer programs · Oct 29, 2026

0.1%

State transfer tax

Illinois Department of Revenue · Oct 28, 2026

Illinois property taxes by the numbers

The Census Bureau’s ratio of median taxes paid to median home value puts Illinois at 1.92%, the highest of the 50 states and DC, against 0.89% nationally. The median Illinois homeowner pays $5,399 a year, even though the median home is worth less than the national median.

On a home at the state’s median value, that ratio means about $5,389 a year, or $449 a month. The same home taxed at the US ratio would owe $2,498 — a difference of $2,891 a year. Bills are set locally: counties, townships, school districts, municipalities and special districts each levy on the equalized assessed value (EAV), so rates vary sharply even within one county. Ask for the last two tax bills on any home you consider, because the current owner’s exemptions are built into them.

How property tax shrinks an Illinois budget

Median Illinois home ($280,700), 10% down, 30-year fixed at 7.24%

Part of the paymentMonthly
Principal and interest on $252,630$1,722
Property tax at 1.92% a year$449
Homeowners insurance at $4.90 per $1,000 (Freddie Mac national average)$115
PMI (midpoint of Freddie Mac’s range)$126
Total$2,412

Now work backward from income. Illinois’s median household income of $83,211 is above the US figure, and Freddie Mac’s guideline of keeping housing under 30% of gross income gives $2,080 a month. At Illinois’s tax ratio that budget supports about $242,000 with 10% down — $38,700 below the median home value. At the national ratio, the same budget would stretch to $269,000. The higher tax costs a median-income buyer about $27,000 of buying power. Buying the median home on these terms takes an income of roughly $96,500.

The affordability calculator shows the effect for your own income, and the payment calculator lets you enter the actual tax bill of a home you are considering.

Illinois homestead exemptions you need to claim

Illinois exemptions reduce the EAV your tax rate is applied to, so their value depends on your local rate. The main ones for buyers:

ExemptionReduction in EAVWho qualifies
General Homestead ExemptionUp to $6,000 in most counties; up to $10,000 in Cook County (more in the counties next to Cook)Owner-occupied principal residence
Senior Citizens Homestead ExemptionUp to $5,000 outside Cook and its neighbors (more inside)Owners 65 or older
Low-income Senior Citizens Assessment FreezeFreezes the EAVOwners 65 or older under the income limit

At an example combined rate of 7% of EAV, the $6,000 general exemption saves $420 a year and Cook County’s $10,000 saves $700. The Illinois Department of Revenue also lists exemptions for veterans with disabilities, people with disabilities and homes rebuilt after a natural disaster. Apply through your county assessor’s office after you close, and check the first bill to confirm they were applied.

IHDA down payment assistance

The Illinois Housing Development Authority offers several down payment assistance options with its first mortgages through participating lenders. All of them require a 640 minimum credit score and homebuyer education, and income and price limits vary by county.

OptionAssistanceHow it is repaid
First-time buyer deferred6% of the price, up to $15,000No monthly payment; due when you sell or refinance
Opening Doors$9,000Forgiven monthly over 5 years; open to some repeat buyers
ForgivableUp to $6,000Forgiven after 10 years unless you sell or refinance first
DeferredUp to $7,500No monthly payment; due when you sell or refinance
RepayableUp to $10,0000% interest, monthly payments over 10 years

On the median $280,700 home, 6% works out to $16,842, above the $15,000 cap, so the assistance tops out at $15,000 — enough to cover the 3.5% minimum down payment on an FHA loan ($9,825) with the rest going to closing costs. IHDA notes that funding can change at any time and is not guaranteed until a lender reserves it. Compare these with grants and tax credits in the first-time buyer programs guide.

Transfer taxes: state, county and city

Illinois charges a state real estate transfer tax of 0.1% of the price — about $281 on the median home. Counties can add their own transfer tax, and home-rule municipalities can add more on top, so the total depends on the address — Chicago, for one, adds its own. Who pays each piece depends on the ordinance and your contract. Together with lender, title and recording costs, closing costs usually fall in the CFPB’s 2%–5% range — $5,614–$14,035 on the median home. The closing cost estimator starts from the state tax.

Housing age, and Chicago next to the state

Illinois, the City of Chicago and the US (Census ACS 2024 1-year)
IllinoisChicagoUnited States
Median home value$280,700$341,200$360,600
Effective property tax rate1.92%1.51%0.89%
Median gross rent$1,322/mo$1,486/mo$1,487/mo
Median year built197119541981
Homes lived in by their owners67.6%46.5%65.3%

Illinois has the 7th-oldest housing in the country by median build year, so budget for inspections of roofs, wiring, plumbing and basements. In Chicago the median value is above the state median, the effective tax rate is lower than the state ratio, and most Chicago households rent. The Chicago market guide covers the city’s transfer tax and local programs.

Frequently asked questions

Does Illinois have the highest property taxes in the US?

By the Census ratio of median taxes paid to median home value, Illinois ranks first among the 50 states and DC at 1.92%, against 0.89% nationally. The median homeowner paid $5,399 a year.

What is the homestead exemption in Illinois?

The General Homestead Exemption reduces a principal residence’s equalized assessed value by up to $6,000 in most counties and up to $10,000 in Cook County. Owners 65 and older can add the Senior Citizens Homestead Exemption.

What down payment assistance does IHDA offer?

IHDA’s options include deferred assistance of 6% of the price up to $15,000 for first-time buyers, $9,000 through Opening Doors, a forgivable option up to $6,000 and a 0% repayable option up to $10,000.

What credit score do I need for IHDA?

IHDA’s assistance programs require a minimum score of 640, using the middle of your three bureau scores, plus a homebuyer education course before closing.

How much is the transfer tax in Illinois?

The state tax is 0.1% of the price, about $281 on the median $280,700 home. Counties and home-rule cities such as Chicago can add their own.

How much income do you need to buy a home in Illinois?

Keeping the $2,412 monthly cost of the median home with 10% down under 30% of gross income takes about $96,500 a year. The median Illinois household earns $83,211.

Sources

  1. Freddie Mac Primary Mortgage Market Survey — 30-year fixed rate, national weekly average (Week of Oct 29, 2026)
  2. US Census Bureau, American Community Survey 2024 1-year — Median value of owner-occupied homes (2024 ACS 1-year)
  3. US Census Bureau, American Community Survey 2024 1-year — Median household income (2024 ACS 1-year)
  4. US Census Bureau, American Community Survey 2024 1-year — Effective property tax rate (median taxes ÷ median home value); Median real estate taxes paid by homeowners (2024 ACS 1-year)
  5. Freddie Mac Research — Average homeowners insurance premium per $1,000 of home value (2023 data)
  6. Freddie Mac My Home — Typical PMI cost, low end; Typical PMI cost, high end (Oct 28, 2026)
  7. Freddie Mac My Home — Freddie Mac guidance: housing costs below this share of gross income (Jan 22, 2026)
  8. Illinois Department of Revenue: Property tax relief — Illinois General Homestead Exemption, maximum reduction in equalized assessed value (most counties); Illinois General Homestead Exemption in Cook County, maximum reduction in equalized assessed value; Illinois Senior Citizens Homestead Exemption (65+), maximum EAV reduction outside Cook and its contiguous counties (Oct 29, 2026)
  9. IHDA Mortgage: Homebuyer programs — IHDA deferred down payment assistance for first-time buyers, up to (share of the purchase price); IHDA deferred down payment assistance for first-time buyers, up to; IHDA down payment assistance programs minimum credit score (Oct 29, 2026)
  10. CFPB — Minimum FHA down payment; Typical closing costs, low end (share of purchase price); Typical closing costs, high end (share of purchase price) (Oct 28, 2026)
  11. Illinois Department of Revenue — State real estate transfer tax (Oct 28, 2026)
  12. US Census Bureau, American Community Survey 2024 1-year — Median value of owner-occupied homes (2024 ACS 1-year)
  13. US Census Bureau, American Community Survey 2024 1-year — Effective property tax rate (median taxes ÷ median home value) (2024 ACS 1-year)
  14. US Census Bureau, American Community Survey 2024 1-year — Median value of owner-occupied homes (2024 ACS 1-year)
  15. US Census Bureau, American Community Survey 2024 1-year — Effective property tax rate (median taxes ÷ median home value) (2024 ACS 1-year)
  16. US Census Bureau, American Community Survey 2024 1-year — Median gross rent (2024 ACS 1-year)
  17. US Census Bureau, American Community Survey 2024 1-year — Median gross rent (2024 ACS 1-year)
  18. US Census Bureau, American Community Survey 2024 1-year — Median gross rent (2024 ACS 1-year)
  19. US Census Bureau, American Community Survey 2024 1-year — Median year homes were built (2024 ACS 1-year)
  20. US Census Bureau, American Community Survey 2024 1-year — Median year homes were built (2024 ACS 1-year)
  21. US Census Bureau, American Community Survey 2024 1-year — Median year homes were built (2024 ACS 1-year)
  22. US Census Bureau, American Community Survey 2024 1-year — Share of occupied homes lived in by their owners (2024 ACS 1-year)
  23. US Census Bureau, American Community Survey 2024 1-year — Share of occupied homes lived in by their owners (2024 ACS 1-year)
  24. US Census Bureau, American Community Survey 2024 1-year — Share of occupied homes lived in by their owners (2024 ACS 1-year)

Last reviewed Figures are checked against the sources above. Read our editorial policy. This page is general information, not financial advice — see the disclaimer.

On this page

  1. Quick answer
  2. Key facts
  3. Illinois property taxes by the numbers
  4. How property tax shrinks an Illinois budget
  5. Illinois homestead exemptions you need to claim
  6. IHDA down payment assistance
  7. Transfer taxes: state, county and city
  8. Housing age, and Chicago next to the state
  9. FAQ
  10. Sources

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