Illinois property tax
Tax year 2025 · updated 2026-09-20 · Source: Illinois Department of Revenue, Census ACS 2023 5-year
The median effective property tax rate in Illinois is 2.07%, above the national median of 0.99%. The median homeowner pays $5,050 a year on a home worth $244,000. On a $300,000 home that is about $6,210 before exemptions.
- Effective rate
- 2.07%
- Median annual bill
- $5,050
- Median home value
- $244,000
- Rank (highest = 1)
- 2of 50
Counties in Illinois
| County | Effective rate | Median bill | Median home value | Population |
|---|---|---|---|---|
| Cook County | 1.93% | $5,330 | $276,000 | 5,110,000 |
| DuPage County | 2.02% | $7,000 | $347,000 | 930,000 |
How Illinois assesses property
33.33% of market value statewide; Cook County uses 10% for residential, then a state equalisation factor is applied.
Homestead and other exemptions
General homestead exemption of $10,000 in Cook County and $6,000 elsewhere off equalised assessed value; senior, senior freeze and disabled exemptions add to it.
Due dates
Two installments, typically due June 1 and September 1 (Cook County: March 1 and August 1, often delayed).
Appeals
30 days from the township assessment notice; a second appeal to the county Board of Review follows.
Second-highest effective rate in the country. Bills are paid one year in arrears.
Source: Illinois Department of Revenue, Census ACS 2023 5-year.
Frequently asked questions
What is the property tax rate in Illinois?
The median effective property tax rate in Illinois is 2.07% of home value, above the national median of 0.99%. On a $300,000 home that is about $6,210 per year, before exemptions. Rates vary by county and school district.
When are property taxes due in Illinois?
Two installments, typically due June 1 and September 1 (Cook County: March 1 and August 1, often delayed).
Does Illinois have a homestead exemption?
General homestead exemption of $10,000 in Cook County and $6,000 elsewhere off equalised assessed value; senior, senior freeze and disabled exemptions add to it.
How do I appeal my property tax assessment in Illinois?
30 days from the township assessment notice; a second appeal to the county Board of Review follows. Appeals go to the county assessor or appraisal review board first; each county page on this site lists the local deadline and the assessor's contact.