General Homestead Exemption (GHE)
Who may qualify
Principal-dwelling owner occupants, including qualifying legal/equitable/leasehold interests liable for property taxes.
Official source. Verified .
St. Clair County property tax due dates 2026
Next date not yet announced
Check the official source for your next due date. Published past dates remain in the installment timeline.
Verified — Last verified . View source
Penalty cutoff
Not yet verified.
Confirm the last penalty-free payment day with your county.
Not tax or legal advice; confirm with your county. Dates are shown as published by the source.
Property tax in St. Clair County: county, state and US
Census ACS 2020–2024 estimates for owner-occupied homes. The median annual tax paid is a historical survey estimate, not a quote for this year’s bill.
| Area | Median annual tax paid | Median home value | Effective rate estimate |
|---|---|---|---|
| St. Clair County | $3,665 | $180,300 | 2.03% |
| Illinois | $5,298 | $263,300 | 2.01% |
| United States | $3,119 | $332,700 | 0.94% |
St. Clair County’s effective-rate point estimate is 0.02 percentage points above Illinois’s and 1.10 percentage points above the US estimate.
Effective rate = median annual real estate taxes paid (B25103) ÷ median owner-occupied home value (B25077). State and US figures use their own Census medians, not averages of counties. These ratios are not statutory rates or medians of individual tax rates. Differences are not tests of statistical significance. Bounded or missing estimates stay unavailable.
Census sources, quotations and sampling uncertainty
St. Clair County
Annual taxes: $3,665 (90% margin of error: ±$90). Census table B25103_001E. Verified October 24, 2026.
0500000US17163|3665|90|4189|119|2871|151
Home value: $180,300 (90% margin of error: ±$5,056). Census table B25077_001E. Verified October 24, 2026.
0500000US17163|180300|5056
Illinois
Annual taxes: $5,298 (90% margin of error: ±$22). Census table B25103_001E. Verified October 24, 2026.
0400000US17|5298|22|5833|28|4463|30
Home value: $263,300 (90% margin of error: ±$797). Census table B25077_001E. Verified October 24, 2026.
0400000US17|263300|797
United States
Annual taxes: $3,119 (90% margin of error: ±$4). Census table B25103_001E. Verified October 24, 2026.
0100000US|3119|4|3489|4|2576|4
Home value: $332,700 (90% margin of error: ±$236). Census table B25077_001E. Verified October 24, 2026.
0100000US|332700|236
Installment timeline
2026Due dates and filing windows, in one view.
Today:
Assessment notice: not yet verified.
Appeal window: not yet verified.
Download announced dates (.ics)Only announced dates are included, with a reminder seven days before. Re-download after dates change.
How to pay
Fees
The online processor lists credit-card fees of 2.5% or a $2 minimum and an ACH electronic-check fee of $1.50. Fees are retained by the processor.
Official source. Verified .
Late payments and penalties
35 ILCS 200/21-15: monthly interest is 1.5% in counties below 3 million population; in counties of 3 million or more, 0.75% for tax years 2023 onward.
Official source. Statutory. Verified .
A numerical example is unavailable without a verified single percentage and unit. Use the published rule or ask the county for a payoff amount.
Assessment appeals
Where to file
St. Clair County Board of Review, St. Clair County Building, 10 Public Square, Belleville, IL 62220
Official source. Verified .
Exemptions
Homestead Exemption for Persons with Disabilities
Who may qualify
Primary residence occupied by a disabled person liable for taxes who has a recorded ownership or qualifying written legal/equitable interest.
Official source. Verified .
Senior Citizens Homestead Exemption
Who may qualify
Resident aged 65+, liable for the real-estate tax, with qualifying ownership or legal/equitable interest; qualifying single-family land leases are included.
Official source. Verified .
Low-income Senior Citizens Assessment Freeze Homestead Exemption
Who may qualify
Age 65+; household income at most $75,000 for tax year 2026, $77,000 for 2027, $79,000 for 2028 onward; other qualifications apply.
Official source. Verified .
Standard Homestead Exemption for Veterans with Disabilities
Who may qualify
Qualified disabled veteran occupying an owned or leased single-family primary residence and liable for its property tax; excludes commercial-use portions. Disability-rating conditions determine the exemption amount.
Official source. Verified .
County offices
St. Clair County Treasurer’s Office
treasurer
Official source. Verified .
St. Clair County Assessor’s Office
assessor
Official source. Verified .
County notes
The collection calendar labels its dates tentative; confirm with the Treasurer before relying on tax-sale-related deadlines.
Official source. Verified .
The online payment system closes for the current tax season on October 30, 2026 at 3:00 PM Central.
Official source. Verified .
Common questions
When is property tax due in St. Clair County?
First half: July 1, 2026 (announced). Second half: September 1, 2026 (announced).
Where can I pay St. Clair County property tax?
Use the official payment portal: https://payments.municipay.com/il_stclair/search. Online credit card, Online electronic check
What is the late-payment penalty for St. Clair County property tax?
35 ILCS 200/21-15: monthly interest is 1.5% in counties below 3 million population; in counties of 3 million or more, 0.75% for tax years 2023 onward.
Does St. Clair County charge a fee to pay property tax online?
The online processor lists credit-card fees of 2.5% or a $2 minimum and an ACH electronic-check fee of $1.50. Fees are retained by the processor.
Sources and verification
https://www.stclaircountyil.gov/departments/treasurer/collection-dates
2025 Real Estate Tax Collection dates payable in 2026.
Verified
https://www.stclaircountyil.gov/departments/treasurer/tax-calculation
The Tax Due is what you owe: The first half is due on or before July, 1, 2026; the second half is due on or before September 1, 2026.
Verified
https://tax.illinois.gov/localgovernments/property/taxrelief.html
General Homestead Exemption (GHE)
Verified
https://www.ilga.gov/documents/legislation/ilcs/documents/003502000K21-15.htm
For property located in a county with fewer than 3,000,000 inhabitants, the unpaid taxes shall bear interest at the rate of 1 1/2% per month or portion thereof. For property located in a county with 3,000,000 or more inhabitants, the unpaid taxes shall bear interest at the rate of (i) 1.5% per month, or portion thereof, if the unpaid taxes are for a tax year before 2023 or (ii) 0.75% per month, or portion thereof, if the unpaid taxes are for tax year 2023 or any tax year thereafter.
Verified
https://www.stclaircountyil.gov/Departments/Treasurer
Pay Real Estate & Mobile Home Tax Bills
Verified
https://www.stclaircountyil.gov/departments/treasurer/faq
Credit Card and electronic check payments may be made on-line.
Verified
https://payments.municipay.com/il_stclair/page/terms
Visa, MasterCard, Discover, American Express -Convenience Fee =2.5% or $2.00 minimum ACH (Electronic Check) Convenience Fee =$1.50. Fees are not collected by the County Treasurer; the processor retains the fees.
Verified
https://www.stclaircountyil.gov/departments/treasurer/tax-appeals
To file an appeal, you may contact the St. Clair County Board of Review: St. Clair County Board of Review St. Clair County Building 10 Public Square Belleville, IL 62220
Verified
https://www.stclaircountyil.gov/departments/treasurer/tax-sale
For additional information, contact the Treasurer's Office at (618) 825-2707.
Verified
Plan your next step
Tools for your county
Open county toolsTools for St. Clair County, IL
Estimated bill
Starts at the county’s Census median: $180,300. Change it to your best estimate.
Estimated annual bill$3,665
Your home value × the county’s Census effective rate; your actual bill may differ.
Not tax or legal advice; confirm with your county.
Census survey, 2020–2024. Rate = median annual taxes ÷ median home value.
Census taxes paid source
0500000US17163|3665|90|4189|119|2871|151
Official source. Last verified 2026-10-24.
Late payment penalty
Not available yet
A complete date-based penalty rule and its matching cutoff have not been verified here.
Not tax or legal advice; confirm with your county.
Check the official information
Source and verification
For property located in a county with fewer than 3,000,000 inhabitants, the unpaid taxes shall bear interest at the rate of 1 1/2% per month or portion thereof. For property located in a county with 3,000,000 or more inhabitants, the unpaid taxes shall bear interest at the rate of (i) 1.5% per month, or portion thereof, if the unpaid taxes are for a tax year before 2023 or (ii) 0.75% per month, or portion thereof, if the unpaid taxes are for tax year 2023 or any tax year thereafter.
Official source. Last verified 2026-10-24.
Exemption savings
Check the exemptions that may fit. A “Yes” does not confirm eligibility; your assessor makes that decision.
Homestead Exemption for Persons with Disabilities
Primary residence occupied by a disabled person liable for taxes who has a recorded ownership or qualifying written legal/equitable interest.
Use the remaining amount after other exemptions.
Copy the applicable rate from your bill. The Census effective rate is not the rate to use here.
Annual reduction of equalized assessed value (EAV) for the Homestead Exemption for Persons with Disabilities. Use the tax rate applied to EAV.
Possible annual savingsAnswer above
We’ll show the next step for this exemption.
Not tax or legal advice; confirm with your county.
Official eligibility and application
Eligibility source
This exemption is an annual $2,000 reduction in the EAV of the primary residence that is occupied by a person with a disability who is liable for the payment of property taxes. The person with a disability must be an owner of record of the property or have a legal or equitable interest in the property as evidenced by a written instrument.
Official source. Last verified 2026-10-24.
Savings source
This exemption is an annual $2,000 reduction in the EAV of the primary residence that is occupied by a person with a disability who is liable for the payment of property taxes. The person with a disability must be an owner of record of the property or have a legal or equitable interest in the property as evidenced by a written instrument.
Official source. Last verified 2026-10-24.
General Homestead Exemption (GHE)
Principal-dwelling owner occupants, including qualifying legal/equitable/leasehold interests liable for property taxes.
Possible annual savingsAnswer above
We’ll show the next step for this exemption.
Not tax or legal advice; confirm with your county.
Official eligibility and application
Eligibility source
This annual exemption is available for residential property that is occupied by its owner or owners as his or their principal dwelling place, or that is a leasehold interest on which a single family residence is situated, which is occupied as a residence by a person who has an ownership interest therein, legal or equitable or as a lessee, and on which the person is liable for the payment of property taxes.
Official source. Last verified 2026-10-24.
Senior Citizens Homestead Exemption
Resident aged 65+, liable for the real-estate tax, with qualifying ownership or legal/equitable interest; qualifying single-family land leases are included.
Possible annual savingsAnswer above
We’ll show the next step for this exemption.
Not tax or legal advice; confirm with your county.
Official eligibility and application
Eligibility source
This annual exemption is available for property that is occupied as a residence by a person 65 years of age or older who is liable for paying real estate taxes on the property and is an owner of record of the property or has a legal or equitable interest therein as evidenced by a written instrument, except for a leasehold interest, other than a leasehold interest of land on which a single family residence is located, which is occupied as a residence by a person 65 years or older who has an ownership interest therein, legal, equitable or as a lessee, and on which he or she is liable for the payment of property taxes.
Official source. Last verified 2026-10-24.
Low-income Senior Citizens Assessment Freeze Homestead Exemption
Age 65+; household income at most $75,000 for tax year 2026, $77,000 for 2027, $79,000 for 2028 onward; other qualifications apply.
Possible annual savingsAnswer above
We’ll show the next step for this exemption.
Not tax or legal advice; confirm with your county.
Official eligibility and application
Eligibility source
A person qualifies for this exemption if the person is at least 65 years old; has a total household income of: $75,000 or less for taxable year 2026 (payable in 2027), $77,000 or less for taxable year 2027 (payable in 2028), $79,000 or less for taxable year 2028 (payable in 2029) and after; and meets certain other qualifications.
Official source. Last verified 2026-10-24.
Standard Homestead Exemption for Veterans with Disabilities
Qualified disabled veteran occupying an owned or leased single-family primary residence and liable for its property tax; excludes commercial-use portions. Disability-rating conditions determine the exemption amount.
Possible annual savingsAnswer above
We’ll show the next step for this exemption.
Not tax or legal advice; confirm with your county.
Official eligibility and application
Eligibility source
Beginning in tax year 2007 and after, this exemption is an annual reduction in equalized assessed value on the primary residence occupied by a qualified veteran with a disability. This veteran with a disability must own or lease a single family residence as his or her primary residence and be liable for payment of property taxes. The portion used for commercial purposes is excluded from this exemption. The amount of the exemption depends on the percentage of the service-connected disability as certified by the United States Department of Veterans' Affairs.
Official source. Last verified 2026-10-24.
Estimates are separate. Do not add them together; eligibility, taxing units and restrictions can overlap.
Is my assessment too high?
Use market value, not assessed or taxable value.
Compared with the county medianAt the median
This compares market values only; being above the county median does not establish overassessment.
Not tax or legal advice; confirm with your county.
Census survey, 2020–2024. Rate = median annual taxes ÷ median home value.
Census taxes paid source
0500000US17163|3665|90|4189|119|2871|151
Official source. Last verified 2026-10-24.
Appeal dates and filing
County appeal deadline: Not yet announced here. Confirm the deadline on your notice with the official office.
How to file: St. Clair County Board of Review, St. Clair County Building, 10 Public Square, Belleville, IL 62220
State guidance: After county Board of Review, appeal to the State Property Tax Appeal Board or file a tax-objection complaint in circuit court.
Official appeal source. Last verified 2026-10-24.
Official appeal source. Last verified 2026-10-24.
Official appeal source. Last verified 2026-10-24.
Compare counties
Compare the same home value in up to four counties.
Starts at the county’s Census median: $180,300. Change it to your best estimate.
Estimated annual differenceAdd a place
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Not tax or legal advice; confirm with your county. How these estimates work.
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Related counties in the same Census area
St. Louis, MO-IL (Metropolitan Statistical Area). Census delineation, verified October 24, 2026.
Source membership row
41180 | St. Louis, MO-IL | Metropolitan Statistical Area | St. Clair County | Illinois | 17 | 163
Updated , from cited verification dates. Individual sources may have earlier checks.