Homeowner Exemption
Who may qualify
Owners occupying the property as their principal residence.
Official source. Verified .
Cook County property tax due dates 2025
✓ Verified — Last verified
Due date passed
Second installment: (announced)
This is the latest published date on file. Confirm your account status with the county.
Not tax or legal advice; confirm with your county. Dates are shown as published by the source.
Installment timeline
- First installment
announced. Official source
- Second installment
announced. Official source
Assessment notice
Reassessment mailing dates vary by township; consult the assessment calendar.Official source. Verified .
Only announced dates are included, with a reminder seven days before. Re-download after dates change.
How to pay
Late payments and penalties
Unpaid second-installment balances after October 1 accrue 0.75% interest per month.
Official source. Verified .
Published rate: 0.75% percent per month
Assessment appeals
Typically 30 days after the reassessment notice; use the last filing date printed on the notice and the township calendar.
Official source. Verified .
Where to file
Cook County Assessor’s Office; online appeals or paper forms.
Official source. Verified .
Exemptions
Senior Exemption
Who may qualify
Homeowners age 65 or older who own and occupy their principal residence.
Official source. Verified .
Persons with Disabilities Exemption
Who may qualify
Homeowners disabled or becoming disabled during tax year 2025, subject to the application’s eligibility and documentation requirements.
Official source. Verified .
Returning Veterans Exemption
Who may qualify
Veterans returning from active duty in armed conflict, for each taxable year in which they return.
Official source. Verified .
County offices
Fritz Kaegi
assessor
Official source. Verified .
Maria Pappas
treasurer
Official source. Verified .
County notes
Credit/debit card payments incur a nonrefundable third-party convenience fee; confirm the fee before paying.
Official source. Verified .
Missing exemptions on the 2025 second-installment bill can be claimed through a Certificate of Error.
Official source. Verified .
Common questions
When is property tax due in Cook County?
First installment: April 1, 2026 (announced). Second installment: October 1, 2026 (announced).
Where can I pay Cook County property tax?
Use the official payment portal: https://www.cookcountytreasurer.com/. Bank account, Credit card
What happens if my Cook County payment is late?
Unpaid second-installment balances after October 1 accrue 0.75% interest per month.
Sources and verification
https://www.cookcountytreasurer.com/duedates.aspx
Tax Year 2025 Second Installment Property Tax Due Date: Thursday, October 1, 2026
Verified
https://www.cookcountytreasurer.com/duedates.aspx
Tax Year 2025 First Installment Property Tax Due Date: Wednesday, April 1, 2026
Verified
https://www.cookcountytreasurer.com/newsarticle.aspx?articleid=2308
After October 1, any balance due is charged 0.75% per month, as required by state law.
Verified
https://www.cookcountytreasurer.com/
Pay Online with Your Bank Account … Pay Online with Your Credit Card
Verified
https://www.cookcountytreasurer.com/
Use your bank account to pay your property taxes with no fee
Verified
https://www.cookcountytreasurer.com/payonlinewithyourcreditcard.aspx
All service charges or processing fees incurred in connection with the submission of electronic payments are nonrefundable. The user is responsible for the payment of the convenience fee associated with making a credit / debit card payment.
Verified
https://rpie.cookcountyassessor.com/exemptions
If a you are missing an exemption savings on your 2025 Second Installment Property Tax Bill, you can apply for a Certificate of Error.
Verified
https://www.cookcountyassessoril.gov/assessment-calendar-and-deadlines
This page contains a list of every township in Cook County along with the reassessment mailing dates and timeframe in which appeals may be filed.
Verified
https://rpie.cookcountyassessor.com/appeals
Typically, you have 30 days to file an appeal after receiving your reassessment notice. The last date to file an appeal for that year is printed on your notice.
Verified
https://rpie.cookcountyassessor.com/appeals
We encourage the filing of appeals online. Please read our complete guide to online appeals before filing. If you are unable to file an appeal online, you can find paper forms here.
Verified
https://rpie.cookcountyassessor.com/exemptions
Most homeowners are eligible for this exemption if they own and occupy the property as their principal place of residence.
Verified
https://rpie.cookcountyassessor.com/exemptions
Most senior homeowners are eligible for this exemption if they are 65 years of age or older and own and occupy their property as their principal place of residence.
Verified
https://rpie.cookcountyassessor.com/exemptions
Homeowners eligible for this exemption this year must be disabled or become disabled during the 2025 tax year.
Verified
https://rpie.cookcountyassessor.com/exemptions
Provides veterans returning from active duty in armed conflict with a reduction in the equalized assessed value of their property – for each taxable year in which they return.
Verified
https://www.cookcountytreasurer.com/contactusbyphone.aspx
Contact the Office of Cook County Treasurer Maria Pappas by phone at:
Verified
Estimate a bill and check your assessment
Census survey estimates, 2020–2024. These county medians describe a survey population; they do not establish your home’s correct assessment.
- Median home value
- $324,500
- Median annual taxes paid
- $6,191
- Estimated effective rate
- 1.91%
Census home values, Census taxes paid. Last verified 2026-10-24. Rate = median taxes ÷ median home value. Displayed rates are rounded; calculations use the unrounded ratio.
Appeal timing and filing
Typically 30 days after the reassessment notice; use the last filing date printed on the notice and the township calendar.
How to file: Cook County Assessor’s Office; online appeals or paper forms.
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 information and filing instructions
Appeal sources and verification
- Official source (verified 2026-10-24)
- Official source (verified 2026-10-24)
- Official source (verified 2026-10-24)
- Official source (verified 2026-10-24)
No savings are promised. Not tax or legal advice; confirm with your county. Estimate methodology and limitations.
A reminder before it’s due
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