How to pay Cook County, IL property tax
✓ Verified — Last verified October 24, 2026
Payment details from the official sources for Cook County. Check the tax year and parcel on your bill before submitting a payment.
Pay on the official siteNot tax or legal advice; confirm with your county.
Payment methods and fees
Published installment dates
Tax year 2025. Dates retain the year published by the source.
Published late-payment rule
Unpaid second-installment balances after October 1 accrue 0.75% interest per month.
Official source. Verified .
Official offices
Maria Pappas
Sources for these instructions
https://www.cookcountytreasurer.com/
Pay Online with Your Bank Account … Pay Online with Your Credit Card
Verified October 24, 2026
https://www.cookcountytreasurer.com/
Use your bank account to pay your property taxes with no fee
Verified October 24, 2026
Continue with your property
Common questions
Where can I pay Cook County property tax?
Official payment portal: https://www.cookcountytreasurer.com/. Bank account, Credit card