Cook County property owners can view and pay their 2025 second installment tax bills starting today on cookcountytreasurer.com — about two weeks before the bills arrive in the mail.
The Treasurer’s Office plans to mail 1.8 million bills on or before Sept. 1. Those bills are due Oct. 1.
“If you own property in Cook County, you don’t have to wait until your tax bill arrives in the mail to see the amount due and confirm your exemptions,” County Treasurer Maria Pappas said in a statement.
Pappas encouraged online payment, which carries no fee when you transfer funds directly from a bank account and is available 24 hours a day. Online payments are secure and eliminate the risk of a check being stolen from the mail, she said.
“If you want to be proactive and pay now so you don’t have to think about it, paying online is the best way to do so,” Pappas said.
“If you’re unable to pay the full amount, you can make partial payments and lower the amount of interest charged on overdue taxes hopefully easing the financial strain a bit,” she said.
Property owners who cannot pay in full can make partial payments, which lowers the amount of interest charged on overdue taxes.
How to pay
To pay online for free, visit cookcountytreasurer.com, select “Pay Online for Free,” and enter your address or Property Index Number (PIN). Credit card payments are accepted online but carry a 2.08% convenience fee.
Taxpayers can also pay in person at nearly 400 Chase Bank locations in Illinois or more than 100 participating community banks — but must bring the physical bill or a copy. The Treasurer’s Office at 118 N. Clark St., Room 112, in downtown Chicago also accepts payments.
Payments can be mailed to the Cook County Treasurer’s Office with the taxpayer’s PIN, contact information, and property information included. A canceled check serves as the receipt.