The due date for the Tax Year 2009 First Installment was Tuesday, March 2, 2010.    NOTE: A law passed by the Illinois Legislature in 2009 raises the First Installment tax from 50% to 55% of the prior year's total tax.

The due date for the Tax Year 2008 Second Installment was Tuesday, December 1, 2009.

ATTENTION:  TO AVOID REFUSAL/REJECTION OF PAYMENTS AND LATE PAYMENT PENALTIES, individual payments of Cook County property taxes submitted by mail must abide by the following requirements:

• If paying in full, pay only the amount that corresponds to the U.S.P.S. postmark date that the payment is being submitted.
• Submit one original payment coupon and check per Property Index Number (PIN) per envelope.
• Be sure that your check includes:
  • Taxpayer name, mailing address, telephone number, email address (if available)
  • Property Index Number (PIN)
  • Property location, including unit number
  • Tax Year / Installment

  This information will help us contact you if there is a question about your payment.

  Sample Check:

  
  
   
• Use the return envelope(s) supplied with your tax bill(s), or submit  current Tax Year 2009  payments to:
  
  
  COOK COUNTY TREASURER
  PO BOX 4468
  CAROL STREAM, IL 60197-4468
  
   
• Be sure to write your PIN and volume number on the envelope that you submit.
• Send only the tax bill payment coupon with your check—and keep the top portion of the tax bill for your records.

Your canceled check is your receipt. Within a week, verify that your check clears with your bank. You may verify the posting of your tax payment at this website by clicking on "Payment Status" and entering the 14-digit PIN.

Under state law, only U.S.P.S. postmarks (not metered dates) may be used to determine whether payments are timely and to determine whether penalties are due.

Mailed payments may be returned if they lack adequate information for processing, such as the PIN, or the original payment coupon and/or the identity of the person(s) or entity submitting the payment.

It is recommended that companies intending to make numerous individual payments and need duplicate bills in order to do so, utilize our TPA Program.  Please see the TPA site at http://tpa.cookcountytreasurer.com/ for additional information.