Simply click the "Set up a Payment Installment Plan with IDOR" link. NOTE: Tax buyers applying for a refund must provide the original validated receipt and letter of deletion from the County Clerk's Office.Enter the correct amount of estimated payments you made, including any overpayment applied from a prior year return. Cook County Treasurer's Office 118 North Clark Street, Room 112 Chicago, Illinois 60602 (312) 443-5100 Check box a) if you are buying a home in a Target Area. Check box b) if you ARE NOT buying a home in a. Download the paper form for tax years 2019 through 2023. English Spanish Polish. Alternatively, your lender may have a form you must fill out. Property Taxes – Non-Escrow.