This is the form to update the name and address by mail or in person. You must have the form notarized if sent by mail. You must present photo identification if submitting it in person.

This is the form to apply for a refund if there was a duplicate payment or overpayment of taxes on a Property Index Number (PIN).

This is the form to submit if you would like a relative or other trusted friend to receive a duplicate notice of delinquency in the event you are not in town, or otherwise unable to respond to such an important notice.

This is the form to submit for members of the U.S. armed services who are called to active duty and are requesting a penalty waiver.

This is the form to request Cook County Treasurer's Office records pursuant to the Freedom of Information Act.