Treasurer

PIATT COUNTY TREASURER Debbie Marshall

Welcome to the Piatt County Treasurer's Office.

The County Treasurer serves as both Treasurer and Collector for the County. The Treasurer is responsible for record keeping, depositing and investing funds for Piatt County. County Treasurer’s are more cash managers than long term investors. Our investment objectives are safety, liquidity and yield in that order. The County Treasurer also serves as Treasurer for 33 drainage districts in Piatt County.

The Collector is responsible for billing, investing and distributing property taxes collected from Real Estate and Mobile Homes. The Collector prepares and sends out over 13,500 Real Estate Tax Bills annually, and collects over $37,000,000.

The Piatt County Treasurer’s Office works for the taxpayers and the tax districts of the County. We are here to serve you. Our goal is to provide professional and courteous service to all of Piatt County.

Piatt County Real Estate Tax Bills Mailed

 Piatt County Real Estate tax bills are scheduled to be released May 15, 2026.  The first installment is due June 15, 2026 and the second installment is due September 1, 2026. 

 If you should have received your tax bill and did not receive it, please contact the Piatt County Treasurer’s office at 217-762-4866.  Failure of a taxpayer to receive a tax bill does not relieve them of their tax liability.

If your mailing address has changed, please contact the Supervisor of Assessments office (217-762-4266) with your address change.  It is the taxpayer’s responsibility to report any mailing address changes to the Supervisor of Assessments office.  Any questions on assessments or exemptions should be directed to the Supervisor of Assessments office.

Taxes may be paid at any bank in Piatt County, by mail (Piatt County Treasurer, PO Box 116, Monticello, IL  61856), in person at the Treasurer’s office (M-F 8:30 AM to 4:30 PM) in the Piatt County Courthouse, Room 101, 101 W Washington St, Monticello, IL , or by credit card or echeck online at piatt.gov and click on the link “Online Real Estate Tax Payments”.  A convenience fee is charged by the credit card company for online payments and is detailed at this link.  With all payments, other than online payments, the payment coupon attached to the bottom of the tax bill must accompany the payment.

We have added a drop box at the North door of the Piatt County Courthouse for your tax payment.  Please use an envelope to contain your coupon and payment.

Contact the Piatt County Treasurer’s office (217-762-4866) with any questions.