When are property taxes due in Piatt County, Illinois?

Piatt County property taxes are due Varies (Cook Co.: March 1). A second installment is due Varies (Cook Co.: August 1). This deadline applies to all counties in Illinois.

What is the penalty for late property tax payment in Piatt County, Illinois?

The late payment penalty in Piatt County is 1.5% per month starting day after due.

How do I pay Piatt County, Illinois property taxes?

You can pay Piatt County property taxes via Online, mail, in-person.

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Piatt County Property Tax Due Date

Illinois

(217) 762-4866

2026 Property Tax Due Dates

Official Source

Installment 1

Varies (Cook Co.: March 1)

First installment (varies by county)

Installment 2

Varies (Cook Co.: August 1)

Second installment

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Penalty: 1.5% per month starting day after dueGrace period: None

Payment Methods

Online, Mail, In-Person

Piatt County Treasurer

Phone

(217) 762-4866

How to Pay

Online

Pay using credit card or e-check

Visit Website →

By Mail

Mail check payable to Piatt County Treasurer

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In Person

Visit the Treasurer's office

Visit Website →

Other Counties in Illinois

Adams Alexander Bond Boone Brown Bureau Calhoun Carroll

View all Illinois counties →

About Piatt County

Piatt County is a county in Illinois. According to the 2020 United States census, it had a population of 16,673. Its county seat is Monticello.

Source: Wikipedia — content available under CC BY-SA 4.0

Related Resources

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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.