Curtis P. Newport, Boone County Treasurer
Welcome to the official site of the Boone County Treasurer’s Office. This is the place to find property tax information, learn about the tax collection process, pay your taxes online, view monthly financial reports, or learn more about the Treasurer’s Office.
This site is maintained and managed by Curt Newport, Boone County Treasurer. Feel free to email me with comments or suggestions for improving this site.
2023 Tax Clinic Presentation (PDF version, 45 slides)
2025 tax collection schedule:
FIRST INSTALLMENT DUE JUNE 2, 2025
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2025 mobile home tax bills were mailed on February 24, 2025 and were due May 1st. If you have not received your mobile home tax bill, please call the Treasurer’s Office at 815-544-2666.
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2024 real estate tax bills (payable 2025) were mailed on May 1, 2025. Due dates are June 2nd and September 2nd. If you are paying taxes late, please call the Treasurer’s Office for a penalty calculation.
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Personal checks and online e-checks will not be accepted after October 2nd, 2025. Cash, cashier’s check or money order will be required.
Banks accepting property tax payments
Pay by phone option – Call 815-247-4403 to pay your tax bill by phone (credit/debit card or e-check, fees apply).
Go paperless! Receive your tax bills electronically! Click here to learn more.
You can now reprint your tax bill! Click here for instructions.
Please read the back of your tax bill for important information and payment options.
For questions about assessments, exemptions and address changes, please call the Boone County Assessment Office at 815-544-2958.
For questions about tax rates or redemption of delinquent taxes, please call the Boone County Clerk’s Office at 815-544-3103.
Unpaid 2023 taxes (due 2024) were sold at tax sale on October 31, 2024. To redeem (pay) those taxes, contact the Boone County Clerk at 815-544-3103.
Duties of the County Treasurer
Surplus Property Auction Information
Tax Protest Information
The Big Myth about property taxes
Pay Your Tax Bill > online | at a bank | other options
Lookup Your Tax Bill > view your bill | subscriber inquiry
Reducing Your Tax Bill
The Treasurer’s Office is located in the Boone County Administration Campus.
