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.

Real estate tax bills first installment was due June 3, 2019

Second installment was due Sept. 3, 2019

Delinquent parcel publication October 3, 2019

If you need to make a late payment please call the Treasurer’s Office for a penalty amount 815-544-2666

Go paperless! Receive your tax bills electronically! Click here to learn more.

You can now reprint your tax bill! Click here for instructions.

The 2018 tax sale was held on October 25, 2018.  If you have unpaid property taxes, please contact the Boone County Clerk at 815-544-3103 for redemption information.

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, please call the Boone County Clerk’s Office 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 now located in the new Boone County Administration Campus.

All information subject to our Terms of Use.