Welcome to the Butler County, Ohio Auditor's Office

The Auditor’s Office will remain open during regular business hours, 8 a.m-4:30 p.m. We have reduced face-to-face contact with the public but have set up a document drop off zone on the third floor.

Real Estate Tax Update: The first half due date is March 18, 2021. The Treasurer placed tax bills in the mail the week of Feb. 15. To contact the Treasurer's Office or view your tax bill online, click here.

Property Reappraisal: A general appraisal is mandated by Ohio law every six years with an update at the three-year midpoint. Tax year 2020 (payable 2021) was a reappraisal year. If you do not agree with the appraised value of your property, you may file an appeal with the Board of Revision through March 31. For an application and complete instructions, please click here.

You're encouraged to take advantage of our website or phone us during regular business hours at 513-887-3154.


Butler County Auditor Roger Reynolds addresses the media on Feb. 24, 2020 to advocate for House Bill 499 and fuel quality testing. The bipartisan bill, introduced by Reps. George Lang and Brigid Kelly, would allow county auditors the authority to test fuel for octane level, water and sediment. Also pictured are Ross Twp. Trustee Tom Willsey, Reily Twp. Trustee Nick Schwab, Lang and Kelly. Although the bill never received a vote, two more fuel quality bills have been introduced during the current 134th General Assembly - HB 144 and SB 71.

While our office strives to provide the public with the most current and accurate data, the contents herein are not updated in real-time and may not reflect the most recent changes.  Butler County does not assume any liability associated with the use of misuse of this data.

Butler County Auditor
130 High Street
Hamilton, OH  45011

Map Location


Board of Commissioners

Office Hours
8:00 AM - 4:30 PM, Mon. - Fri.

Conveyance Desk
closes daily at 3:30 PM

Phone: 513-887-3154