Butler County Property Tax Appeal Guide
In Butler County, file your appeal by July 13, 2026 at Butler County Assessor's online portal.
| Deadline | Appeal to the county Board of Equalization must be lodged with the county clerk (as secretary of the board) on or before the second Monday in July of the assessment year; the board may in its discretion extend the time for filing. In 2026 the second Monday in July is July 13, 2026. After the board acts, an appeal to the State Tax Commission must be filed by September 30 of the year of the ruling, or within 30 days after the final action of the board of equalization, whichever date later occurs. |
|---|---|
| Lien date | January 1, 2026 |
| Appeal body | County Board of Equalization (BOE) |
| Assessor / district | Butler County Assessor |
| Online portal | File online |
How to File a Appeal in Butler County
- Gather your assessment notice — it lists your account number and any access code
- File online through Butler County Assessor's portal or by mail
- State your grounds and submit evidence (comparable sales, a licensed appraisal, or photos of defects)
- Request an informal review to try to settle before a formal BOE hearing