Knox County Property Tax Protest Guide
In Knox County, file your protest by May 15, 2026 at Knox County Appraisal District's online portal.
| Deadline | May 15, OR the 30th day after the appraisal district delivers the notice of appraised value, whichever is later. |
|---|---|
| Lien date | January 1, 2026 |
| Protest body | Appraisal Review Board (ARB) |
| Assessor / district | Knox County Appraisal District |
| Online portal | File online |
How to File a Protest in Knox County
- Gather your assessment notice — it lists your account number and any access code
- File online through Knox County Appraisal District'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 ARB hearing