Dallas County Property Tax Appeal Guide
In Dallas County, file your appeal by August 17, 2026 at Dallas County Assessor's online portal.
| Deadline | Apply to the County Equalization Board (in person, by petition, or by letter to the board secretary) on or before the third Monday in August. The board begins hearing appeals no later than the second Monday in August. |
|---|---|
| Lien date | January 1, 2026 |
| Appeal body | County Equalization Board (CEB) |
| Assessor / district | Dallas County Assessor |
| Online portal | File online |
How to File a Appeal in Dallas County
- Gather your assessment notice — it lists your account number and any access code
- File online through Dallas 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 CEB hearing