Carbon County Property Tax Appeal Guide
In Carbon County, file your appeal by File a written statement of disagreement with the county assessor no later than 30 days after the date the assessment notice (assessment schedule) is mailed. Assessment schedules are mailed on or before the fourth Monday in April, so the actual deadline rolls 30 days off each county's mail date. A taxpayer who timely files is heard by the county Board of Equalization (county commissioners sitting as the board); the board notifies parties of its findings no later than the first Monday in August. at Carbon County Assessor's online portal.
| Deadline | File a written statement of disagreement with the county assessor no later than 30 days after the date the assessment notice (assessment schedule) is mailed. Assessment schedules are mailed on or before the fourth Monday in April, so the actual deadline rolls 30 days off each county's mail date. A taxpayer who timely files is heard by the county Board of Equalization (county commissioners sitting as the board); the board notifies parties of its findings no later than the first Monday in August. |
|---|---|
| Lien date | January 1, 2026 |
| Appeal body | County Board of Equalization (County BOE) |
| Assessor / district | Carbon County Assessor |
| Online portal | File online |
How to File a Appeal in Carbon County
- Gather your assessment notice — it lists your account number and any access code
- File online through Carbon 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 County BOE hearing