Madison County Property Tax Grievance Guide
In Madison County, file your grievance by May 26, 2026 at Madison County Real Property Tax Services's online portal.
| Deadline | Grievance Day — in most assessing units, the fourth Tuesday in May, when the Board of Assessment Review meets to hear complaints; a complaint (Form RP-524) must be filed with the assessor or BAR on or before that date. Confirm the local date with the assessor, because some communities differ (e.g., Suffolk County is the third Tuesday in May, villages that assess often the third Tuesday in February). New York City and Nassau County do not use Grievance Day — they have separate year-round review commissions with their own March deadlines (see verification_gaps). |
|---|---|
| Lien date | March 1, 2026 |
| Grievance body | Board of Assessment Review (BAR) |
| Assessor / district | Madison County Real Property Tax Services |
| Online portal | File online |
How to File a Grieve in Madison County
- Gather your assessment notice — it lists your account number and any access code
- File online through Madison County Real Property Tax Services'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 BAR hearing