Every NYC property tax date that can end an appeal before it starts
Updated 2026-08-27.
Four filings, several clocks, and two exceptions that run shorter than any of the standing dates. The Tax Commission says its deadlines cannot be extended, and it means it.
The standing dates
| Filing | Deadline |
|---|---|
| Tax Commission Application for Correction, tax classes 2, 3 and 4 | March 1 |
| Tax Commission Application for Correction, tax class 1 | March 15 |
| Department of Finance Request for Review, tax class 1 | March 15 |
| Department of Finance Request for Review, all other properties | April 1 |
| Request to Update Vacant Land Description | April 1 |
| Tax Commission personal exemption appeals | May 31, published as June 1 for the 2026/27 year |
The two windows that run shorter
- A Revised Notice of Property Value dated after February 1 that increases the assessed value, or reduces or removes an exemption, gives 20 calendar days from the date of that revised notice instead of the March dates. A revision that lowers the value shortens nothing.
- A Finance decision about a personal exemption dated after May 1 gives 30 calendar days from the date on that notice, again instead of the March dates.
The trap inside the May 31 date
The personal exemption forms run to May 31, and that generosity is easy to over-read. The Tax Commission's own note: if you want it to review the assessed value as well, you must separately file the application for the value claim by the March 1 or March 15 deadline. A May filing cannot reach back and rescue a March one.
Why does the published cutoff move in some years?
March 1 and March 15 are the standing dates, and the Tax Commission publishes a working cutoff for each season. For the 2026/27 tax year it announced that applications for tax classes 2, 3 and 4 would be accepted if received by 5 PM on March 2, 2026, and tax class 1 applications if received by 5 PM on March 16, 2026. The reason is the calendar: March 1, March 15 and May 31 all fell on a Sunday in 2026. The same shift reached the exemption date, and the Tax Commission's own personal exemption form sets the 2026/27 appeal date as received by June 1, 2026. Read the published cutoff each season rather than assuming it repeats.
The filing each date belongs to is on the Tax Commission page and the Request for Review page. If a date has already passed, the call is still worth making, because which one you missed decides what is left: 212-343-1111.