Assessment Review Calendar

At the request of Nassau County Executive Laura Curran, ARC has agreed to provide a grace period for filing a grievance until Thursday, April 30th, 2020.

2021-2022 Tax Year for Nassau County

January 2, 2020

Department of Assessment publishes tentative assessment roll based on value as of this date. 

March 2, 2020

Last day to appeal 2021-22 assessment published on January 2019 tentative roll.


March 3, 2020 to March 31, 2021

ARC reviews appeals and makes determinations.

April 1, 2021

Department of Assessment publishes final assessment roll reflecting changes made by ARC and exemption changes.

April 30, 2021

Last day to file for judicial review of assessments, including Small Claims Assessment Review.

October 1, 2021

Town Receiver of Taxes mails school tax bill based on April 2021 assessment. 

January 1, 2022

Town or city receiver mails general tax bill based on the April 2021 assessment.

Dates are approximately one year earlier for 2020-21 and one year later for 2022-23.