Assessment Review Calendar

2020-2021 Tax Year for Nassau County

January 2, 2019

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

March 1, 2019

Last day to appeal 2020-21 assessment published on January 2019 tentative roll.

March 2, 2019 to March 31, 2020

ARC reviews appeals and makes determinations.

January 2, 2020

Last day to file an application for a new exemption with the Department of Assessment. Eligibility for exemptions determined as of this date. Department of Assessment publishes adjusted tentative assessments reflecting new construction or expansion of improvements. Value determined as of this date for property affected by new construction, expansion or destruction of improvements, or change in exempt status.

April 1, 2020

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

April 30, 2020

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

October 1, 2020

Town Receiver of Taxes mails school tax bill based on April 2020 assessment.

January 1, 2021

Town or city receiver mails general tax bill based on the April 2020 assessment.

Dates are approximately one year earlier for 2019-20 and one year later for 2021-22.