Assessment Review Calendar

County Executive Laura Curran has extended the 
ARC 19/20 filing deadline to April 2, 2018

2019-2020 Tax Year for Nassau County

January 2, 2018

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

March 1, 2018

Last day to appeal 2019-20 assessment published on January 2018 tentative roll.

March 2, 2018 to March 29, 2019

ARC reviews appeals and makes determinations.

January 2, 2019

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, 2019

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

April 30, 2019

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

October 1, 2019

Town Receiver of Taxes mails school tax bill based on April 2019 assessment.

January 1, 2020

Town or city receiver mails general tax bill based on the April 2019 assessment.

Dates are approximately one year earlier for 2018-19 and one year later for 2020-21.