Assessment Review Calendar

Assessment Review Calendar

2026-2027 Tax Year for Nassau County

January 2, 2025

Department of Assessment publishes tentative assessment roll based on value as of this date.
January 2, 2025 to March 3, 2025ARC Filing Period to appeal 2026/27 assessment.

March 4, 2025 to March 31, 2026

ARC reviews appeals and makes determinations.
April 1, 2026Department of Assessment publishes final 2026/27 assessment roll reflecting valuation and exemption changes made by ARC.
April 30, 2026Last day to file for judicial review of assessments, including Small Claims Assessment Review.
October 1, 2026Town Receiver of Taxes mails school tax bill based on April 2026 assessment.
January 4, 2027Town or city receiver mails general tax bill based on the April 2026 assessment.


2027-2028 Tax Year for Nassau County

January 2, 2026

Department of Assessment publishes tentative assessment roll based on value as of this date.
January 2, 2026 to March 2, 2026ARC Filing Period to appeal 2027/28 assessment.

March 3, 2026 to March 31, 2027

ARC reviews appeals and makes determinations.
April 1, 2027Department of Assessment publishes final 2027/28 assessment roll reflecting valuation and exemption changes made by ARC.
April 30, 2027Last day to file for judicial review of assessments, including Small Claims Assessment Review.
October 1, 2027Town Receiver of Taxes mails school tax bill based on April 2027 assessment.
January 3, 2028Town or city receiver mails general tax bill based on the April 2027 assessment.