Assessment Review Calendar

Assessment Review Calendar

2025-2026 Tax Year for Nassau County
January 2, 2024Department of Assessment publishes tentative assessment roll based on value as of this date.
March 1, 2024Last day to appeal 2025/26 assessment.
March 4, 2024 to March 31, 2025ARC reviews appeals and makes determinations.
April 1, 2025Department of Assessment publishes final 2025/26 assessment roll reflecting valuation and exemption changes made by ARC.
April 30, 2025Last day to file for judicial review of assessments, including Small Claims Assessment Review.
October 1, 2025Town Receiver of Taxes mails school tax bill based on April 2025 assessment.
January 1, 2026Town or city receiver mails general tax bill based on the April 2025 assessment.

 

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 2025/26 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 1, 2027Town or city receiver mails general tax bill based on the April 2026 assessment.