Nassau County Assessment Review Dates


School
 2016/17 2017/18 2018/19
 2019/20   2020/21
Town/County 2017 2018 2019
 2020  2021
Tax status date Jan. 2, 2015 Jan. 4, 2016 Jan. 2, 2017
 Jan 2, 2018  Jan 2, 2019
Tentative roll Jan. 2, 2015 Jan. 4, 2016 Jan. 2, 2017
 Jan 2, 2018  Jan 2, 2019
Grievances due Mar. 2, 2015 Mar. 1, 2016 Mar. 1, 2017
 Mar. 1, 2018  Mar. 1, 2019
Final roll Apr. 1, 2016 Apr. 1, 2017 Apr. 1, 2018
 Apr. 1, 2019  Apr. 1, 2020
Petitions due Apr. 30, 2016 Apr. 30, 2017 Apr. 30, 2018
 Apr. 30. 2019  Apr. 30, 2020
School tax bills Oct. 1, 2016 Oct. 1, 2017 Oct. 1, 2018
 Oct. 1, 2019  Oct. 1, 2020
Town tax bills Jan. 1, 2017
 Jan. 1, 2018
 Jan. 1, 2019
 Jan. 1, 2020  Jan. 1, 2020