NASSAU COUNTY PROPERTY TAX CALENDAR
Upcoming Dates
Authorization season opens
Sep 1, 2026Homeowners can begin authorizing The Tax Relief Pro to file 2028/29 tax grievances.
School Tax bills issued
Oct 1, 20262026/27 first-half School Tax bills are issued by Nassau County.
School Tax payment due
Nov 10, 20262026/27 first-half School Tax payment is due to the Receiver of Taxes. Payments after this date are subject to penalties.
Tentative assessments set
Jan 1, 2027Nassau County sets the 2028/29 tentative assessed values, and 2027 first-half General Tax bills are issued.
Grievance filing period opens
Jan 2, 2027The period to grieve your 2028/29 Nassau County assessment opens.
Exemption filing deadline
Jan 4, 2027Deadline to file for Nassau County property tax exemptions.
General Tax payment due
Feb 10, 20272027 first-half General Tax payment is due to the Receiver of Taxes. Payments after this date are subject to penalties.
Nassau grievance deadline
Mar 1, 2027Deadline to file a 2028/29 Nassau County tax grievance. This is the statutory deadline; Nassau County has extended it each of the past several years.
School Tax bills issued
Apr 1, 20272026/27 second-half School Tax bills are issued by Nassau County.
SCAR petition deadline
Apr 30, 2027Deadline to file a 2027/28 Small Claims Assessment Review (SCAR) petition in Nassau County.
School Tax payment due
May 10, 20272026/27 second-half School Tax payment is due to the Receiver of Taxes. Payments after this date are subject to penalties.
Recent Past Dates
General Tax payment due
Aug 10, 20262026 second-half General Tax payment is due to the Receiver of Taxes. Payments after this date are subject to penalties.
General Tax bills issued
Jul 1, 20262026 second-half General Tax bills are issued by Nassau County.
School Tax payment due
May 10, 20262025/26 second-half School Tax payment is due to the Receiver of Taxes. Payments after this date are subject to penalties.
SCAR petition deadline
Apr 30, 2026Deadline to file a 2026/27 Small Claims Assessment Review (SCAR) petition in Nassau County.
School Tax bills issued
Apr 1, 20262025/26 second-half School Tax bills are issued by Nassau County.
Nassau grievance deadline
Mar 1, 2026Deadline to file a 2027/28 Nassau County tax grievance. This is the statutory deadline; Nassau County has extended it each of the past several years.
General Tax payment due
Feb 10, 20262026 first-half General Tax payment is due to the Receiver of Taxes. Payments after this date are subject to penalties.
Exemption filing deadline
Jan 4, 2026Deadline to file for Nassau County property tax exemptions.
Grievance filing period opens
Jan 2, 2026The period to grieve your 2027/28 Nassau County assessment opens.
Tentative assessments set
Jan 1, 2026Nassau County sets the 2027/28 tentative assessed values, and 2026 first-half General Tax bills are issued.
School Tax payment due
Nov 10, 20252025/26 first-half School Tax payment is due to the Receiver of Taxes. Payments after this date are subject to penalties.
School Tax bills issued
Oct 1, 20252025/26 first-half School Tax bills are issued by Nassau County.
Authorization season opens
Sep 1, 2025Homeowners can begin authorizing The Tax Relief Pro to file 2027/28 tax grievances.
General Tax payment due
Aug 10, 20252025 second-half General Tax payment is due to the Receiver of Taxes. Payments after this date are subject to penalties.
General Tax bills issued
Jul 1, 20252025 second-half General Tax bills are issued by Nassau County.
Don't miss the March 2027 grievance deadline
The Tax Relief Pro handles your Nassau County grievance from start to finish, on contingency. No reduction, no fee.
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