Filing Deadline. The filing deadline is Monday, April 15, 2025, for calendar-year taxpayers - matching the due date for the federal Form 1040.
Fiscal-year filers must submit their returns by the 15th day of the fourth (4th) month following the close of the fiscal year. If a due date falls on a Saturday, Sunday, or legal holiday, that return is due on the following business day.
Deductions, Exclusions, and Credits
If you had two or more employers, you may have contributed more than the maximum amount(s). To claim credit on the tax return for excess withholding, complete Form NJ- 2450.