New Jersey State Tax Guide
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New Jersey State Tax Guide
New Jersey Key deadlines (tax year 2025, return filed in 2026)
- Filing deadline: Apr 15, 2026
- Extension request deadline: Apr 15, 2026
- Extended return deadline: Oct 15, 2026 (6-month extension)
- Payment deadline: Apr 15, 2026
- Differs from federal: No
To avoid penalties, any remaining balance needed to reach that 80% threshold (or your full estimated balance) must be submitted by April 15.
If the due date for filing your return falls on a. Saturday, Sunday, or legal holiday, your return is due by the next regular working day.
October 15, 2026 (6-month extension)
Payment rules
To avoid penalties, any remaining balance needed to reach that 80% threshold (or your full estimated balance) must be submitted by April 15.
Payment options
New Jersey Refund Tracking
Do I need to file?
If you applied for a federal extension (IRS Form 4868) and your total New Jersey withholdings or estimated payments already cover at least 80% of your state tax liability, your state extension is approved automatically. If your tax withholdings do not meet the 80% threshold, or if you are not requesting a federal extension, you must explicitly file with the state. - You must submit your payment and request using New Jersey tax forms on or before April 15.
Filing methods
Online filing
Online : submit your payment and request using New Jersey tax forms
Mail filing
If you prefer to send a paper check or money order, you must use the physical voucher. • Download and complete New Jersey tax form.
