2026 due dates, filing frequencies, form ST-50, and official filing resources.
New Jersey quarterly returns are due the 20th of the month after the quarter (ST-50; calendar quarters). When a due date lands on a weekend or federal holiday it moves to the next business day; the 2026 calendar on this page already applies that adjustment.
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Every date below comes from the state's published deadline rule (dataset 2026.07.0) and is already moved to the next business day when it lands on a weekend or federal holiday. Your account's assigned filing frequency decides which table applies.
Rule: 20th of the month after the quarter (ST-50; calendar quarters).
| Period | Period ends | Return due |
|---|---|---|
| Q1 2026 | Mar 31, 2026 | Apr 20, 2026 |
| Q2 2026 | Jun 30, 2026 | Jul 20, 2026 |
| Q3 2026 | Sep 30, 2026 | Oct 20, 2026 |
| Q4 2026 | Dec 31, 2026 | Jan 20, 2027 |
The principal repository-tracked return is ST-50. The reviewed filing posture requires electronic filing rather than a mailed paper return.
Paper filing posture: not accepted
Prophit.ai tracks every New Jersey due date above inside the return workspace, builds the period from your transaction data, and produces worksheet for portal entry that a reviewer approves before anything is submitted.
Need every state at once? Download the 2026 sales tax filing calendar (CSV + ICS, all states, weekend/holiday-adjusted).
Workflow support does not by itself establish registration, filing authority, credentials, agency acceptance, or tax advice. Confirm your assigned filing frequency with the state.
New Jersey quarterly returns are due the 20th of the month after the quarter (ST-50; calendar quarters). When a due date lands on a weekend or federal holiday it moves to the next business day; the 2026 calendar on this page already applies that adjustment.
New Jersey assigns a filing frequency to each account. The published cadences are quarterly filing; the state assigns the frequency based on tax volume and notifies the account, so confirm the assigned basis before relying on a calendar.
The New Jersey return tracked here is ST-50. The principal repository-tracked return is ST-50. The reviewed filing posture requires electronic filing rather than a mailed paper return.
The due date moves to the next business day. In 2026, 0 of the New Jersey due dates listed on this page are adjusted for a weekend or federal holiday; each adjusted date is marked in the calendar.
Paper filing posture tracked for New Jersey: not accepted. The principal repository-tracked return is ST-50. The reviewed filing posture requires electronic filing rather than a mailed paper return.
Reviewed and current as of October 26, 2026. Read the full New Jersey sales tax guide for rates, sourcing, products, exemptions, and marketplace rules.
