Mid-Atlantic · NY
How to file New York sales tax
2026 due dates, filing frequencies, form ST-100, and official filing resources.
- State return: ST-100
- Monthly returns due: 20 days after the month end (Form ST-809)
- Filing frequencies: Monthly, Quarterly, Annual
When is New York sales tax due?
Monthly New York sales tax returns are due the 20 days after the month end (Form ST-809). Quarterly returns are due the 20 days after the period end. 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 York sales tax due dates for 2026
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.
Monthly New York sales tax due dates
Rule: 20 days after the month end (Form ST-809).
| Period | Period ends | Return due |
|---|---|---|
| January 2026 | Jan 31, 2026 | Feb 20, 2026 |
| February 2026 | Feb 28, 2026 | Mar 20, 2026 |
| March 2026 | Mar 31, 2026 | Apr 20, 2026 |
| April 2026 | Apr 30, 2026 | May 20, 2026 |
| May 2026 | May 31, 2026 | Jun 22, 2026 (moved: 2026-06-20 falls on a Saturday) |
| June 2026 | Jun 30, 2026 | Jul 20, 2026 |
| July 2026 | Jul 31, 2026 | Aug 20, 2026 |
| August 2026 | Aug 31, 2026 | Sep 21, 2026 (moved: 2026-09-20 falls on a Sunday) |
| September 2026 | Sep 30, 2026 | Oct 20, 2026 |
| October 2026 | Oct 31, 2026 | Nov 20, 2026 |
| November 2026 | Nov 30, 2026 | Dec 21, 2026 (moved: 2026-12-20 falls on a Sunday) |
| December 2026 | Dec 31, 2026 | Jan 20, 2027 |
Quarterly New York sales tax due dates
Rule: 20 days after the period end. This cadence is flagged for manual review against the state source before relying on it.
| 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 |
- New York sales tax quarters are Mar–May, Jun–Aug, Sep–Nov, Dec–Feb (due Jun/Sep/Dec/Mar 20) — they do NOT match the calendar quarters this system generates; verify the actual NY period before relying on this date.
Annual New York sales tax due dates
Rule: March 20 (NY annual period runs Mar 1–Feb 28/29). This cadence is flagged for manual review against the state source before relying on it.
| Period | Period ends | Return due |
|---|---|---|
| Calendar year 2026 | Dec 31, 2026 | Mar 22, 2027 (moved: 2027-03-20 falls on a Saturday) |
- New York's annual period is Mar 1–Feb 28/29, not the calendar year this system generates — verify the actual NY period.
New York filing notes
- Vendors over $500,000 annual liability must remit via PrompTax (payment due 3 business days after the 22nd each month) (info only).
Return and form
The principal repository-tracked return is ST-100. Paper eligibility is taxpayer-specific; electronic filing or a waiver may control.
Tracked form version: Revised 3/26 (1st Quarter, period March 1, 2026 – May 31, 2026; due June 22, 2026)
Paper filing posture: taxpayer specific
Official New York filing resources
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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 York sales tax filing questions
When is New York sales tax due?
Monthly New York sales tax returns are due the 20 days after the month end (Form ST-809). Quarterly returns are due the 20 days after the period end. 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.
How often do you file sales tax in New York?
New York assigns a filing frequency to each account. The published cadences are monthly, quarterly and annual filing; the state assigns the frequency based on tax volume and notifies the account, so confirm the assigned basis before relying on a calendar.
What form is used to file New York sales tax?
The New York return tracked here is ST-100. The principal repository-tracked return is ST-100. Paper eligibility is taxpayer-specific; electronic filing or a waiver may control.
What happens if a New York due date falls on a weekend or holiday?
The due date moves to the next business day. In 2026, 4 of the New York due dates listed on this page are adjusted for a weekend or federal holiday; each adjusted date is marked in the calendar.
Can New York sales tax be filed on paper?
Paper filing posture tracked for New York: taxpayer specific. The principal repository-tracked return is ST-100. Paper eligibility is taxpayer-specific; electronic filing or a waiver may control.