Wyoming Sales Tax Due Dates — 2026
Exact Wyoming sales tax filing deadlines for 2026 and 2027 — every period, already adjusted for weekends and holidays. Find your filing frequency, see the dates, and add them to your calendar.
Wyoming Monthly Sales Tax Due Dates — 2026
| Filing period | Due date |
|---|---|
| December 2025 | Mon, February 2, 2026moved off weekend/holiday |
| January 2026 | Mon, March 2, 2026moved off weekend/holiday |
| February 2026 | Tue, March 31, 2026 |
| March 2026 | Thu, April 30, 2026 |
| April 2026 | Mon, June 1, 2026moved off weekend/holiday |
| May 2026 | Tue, June 30, 2026 |
| June 2026 | Fri, July 31, 2026 |
| July 2026 | Mon, August 31, 2026 |
| August 2026 | Wed, September 30, 2026 |
| September 2026 | Mon, November 2, 2026moved off weekend/holiday |
| October 2026 | Mon, November 30, 2026 |
| November 2026 | Thu, December 31, 2026 |
Dates are adjusted for weekends and U.S. federal holidays. Some states observe additional state holidays — always confirm the exact date with the Wyoming Department of Revenue.
Wyoming sales tax filing rules
Good to know
Returns are due the last day of the month following the period; file by the 15th to earn the vendor credit.
Timely-filing discount
Vendor compensation credit for filing/paying early (by the 15th), even though the return is due the last day of the month.
Filing Wyoming sales tax late
Wyoming charges a late-filing and late-payment penalty plus interest on any unpaid tax, and most states apply a minimum penalty even on a zero return. Filing late also forfeits the timely-filing discount described above. File on time — even a return with no tax due must be filed. Confirm current penalty amounts with the Wyoming Department of Revenue.
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Frequently Asked Questions
Official sources
Last verified 2026-05-30 against state revenue references. This page is for general information, not tax advice — confirm your specific due dates with the Wyoming Department of Revenue.
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