Mountain West · WY
How to file Wyoming sales tax
2026 due dates, filing frequencies, form 41, and official filing resources.
- State return: 41
- Monthly returns due: Last day of the month following the period
- Filing frequencies: Monthly, Quarterly, Annual
When is Wyoming sales tax due?
Monthly Wyoming sales tax returns are due the last day of the month following the period. Quarterly returns are due the last day of the month following the period (Jan 31 / Apr 30 / Jul 31 / Oct 31). 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.
Wyoming 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 Wyoming sales tax due dates
Rule: Last day of the month following the period.
| Period | Period ends | Return due |
|---|---|---|
| January 2026 | Jan 31, 2026 | Mar 2, 2026 (moved: 2026-02-28 falls on a Saturday) |
| February 2026 | Feb 28, 2026 | Mar 31, 2026 |
| March 2026 | Mar 31, 2026 | Apr 30, 2026 |
| April 2026 | Apr 30, 2026 | Jun 1, 2026 (moved: 2026-05-31 falls on a Sunday) |
| May 2026 | May 31, 2026 | Jun 30, 2026 |
| June 2026 | Jun 30, 2026 | Jul 31, 2026 |
| July 2026 | Jul 31, 2026 | Aug 31, 2026 |
| August 2026 | Aug 31, 2026 | Sep 30, 2026 |
| September 2026 | Sep 30, 2026 | Nov 2, 2026 (moved: 2026-10-31 falls on a Saturday) |
| October 2026 | Oct 31, 2026 | Nov 30, 2026 |
| November 2026 | Nov 30, 2026 | Dec 31, 2026 |
| December 2026 | Dec 31, 2026 | Feb 1, 2027 (moved: 2027-01-31 falls on a Sunday) |
Quarterly Wyoming sales tax due dates
Rule: Last day of the month following the period (Jan 31 / Apr 30 / Jul 31 / Oct 31).
| Period | Period ends | Return due |
|---|---|---|
| Q1 2026 | Mar 31, 2026 | Apr 30, 2026 |
| Q2 2026 | Jun 30, 2026 | Jul 31, 2026 |
| Q3 2026 | Sep 30, 2026 | Nov 2, 2026 (moved: 2026-10-31 falls on a Saturday) |
| Q4 2026 | Dec 31, 2026 | Feb 1, 2027 (moved: 2027-01-31 falls on a Sunday) |
- Quarterly/annual dates verified via a mirror of WY DOR Rules ch. 2 § 5 — re-verify at rules.wyo.gov.
Annual Wyoming sales tax due dates
Rule: January 31 following the calendar year.
| Period | Period ends | Return due |
|---|---|---|
| Calendar year 2026 | Dec 31, 2026 | Feb 1, 2027 (moved: 2027-01-31 falls on a Sunday) |
- Quarterly/annual dates verified via a mirror of WY DOR Rules ch. 2 § 5 — re-verify at rules.wyo.gov.
Wyoming filing notes
- Filing and paying by the 15th earns Wyoming's vendor-compensation credit — an optional discount date, not the deadline.
Return and form
The principal repository-tracked return is 41. A paper channel exists, but the current form version and account eligibility still require confirmation.
Tracked form version: 41-1 example last revised per instructions rev 7.10.24; example PDF system-generated (title FilingReturnForLicensedVendors_41-1)
Paper filing posture: accepted
Official Wyoming filing resources
File Wyoming sales tax from reviewed data, not spreadsheets
Prophit.ai tracks every Wyoming 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.
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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.
Wyoming sales tax filing questions
When is Wyoming sales tax due?
Monthly Wyoming sales tax returns are due the last day of the month following the period. Quarterly returns are due the last day of the month following the period (Jan 31 / Apr 30 / Jul 31 / Oct 31). 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 Wyoming?
Wyoming 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 Wyoming sales tax?
The Wyoming return tracked here is 41. The principal repository-tracked return is 41. A paper channel exists, but the current form version and account eligibility still require confirmation.
What happens if a Wyoming due date falls on a weekend or holiday?
The due date moves to the next business day. In 2026, 7 of the Wyoming due dates listed on this page are adjusted for a weekend or federal holiday; each adjusted date is marked in the calendar.
Can Wyoming sales tax be filed on paper?
Paper filing posture tracked for Wyoming: accepted. The principal repository-tracked return is 41. A paper channel exists, but the current form version and account eligibility still require confirmation.