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My DOR - How to file an Excise Tax Return
Attend a free webinar to learn how to file basic excise tax returns using our online portal, My DOR. We will demonstrate how to report for three business and occupation tax classifications (retailing, wholesaling, and service and other activities), deductions, credits, and litter tax.
If you haven’t already, please watch our Business Tax Basics video, or sign up to attend a Business Tax Basics workshop in person or online before taking the My DOR – How to file an excise tax return webinar.
If you're not able to attend a webinar but would still like to learn about filing your excise tax return in My DOR, try these resources:
If you need accommodations in order to attend a workshop, please email tpseducationoutreach@dor.wa.gov or call 360-704-5683.
2026
| Date & time | Location | Registration link |
|---|---|---|
| April 10, 2026 Friday 10:00 a.m. - 11:00 a.m. |
Webinar | Register for the April 10 webinar. |
| April 13, 2026 Monday 2:00 p.m. - 3:00 p.m. |
Webinar | Register for the April 13 webinar. |
| April 14, 2026 Tuesday 10:00 a.m. - 11:00 a.m. |
Webinar | Register for the April 14 webinar. |
| April 15, 2026 Wednesday 9:00 a.m. - 10:00 a.m. |
Webinar | Register for the April 15 webinar. |
| April 23, 2026 Thursday 1:00 p.m. - 3:00 p.m. |
Combo webinar includes Business Tax Basics |
Register for the April 23 webinar. |
| May 21, 2026 Thursday 2:00 p.m. - 4:00 p.m. |
Combo webinar includes Business Tax Basics |
Register for the May 21 webinar. |
| June 25, 2026 Thursday 10:00 a.m. - 12:00 p.m. |
Combo webinar includes Business Tax Basics |
Register for the June 25 webinar. |
| 21 de julio de 2026 Martes 10:00 a.m. a 11:15 a.m. |
Seminario web en español | Regístrese para el taller del 21 de julio. |
| July 21, 2026 Tuesday 2:00 p.m. - 3:00 p.m. |
Webinar | Register for the July 21 webinar. |