Washington State, Department of Revenue, Business tax 2026

1. Click ‘Get Form’ to open the Washington State, Department of Revenue, Business tax form in the editor.
2. Begin by entering your Account ID and business name in the designated fields. Ensure that you use black ink if filling out a physical copy.
3. Fill in your street address, city, state, and ZIP code accurately. If there are any address changes, note them in the provided section.
4. Indicate your tax classification and check the box if your business is closed. Provide the date of closure if applicable.
5. Complete Section I for Business and Occupation Tax by entering gross amounts and deductions for each line item as per your business activities.
6. Proceed to Section II for State Sales and Use Tax. Fill in the gross amounts and deductions as required.
7. Review all entries for accuracy before signing at the bottom of the form. Ensure you include your phone number and print name.

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