Departmental services

The Department of Revenue offers many services to make reporting your taxes as convenient as possible. The following list contains a sampling of the Department’s services.

Our web site offers a wide variety of information and resources for your business, including:

Telephone and one-on-one assistance

Telephone Information Center (360-705-6705) - One-on-one telephone assistance during business hours 8:00 am to 5:00 pm​


Sign up to receive tax information and updates electronically. Topics include:

  • Electronic filing
  • Excise taxes
  • Sales tax rates

To join our distribution list, visit our sign up page.

Letter rulings

To obtain a binding letter ruling write to:

Interpretations & Technical Advice
Washington State Department of Revenue
PO Box 47453
Olympia, Washington 98504-7453

** Only those letters that contain the name(s) of the party(ies) involved are legally binding.