To pay your B&O and Excise (sales) tax in Washington, start here dor.wa.gov.
This illustration shows a quick overview of the steps required to set up your account to file your state taxes. You'll find more detailed instructions, along with a video at the WA Dept. of Revenue's Setup page.
If you are already a client, and would like us to file your WA Dept of Revenue Taxes for you, please follow the instructions on the The WA Department of Revenue's Manage Access page.