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Avalara Help Center

Does Avalara File Washington B & O Tax?


You need to know if Avalara files Washington B&OHoverTT.png tax returns.


Avalara Returns


  • Avalara calculates and remits state B&O tax based on taxable and non-taxable Washington sales listed on your liability worksheet.
  • To add a Washington state return, go to the Manage Filing Calendars page in the Admin Console.
    • The WA MultiPurpose Sales form is for non SST subscribers
    • The WA B&O Combined Excise form is for SST subscribers
    • State B&O tax will be included on each of these forms, unless you tell us otherwise
  • If your company is required to file a local B&O return, contact your Customer Account Manager (CAM) to discuss Avalara's Premium Returns Service. Or you can use an alternative solution such as filing in-house.

Next steps

For more information, learn how to use the Returns filing calendar or our Returns - frequently asked questions.