Before you file

Depending on your situation, filing your Seattle taxes may be relatively simple or fairly complex. These webpages help you learn more about the Seattle business license tax.

Business license tax overview
Overview of the Seattle business license tax that explains who pays it and how it works.

Tax due dates
Learn when tax is due and the penalty for paying late.

Tax rates and classifications
Descriptions of the business types in each classification and corresponding tax rates.

Request a hard copy tax form
If you choose to file taxes on paper, we will send you a blank tax form to fill out.

NOTICES:

  • Effective Jan. 1, 2016, the square footage business tax is no longer in effect. However, it will still be levied for all periods between Jan.1, 2008 through Dec. 31, 2015. Go to the Square Footage Business Tax page for more information.
  • Effective Jan. 1, 2016, the City of Seattle will begin imposing a firearms and ammunition tax. See the Firearms and Ammunition Tax page for more information.