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.
NOTICE: Effective Aug. 1, 2015, penalty rates for late tax payments are increasing. Click here for more information.