File and pay your taxes online

The Seattle business license tax is applied to the gross revenue that businesses earn. It is sometimes called the business and occupation tax (B&O tax) or gross receipts tax.

To file taxes online, use the Seattle electronic filing system (SELF). You can also use SELF to securely pay your taxes using a credit card or an electronic check (e-check).

If you have questions about filing your taxes online, please contact us.

File your taxes by phone

If you do not owe money to Seattle for a tax filing period, then you can file your taxes by phone. To file, call 206-684-8484 and follow the voice prompts. You will need your customer number and obligation number.

Before you file

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