Get a business license tax certificate


Anyone doing business in Seattle must have a Seattle business license tax certificate. In addition to the helpful information on these pages, the Office of Economic Development's Grow Seattle program offers resources and assistance for starting and growing a business in Seattle.

How to apply

There are three ways to apply for a business license tax certificate:

  • Online – To apply online, click the Seattle electronic filing system (SELF) button above.
  • In person – To apply in person, visit the business licensing office on floor 42 of the Seattle Municipal Tower. You can complete a business license tax certificate application, pay the fee and in most cases immediately receive your business license tax certificate.
  • By mail – To apply by mail, download a Seattle business license tax certificate application. Then fill it out and mail it to us along with your payment.

Before you apply

These pages provide details and other helpful information about getting a Seattle business license tax certificate:

Business license tax certificate application help
The information you need to know about your business before filling out a business license tax certificate application.

Cost of a business license tax certificate
A standard business license tax certificate costs $110 per year in most cases.

License tax certificate processing timeline

How long it takes to get a copy of your license tax certificate varies. If your application meets all requirements and is approved, this is when you can expect to get a hard copy of your license tax certificate:

Submit your application:Get your license tax certificate:
In person Same day
Online 1 to 2 weeks
By mail 1 to 6 weeks


The fastest way to get your license tax certificate is to visit the Seattle Municipal Tower and apply in person. Once we process your application, we will give you an official hard copy business license tax certificate.

If you apply for a license tax certificate online or by mail, we will mail your license tax certificate to you. You cannot print your own copy.

Lost your license tax certificate?

If you lost or misplaced your business license tax certificate, contact us. We will mail you another hard copy. Or you can visit the Seattle Municipal Tower to get a copy of your business license tax certificate.