Disaster Relief: Revenue will work with businesses that cannot file or pay their taxes on time due to a natural disaster. Learn more about disaster relief.

Commercial Telephone Solicitor

Any business making unsolicited commercial telephone calls and selling goods or products during the call is required to have a Commercial Telephone Solicitor endorsement.

It is also required for those who offer free prizes by mail and invite a telephone response.

Exceptions from coverage include, but are not limited to:

  • Those soliciting for educational, political, or charitable purposes.
  • Those who sell to businesses who either resell the product or use it for manufacturing.

Licensing requirements and additional supporting documents


State endorsement


Commercial Telephone Solicitor


Additional fees

State tax registration $0
Registering your business name as a trade name $5
Business License Application fee Variable fee

How to apply


Add a state endorsement to your business

Apply for a new business license

Online assistance
Setting up your business licensing and tax account
How to add a state endorsement

By mail

Complete the licensing requirements above and mail to:

Business Licensing Service
P.O. Box 9034
Olympia, WA 98507-9034