WA State Licensing: Kelso city business license

City of Kelso license

Who needs a license?

Kelso requires all businesses to be licensed with the city if they are:

  • Located within city limits, or
  • Conducting business within city limits.

If you do not know if you do business within city limits, call (360) 423-0900 before applying. If more than one business is located in a single property, you must complete a separate application for each business conducted.


Home businesses
Before a business license is issued, a business owner who intends to conduct business from a residence within the city must undergo a city of Kelso Planning/Building Department zoning review as required by Kelso Municipal Code 5.02.

How to apply


City license Fee
Kelso general business license $50
Kelso general business license - Non-resident $50
Kelso home occupation businesses $50
Kelso nonprofit business license* No fee
Other fees that may apply Fee
State tax registration No fee
Registering a trade name $5
Business License Application fee $19 (non-refundable)


Contact information

State of Washington
Business Licensing Service
PO Box 9034
Olympia, WA 98507-9034

Phone: 1-800-451-7985
Email: BLS@dor.wa.gov
Fax: 360-705-6699

Office hours

Monday through Friday
8 a.m. to 5 p.m.

Mailing information

Please remember to enclose all necessary documents and fees with your completed application. Incomplete submissions will result in a delay in your licensure.


It is important that you contact our office, in writing, with any changes in address.

Regulatory questions

City of Kelso - Finance Dept
Phone: 360-423-0900
Fax: 360-425-9807