How do I register my out-of-state business in Washington?
The steps required of an out-of-state business that intends to do business in Washington are very similar to those involved when registering a new business. Because of this, it is recommended you review the following guide, as it will walk you through the process of registering your business and obtaining the necessary state and local licenses and permits:
Steps for Starting a Business
The Department of Revenue (DOR) has also created a guide for out-of-state businesses, which you may find useful. To view this guide, go to:
Out-of-state businesses