If you are opening or operating a business in the city limits, you are required to add a City of Gig Harbor endorsement to your Washington state business license. Business is defined as any activities, occupation, pursuits, or professions with the object of gain, benefit, or advantage to the licensee or to another person or class, directly or indirectly, whether part-time or full-time. To add the endorsement, please visit the Washington State Department of Revenue's Gig Harbor Business License Page.