Yes, Washington has an economic nexus law, meaning businesses must collect sales tax if they have over $100,000 in sales or 200 transactions in the state, even if they don’t have a physical presence. Washington is a destination-based sales tax state, so the tax rate is based on the buyer’s location. Marketplace facilitators like Amazon and Etsy may collect tax on your behalf, but it’s your responsibility to verify compliance.
Learn more on the Washington State Department of Revenue website.