Washington Sales Tax: Rates, Exemptions, Nexus, and Filing Requirements Explained

Washington has a statewide sales and use tax rate of 6.5%, with additional local taxes possible.
Sales tax applies to tangible personal property and certain services; sellers must collect and remit tax if they have physical or economic nexus ($100,000 gross receipts threshold).
Exemptions include food, certain medical items, agricultural products, and sales to specific entities (e.g., wholesalers, resellers, relief organizations).
Exemptions require a valid exemption certificate (Form 27 0032 or F0003).
All businesses must file and pay sales tax electronically, with several e-filing options available.

Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.