WA State Sales Tax Calculator Posted by Calculator Study April 12, 2025 Washington State Sales Tax Calculator 2024 | Fast & Accurate WA State Sales Tax Calculator The Washington State Sales Tax Calculator helps residents and businesses instantly calculate total purchase costs including state and local taxes. Tax Calculator State Tax Only (6.5%) Seattle (10.4%) Bellevue (10.1%) Tacoma (9.6%) Calculate Tax Clear All Cursive Fonts Generator Tool Post navigation Previous Post Auto Loan Calculator with Sales TaxNext PostAmazon Sales Tax Calculator