King County, WashingtonSales Tax Rate 2024

King County, located in Central Western Washington, has sales tax rates ranging from 8.80% to 10.50%.
The sales tax rate in King County includes the Washington state tax and the district’s specific combined local sales tax rates. Certain jurisdictions levy special district taxes. The table below provides a breakdown of the sales tax rate by jurisdiction.
Washington 6.50%
King County 0.00%
City + District Rates Range 2.30% – 4.00%
Combined Sales Tax Rates Range 8.80% – 10.50%

King County Sales Tax Calculator

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State 0.00%
County 0.00%
City 0.00%
District(s) 0.00%
The TaxHero sales tax calculator provides a combined sales tax rate based on a full address lookup. A complete address ensures precision since ZIP codes may cross different tax jurisdictions. Results are for reference and may need additional context for compliance. Contact us today for a demo and learn how TaxHero can support your business.

Who Needs to Collect Sales Tax in King County, Washington?+

Businesses are required to collect sales tax in King County if they have a sales tax nexus in Washington and sell to residents of King County, whether at a physical location within the county or online.

Physical Nexus: This occurs when a business has a tangible presence in the state. Examples include having a store, warehouse, office, or employees in Washington if your business operates any of these within the state, you have a physical nexus and must collect sales tax from customers in King County.
Economic Nexus: This is based on the volume of sales or number of transactions a business conducts in the state. For instance, if your business exceeds a certain threshold of sales or transactions in Washington which is often defined as a specific dollar amount or number of transactions, you establish economic nexus. This means even if you don’t have a physical presence in the state, you are still required to collect sales tax from customers in King County.

City Sales Tax Rates in King County, WA+

Bellevue
Kent
Kirkland
Redmond
Renton
Seattle
 

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