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Live Data: April 2026

Kennewick, WA Sales Tax Rate 2026

The combined sales tax rate in Kennewick, Washington is 8.800%.

Combined Rate 8.800%
State6.500% City2.300%

Kennewick Sales Tax Breakdown

Jurisdiction Rate
Washington State Sales Tax 6.500%
City / Municipal Tax 2.300%
Total Combined Rate 8.800%

Which County Is Kennewick In?

Kennewick falls within Benton, Washington. Benton imposes a 1.600% county-level sales tax in addition to the Washington state base rate.

Kennewick ZIP Codes

The following ZIP codes are mapped to Kennewick for sales tax purposes. All listed codes apply the 8.800% combined rate.

99336 99337 99338

Business Nexus in Washington

Economic Nexus Threshold

Selling into Washington from out of state? Once you exceed $100,000 in annual sales or 200 transactions, you must register and collect Washington sales tax.

FAQ: Kennewick Sales Tax

The combined sales tax rate in Kennewick, Washington is 8.800% as of 2026.
Multiply your purchase price by 8.800% to find the tax owed. A $500 purchase would include $44.00 in sales tax.
Groceries are generally taxable in Washington. Check the official Department of Revenue for specific exemptions.
Vehicle purchases in Kennewick are subject to the 8.800% combined rate, though some states apply different rules for vehicle sales. Verify with the Washington Department of Revenue or DMV.
Register for a sales tax permit through the official Washington Department of Revenue website. Registration is typically free and required before collecting any sales tax.

Sales Tax Calculator

Using 8.800% rate for Kennewick, WA

$
Tax Amount $0.00
Total with Tax $100.00

Rate applied: 8.800% combined

Official Tax Authority

Washington State Department of Revenue

Filing Deadline: Monthly, quarterly, or annual returns. Due dates vary by filing frequency. File via My DOR portal.

Visit Official Portal (800) 647-7706