KENNEWICK Sales Tax Overview
As of 2026, KENNEWICK, Washington has an average combined sales tax rate of 8.8%, with rates varying across 4 zip codes from 8.8% to 8.8%. This rate includes the Washington state tax of 6.5% plus applicable county and local taxes.
Different areas within KENNEWICK may have different rates due to special tax districts, transit authority taxes, or other local levies. It is important to use your exact zip code when calculating taxes for purchases, business filings, or compliance purposes.
KENNEWICK Tax Examples
* Based on average rate of 8.8%. Verify with your exact zip code.
KENNEWICK Zip Codes & Tax Rates
Frequently Asked Questions
What is the sales tax rate in KENNEWICK, WA?
The average sales tax rate in KENNEWICK, WA is 8.8% as of 2026. This includes the 6.5% Washington state tax plus any county and city taxes.
How many zip codes are in KENNEWICK, WA?
KENNEWICK, WA has 4 zip codes in our database: 99336, 99337, 99338, 99352.
How much is sales tax on a $100 purchase in KENNEWICK?
On a $100 purchase in KENNEWICK, WA you would pay approximately $8.80 in sales tax at the average rate of 8.8%, for a total of $108.80.
Is KENNEWICK's sales tax rate higher than the Washington average?
Use our calculator to compare KENNEWICK's rate of 8.8% against other cities in Washington. Visit the Washington state page for the statewide average.