What is the sales tax in Kennewick city? - The sales tax in Kennewick city of Washington is 8.7% as of 2025. Use the Kennewick sales tax calculator to calculate the sales tax for any purchase in Kennewick.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Kennewick.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Benton | Washington | Kennewick | 99338 | 6.5% | 2.2% | 0% | 8.7% |