Kelso Sales Tax
What is the sales tax for Kelso, Washington? - The sales tax for Kelso, Washington is 8.1% as of 2026. 8.1% is the combine sales tax from 6.5% of Washington state sales tax, 1.6% of local sales tax, and 0% of Cowlitz county sales tax.
| State | Washington | State Tax | 6.5% |
|---|---|---|---|
| City | Kelso | City Tax | 1.6% |
| County | Cowlitz | County Tax | 0% |
| Special Tax | 0% | ||
| Total Sales Tax | 8.1% | ||
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