What is the sales tax in Onalaska city? - The sales tax in Onalaska city of Washington is 7.8% as of 2026. Use the Onalaska sales tax calculator to calculate the sales tax for any purchase in Onalaska.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Onalaska.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Lewis | Washington | Onalaska | 98570 | 6.5% | 0% | 1.3% | 7.8% |