What is the sales tax in Saint Helena city? - The sales tax in Saint Helena city of California is 9% as of 2025. Use the Saint Helena sales tax calculator to calculate the sales tax for any purchase in Saint Helena.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Saint Helena.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Napa | California | Saint Helena | 94574 | 6% | 0% | 0.25% | 9% |