What is the sales tax in Sinai city? - The sales tax in Sinai city of South Dakota is 4.2% as of 2025. Use the Sinai sales tax calculator to calculate the sales tax for any purchase in Sinai.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Sinai.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Brookings | South Dakota | Sinai | 57061 | 4.2% | 0% | 0% | 4.2% |