South Dakota · Sales Tax
The South Dakota state sales tax rate is 4.5%. On a $100 purchase, the tax is $4.50, for a total of $104.50.
| South Dakota Sales Tax | Rate | On $100 | On $1,000 |
|---|---|---|---|
| State base rate | 4.5% | $4.50 | $45.00 |
| Maximum combined | 6.5% | $6.50 | $65.00 |
| Pre-tax from $108.50 total | — | ÷1.0450 |
The state base sales tax rate in South Dakota is 4.5%. Most cities add 2%; Sioux Falls 6.5%; Rapid City 6.5%. The maximum combined rate (state plus highest local) reaches 6.5%.
Multiply the pre-tax price by 0.0450 (the decimal form of 4.5%). For example, a $250 purchase has a South Dakota state sales tax of $11.25, for a total of $261.25. To reverse-calculate: if you have the total and want the pre-tax price, divide the total by 1.0450.
Food and grocery tax rules vary by state. In South Dakota, the standard rate of 4.5% applies, though some states exempt grocery staples. Check the South Dakota Department of Revenue for specific grocery exemption rules.
The South Dakota state rate of 4.5% is below the national median of approximately 6.0%. Combined with local rates, the effective rate in South Dakota ranges from 4.5% to 6.5%.