South Dakota sales tax rates (July 1, 2026)
| Rate | |
|---|---|
| State sales tax | 4.2% |
| Average local sales tax | 1.91% |
| Combined average | 6.11% |
| Highest combined rate | 8.7% |
South Dakota's combined average rate ranks #36 highest of the 50 states and Washington, DC.
Sales tax on common amounts in South Dakota
| Price | Sales tax | Total |
|---|---|---|
| $10 | $0.61 | $10.61 |
| $25 | $1.53 | $26.53 |
| $50 | $3.06 | $53.06 |
| $100 | $6.11 | $106.11 |
| $500 | $30.55 | $530.55 |
| $1,000 | $61.10 | $1,061.10 |
How to calculate South Dakota sales tax
Multiply the price by the rate as a decimal. At 6.11%, tax on a $100 purchase is 100 × 0.0611 = $6.11, for a total of $106.11. To find the price before tax from a total, divide by 1.0611.
South Dakota vs. neighboring states
| State | State rate | Combined average |
|---|---|---|
| South Dakota | 4.2% | 6.11% |
| North Dakota | 5% | 7.09% |
| Minnesota | 6.88% | 8.14% |
| Iowa | 6% | 6.94% |
| Nebraska | 5.5% | 6.98% |
| Wyoming | 4% | 5.39% |
| Montana | 0% | 0% |
Frequently asked questions
What is the sales tax rate in South Dakota?
The state rate is 4.2%. With local taxes, the average combined rate is 6.11% and can reach 8.7% in some places.
Do cities and counties in South Dakota charge sales tax?
Yes. Local rates average 1.91% and go as high as 4.5%, so the total depends on where you buy.
Is shopping cheaper in a state next to South Dakota?
Among neighboring states, Montana (0%) and Wyoming (5.39%) have a lower average combined rate. If you live in South Dakota, you may still owe use tax on items you bring home.
Is sales tax charged on everything?
No. States set their own rules, and many exempt or reduce tax on groceries, prescription drugs, or other items. Check the state revenue department for a specific product.