Sales tax United States · Rates as of 1 July 2026
South Dakota Sales Tax Rate (2026)
South Dakota sales tax is 4.2% statewide; with city and county taxes the average combined rate is 6.11%. Use the calculator to add or remove tax from any price.
South Dakota sales tax calculator
Your exact rate depends on the city and county of the sale; enter it above if you know it.
How South Dakota sales tax works
South Dakota's state rate is 4.2%, and it applies to many services as well as goods.
To calculate it, multiply the price by the rate: tax = price × 6.11 ÷ 100. A $40 purchase at the average combined rate carries $2.44 tax, for $42.44 in total. To strip tax out of a receipt total, divide by 1.0611.
South Dakota sales tax on common amounts
| Price | Tax at 4.2% (state) | Tax at 6.11% | Total at 6.11% |
|---|---|---|---|
| $10.00 | $0.42 | $0.61 | $10.61 |
| $25.00 | $1.05 | $1.53 | $26.53 |
| $50.00 | $2.10 | $3.06 | $53.06 |
| $100.00 | $4.20 | $6.11 | $106.11 |
| $250.00 | $10.50 | $15.28 | $265.28 |
| $500.00 | $21.00 | $30.55 | $530.55 |
| $1,000.00 | $42.00 | $61.10 | $1,061.10 |
South Dakota vs neighbouring states
| State | State rate | Avg. combined | Tax on $100 |
|---|---|---|---|
| South Dakota | 4.2% | 6.11% | $6.11 |
| North Dakota | 5% | 7.09% | $7.09 |
| Minnesota | 6.875% | 8.14% | $8.14 |
| Iowa | 6% | 6.94% | $6.94 |
| Nebraska | 5.5% | 6.98% | $6.98 |
| Wyoming | 4% | 5.39% | $5.39 |
| Montana | 0% | 0% | $0.00 |
States with a similar sales tax to South Dakota
Comparing places to shop, work or move? These states have the closest average combined rate to South Dakota's 6.11%.
- Idaho sales tax (6.03%)
- District of Columbia sales tax (6%)
- Kentucky sales tax (6%)
- Maryland sales tax (6%)
Frequently asked questions
What is the sales tax rate in South Dakota?
The South Dakota state sales tax rate is 4.2%. Local taxes add an average of 1.91%, for an average combined rate of 6.11%.
How much is the sales tax on $100 in South Dakota?
At the state rate, $4.20 (total $104.20). At the average combined rate, $6.11 (total $106.11).
How do I calculate South Dakota sales tax?
Multiply the price by the rate as a decimal. Example: $50 × 6.11% = $3.06. To remove tax from a total, divide by (1 + rate): $100 ÷ 1.0611 = $94.24 before tax.
Is South Dakota sales tax high?
South Dakota ranks #36 of 50 states for average combined sales tax (1 = highest). The population-weighted US average combined rate is about 7.5%.
Sources
- Tax Foundation, State and Local Sales Tax Rates, Midyear 2026 (rates as of 1 July 2026; local rates are population-weighted averages).
- State departments of revenue for statewide rates and exemptions.
Rates change. Always confirm the exact rate for a specific address with the relevant tax authority before filing or invoicing.