Rates as of September 2026
South Dakota Sales Tax Calculator
South Dakota’s state sales tax rate is 4.2%. Local taxes add 0%–3%, for combined rates of 4.2%–7.2%.
Results
Enter a South Dakota ZIP code to see its combined state, county, city and district rate.
Calculate tax on a sale
Look up a rate, then enter an amount to see the tax and total.
This is an estimate based on location alone. The tax you owe also depends on what you sell, who you sell to and the exact delivery address. If you intend to rely on these rates, use the Kintsugi platform (opens in a new tab).
How the South Dakota calculator works
Enter a ZIP code and the calculator adds up the state, county, city and district rates for it, multiplies your amount by the total and rounds the tax to the nearest cent. For the formula and worked examples, see how to calculate sales tax. Rates are as of September 2026.
See South Dakota rates for major cities, or read the South Dakota sales tax guide for what’s taxable, when you have to register and how to file. For other states, use the US sales tax calculator, and to split a tax-inclusive total, the reverse sales tax calculator.
South Dakota sales tax rates at a glance
- ZIP codes in the rate data: 361
- Lowest combined rate: 4.2%, in Akron (Plymouth County)
- Highest combined rate: 7.2%, in Roslyn (Day County)
- Most common combined rate: 6.2%, in 69% of ZIP codes
- Counties with their own sales tax: 0
Sales tax rates in major South Dakota cities
The 7 cities with the most ZIP codes in the rate data, with the parts that make up each combined rate.
| City | Combined | State | City tax |
|---|---|---|---|
| Sioux Falls (Minnehaha County) | 6.2% | 4.2% | 2% |
| Rapid City (Pennington County) | 6.2% | 4.2% | 2% |
| Aberdeen (Brown County) | 6.2% | 4.2% | 2% |
| Brookings (Brookings County) | 6.2% | 4.2% | 2% |
| Chamberlain (Brule County) | 6.2% | 4.2% | 2% |
| Huron (Beadle County) | 6.2% | 4.2% | 2% |
| Spearfish (Lawrence County) | 6.2% | 4.2% | 2% |
When you have to collect South Dakota sales tax
A remote seller has to register and collect South Dakota sales tax once its sales into the state meet the economic nexus threshold: $100,000 in sales in the current or previous calendar year, per the state tax agency. A physical presence such as an office, employees or inventory creates nexus on its own. The South Dakota sales tax guide covers registration and filing once you do.
Frequently Asked Questions
