What is Sales Tax Calculator?
Free US sales tax calculator for all 50 states + DC. Add tax to a pre-tax price, or reverse-calculate the original price from a tax-inclusive total. Includes a multi-item cart mode. Free to embed on your website. No signup required.
Sales Tax runs entirely in your browser using JavaScript (browser). Your data never leaves your device.
Free South Dakota Sales Tax Calculator
South Dakota combined sales tax rate is 6.10% — 4.20% state plus 1.90% average local. Rates updated for 2026.
Tax Rate
State Rate
4.20%
Avg Local
1.90%
Combined
6.10%
State rates sourced from Tax Foundation 2026 data. Local rates are averages — your exact rate may vary by city and county. Always verify with your state's revenue department for compliance.
South Dakota Sales Tax — Common Questions
What is the sales tax rate in South Dakota?
The combined South Dakota sales tax rate is 6.10% — 4.20% state rate plus an average local rate of 1.90%. Your exact rate may be higher or lower depending on your city and county.
How do I calculate sales tax in South Dakota?
Multiply your pre-tax price by 0.0610 to get the tax amount, then add it to the original price for the total. For example, a $100 purchase in South Dakota adds $6.10 in tax for a total of $106.10.
Are groceries taxed in South Dakota?
Grocery tax rules vary by state. South Dakota has a base state rate of 4.20%, but many states exempt groceries or tax them at a reduced rate. Check the South Dakota Department of Revenue for current grocery tax exemptions.