How South Dakota sales tax works
South Dakota charges a state sales tax of 4.20%, and most areas add a local rate on top.
The average combined rate is about 6.10%, but the exact figure depends on your county or city. 4.2% state rate plus municipal taxes.
Sales tax is added at checkout to the price of taxable goods and some services, so the total you pay is the listed price plus the combined rate.
State vs local sales tax in South Dakota
The state portion is fixed across South Dakota; the local portion varies by jurisdiction, which is why two towns can charge different totals.
This calculator uses the average local rate. For an exact figure, check the combined rate for the specific ZIP code where the sale takes place.
What is taxed in South Dakota
Most physical goods are taxable. Many states exempt or reduce tax on groceries, prescription drugs and some services, so rules vary by category.
This is a planning estimate of average combined sales tax. Confirm the rate and what is taxable with the South Dakota Department of Revenue (dor.sd.gov).
Frequently asked questions
What is the sales tax rate in South Dakota?
The South Dakota state rate is 4.20%, and the average combined state-and-local rate is about 6.10%.
How do I calculate South Dakota sales tax?
Multiply the purchase amount by the combined rate. This calculator does it for you and shows the state and local portions separately.
Why is my local rate different?
Counties and cities set their own local sales tax, so the total varies by location. This tool uses the state average; your exact ZIP code may differ.
Are groceries taxed in South Dakota?
Many states exempt or reduce tax on groceries and prescriptions. Check the South Dakota Department of Revenue (dor.sd.gov) for the categories that apply where you shop.