South Dakota sales tax at a glance
South Dakota's typical combined rate of 6.11% ranks 36th highest among the 50 states. South Dakota's 4.2% state rate is a temporary cut scheduled to sunset in June 2027.
What sales tax adds at the register
At the average combined rate of 6.11%:
| Price | Sales tax | Total |
|---|---|---|
| $25 | $1.53 | $26.53 |
| $100 | $6.11 | $106.11 |
| $500 | $30.55 | $530.55 |
| $2,000 | $122.20 | $2,122.20 |
South Dakota vs. the national average and its neighbors
The average combined state-and-local sales tax across the 50 states is about 6.66%. South Dakota's 6.11% is 0.55 points below that — on a $30,000 car, about $165 less than the national average buyer pays. Combined with no state income tax, that shapes how South Dakota funds itself — see the South Dakota paycheck calculator for the payroll side.
Border shopping is real: here's what the same purchases cost across state lines, at each state's average combined rate.
| State | Combined rate | Tax on $250 | Tax on $30,000 |
|---|---|---|---|
| South Dakota | 6.11% | $15.28 | $1,833 |
| Montana | 0% | $0.00 | $0 |
| Wyoming | 5.39% | $13.48 | $1,617 |
| Iowa | 6.94% | $17.35 | $2,082 |
| Nebraska | 6.98% | $17.45 | $2,094 |
| North Dakota | 7.09% | $17.73 | $2,127 |
| Minnesota | 8.14% | $20.35 | $2,442 |
Vehicle purchases are usually taxed by the state where the car is registered, not where it's bought — so the car column shows the rate you'd owe as a resident, not a border-shopping opportunity.
Reading a South Dakota receipt
A South Dakota receipt typically shows tax as a single line at the combined rate, even though the money is split between the state and one or more local jurisdictions. To check a receipt: multiply the taxable subtotal by 0.0611 (the 6.11% average) — if the tax line is meaningfully higher, you're in a locality above the average, up to 8.7%; if lower, some items were exempt (groceries and prescriptions are exempt or reduced in most states). The reverse mode on the calculator above recovers the pre-tax price from any total.
Frequently asked questions
+What is the sales tax in South Dakota in 2026?
South Dakota's state sales tax is 4.2%. Cities, counties and districts add local taxes averaging 1.91% (population-weighted), for a typical combined rate of 6.11% — and up to 8.7% in the highest-tax localities. South Dakota's 4.2% state rate is a temporary cut scheduled to sunset in June 2027.
+How do I calculate South Dakota sales tax backwards from a total?
Divide the total by 1 plus the rate as a decimal. At 6.11%, a $106.11 total means a $100.00 price and $6.11 tax. Choose "Total after tax (reverse)" above to do it automatically.
+Do online orders charge South Dakota sales tax?
Yes. Since the Wayfair decision, large online sellers must collect South Dakota sales tax based on your delivery address — the same state and local rate you'd pay in a store.
+How much is sales tax on a $30,000 car in South Dakota?
About $1,833 at the 6.11% average combined rate ($1,260 at the 4.2% state rate alone). Vehicle tax is generally assessed by your state of registration and collected when you title the car; some states cap or exempt private-party sales.
+How does South Dakota's sales tax compare nationally?
South Dakota's 6.11% average combined rate ranks 36th highest of the 50 states, versus a national average of about 6.66%.
+Is the rate the same everywhere in South Dakota?
No. Local rates vary by city and county, from 4.2% (state only) up to about 8.7%. Use a recent receipt or your state revenue department's lookup for your exact address.
Rates as of July 1, 2026, from state revenue departments compiled by the Tax Foundation; local averages are population-weighted. Product exemptions (groceries, clothing, medicine) vary by state. Estimates only — see our terms.