South Dakota Reverse Sales Tax Calculator
South Dakota has a 4.5% state sales tax, and cities add between 0% and 2% on top. Sioux Falls is at 6.2%, Rapid City at 6.5%. The statewide average is 6.4%. South Dakota is one of the few states that taxes groceries at the full rate — there is no exemption for food purchases.
The calculator defaults to South Dakota's 6.4% average. For Sioux Falls use 6.2%, Rapid City 6.5%. Both grocery and retail receipts are taxed at the same rate in South Dakota, so the calculator works the same way for any type of purchase.
Current South Dakota Sales Tax Rates
| Component | Rate |
|---|---|
| State rate | 4.50% |
| Average local rate | 1.90% |
| Average combined rate | 6.40% |
| Location | Combined Rate |
|---|---|
| Sioux Falls | 6.20% |
| Rapid City | 6.50% |
| Aberdeen | 6.50% |
| Brookings | 6.50% |
What's Taxable in South Dakota
South Dakota is one of the few states that taxes groceries at the full rate. Unprepared groceries are subject to the standard 4.5% state rate plus any local additions. There is no grocery exemption. Prescription drugs are exempt.
Worked Example
Purchase in Rapid City totaling $74.75 at 6.50%.
$74.75 ÷ 1.0650 = $70.19 (pre-tax price)
$74.75 − $70.19 = $4.56 (tax amount)
That's $4.56 in sales tax on a $70.19 purchase before tax. The main calculator handles this automatically — enter the total and rate and the breakdown appears instantly.
Frequently Asked Questions
Sioux Falls has a combined rate of 6.2% — South Dakota's 4.5% state rate plus a 1.7% city sales tax. Rapid City and Aberdeen run at 6.5%. South Dakota fully taxes groceries at these same rates.
Yes. South Dakota is one of a handful of states that taxes unprepared groceries at the full combined rate. There is no state-level grocery exemption. A grocery receipt in Sioux Falls would show the same 6.2% rate as any other retail purchase.
Divide the total amount paid by (1 + the tax rate as a decimal). For South Dakota's 6.40% rate: divide by 1.0640. The result is the pre-tax price. Subtract that from the total to get the tax amount. The calculator on this page does this automatically.
South Dakota does not have a sales tax holiday.