South Dakota Sales Tax Calculator
South Dakota's confirmed state base rate is 4.2 percent. Enter the transaction lines and any local rate that applies, then the calculator shows the amount, state rate, local rate, combined rate, tax, and total.
Calculate sales tax
The state rate comes from the versioned data file. Enter a local rate only when it applies to the transaction location.
South Dakota municipalities can add local sales tax rates.
| Amount before tax | $0.00 |
| South Dakota state rate | 4.2% |
| Local rate | 0% |
| Combined rate | 4.2% |
| Estimated tax | $0.00 |
| Total | $0.00 |
Source record
The 4.2% sales and use tax figure was reviewed on 2026-07-18. Rates change, and taxability and sourcing depend on the specific transaction.
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Current South Dakota state rate
South Dakota's confirmed state base rate is 4.2 percent. The source was reviewed on 2026-07-18. South Dakota municipalities can add local sales tax rates.
Economic nexus for remote sellers
A confirmed threshold is not included in this release. Check South Dakota Revenue remote seller guidance.
Filing frequency and records
South Dakota assigns filing frequency based on the registered account and liability. Keep the transaction location, item taxability, exemption evidence, rate source, tax collected, return, and payment together so the liability can be reconciled.
Rate and sourcing note
Rates change, and taxability and sourcing depend on the specific transaction. Confirm the current treatment with the linked department before collecting or filing.
Frequently asked questions
What is the South Dakota state sales tax rate?
South Dakota's confirmed state base rate is 4.2 percent.
Does South Dakota have local sales tax?
South Dakota municipalities can add local sales tax rates.
Does the calculator decide whether a South Dakota sale is taxable?
No. It calculates from the confirmed state rate and the local rate you enter. Product taxability, sourcing, exemptions, nexus, and marketplace rules require separate review.
Sources
Reviewed 2026-07-18.
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