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South Dakota Sales Tax Calculator and Remote Seller Nexus Check (4.2%)

What does this come to under the current IRS rules?

Sales tax on a sale at the 4.2% statewide rate plus your local rate, and whether your sales into South Dakota pass the $100,000 economic nexus threshold.

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  • Nothing stored or sent
  • Free, no sign-up
Your figures
Example figuresIllustrative only. Type over them with your own.
Sales tax due
$42.00
Tax on the sale in South Dakota
All results
MeasureResult
Statewide base rate4.2%
Combined rate4.2%
State tax$42.00
Local tax$0.00
Sales tax due$42.00
Total with tax$1,042.00
Sales counted toward the threshold$90,000
Sales test (more than $100,000)Not met
Economic nexus reached
Below the South Dakota threshold
No
How this was worked out
Work shownrecomputed as you type
Sales tax = sale x (4.2% + local rate)
Nexus when counted sales are more than $100,000 in the previous or current calendar year

Illustrative arithmetic on the figures you enter. Check the result against your firm's methodology before relying on it.

The formulas

  • Sales tax = sale x (4.2% + local rate)
  • Nexus when counted sales are more than $100,000 in the previous or current calendar year

How it works

Figures current as of November 2026.

The state rate is 4.2 percent from July 1, 2023 through June 30, 2027, when the reduction sunsets. The tool multiplies the sale amount by the statewide base rate plus the local rate you enter (municipal sales tax for the delivery address) and shows the state and local parts separately. The local rate depends on where the goods are delivered.

A seller with no physical presence in South Dakota must register and collect once it has more than $100,000 of gross sales into South Dakota in the previous or current calendar year. The 200-transaction test was removed effective July 1, 2023.

A seller with a physical presence in South Dakota, such as staff, an office or inventory, must collect regardless of the threshold. The tool does not decide whether a product is taxable or exempt; enter the taxable price.

Illustrative figures only. Check the result against your firm's methodology before relying on it.

Common questions

What is the South Dakota sales tax rate?

The state rate is 4.2 percent from July 1, 2023 through June 30, 2027, when the reduction sunsets. Local rates are added on top by delivery address.

What is the South Dakota economic nexus threshold?

More than $100,000 of gross sales into South Dakota in the previous or current calendar year.

Did South Dakota change its threshold recently?

The 200-transaction test was removed effective July 1, 2023.

Sources

Runs in your browser. The figures you type are not sent to CORAA or stored. Check the result against your firm's methodology before relying on it.

Related audit calculators

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