South Dakota Sales Tax Calculator
South Dakota sales tax is 4.2% statewide, according to the state’s own tax page (checked November 8, 2026). The South Dakota page we read does not say whether local sales taxes apply, so check the state’s own lookup for the combined rate at an address. On a $200.00 price at 4.2%, the state tax is $8.40 and the total is $208.40.
Maintained by Archie Chang · Rate checked November 8, 2026 · Methodology & sources
Your purchase
Starts at 0. Local rates are not built in: look yours up on the state’s official rate tool and type it here.
Tax and total
Total with tax
$104.20
Combined rate 4.2%
The tax rounds half up to the cent. A seller’s own rounding rules and any items taxed at other rates can change the final charge.
FedRateCalc is not a tax agency and this is not tax advice. The state tax agency’s own rate page and lookup tool are authoritative, and a seller’s receipt shows the tax actually charged.
South Dakota rate and local taxes
Statewide rate: 4.2%. The page does not state when the rate took effect.
The South Dakota page we read does not say whether local sales taxes apply, so check the state’s own lookup for the combined rate at an address. This site does not show an average local rate because no official source publishes one.
Official page: South Dakota tax agency page.
Worked example
A $200.00 purchase at the 4.2% state rate: $200.00 × 4.2% = $8.40 of state tax, so the total is $200.00 + $8.40 = $208.40 before any local tax. To work backward from a total that includes tax, divide it by 1 plus the combined rate.
Frequently asked questions
What is the South Dakota sales tax rate?
The statewide rate on South Dakota’s official page is 4.2%. It was checked on November 8, 2026; rates change, so confirm on the state page before filing.
Does South Dakota have local sales taxes?
The South Dakota page we read does not say whether local sales taxes apply, so check the state’s own lookup for the combined rate at an address.
How do I find the price before tax from a South Dakota total?
Divide the total by 1 plus the combined rate as a decimal. At 4.2% and no local tax, a total of $208.40 divided by 1.042 is $200.00 before tax.
Where is the official South Dakota rate page?
The page this calculator’s rate comes from is https://dor.sd.gov/businesses/taxes/sales-use-tax/.
Cite this page
Page title: South Dakota Sales Tax Calculator: 4.2% State Rate. Updated November 8, 2026. Canonical URL: https://fedratecalc.com/sales-tax-calculator/south-dakota/
Data source: South Dakota tax agency sales tax page, compiled by FedRateCalc.
Plain-text citation
FedRateCalc. South Dakota Sales Tax Calculator: 4.2% State Rate. Updated November 8, 2026. https://fedratecalc.com/sales-tax-calculator/south-dakota/HTML link
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