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Sales tax & VAT / South Dakota Sales Tax Calculator

South Dakota Sales Tax Calculator

US rates · checked 20 Oct 2026
$

Enter a number of at least 0

%

Enter a number from 0 to 15%

Leave at 0 for the South Dakota state rate only. Add your local rate to match a receipt.

Total with tax
$104.20
$4.20sales tax
4.2%combined rate
$0total $104.20
  • Price
  • South Dakota tax
Price before tax$100.00
South Dakota state tax · 4.2%+$4.20
Local tax · none entered+$0.00
Total the buyer pays$104.20

State rate 4.2%, checked against the South Dakota revenue department on 20 Oct 2026. Local taxes are not included.

See breakdown

How the South Dakota sales tax calculation works

South Dakota's sales tax rate is 4.2%: $4.20 on a $100 sale and $42 on $1,000. This is the state rate only. If a city, county or district in South Dakota charges its own tax, it is added on top of this rate. Enter your price and any local rate to see the South Dakota sales tax and the total.

  1. Start with the 4.2% state rate

    South Dakota charges 4.2% on taxable sales. South Dakota's 4.2% rate is set to return to 4.5% after 30 June 2027 unless the law changes.

  2. Add your local rate if there is one

    If a city, county or district in South Dakota charges its own tax, it is added on top of this rate. Enter that rate as the local tax; South Dakota's revenue department lists the rate for each address.

  3. Multiply the price by the rate

    Divide 4.2% by 100 and multiply: $100 × 0.042 = $4.20, and $250 × 0.042 = $10.50.

  4. Add the tax to the price

    A $250 item in South Dakota costs the buyer $260.50 at the state rate, before any local tax.

Worked example. A $250.00 sale in South Dakota at the 4.2% state rate carries $10.50 in sales tax, for a $260.50 total. If a 1% local tax applied on top, the combined rate would be 5.2% and the South Dakota buyer would pay $263.00.

South Dakota Sales Tax FAQ

What is the sales tax rate in South Dakota?

The South Dakota state sales tax rate is 4.2%, checked on 20 Oct 2026. South Dakota's 4.2% rate is set to return to 4.5% after 30 June 2027 unless the law changes. Local taxes, where they apply, are extra.

How much is sales tax in South Dakota on $100?

$4.20 at the 4.2% state rate, so a $100 purchase in South Dakota costs $104.20 before any local tax. On $250 the tax is $10.50, and on $1,000 it is $42.00.

How do I calculate South Dakota sales tax?

Multiply the price by 0.042 ($100 × 0.042 = $4.20), then add the tax to the price to get the South Dakota total. If you also owe a local rate, add it to 4.2% first.

How do I take South Dakota sales tax out of a total?

Divide the total by 1.042: a $100.00 South Dakota receipt at 4.2% is $95.97 before tax plus $4.03 in tax. The Reverse Sales Tax Calculator does this for any rate.

Is the South Dakota sales tax rate the same everywhere?

The 4.2% state rate applies statewide. If a city, county or district in South Dakota charges its own tax, it is added on top of this rate.

How does South Dakota compare with other states?

Of the 44 other states and D.C. with a sales tax, 39 charge more than 4.2% and 6 charge less. The median state rate is 6%, California's 7.25% is the highest base rate, and 5 states (Alaska, Delaware, Montana, New Hampshire and Oregon) have none.

Why is my South Dakota receipt different?

Receipts include local taxes where they apply, and some items are taxed at a different rate or exempt. Enter your local rate above, and check South Dakota's rules for the item.

Sources: South Dakota Codified Law 10-45-2 · South Dakota Department of Revenue: sales and use tax · Federation of Tax Administrators: state tax agencies · smbcalc: how we check our numbers

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Other states

State base rates, checked against each state's revenue department on 18 Oct 2026. In most states, cities and counties add a local rate on top; each state's page explains how to add yours.