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South Dakota Car Sales Tax Calculator

South Dakota doesn't charge regular sales tax on a vehicle. Instead it charges a Motor Vehicle Excise Tax of 4% on the purchase price after your trade-in allowance, due within 45 days of the purchase date. Enter your numbers to see the estimate.

Last reviewed: September 25, 2026Reviewed by Michael Steve

Calculate Your South Dakota Car Sales Tax

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The selling price on your buyer’s order.

What the dealer credits you.

State
South DakotaChange state

Condition

South Dakota's excise tax applies to the purchase price the dealer charges, which includes dealer fees.

Advanced options

Enter your own amounts where you know them. They replace our estimates.

Replaces the state estimate.

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Plates, inspections, add-ons.

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Estimated out-the-door price

$0.00

Enter a vehicle price to see your estimate.

Vehicle price
$0.00
Trade-in
—
Taxable amount
$0.00
Motor Vehicle Excise Tax (4%)
$0.00
Title fee
$0.00
Registration fee
$0.00
Dealer / documentation fee
—
Estimated total
$0.00
How this estimate was calculated

    Estimates are for informational purposes only. Actual taxes and fees may vary based on your location, vehicle, transaction and current state rules.

    Estimated South Dakota Car Sales Tax

    Motor Vehicle Excise Tax4%
    Local taxNone on vehicles
    Trade-inLowers taxable price
    Dealer feeTaxed with the price; limit not confirmed

    In place of sales tax, South Dakota charges a Motor Vehicle Excise Tax of 4% on the purchase price, which comes to $1,000.00 on a $25,000 purchase with no trade-in.

    The taxable amount is the purchase price minus your trade-in value, the same net-price approach most sales-tax states use.

    The excise tax is due within 45 days of the purchase date, and interest accrues at 1% per month (or $5, whichever is greater) on a late payment, calculated from the purchase date regardless of when you actually apply for title and registration.

    South Dakota Car Title and Registration Fees

    South Dakota's title fee is $10, plus a $2 technology fee on the transaction. Registration is weight-based and ranges widely by vehicle type, so we have not added a single flat figure; enter your own amount under Advanced options.

    FeeAmountNotes
    Title feeTitle$12.00A $10 title fee plus a $2 technology fee on the transaction.
    Registration feeRegistrationVariesWeight-based, roughly $36 to $250 or more depending on the vehicle, plus small add-ons (a $1 highway patrol fee, $1 solid waste fee, and mailing fees). Enter your amount under Advanced options.
    Dealer documentation feeSet by the dealerVariesWe have not confirmed a specific South Dakota dollar limit on the dealer documentation fee.

    How South Dakota Car Sales Tax Is Calculated

    1. Start with the purchase price.
    2. Subtract your trade-in value.
    3. Multiply the result by the excise tax rate of 4%.
    4. Add the $10 title fee, $2 technology fee, and your weight-based registration fee to reach your out-the-door price.

    The excise tax is due within 45 days of the purchase date; a late payment accrues interest of 1% of the tax owed per month (or $5, whichever is greater) for the first month, and 1% per month after that.

    Because South Dakota's excise tax is due within 45 days of the purchase date no matter when you file, don't wait too long to title the vehicle. Check the South Dakota Department of Revenue for your county's exact title and registration fees. Read how a trade-in affects sales tax to see how South Dakota's excise tax compares with other states.

    Example South Dakota Car Sales Tax Calculation

    This example assumes the excise tax is paid within the required 45 days, so no late interest applies.

    Vehicle price$25,000.00
    Trade-in−$5,000.00
    Taxable amount$20,000.00
    Motor Vehicle Excise Tax (4%)$800.00
    Title fee$12.00
    Registration feeNot included
    Estimated total$20,812.00

    This is an illustration, not a quote.

    Frequently Asked Questions About South Dakota Car Sales Tax

    Does South Dakota charge sales tax on a car?

    Not regular sales tax. South Dakota charges a Motor Vehicle Excise Tax of 4% instead, on the purchase price after your trade-in value.

    Does a trade-in reduce South Dakota's excise tax?

    Yes. The taxable amount is the purchase price minus the trade-in value.

    What happens if I pay South Dakota's excise tax late?

    It's due within 45 days of the purchase date. A late payment accrues interest of 1% of the tax owed (or $5, whichever is greater) for the first month, and 1% per month after that.

    How much is the title fee in South Dakota?

    $10, plus a $2 technology fee on the transaction. Registration is a separate weight-based annual fee that varies by vehicle type.

    Sources

    Taxes and fees change, so confirm exact amounts with the agencies above.

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