South Dakota Car Sales Tax Calculator

What you pay in tax when you buy a vehicle in South Dakota, from the statute and the revenue department.

Verified September 21, 2026 · statute and revenue department cross-checked

Vehicle price (USD) Trade-in value (USD)

Buying the car is only half the cost. You still owe an annual registration fee.

See South Dakota vehicle registration fees →

What to know about South Dakota

The 4 percent excise replaces both state and municipal sales tax, so nothing is added on top. Dealers do not collect it; you pay the county treasurer within 45 days. Trade-in credit works in private sales too. If you already paid a similar tax in any other state, South Dakota charges you nothing.

Sources

Statute: SDCL § 32-5B-1

South Dakota Department of Revenue, Title, Fees and Registration
“Motor vehicles registered in the State of South Dakota are subject to the 4% motor vehicle excise tax.”

SDCL § 32-5B-11
“If any motor vehicle has been subjected previously to a sales tax, use tax, motor vehicle excise tax, or similar tax by this or any other state or its political subdivision, no tax is owed to this state if the tax has been paid by the applicant”

Last verified: September 21, 2026.

Estimates only. Your dealer or the state issues the final bill, and exemptions can change what you owe. This page does not collect or store anything you enter.