South Dakota Auto Loan Calculator
Calculate your car payment in South Dakota with 4.2% state sales tax (up to 6.2% with local). See monthly payment, total interest, and total cost.
How This Calculator Works
Calculation methodology and assumptions
Auto loan calculation for South Dakota. South Dakota's state sales tax of 4.2% is applied to the vehicle price minus trade-in value. Local taxes may add up to 2% more. Monthly payment uses standard amortization: P × [r(1+r)^n] / [(1+r)^n - 1].
Key State Information
South Dakota auto buying facts: State sales tax 4.2%, up to 2% additional local tax. Average car insurance in South Dakota: $1,420/year. On a $35,000 vehicle, South Dakota sales tax alone is $1,470.
Frequently Asked Questions
How much is sales tax on a car in South Dakota?
South Dakota's state sales tax rate is 4.2%. Local jurisdictions can add up to 2% more, for a maximum combined rate of 6.2%. On a $35,000 car, state sales tax is approximately $1,470.
What is the average car insurance cost in South Dakota?
The average annual car insurance premium in South Dakota is $1,420, or about $118/month. This is below the national average.