South Dakota Auto Loan Calculator 2026

Frequently Asked Questions — South Dakota

What is the car sales tax in South Dakota?

South Dakota's state sales tax rate on vehicle purchases is 4.5%. On a $35,000 car, that's $1,575 in sales tax added to the purchase price before financing.

How much is a $35,000 car payment in South Dakota?

In South Dakota, a $35,000 car with 20% down ($7,000), 4.5% sales tax ($1575), and a 60-month loan at 7.05% APR results in a financed amount of $29,575 and a monthly payment of approximately $586.32. Total interest paid over 60 months: $5604.

Does South Dakota sales tax apply to vehicle purchases?

Yes. South Dakota applies a 4.5% state sales tax to vehicle purchases. The tax is typically calculated on the purchase price minus any manufacturer rebates (rules vary by state). Local county and city taxes may add additional percentage points on top of the state rate.

Should I buy a car in a neighboring no-tax state?

Buying a car in a no-sales-tax state (Alaska, Delaware, Montana, New Hampshire, Oregon) to avoid South Dakota's 4.5% tax may seem appealing, but most states require you to pay your home state's sales/use tax when you register the vehicle. Unless you establish residency there, you'll likely owe the 4.5% use tax when registering in South Dakota.