The South Dakota auto loan calculator estimate for a $35,000 new car with $3,500 down, financed over 60 months at today's MonitorBankRates South Dakota average new auto loan APR of 7.38% with the South Dakota vehicle sales tax of 4.20% and $300 in fees added to the loan, is a monthly car payment of about $665, or about $750 a month with the average South Dakota car insurance premium included, verified by MonitorBankRates as of September 24, 2026.
Lenders serving South Dakota currently advertise auto loan APRs from 4.15% to 5.50% across the 5 offers listed below. This calculator finances what a South Dakota dealer actually finances: the price minus your down payment and trade in, plus South Dakota sales tax and fees. The APR is today's MonitorBankRates South Dakota average; switch to used with one click or apply a verified lender APR from the panel below. The same loan at the South Dakota used car average of 9.11% costs about $692 a month.
South Dakota Car Payment Estimator
Prefilled with the MonitorBankRates South Dakota average APR, the South Dakota sales tax rate and average insurance. Results update as you type.
Where the amount financed comes from
| Vehicle price | $0 |
| South Dakota sales tax | $0 |
| Title, registration and fees | $0 |
| Down payment | $0 |
| Trade in | $0 |
| Amount financed | $0 |
Loan balance over time
Amortization schedule (yearly totals)
| Year | Principal Paid | Interest Paid | Ending Balance |
|---|
Current South Dakota Average Auto Loan Rates
Today's MonitorBankRates South Dakota averages first, then the lowest verified new and used offers from lenders serving South Dakota. Click any APR to run it through the calculator.
Auto Loan Offers in South Dakota and the Payment on a $35,000 Car
Monthly payment on the example loan ($33,270 financed after $3,500 down, South Dakota tax and fees) at each lender's advertised APR and term, from rate sheets published by the lender and verified by MonitorBankRates.
- Service First Federal Credit UnionNew Vehicles (2023 & Newer) - 6-48 months Loan4.15% APR$615 a month over 60 months
- Interfaith Federal Credit UnionNew Autos, SUVs, Trucks, Vans4.50% APR$620 a month over 60 months
- Sentinel Federal Credit Union2023 and Newer Auto Loan4.85% APR$626 a month over 60 months
- East River Federal Credit UnionAuto Loans (2022 - 2020)4.90% APR$626 a month over 60 months
- HB TELCOVehicle Loans5.50% APR$635 a month over 60 months
Compare every new and used auto loan, local banks and credit unions first, on the South Dakota auto loan rates page.
View Your South Dakota Auto Loan Rate
Personalized auto loan offers from lenders serving South Dakota.
What a Car Loan Costs in South Dakota Right Now
| $35,000 new car, $3,500 down, South Dakota tax and fees: $33,270 financed at the MonitorBankRates South Dakota average of 7.38% | Monthly | Total interest |
|---|---|---|
| 36 months | $1,033 | $3,919 |
| 48 months | $803 | $5,251 |
| 60 months | $665 | $6,613 |
| 72 months | $573 | $8,005 |
| 84 months | $508 | $9,426 |
South Dakota sales tax adds $1,470 to a $35,000 car, which at 7.38% over 60 months is about $29 of the monthly payment. Because South Dakota taxes the price after the trade in, trading in a $10,000 car at the dealer saves $420 in tax compared with selling it privately. The South Dakota average APR of 7.38% is above the U.S. average of 5.88%. Add the average South Dakota car insurance premium of $85 a month and the car costs about $750 a month to keep on the road before fuel and maintenance, which is 12.0% of the South Dakota median household income of $75,081. Rates change daily; every figure on this page is recalculated when it loads from the current MonitorBankRates South Dakota average.
Car Payments by Price in South Dakota
10% down, South Dakota sales tax of 4.20% and $300 in fees financed, 60 months at the MonitorBankRates South Dakota averages for new (7.38%) and used (9.11%) cars.
| Price | Down | South Dakota tax | Amount financed | New car payment | Used car payment |
|---|---|---|---|---|---|
| $15,000 | $1,500 | $630 | $14,430 | $288 | $300 |
| $25,000 | $2,500 | $1,050 | $23,850 | $477 | $496 |
| $35,000 | $3,500 | $1,470 | $33,270 | $665 | $692 |
| $45,000 | $4,500 | $1,890 | $42,690 | $853 | $888 |
| $60,000 | $6,000 | $2,520 | $56,820 | $1,135 | $1,182 |
Buying a Car in South Dakota: Tax, Fees and Insurance
Sales tax. Motor vehicle excise tax of 4.2%. Dealers add the tax to the amount financed unless you pay it at signing, so it costs interest for the life of the loan.
Trade in. In South Dakota the trade in value is subtracted before tax is figured, so a $10,000 trade in saves $420 in tax on top of lowering the loan.
Fees. Title, registration and plate fees are set by the South Dakota motor vehicle agency and vary by vehicle; dealer documentation fees are set by the dealer and run from about $100 to more than $800 depending on the state. The calculator uses $300 as a placeholder; replace it with the figures on your buyer's order.
Insurance. The average South Dakota car insurance premium is about $1,023 a year, or $85 a month, according to the NAIC, compared with about $1,258 nationally. Lenders require full coverage on a financed car, so budget for it alongside the payment. Compare carriers on the South Dakota car insurance page.
How to Use the South Dakota Auto Loan Calculator
- Start from the South Dakota defaults
The APR is today's MonitorBankRates South Dakota average, the sales tax is the South Dakota vehicle rate and the insurance line is the state average. Switch to used with one click.
- Enter the deal
Type the negotiated price, your down payment and trade in, and the fees from the buyer's order. Add your local tax rate if your county or city charges more than the state rate.
- Click a verified lender APR
The panel lists the lowest current new and used offers from lenders serving South Dakota. One click applies that APR and term.
- Read the full monthly cost
The large figure is the loan payment. Payment plus insurance shows what the car costs each month to keep on the road.
Frequently Asked Questions About Car Loans in South Dakota
What is the average auto loan rate in South Dakota today?
The MonitorBankRates South Dakota average new auto loan APR is 7.38% as of September 24, 2026, and the average used auto loan APR is 9.11%, computed every day from rates published by banks and credit unions lending in South Dakota. Individual lenders currently advertise APRs from 4.15% to 5.50% for borrowers with strong credit; compare offers on the South Dakota auto loan rates page.
How much is the car payment on a $35,000 car in South Dakota?
With $3,500 down, South Dakota sales tax of 4.20% and $300 in fees, the amount financed is $33,270. At the MonitorBankRates South Dakota average new auto loan APR of 7.38% that is about $665 a month over 60 months, $803 over 48 months, or $573 over 72 months.
What is the sales tax on a car in South Dakota?
Motor vehicle excise tax of 4.2%. On a $35,000 car the state rate of 4.20% comes to $1,470. The trade in value is subtracted before tax in South Dakota.
Does a trade in reduce sales tax in South Dakota?
Yes. South Dakota charges sales tax on the purchase price minus the trade in, so a $10,000 trade in saves $420 in tax at the 4.20% state rate in addition to lowering the loan.
How much is car insurance in South Dakota?
The NAIC average car insurance premium in South Dakota is about $1,023 a year, or $85 a month, compared with about $1,258 nationally. Full coverage is required on a financed car, so the calculator adds the premium to the payment: about $750 a month for the example car.
What loan term should I choose?
The shortest term whose payment fits. On the $33,270 example at 7.38%, 48 months costs $803 a month, 60 months $665, and 84 months $508. The 84 month loan pays about $2,813 more interest than the 60 month loan and leaves you owing more than the car is worth for years.
How much should I put down on a car in South Dakota?
At least 10% on a used car and 20% on a new one is the usual guidance. Twenty percent down on the $35,000 example, $7,000, cuts the payment by about $70 a month and reduces the time you owe more than the car is worth.
Auto Loan Calculators for Other States
Each state page starts from that state's MonitorBankRates average APR, vehicle sales tax rate and average car insurance cost. The national auto loan calculator compares the payment on the same car in every state.
