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State rules

South Dakota auto loan rules

South Dakota has 309 Census places covered on AutoLoanable, with a combined estimated population of 663,824. Vehicle financing in South Dakota is governed by state law — the interest-rate caps, title-lending rules, sales-finance licensing and the regulator that oversees them. The sourced figures below apply to every car loan made to a borrower in the state.

By the AutoLoanable Editorial Team · Last updated 2026-09-17

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36% cap state usury cap
4.2% statewide state vehicle sales tax
Permitted vehicle title loans
South Dakota Division of… state regulator

Key rules for car buyers in South Dakota

RuleDetailSource
Maximum legal interest rate (usury cap) No general maximum/usury restriction when the rate is set by written agreement; specific caps elsewhere in the code apply (e.g., 36% for licensed money lenders).
Source says: "no maximum interest rate or charge, or usury rate restriction... if they establish the interest rate or charge by written agreement" (SDCL 54-3-1.1).		 South Dakota Legislature (South Dakota Codified Laws)
as of 2026-09-17
Vehicle title loan status Title loans are made by licensed money lenders; finance charges, including all ancillary product or service charges, are capped at 36% per year.
Source says: "no licensee may contract for or receive finance charges pursuant to a loan in excess of an annual rate of thirty-six percent, including all charges for any ancillary product or service" License category: Money lender license (South Dakota Division of Banking).		 South Dakota Legislature — SDCL § 54-4-44
as of 2026-09-17
Sales finance / installment lender licensing Money Lender license (SDCL ch. 54-4) required for anyone lending money or creating/holding/purchasing retail installment contracts; payday and title lenders are licensed as money lenders.
Source says: "to be a Money Lender and subject to the licensing requirements of South Dakota Codified Laws (SDCL) Chapter 54-4"; "Payday and title lenders are also licensed as Money Lenders under SDCL Chapter 54-4." No separate motor-vehicle retail installment sales act — former SDCL ch. 54-7 (Motor Vehicle Retail Installment Sales) repealed in 1998; retail installment contracts are regulated under the Money Lending Licenses chapter (SDCL ch. 54-4 (esp. § 54-4-36(2)); former SDCL ch. 54-7 repealed by SL 1998, ch. 280).		 South Dakota Division of Banking (Department of Labor and Regulation)
as of 2026-09-17
State lending regulator South Dakota Division of Banking (Department of Labor and Regulation)
Source says: "The Division of Banking is charged with the regulation and supervision of state chartered and licensed financial institutions."		 South Dakota Division of Banking (Department of Labor and Regulation)
as of 2026-09-17
Sales tax on vehicle purchases 4.2% state rate; municipal rates additional
Source says: "The state sales and use tax rate is 4.2%."		 South Dakota Department of Revenue — Sales & Use Tax
as of 2026-09-17

How to use these rules

  1. Check the ceiling before you compare offers

    If a quoted APR looks extreme, compare it against the South Dakota cap above — and note that a specific statutory exemption can apply to a particular product.

  2. Verify the lender is licensed

    Use the regulator named in the table to confirm the lender or sales-finance company may legally serve borrowers in the state.

  3. Know what is secured against your car

    A vehicle title loan is secured by the car itself. If the state permits it, understand the repossession terms before you sign anything.

  4. Budget for tax and fees separately

    Sales tax and title fees are financed along with the car, so they raise the amount you borrow — and therefore the interest you pay on them.

Cities in South Dakota

We cover 309 Census places in South Dakota.

Frequently asked questions

What interest rate can a lender charge on a car loan in South Dakota?
It depends on the product and the statute that governs it. The sourced table on this page lists South Dakota's usury cap, its motor-vehicle sales-finance rules and the licensing requirements, each with its publisher and a link to the primary source.
Are title loans legal in South Dakota?
Vehicle title lending is regulated state by state; some states permit it under a licensed lender, some cap it, and some prohibit it outright. See the sourced figure on this page for the current position, and confirm it with the state regulator before you sign anything.
Do I need a license to finance a car in South Dakota?
Most consumer lenders and motor-vehicle sales-finance companies must be licensed by the state regulator named on this page. You can verify a lender's licence with that regulator before you sign anything.

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