Free South Dakota Vehicle Bill of Sale
A South Dakota vehicle bill of sale documents the private sale of a car, truck, motorcycle, or trailer and gives the county treasurer the price needed to calculate the 4% Motor Vehicle Excise Tax. South Dakota publishes its own bill of sale (Form MV-016), but a custom document works just as well as long as it includes the buyer and seller names and addresses, the date of sale, the purchase price, the VIN, the year/make/model, and both signatures. SD has no state income tax, so vehicle excise tax is a serious revenue stream — write the real number. The state gives you 45 days to get to the county treasurer; after that the late fees start.
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South Dakota Vehicle Bill of Sale — What You Need to Know
Sales Tax Details
South Dakota charges a 4% Motor Vehicle Excise Tax (MVET) on the purchase price — this is NOT the general state sales tax (which is 4.2% on most goods). MVET is a dedicated vehicle tax collected by the county treasurer at the time of titling, and it goes straight into the state highway fund. South Dakota has no state income tax, so vehicle excise is a major revenue stream and the state takes underreported purchase prices seriously. The bill of sale price is what gets taxed, and the county treasurer can challenge a price that looks artificially low compared to NADA values.
Exemption: Transfers between immediate family members are exempt from the 4% MVET. South Dakota defines immediate family broadly: spouse, parent, child, sibling, grandparent, and grandchild. Step and in-law relationships also qualify. The relationship must be documented on the title application — write "gift to son" or "transfer between siblings" on the MV-008. Inheritance transfers, court-ordered divorce transfers, and transfers to/from a revocable trust where the grantor is the same person are also exempt.
Inspection Requirements
South Dakota does not require any state safety inspection or emissions test for passenger vehicles — there is no annual sticker, no smog check, no VIN verification at a state station. The county treasurer will check the VIN on the title against the application but will not physically inspect the vehicle in most cases. The exception is rebuilt or salvage vehicles, which require a damage disclosure and Highway Patrol inspection before a rebuilt title is issued. Out-of-state vehicles being titled in SD for the first time may need a VIN verification, but it can be done by any law enforcement officer or licensed dealer.
Registration
Registration for this vehicle type is handled by County treasurer's office (on behalf of SD DOR MVD) — not the same agency that handles cars in South Dakota. Plan for separate filings.
South Dakota Vehicle Sale — Step-by-Step Checklist
- Buyer and seller full legal names and South Dakota addresses (or out-of-state address for buyer)
- Date of sale — starts the 45-day clock to title and register at the county treasurer
- Vehicle year, make, model, body style, and color
- Complete 17-character VIN (verify against the door jamb sticker, not just the title)
- Odometer reading at time of sale — required disclosure for vehicles under 20 model years old
- Purchase price in U.S. dollars (this is what the 4% MVET is calculated on)
- Damage disclosure for vehicles under 9 model years old — South Dakota is strict on this
- "As-is" language unless a written warranty is being given (private sales are not covered by lemon law)
- Both signatures dated the same day as the sale; notarization is optional but free at most banks
Common Pitfalls
- Writing $1 or "gift" when money actually changed hands. The county treasurer compares your price to NADA book value, and when it's suspiciously low they'll assess MVET on the book value instead. If you're actually gifting between immediate family, claim the exemption properly on MV-008 — don't fake a low price.
- Missing the 45-day titling deadline. South Dakota charges interest on unpaid MVET plus a $1/week late fee (max $50). Out-of-state buyers who drag their feet on getting back to a county treasurer hit this constantly.
- Forgetting the damage disclosure for vehicles under 9 model years old. SD requires it separately from the bill of sale, and the title application gets rejected without it. If the car was ever in a major wreck, disclose it — buyers can sue under SD consumer protection law.
- Going to a "DMV office" that doesn't exist. South Dakota processes everything through county treasurers — there's one in each of the 66 counties. Find yours before you drive 40 miles to a town that doesn't handle titles.
- Leaving plates on the vehicle. South Dakota plates stay with the seller, not the car. The buyer needs a 30-day temporary permit from the county treasurer or the dealer to drive it home legally.
Pro Tip
Print two copies, sign both, hand one to the buyer. The buyer takes the title, the bill of sale, and Form MV-008 to their county treasurer within 45 days, pays the 4% MVET, and walks out with a new title and plates. South Dakota keeps the process simple — no inspection, no DMV bureaucracy, no income tax — but the 45-day deadline and the family exemption rules are where people stumble.