Registering a Vehicle in South Dakota
South Dakota does not register vehicles at a state DMV office. Titles, plates, and registration certificates are issued by the county treasurer in each of the state's 66 counties, with statewide policy set by the South Dakota Department of Revenue - Motor Vehicle Division (SD DOR). New residents have 90 days to register a vehicle from another state - one of the most generous deadlines in the country.
What you need at the county treasurer
For a private-party purchase or a transfer from out of state, bring:
- The signed title from the seller (or out-of-state title with the assignment section completed).
- Form MV-608 - Application for Motor Vehicle Title and Registration.
- A bill of sale showing purchase price, date, and odometer reading.
- Proof of South Dakota auto insurance meeting the 25/50/25 + UM 25/50 minimum - see South Dakota car insurance.
- A photo ID (driver license, state ID, or U.S. passport).
- Form MV-005 - Seller's Report of Sale, if available from the seller.
- Form MV-016 - Damage Disclosure Statement, for vehicles less than 9 years old.
- Lien release if the previous title showed a lien.
Sales and excise taxes
South Dakota charges a 4.5% motor vehicle excise tax on the purchase price of every titled vehicle, separate from regular state and local sales tax. The excise tax is paid to the county treasurer at title transfer, and the dealer may collect and remit on behalf of the buyer. There are exemptions for spouse-to-spouse transfers, parent-to-child gifts, transfers between siblings, and inheritance. Trade-in values reduce the taxable purchase price when the trade is processed through a licensed dealer.
Title and registration fees
- Title fee: $10.
- Annual registration fee: roughly $60-$120 for a passenger car based on age and weight.
- Wheel tax: varies by county, typically $4 per wheel up to a per-vehicle cap.
- License plate fee: included in initial registration; replacement plates are $10.
- Lien filing fee: $10.
The 90-day deadline for new residents
If you have just moved to South Dakota, you have 90 days to title and register your vehicle. The clock starts the day you become a South Dakota resident - establishing a permanent address, registering to vote, or accepting employment. The 90-day window is meant to allow time to ship a vehicle, gather documents, and visit the county treasurer. Driving on out-of-state plates after the 90-day deadline can lead to citation under SDCL Title 32 and complications when you eventually do register.
How vehicle plates work
South Dakota's standard passenger plate uses the Mount Rushmore design with a county code letter or two-letter abbreviation in the upper-left corner. The code identifies your county of registration. If you move to a new county within South Dakota, you do not need new plates immediately, but at the next renewal the new county code will be issued. Vanity and specialty plates are available through SD DOR with additional fees.
Registration cycle
South Dakota registration runs on a birthday-based cycle. The vehicle's registration expires on the last day of the owner's birth month. For multiple vehicles owned by the same person, all registrations align to that birth month so there is one annual renewal trip. Commercial vehicles, fleet vehicles, and certain trailers run on different cycles. The county treasurer mails a renewal notice about 60 days ahead of expiration.
What's not required
South Dakota does not require an annual safety inspection or an emissions test for passenger vehicles. There is no smog program, no biennial brake check, and no headlight aim certification. Drivers are still responsible for keeping the vehicle roadworthy under SDCL § 32-17, and law enforcement can issue equipment citations for non-compliant vehicles, but there is no scheduled inspection visit before renewal.
Out-of-state purchase
If you bought the vehicle out of state, the county treasurer needs the out-of-state title properly assigned, a completed MV-608, the damage disclosure if applicable, and proof of payment of any sales tax already paid in the previous state. South Dakota credits sales tax paid in another state against the 4.5% excise tax up to the South Dakota tax amount, so you do not pay twice.