What to do with South Dakota plates after moving to Connecticut
The answer can be return, cancel, destroy, recycle, or keep. Follow the reviewed South Dakota instruction only after the Connecticut registration and insurance handoff are safe.
Complete the replacement record
Transfer the out-of-state registration within 90 days. Connecticut allows a combined appointment when the license and vehicle transactions are both ready.
Bring proof of insurance that meets Connecticut's minimum requirements for the registration transaction.
Update the South Dakota record and keep the old plates
After the destination registration is active, update the address in South Dakota's vehicle record through the online portal or your county treasurer. Remove and retain the South Dakota plates; the state describes them as staying with the owner. Keep the address-update confirmation with the new registration.
Open the official South Dakota instructionReviewed 2026-07-31- 1. Activate acceptable destination coverage
Confirm the effective date with the new insurer.
- 2. Register in Connecticut
Keep the issued registration or official receipt.
- 3. Complete the South Dakota plate action
Keep the surrender, cancellation, mailing, destruction, or retention record the state provides.
- 4. End or rewrite the old policy
Ask the insurer to use dates that do not create an uncovered active registration.
Sources for this closeout sequence
- South Dakota DOR: Motor vehicle records and platesChecked 2026-07-31 ↗Exit closeout
- Connecticut DMV: Transfer an out-of-state licenseChecked 2026-07-31 ↗LicenseRegistration
- Connecticut DMV: Register an out-of-state vehicleChecked 2026-07-31 ↗RegistrationInsuranceInspection / VINTitle / lienTax / fees