South Dakota Personal Lines Law & Coverage Rules
This chapter covers the South Dakota-specific personal lines rules that sit on top of the shared national property & casualty fundamentals: who regulates insurance in South Dakota, the minimum auto liability limits, required uninsured/underinsured motorist coverage, the at-fault system, and the notice rules governing cancellation and nonrenewal. Figures below were checked against South Dakota Codified Law and the Division of Insurance this session; always confirm current numbers before advising a client.
The South Dakota Division of Insurance
Insurance in South Dakota is regulated by the Division of Insurance, part of the Department of Labor and Regulation. The division licenses producers and companies, reviews policy forms and rates, investigates complaints, and enforces the insurance code. There is no federal insurance department. Official site: https://dlr.sd.gov/insurance.
Minimum Auto Liability Limits (25/50/25)
Under South Dakota Codified Law 32-35-70, a personal auto policy must carry at least $25,000 bodily injury per person, $50,000 bodily injury per accident, and $25,000 property damage (written 25/50/25). These are minimums — producers should explain that higher limits better protect the insured's assets. Verify current figures with the South Dakota Division of Insurance.
Uninsured and Underinsured Motorist Coverage
South Dakota requires uninsured motorist (UM) coverage on personal auto policies, generally at minimum limits matching the 25/50 liability figures, and underinsured motorist (UIM) coverage must be offered. UM/UIM fills the gap when the at-fault driver has no or insufficient coverage. Because the exact structure and any deductibles can change, confirm the current UM/UIM requirement with the South Dakota Division of Insurance.
At-Fault System, Cancellation and Nonrenewal
South Dakota is a traditional at-fault (tort) state: the driver who causes a crash is liable for the other party's injuries and property damage — it is not a no-fault/PIP state. Separately, state law limits the reasons an insurer may cancel a personal auto or homeowners policy mid-term (for example nonpayment or material misrepresentation) and requires advance written notice of cancellation or nonrenewal. The exact number of days depends on the reason and line — verify current South Dakota notice periods with the Division of Insurance rather than memorizing a single number.