South Dakota Car Accident Settlement Calculator

In South Dakota, motor vehicle claims turn on whether your negligence was slight compared to the other driver's. Unlike percentage-bar states, no fixed number settles the question — a jury weighs the two sides' conduct against each other. If your fault is judged more than slight, recovery is barred; if slight, your award is reduced proportionally. South Dakota allows recovery only if your negligence was slight compared to the defendant's; damages are then reduced in proportion (SDCL 20-9-2).

South Dakota gives you 3 years from the date of the incident to file a lawsuit, which is in line with the national average of 2.7 years. This is a standard timeframe, but acting sooner preserves evidence and strengthens your position. South Dakota applies a discovery rule, meaning the clock may start when you discover (or should have discovered) the injury rather than when the incident occurred.

South Dakota requires all drivers to carry minimum liability insurance of $25K per person / $50K per accident in bodily injury coverage and $25K in property damage coverage (commonly written as 25/50/25). These minimums are below the national average, meaning many drivers in South Dakota may carry only enough insurance to cover a fraction of the costs from a serious accident. South Dakota also requires uninsured motorist (UM) coverage of at least $25K per person, which protects you if the at-fault driver has no insurance.

South Dakota imposes a 180-day notice requirement for tort claims against government entities. If a government-owned vehicle caused your accident or a poorly maintained government road contributed to it, you must file a formal notice of claim well before the standard statute of limitations expires. Failure to provide timely notice is one of the most common reasons government tort claims are dismissed.

No South Dakota statute, high court decision or insurance regulator statement settles whether diminished value, the resale value a properly repaired car loses because of its accident history, can be added to the cost of repairs in a claim against the at-fault driver. Your own collision coverage is not required to pay it under South Dakota authority. South Dakota's Supreme Court held in Culhane v. Western National Mutual Insurance Co. that standard collision coverage promising to repair or replace does not owe the value a car loses once it has been properly repaired. The diminished value guide in the related reading below carries the rule for every state and how to document the loss.