South Dakota
South Dakota Car Accident Laws: Fault, Insurance, and Your Claim
South Dakota is an at-fault (tort) state that follows the distinctive "slight-gross" comparative negligence rule (): the at-fault driver's liability insurer pays, and you can recover damages only if your own negligence was "slight" compared to the other driver's "gross" negligence, with your award reduced by your percentage of fault.
Is South Dakota a no-fault or at-fault state?
South Dakota is a traditional at-fault (tort) state. It is not among the 12 states that require no-fault personal-injury protection (PIP) coverage, and there is no PIP-first system here. After a crash, you do not file your initial injury claim with your own insurer regardless of fault. Instead, the injured party pursues the at-fault driver's liability insurer directly, or files a lawsuit, to recover for medical expenses, lost wages, and pain and suffering. Because there is no no-fault threshold to satisfy, you can pursue a pain-and-suffering claim from the very beginning of your case, even for minor injuries.
South Dakota also has no mandatory PIP coverage. MedPay is available as an optional add-on under a South Dakota auto policy, and some drivers carry it to cover immediate medical bills without waiting for a fault dispute to resolve. But MedPay is not required, and most South Dakota policies do not include it unless the driver requests it. If you are injured by an uninsured driver, or if the at-fault driver's limits are insufficient, South Dakota's mandatory UM/UIM coverages (discussed below) become especially important.
How fault is shared: South Dakota's negligence rule
South Dakota applies one of the rarest negligence rules in the country: the "slight-gross" comparative negligence rule, codified at . Most states use either pure comparative fault (where any plaintiff can recover) or a modified comparative rule with a 50% or 51% threshold. South Dakota's slight-gross rule operates on a fundamentally different framework.
Under the slight-gross rule, a plaintiff can recover damages only if their own negligence was "slight" in comparison to the defendant's negligence, which must have been "gross." The court or jury does not simply assign percentage points to each party and check whether the plaintiff is above or below 50%. Instead, the analysis is qualitative: was the plaintiff's fault minor and relatively inconsequential, while the defendant's fault was extreme or reckless? If the plaintiff's negligence was more than slight relative to the defendant's fault, recovery is completely barred.
When the plaintiff does qualify as only slightly at fault, the award is reduced proportionally. So if a jury finds a plaintiff's damages total $100,000 but the plaintiff was 15% at fault, the plaintiff recovers $85,000. However, the threshold question, whether the plaintiff's fault crosses from "slight" into something greater, is litigated first. This makes South Dakota cases highly fact-intensive and the characterization of each driver's conduct critically important.
The slight-gross standard traces to South Dakota's long common-law history and is preserved in the current statute at SDCL 20-9-2. In practice, South Dakota courts have struggled to define the precise boundary between "slight" and "gross" as applied to specific facts, which creates meaningful uncertainty in contested cases. The bottom line for injured drivers: even if you made some error leading up to the crash, you may still recover if a court determines your mistake was slight compared to the other driver's conduct, but you should expect that characterization to be disputed.
Minimum car insurance in South Dakota
South Dakota law requires every registered motor vehicle to carry minimum liability coverage of 25/50/25, established by . That means $25,000 per person and $50,000 per accident for bodily injury, plus $25,000 per accident for property damage. These minimums protect others when you are the at-fault driver. The limits are not large by the standards of serious injury cases, meaning they can be exhausted quickly when injuries are significant.
Beyond liability coverage, South Dakota stands out for its mandatory UM/UIM requirement. Under and 58-11-9.4, every automobile policy must include both uninsured motorist (UM) coverage and underinsured motorist (UIM) coverage. These coverages must equal the policy's bodily-injury limits and cannot be rejected by the insured, capped at $100,000 per person and $300,000 per accident. UM applies when the at-fault driver has no insurance at all. UIM applies when the at-fault driver has some insurance but not enough to cover your damages. South Dakota's non-waivable UM/UIM requirement provides a meaningful safety net that many states do not offer.
There is no mandatory PIP or no-fault medical coverage in South Dakota. A driver who wants medical-expense coverage without waiting for a fault determination can add optional MedPay to their policy, but it is not required.
How long you have to file: the statute of limitations
South Dakota gives injured car accident victims 3 years from the date of the accident to file a personal-injury lawsuit, under (3). Property-damage claims arising from the same crash are governed by a separate, longer deadline: (4) gives you 6 years to sue for the taking, detaining, or injuring of personal property, including vehicle damage. Missing the filing deadline almost always results in permanent loss of your legal claim, regardless of how strong the case would otherwise be.
Three years can feel like a long window, but it passes quickly when injuries require extended treatment, disputes over causation arise, or insurance negotiations drag on. Evidence fades, witnesses move, and critical documents may be discarded. Filing promptly after settlement negotiations break down is far preferable to discovering the deadline has lapsed. If the crash involved a South Dakota government vehicle or occurred on government property, special pre-suit notice requirements under the South Dakota Tort Claims Act may impose significantly shorter deadlines. An attorney can identify whether any shortened government-claim window applies in your situation.
For more on filing deadlines for other civil claims in South Dakota, see our South Dakota statute of limitations page.
What a South Dakota car accident claim is worth
The value of a South Dakota car accident claim depends on your injuries, how fault is allocated under the slight-gross rule, and the insurance coverage available. Economic damages cover the quantifiable losses tied directly to the crash: past and future medical expenses, lost wages, diminished earning capacity, and out-of-pocket costs like transportation to medical appointments or vehicle repair. Non-economic damages cover the harder-to-measure harm: pain and suffering, emotional distress, loss of enjoyment of life, and loss of consortium for a spouse or family member.
Because South Dakota is an at-fault state with no no-fault threshold, both economic and non-economic damages are available from the outset of the claim. There is no requirement to satisfy a verbal or monetary threshold before pursuing pain and suffering. The slight-gross comparative fault rule then determines how fault reduces your award. If your negligence is deemed more than slight relative to the defendant's, you recover nothing; if it is determined to be slight, your damages are reduced by your fault percentage.
As a practical matter, insurance limits define the realistic ceiling for most claims. The at-fault driver's minimum bodily-injury limits of $25,000 per person ($50,000 per accident) can be exhausted by moderate injuries. South Dakota's mandatory UIM coverage (at matching limits, capped at $100,000/$300,000) becomes the next source of recovery when the at-fault driver's policy is insufficient.
Use our South Dakota car accident settlement calculator to model how comparative fault, injury severity, and insurance limits interact in your specific case.
What to do after a car accident in South Dakota
Taking the right steps immediately after a South Dakota crash protects your health, your legal rights, and your ability to recover full compensation.
Stop, secure the scene, and call 911. South Dakota law requires drivers involved in a crash resulting in injury, death, or property damage above a threshold to stop immediately, render reasonable aid, and report the accident to law enforcement. An official police report creates an independent record of the crash facts, the parties involved, witnesses, and visible conditions. Insurance adjusters and courts rely on police reports, and having one strengthens your case.
Seek medical care promptly, even if you feel fine. Soft-tissue injuries, concussions, and internal injuries frequently worsen or become evident in the hours or days following a crash. A prompt medical evaluation creates a contemporaneous record connecting your injuries to the collision. Because South Dakota is an at-fault state with no mandatory PIP coverage, the medical documentation you create in the days after the crash may be the foundation of your entire claim.
Document everything at the scene. Photograph the vehicles, road conditions, weather, tire marks, traffic signs, and any visible injuries. Collect the other driver's name, address, driver's license number, and insurance information. Note the names and contact information of any witnesses. Preserve dashcam footage and request that nearby businesses retain any surveillance footage before automatic deletion cycles erase it.
Track all accident-related expenses and losses. Keep records of every medical appointment, prescription, and day of work missed. South Dakota's at-fault system means these documented economic losses form the core of your damages claim. A thorough paper trail also helps document the severity of your injury when negotiating over non-economic damages.
Do not give a recorded statement to the other driver's insurer without consulting an attorney. South Dakota's slight-gross negligence rule makes the characterization of each driver's conduct critically important. Opposing insurance adjusters are trained to ask questions that minimize the at-fault driver's culpability while highlighting any mistakes you made. Even a casual acknowledgment that you were "not paying full attention" can be used to push your fault above the slight threshold and bar your entire recovery. An attorney consultation before accepting any settlement offer is strongly advisable, especially given how the slight-gross standard turns on the relative quality of each party's conduct.
This article is general legal information, not legal advice. Car accident law varies by state and changes, and settlement values depend on the specific facts. For advice about a specific crash, consult a licensed attorney in South Dakota.
Related pages:
- South Dakota Car Accident Settlement Calculator
- South Dakota Hit-and-Run Laws
- Car Accident Laws by State: Hub
- South Dakota Statute of Limitations
More South Dakota Laws
Frequently Asked Questions
Is South Dakota a no-fault state?
No. South Dakota is not a no-fault state. It is a traditional at-fault (tort) state, and there is no mandatory PIP (personal injury protection) coverage. After a crash, you pursue the at-fault driver's liability insurer for your medical bills, lost wages, and pain and suffering. There is no no-fault threshold you must clear before bringing a pain-and-suffering claim.
Is South Dakota an at-fault state?
Yes. South Dakota is an at-fault (tort) state. The at-fault driver (and their liability insurer) is responsible for compensating injured parties for economic and non-economic damages. There is no PIP-first system, no serious-injury threshold, and no restriction on immediately pursuing a full tort claim against the at-fault driver.
What is the statute of limitations for a car accident in South Dakota?
You have 3 years from the date of the accident to file a personal-injury lawsuit in South Dakota, under SDCL 15-2-14(3). Property-damage claims carry a longer 6-year period under SDCL 15-2-13(4), which covers actions for injuring personal property. Missing this deadline typically bars the claim permanently. If the crash involved a government entity, shorter pre-suit notice deadlines may apply.
Can I still recover if I was partly at fault in South Dakota?
It depends on how much at fault you were. South Dakota uses the slight-gross comparative negligence rule (SDCL 20-9-2). You can recover only if your negligence was slight compared to the other driver's gross negligence. If a court determines your fault was more than slight, you are barred from recovering anything. If your fault was slight, your award is reduced by your percentage of fault.
What is the slight-gross negligence rule in South Dakota?
The slight-gross rule (SDCL 20-9-2) is South Dakota's unique approach to sharing fault in car accident cases. Unlike the percentage-based comparative fault used in most states, South Dakota asks whether the plaintiff's negligence was slight and the defendant's was gross. If yes, the plaintiff can recover (with a reduction for their share of fault). If the plaintiff's fault was more than slight relative to the defendant's, recovery is completely barred. The threshold is qualitative, not a fixed percentage, making fault characterization highly contested.
What are the minimum car insurance requirements in South Dakota?
South Dakota requires: (1) liability coverage of 25/50/25 ($25,000 bodily injury per person, $50,000 per accident, $25,000 property damage) under SDCL 32-35-70; and (2) mandatory UM and UIM coverages equal to your bodily-injury limits, capped at $100,000/$300,000, which cannot be rejected under SDCL 58-11-9 and 58-11-9.4. There is no mandatory PIP coverage in South Dakota.
How much is my South Dakota car accident claim worth?
The value depends on your injury severity, how fault is allocated under South Dakota's slight-gross rule, and the insurance limits available. Economic damages (medical expenses, lost wages, future care) and non-economic damages (pain and suffering, emotional distress) are both available with no no-fault threshold. Your recovery is reduced by your fault percentage if your fault was slight, or barred entirely if your fault was more than slight. Practically, the at-fault driver's policy limits and your mandatory UIM coverage cap the realistic recovery. Use our South Dakota car accident settlement calculator to estimate your situation.
Injured in South Dakota? Get a free case review from a personal-injury attorney
If someone else's negligence caused your injury, you may be owed compensation for medical bills, lost wages, and pain and suffering. Get a free, no-obligation review from a South Dakota personal-injury attorney. Most work on contingency, so there is no upfront cost.
Updates
Governing law re-checked for recent changes
Corrected the property-damage statute-of-limitations citation: SDCL 15-2-14 has no subdivision (4) and covers only personal injury; property-damage claims are governed by SDCL 15-2-13(4), a 6-year deadline, not the 3-year personal-injury period.
Governing law re-checked for recent changes
The Law Behind This Article
This article rests on 6 statutory provisions held in our own legal record, each retrieved from the official source. Tap a section to read the operative text.
South Dakota Codified Laws, Chapter 15-2: LIMITATION OF ACTIONS GENERALLY
§ 15-2-13Contract obligation or liability--Statutory liability--Trespass--Personal property--Injury to noncontract rights--Fraud--Setting aside corporate instrument.In forcecited in 3 of our articles
Except where, in special cases, a different limitation is prescribed by statute, the following civil actions other than for the recovery of real property can be commenced only within six years after the cause of action shall have accrued: (1) An action upon a contract, obligation, or liability, express or implied, excepting those mentioned in §§ 15-2-6 to 15-2-8, inclusive, and subdivisions 15-2-15(3) and (4); (2) An action upon a liability created by statute other than a penalty or forfeiture; excepting those mentioned in subdivisions 15-2-15(3) and (4); (3) An action for trespass upon real property; (4) An action for taking, detaining, or injuring any goods or chattels, including actions for specific recovery of personal property; (5) An action for criminal conversation or for any other injury to the rights of another not arising on contract and not otherwise specifically enumerated in §§ 15-2-6 to 15-2-17, inclusive; (6) An action for relief on the ground of fraud, in cases which heretofore were solely cognizable by the court of chancery; (7) An action to set aside any instrument executed in the name of a corporation on the ground that the corporate charter had expired…
Official text (excerpt) · as of 2026-07-30 · Read the full section at sdlegislature.gov
Cited in 98 court opinionsMost recently applied by a court: 2025
Leading cases: Morgan v. Baldwin (South Dakota Supreme Court 1990, 450 N.W.2d 783) · Strassburg v. Citizens State Bank (South Dakota Supreme Court 1998, 581 N.W.2d 510) · Green v. Siegel, Barnett & Schutz (South Dakota Supreme Court 1996, 557 N.W.2d 396)
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
Also relied on in: South Dakota Statute of Limitations: Filing Deadlines by Case Type, South Dakota Debt Collection Laws: The 20% Garnishment Cap and 120-Day Lien
§ 15-2-14Action against sheriff, coroner, or constable--Action for statutory penalty or forfeiture--Action for personal injury.In forcecited in 6 of our articles
Except where, in special cases, a different limitation is prescribed by statute, the following civil actions other than for the recovery of real property can be commenced only within three years after the cause of action shall have accrued: (1) An action against a sheriff, coroner, or constable upon a liability incurred by the doing of an act in his official capacity and in virtue of his office, or by the omission of an official duty, including the nonpayment of money collected upon an execution. But this subdivision shall not apply to an action for an escape; (2) An action upon a statute for a penalty or forfeiture where the action is given to the party aggrieved, or to such party and the state except where the statute imposing it prescribes a different limitation; (3) An action for personal injury.
Official text (excerpt) · as of 2026-07-30 · Read the full section at sdlegislature.gov
Cited in 60 court opinionsMost recently applied by a court: 2024
Leading cases: Cunningham v. Yankton Clinic, P. A. (South Dakota Supreme Court 1978, 262 N.W.2d 508) · Pitt-Hart v. Sanford USD Medical Center (South Dakota Supreme Court 2016, 878 N.W.2d 406) · Stratmeyer v. Stratmeyer (South Dakota Supreme Court 1997, 567 N.W.2d 220)
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
Also relied on in: South Dakota Recording Laws (2026): One-Party Consent Rules, South Dakota Dog Bite Laws: Liability and Victim Rights, South Dakota Motorcycle Accident Laws (2026): Deadlines
South Dakota Codified Laws, Chapter 20-9: LIABILITY FOR TORTS
§ 20-9-2Comparative negligence--Reduction of damages.In forcecited in 8 of our articles
In all actions brought to recover damages for injuries to a person or to that person's property caused by the negligence of another, the fact that the plaintiff may have been guilty of contributory negligence does not bar a recovery when the contributory negligence of the plaintiff was slight in comparison with the negligence of the defendant, but in such case, the damages shall be reduced in proportion to the amount of plaintiff's contributory negligence. Notwithstanding Woods vs. City of Crooks, 559 N.W.2d 558 (SD 1997), the determination of whether the contributory negligence of the plaintiff was slight in comparison with the negligence of the defendant shall be made without disclosing any determination of percentage of plaintiff's fault by special interrogatory.
Official text (excerpt) · as of 2026-07-30 · Read the full section at sdlegislature.gov
Cited in 54 court opinionsMost recently applied by a court: 2026
Leading cases: Isaac v. State Farm Mutual Automobile Insurance Co. (South Dakota Supreme Court 1994, 522 N.W.2d 752) · Chambers v. Dakotah Charter, Inc. (South Dakota Supreme Court 1992, 488 N.W.2d 63) · Westover v. East River Electric Power Cooperative, Inc. (South Dakota Supreme Court 1992, 488 N.W.2d 892)
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
Also relied on in: South Dakota Hit and Run Laws: Penalties and What to Do, Medical Malpractice Laws in South Dakota (2026): Caps, South Dakota Slip and Fall Laws: Proving Premises Liability
South Dakota Codified Laws, Chapter 32-35: FINANCIAL RESPONSIBILITY OF VEHICLE OWNERS AND OPERATORS
§ 32-35-70Conditions of owner's policy--Coverage and amount--Filing and form requirements--Date of compliance.In force
An owner's policy of liability insurance referred to in § 32-35-68 shall insure the person named therein and any other person as insured, using any insured vehicle or vehicles with the express or implied permission of the named insured, against loss from the liability imposed by law for damages arising out of the ownership, maintenance, or use of the vehicle or vehicles within the United States of America or the Dominion of Canada, subject to limits exclusive of interests and costs, with respect to each insured vehicle, as follows: twenty-five thousand dollars because of bodily injury to or death of one person in any one accident and, subject to the limit for one person, fifty thousand dollars because of bodily injury to or death of two or more persons in any one accident, and twenty-five thousand dollars because of injury to or destruction of property of others in any one accident. If the policy complies with the filing and form requirements of Title 58 and has been approved by the Division of Insurance, the driver and owner has complied with this chapter.
Official text (excerpt) · as of 2026-07-30 · Read the full section at sdlegislature.gov
Cited in 36 court opinionsMost recently applied by a court: 2026
Leading cases: De Smet Insurance Co. of South Dakota v. Gibson (South Dakota Supreme Court 1996, 552 N.W.2d 98) · Cimarron Insurance Co. v. Croyle (South Dakota Supreme Court 1992, 479 N.W.2d 881) · Novak v. State Farm Mutual Automobile Insurance Co. (South Dakota Supreme Court 1980, 293 N.W.2d 452)
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
South Dakota Codified Laws, Chapter 58-11: FORM AND CONTENTS OF INSURANCE POLICIES
§ 58-11-9Motor vehicle insurance--Uninsured motorist and hit-and-run coverage--Amount of coverage--Uninsured motorist coverage not required for government owned vehicles.In forcecited in 2 of our articles
No policy insuring against loss resulting from liability imposed by law for bodily injury or death suffered by any person arising out of the ownership, maintenance, or use of a motor vehicle may be delivered or issued for delivery in this state with respect to any motor vehicle registered or principally garaged in this state, except for snowmobiles, unless coverage is provided therein or supplemental thereto in limits for bodily injury or death equal to the coverage provided by such policy for bodily injury and death, for the protection of persons insured thereunder who are legally entitled to recover damages from owners or operators of uninsured motor vehicles and hit-and-run motor vehicles because of bodily injury, sickness, or disease, including death, resulting therefrom. However, the coverage required by this section may not exceed the limits of one hundred thousand dollars because of bodily injury to or death of one person in any one accident and, subject to the limit for one person, three hundred thousand dollars because of bodily injury to or death of two or more persons in any one accident, unless additional coverage is requested by the insured.
Official text (excerpt) · as of 2026-07-30 · Read the full section at sdlegislature.gov
Cited in 28 court opinionsMost recently applied by a court: 2025
Leading cases: Isaac v. State Farm Mutual Automobile Insurance Co. (South Dakota Supreme Court 1994, 522 N.W.2d 752) · Clark v. Regent Insurance Co. (South Dakota Supreme Court 1978, 270 N.W.2d 26) · Gloe v. Iowa Mutual Insurance Co. (South Dakota Supreme Court 2005, 694 N.W.2d 238)
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
§ 58-11-9.4Underinsured motorist coverage to be available with liability policies--Limitation of coverage--Exception.In force
No motor vehicle liability policy of insurance may be issued or delivered in this state with respect to any motor vehicle registered or principally garaged in this state, except for snowmobiles, unless underinsured motorist coverage is provided therein at a face amount equal to the bodily injury limits of the policy. However, the coverage required by this section may not exceed the limits of one hundred thousand dollars because of bodily injury to or death of one person in any one accident and, subject to the limit for one person, three hundred thousand dollars because of bodily injury to or death of two or more persons in any one accident, unless additional coverage is requested by the insured. Any policy insuring government owned vehicles may not be required to provide underinsured motorist coverage.
Official text (excerpt) · as of 2026-07-30 · Read the full section at sdlegislature.gov
Cited in 23 court opinionsMost recently applied by a court: 2025
Leading cases: Gloe v. Union Insurance Co. (South Dakota Supreme Court 2005, 694 N.W.2d 252) · Gloe v. Iowa Mutual Insurance Co. (South Dakota Supreme Court 2005, 694 N.W.2d 238) · De Smet Insurance Co. of South Dakota v. Pourier (South Dakota Supreme Court 2011, 802 N.W.2d 447)
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
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Sources and References
- SDCL 32-35-70 (minimum liability limits 25/50/25)(sdlegislature.gov).gov
- SDCL 58-11-9 (mandatory uninsured/hit-and-run motorist coverage)(sdlegislature.gov).gov
- SDCL 58-11-9.4 (mandatory underinsured motorist coverage)(sdlegislature.gov).gov
- SDCL 20-9-2 (slight/gross comparative negligence)(sdlegislature.gov).gov
- SDCL 15-2-14 (3-year personal-injury statute of limitations)(sdlegislature.gov).gov
- SDCL 15-2-13 - Six-year limitation for property/chattel damage claims(sdlegislature.gov).gov