Average concussion / mild tbi settlement in South Dakota
Typical SD range (2026)
$18K – $100K
Severe cases can reach $850,000 or more. South Dakota settlements trend somewhat below the national average.
Concussions are classed as mild traumatic brain injuries, but their effects — memory problems, headaches, mood changes, sensitivity to light — can persist for months or years (post-concussion syndrome). Insurers underpay these claims because symptoms don't show on standard imaging; documentation is everything.
How a concussion / mild tbi claim actually works in South Dakota
South Dakota is the only state using the slight/gross negligence rule: you recover only if your own negligence was 'slight' compared to the defendant's 'gross' negligence, and even then your award is reduced proportionally.
Because 'slight' has no fixed percentage, South Dakota fault disputes are argued in comparisons rather than clean percentages, which gives juries far more discretion than in a numeric-bar state.
There is no PIP requirement; minimum liability coverage is $25,000 per person and $50,000 per accident.
South Dakota rules that shape your claim
Filing deadline
3 years
You generally have 3 years from the accident date to file a lawsuit in South Dakota.
Fault rule
Slight/gross negligence
South Dakota is the only state using the slight/gross rule: you recover only if your own negligence was 'slight' compared to the defendant's 'gross' negligence — and your award is still reduced proportionally.
Minimum liability coverage
$25K / $50K
Many South Dakota drivers carry only the minimum — a key reason to check your own underinsured-motorist coverage.
Uninsured motorist coverage
Required
Every South Dakota policy carries UM, so there is usually a second source of money when the at-fault driver has no insurance or too little of it.
Claim climate
Because 'slight' has no fixed percentage, South Dakota fault fights are argued in comparisons rather than numbers, and juries are given far more discretion than in any percentage-bar state.
Fault math, worked through
25% at fault on a $100K claim pays $75K
Suppose a concussion / mild tbi claim in South Dakota is worth $100,000 on the facts. Found 25% responsible, you recover $75,000. South Dakota applies pure comparative negligence, so there is no cutoff — even a claimant found 80% at fault still recovers 20% of their damages. Fault still costs you money proportionally, but it never eliminates the claim.
A typical SD concussion / mild tbi claim is worth more than the minimum policy that has to pay it
South Dakota requires drivers to carry $25K per person. A concussion / mild tbi claim in the typical South Dakota range tops out around $100,000. That is $75,000 of value with no policy behind it if the at-fault driver bought the legal minimum — and a severe case at $850,000 leaves $825,000 unreachable. This is why the first question worth asking is not what the claim is worth but what coverage exists, and why the answer often turns on your own policy rather than theirs.
| Where the money comes from | Available | What decides it |
|---|---|---|
| At-fault driver's liability policyRuns out first | $25K minimum | South Dakota's legal floor per injured person ($25K / $50K). Many drivers carry exactly this and nothing more. |
| Your uninsured / underinsured motorist coverageRuns out first | Mandatory | Every South Dakota policy carries it, so there is almost always a second layer here. It stacks on top of, or fills the gap under, the at-fault limits depending on your policy language. |
| Your medical payments coverage | If purchased | MedPay is optional in South Dakota and usually small, but it pays bills during treatment without waiting for the claim and without regard to fault. |
| Commercial, employer or umbrella policy | Case-specific | If the at-fault driver was working, driving a company vehicle, or delivering, a commercial policy with far higher limits usually sits behind them. On a concussion / mild tbi claim worth $100K or more this is the single most valuable thing to establish early. |
The clock
South Dakota's 3-year deadline against a concussion / mild tbi timeline
A concussion / mild tbi claim commonly resolves in 9 to 18 months, comfortably inside South Dakota's 36-month filing window. The deadline is unlikely to be what decides this claim — but shorter notice deadlines can be, particularly if a city, county or state entity was involved.
Every South Dakota deadline that can end your claim
The headline statute of limitations is rarely the deadline people actually miss.
| Deadline | Window | Why it matters |
|---|---|---|
| Personal injury lawsuit | 3 years from the crash | S.D. Codified Laws § 15-2-14. |
| Claim against a government entity | 180 days notice | South Dakota's tort claims procedures require written notice well inside the general three-year deadline. |
What surprises South Dakota claimants
Rules that are specific to South Dakota and routinely catch people who assumed the national norm applied.
'Slight' versus 'gross' is a comparison, not a percentage
Unlike a 50%- or 51%-bar state, South Dakota asks a jury to compare the character of each party's negligence rather than assign clean percentages — which makes case strategy genuinely different from every other state on this site.
The rule is unique nationally
South Dakota is the only state using this hybrid standard, so out-of-state comparisons about 'how comparative fault works' generally don't translate directly to a South Dakota claim.
Sparse population concentrates claim experience
South Dakota's low claim volume means settlement patterns are less standardized than in larger states — case-specific evidence matters even more.
Concussion / Mild TBI settlement bands in South Dakota
National severity bands adjusted for South Dakota's cost of care and verdict climate. Find the row that matches your own treatment.
| Severity | What it looks like | Typical range |
|---|---|---|
| Brief concussion, full recovery | Symptoms resolving within two to four weeks, no imaging findings, no lost work beyond a few days. | $13K–$34K |
| Prolonged recovery | Symptoms lasting one to three months, referral to a concussion clinic, restricted work or screen time. | $30K–$77K |
| Post-concussion syndrome | Symptoms past three to six months, neuropsychological testing showing measurable deficits, vestibular therapy. | $72K–$298K |
| Permanent cognitive deficit | Documented lasting impairment affecting employment, requiring accommodation or career change. | $255K–$1.3M |
Educational ranges compiled from published settlement and verdict reporting. Not a valuation of any specific claim.
Where a SD concussion / mild tbi claim outgrows the minimum policy
South Dakota's minimum liability coverage is $25K per person. Reading down this ladder, a concussion / mild tbi claim clears that figure at the “Brief concussion, full recovery” band — so anyone whose treatment has reached that stage is no longer negotiating over what the claim is worth so much as over where the money is going to come from. Every band on this ladder sits above that figure, so a minimum-limits policy cannot pay a SD concussion / mild tbi claim at any severity.
Brief concussion, full recovery
$13K–$35K
Claim value passes the state minimum here
Symptoms resolving within two to four weeks, no imaging findings, no lost work beyond a few days.
Prolonged recovery
$30K–$78K
Symptoms lasting one to three months, referral to a concussion clinic, restricted work or screen time.
Post-concussion syndrome
$73K–$300K
Symptoms past three to six months, neuropsychological testing showing measurable deficits, vestibular therapy.
Permanent cognitive deficit
$250K–$1.3M
Documented lasting impairment affecting employment, requiring accommodation or career change.
How treatment moves a SD concussion / mild tbi claim
Concussion claims typically take 8 to 18 months, longer than the injury itself, because value cannot be assessed until it is clear whether symptoms will resolve. Post-concussion syndrome claims routinely run two years or more.
Emergency CT scan
Rules out bleeding. A normal CT is expected in concussion and does not mean nothing happened — but the insurer will present it as if it does.
Documented symptom tracking in the first weeks
Concussion claims live or die on contemporaneous records. Symptoms reported at week two carry weight that the same symptoms recalled at month six do not.
Neurology or concussion-clinic referral
Specialist involvement moves the claim out of the soft-tissue bucket and signals that the injury was taken seriously.
Neuropsychological testing
The highest-leverage step in the entire claim. Standardized testing produces objective deficit scores an adjuster cannot wave away.
Vocational assessment
Where cognitive deficits affect work, a vocational expert translates them into a lost-earning-capacity figure — usually the largest number in the file.
Proving a concussion / mild tbi claim in South Dakota
Emergency record noting loss of consciousness, confusion, or amnesia
Neuropsychological test battery with standardized scores
Statements from family or coworkers describing observed changes
Employer documentation of accommodations, errors, or reduced hours
Symptom diary kept from the first week forward
What concussion / mild tbi compensation in South Dakota is made of
The $18K–$100K figure above is a total. These are the parts it is a total of, and which of them you have to document yourself.
Medical bills, at the billed amount
Every concussion / mild tbi demand starts with the total your providers billed — not what a health plan negotiated it down to, and not what you were left owing at the counter. The cost of the same course of treatment runs below the national average in South Dakota, which is part of why the SD range sits below the national one. The bills that get missed are the ones with no claim behind them: the urgent care visit you paid cash for, the brace, the mileage to twenty physical therapy appointments.
Income you already lost, and income you will
Wages you have missed are the straightforward half — a payroll record proves them. Earning capacity is the contested half: what the concussion / mild tbi costs you in the years after the file closes. A SD concussion / mild tbi claim takes 9 to 18 months to value largely because that answer does not exist until a physician will put a lasting restriction in writing. Self-employed claimants carry the heaviest burden here, because there is no employer to write the letter.
Pain and suffering — the line with no receipt
Everything above has a document behind it. This does not, and on a $100,000 concussion / mild tbi settlement it is usually the largest single component. Adjusters build it with a multiplier applied to the medical total or a per-diem rate for each day of documented recovery. Neither is law; both are anchors. The multiplier moves with objective findings — imaging, surgery, a specialist's written restriction — which is why two claimants with near-identical bills settle for very different numbers.
What the figure does not include
Vehicle or property damage settles on a separate track and does not raise the injury number, so accepting that cheque early costs you nothing. Nor does the range above assume you claimed household help, childcare you had to pay for while you could not lift, or the prescriptions you filled without submitting. Those are recoverable and routinely go unclaimed, because nobody keeps receipts for a bad month.
Concussion / Mild TBI in South Dakota: the questions people ask
The questions people actually search for on this topic, answered in full.
How much is a concussion / mild tbi settlement worth in South Dakota?
Typical concussion / mild tbi claims in South Dakota run $17,500 to $100,000, with severe cases reaching $850,000 or more. South Dakota settlements trend somewhat below the national average, which reflects the state's legal climate rather than anything about the injury itself. Your own number depends on treatment, permanence, fault, and the insurance actually available.
How long do I have to file a concussion / mild tbi claim in South Dakota?
South Dakota gives you 3 years from the date of the crash to file a personal injury lawsuit. Other deadlines run shorter — claim against a government entity (180 days notice). Missing the applicable deadline ends the claim regardless of how strong it is.
What happens to my concussion / mild tbi claim if I was partly at fault in South Dakota?
South Dakota is the only state using the slight/gross rule: you recover only if your own negligence was 'slight' compared to the defendant's 'gross' negligence — and your award is still reduced proportionally. Suppose a concussion / mild tbi claim in South Dakota is worth $100,000 on the facts. Found 25% responsible, you recover $75,000. South Dakota applies pure comparative negligence, so there is no cutoff — even a claimant found 80% at fault still recovers 20% of their damages. Fault still costs you money proportionally, but it never eliminates the claim.
Who pays my medical bills after a concussion / mild tbi in South Dakota?
South Dakota has no mandatory personal injury protection, so there is no automatic source of payment while the claim is pending. Your health insurance, medical payments coverage if you carry it, or a provider treating on a lien typically covers the bills, and each of those is then repaid from the settlement. That reimbursement is why the gross settlement figure and what actually reaches you are two very different numbers.
Is the minimum insurance in South Dakota enough to cover a concussion / mild tbi?
South Dakota's minimum bodily injury liability is $25K / $50K. A concussion / mild tbi claim in the typical range of $17,500 to $100,000 can exhaust that coverage outright, which is why your own underinsured motorist coverage is often what determines whether a serious concussion / mild tbi is fully paid.
What will the insurance company argue about my concussion / mild tbi claim?
Standard CT and MRI are not designed to detect the diffuse axonal injury underlying most concussions. A normal scan is the expected result. Adjusters use it anyway, and the counter is neuropsychological testing, which measures function rather than structure. In South Dakota that argument lands inside a slight/gross negligence system, so how much it costs you depends on the fault percentage the adjuster can support.
How long does a concussion / mild tbi claim take to settle in South Dakota?
Concussion claims typically take 8 to 18 months, longer than the injury itself, because value cannot be assessed until it is clear whether symptoms will resolve. Post-concussion syndrome claims routinely run two years or more. South Dakota's 3-year filing deadline sets the outer limit on negotiation — once it passes, the claim is over, so a case that is still being negotiated as the deadline approaches usually has to be filed to preserve it.
Do I need a South Dakota lawyer for a concussion / mild tbi claim?
At the values a concussion / mild tbi claim reaches in South Dakota — commonly $17,500 to $100,000 — most claimants net more with representation even after the contingency fee, because these claims involve permanence arguments, lien negotiation, and often more insurance than one policy.
What if the driver who hurt me in South Dakota only had minimum insurance?
South Dakota's minimum is $25K per injured person, and a concussion / mild tbi claim in the typical range reaches about $100,000 — so a minimum policy runs out before the claim does. What happens next depends on layers the at-fault driver does not control: your own underinsured motorist coverage, a commercial or employer policy if they were working, and occasionally a second at-fault party. A claim that appears capped at $25K is often not, and finding that out is work done in the first weeks, not at settlement.
How much of a concussion / mild tbi settlement do I actually keep in South Dakota?
On a $100,000 settlement — the top of the typical South Dakota range for this injury — a one-third contingency fee, roughly 4% in case expenses and around 15% in medical liens leave about $47,667. The fee is fixed by the agreement you sign; the lien figure is not. Negotiating providers, a health plan or a Medicare conditional payment down is the one line on that list that moves, and every dollar it moves reaches you in full.
How long does a concussion / mild tbi claim take in South Dakota, and can it outlast the deadline?
A concussion / mild tbi claim usually takes 9 to 18 months, because it cannot be valued until treatment plateaus and a doctor will say so in writing. South Dakota allows 36 months to file suit. That leaves margin at the long end, but the clock starts at the crash rather than at diagnosis, and shorter notice deadlines apply if a government vehicle or a public property defect was involved.
Is the average concussion / mild tbi payout in South Dakota what I should expect?
An average describes a population, not your file. The $17,500 to $100,000 band covers SD claims that differ in the three ways that decide a payout: how much treatment the records actually document, whether liability is contested, and how much insurance stands behind the person at fault. A claim at the bottom of that band and one at the top are usually the same injury with different paperwork. The useful thing to do with an average is work out which end of it your own file currently supports, and what would move it.
What a $100K SD concussion / mild tbi settlement actually pays you
Gross settlement figures are not take-home figures. Running the standard deductions against the top of the typical South Dakota range for a concussion / mild tbi shows the gap, and shows where the recoverable money is — which is almost never the fee.
| Gross settlement | $100,000 | Top of the typical concussion / mild tbi range in South Dakota. A severe or surgical case runs well above this. |
|---|---|---|
| Attorney fee (33%) | − $33,333 | One third is the common pre-suit rate; it usually rises to 40% once a lawsuit is filed. Ask which trigger the agreement uses before signing it. |
| Case expenses | − $4,000 | Records, filing fees, expert reports. Normally deducted on top of the fee rather than out of it — confirm which, because on a $100K claim the difference is real money. |
| Medical liens and subrogation | − $15,000 | Health insurers, Medicare, Medicaid and treating providers all hold repayment rights against an injury recovery in South Dakota. |
| Reaches you | $47,667 | About 48% of the gross — before any lien reduction, which is where this number usually improves. |
Illustrative only, at a one-third pre-suit contingency, case expenses of about 4%, and medical liens of about 15% of the recovery. Every one of those varies. The lien line is the one worth attention: providers, health plans and Medicare frequently accept substantial reductions, and every dollar cut from $15,000 reaches you in full — no further negotiation with the insurer required.
More for South Dakota claimants
Concussion / Mild TBI settlements in other states
What causes Concussion / Mild TBI claims in South Dakota
Ranges reflect published settlement and verdict data adjusted for South Dakota's legal climate; they are educational estimates only — not legal advice or a valuation of any specific claim. InjurySage is not a law firm. Laws summarized here can and do change; verify every deadline with a licensed South Dakota attorney before relying on it. Page updated August 2026.