BallparkA brain injury settlement is your economic damages (medical bills, future care, lost income, and any lifetime care costs) plus a pain-and-suffering amount set by how serious the traumatic brain injury is, reduced by your share of fault. The multiplier runs from about 2x for a mild concussion up to 10x for a catastrophic TBI with a documented permanent deficit. This TBI settlement calculator does that math for you instantly.
A mild TBI is the hardest injury to prove
A concussion can leave you with headaches, memory gaps, and mood changes that are completely real, and a standard CT or MRI that looks completely normal. That mismatch is what insurers exploit: if they cannot see it on a film, they argue it did not happen or is exaggerated. The way through is objective evidence, which is why this calculator asks about your imaging, your loss of consciousness, and any documented cognitive deficit.
How a brain injury settlement is calculated
Add up your economic damages, multiply by a factor set by the severity of the brain injury and the objective proof behind it, then reduce the total for any share of fault.
Settlement = (economic + economic x multiplier) x (1 - fault)
Example: $100,000 economic + ($100,000 x 2 = $200,000 pain and suffering) = $300,000 before any fault reduction
| TBI severity | Base multiplier |
|---|---|
| Mild (concussion, post-concussion syndrome) | 2x |
| Moderate (extended symptoms, some deficits) | 3.5x |
| Severe (long-term impairment) | 5x |
| Catastrophic (permanent, life-altering) | 6.5x |
The base then climbs with the objective proof. A loss of consciousness adds to the multiplier and longer is worth more (under 30 minutes adds about 0.25, under 24 hours about 0.5, over 24 hours about 1.0). Positive CT or MRI findings add about 0.5. A documented permanent cognitive deficit adds about 1.0, the single largest bump of any factor. The final multiplier is capped at 10x.
Mild traumatic brain injury settlements
Most people searching for a brain injury payout had a mild TBI: a concussion or post-concussion syndrome. It is the highest-volume question in this area, and the hardest to answer honestly, because a mild TBI is the injury insurers fight hardest.
The problem is proof, not pain. A mild TBI often does not show on a standard scan, and you can look and sound completely normal while struggling to hold a conversation or keep a job. An adjuster reads a clean MRI and a normal-looking claimant and argues there is nothing to pay for.
What actually moves a concussion claim
Two things separate a well-paid mild TBI claim from a dismissed one. First, objective imaging: even a small finding on a CT, MRI, or a more sensitive scan turns an invisible injury into something on a film. Second, formal neuropsychological testing, which measures memory, attention, and executive function against a baseline and puts a documented number on the deficit. In the calculator, those are exactly the inputs that raise the multiplier.
What raises a TBI settlement
Value follows objective evidence and lasting harm. The factors that move the number most, in rough order:
Objective imaging findings
A positive CT or MRI is the biggest credibility factor in a mild TBI claim. It is the difference between an argument about symptoms and a fact on a scan.
Neuropsychological testing
Formal testing documents the deficit against a baseline, so memory and concentration problems become measured findings instead of complaints.
Loss of consciousness duration
A recorded loss of consciousness, and how long it lasted, is one of the first markers of severity an ER notes and an adjuster looks for.
A documented permanent cognitive deficit
A lasting, rated impairment adds more to the multiplier than any other single factor, because it turns a temporary injury into a permanent one.
A life-care plan
For serious injuries, an expert prices out decades of future treatment, attendant care, and supervision. Those costs both add to the base and get multiplied.
Average brain injury settlement amounts
There is no reliable single average, and anyone quoting one precisely is usually quoting a skewed number, because a handful of catastrophic cases drag every average upward. It is more honest to think in rough bands by severity than to trust a headline figure.
| TBI severity | Rough settlement band |
|---|---|
| Mild concussion, limited proof | Low five figures |
| Mild TBI, clear imaging and testing | Mid five to low six figures |
| Moderate TBI with lasting deficits | Six figures |
| Severe or catastrophic TBI | High six figures into the millions |
These are rough framings to set expectations, not promises. Two claims with the same diagnosis can settle for very different amounts depending on the evidence, the insurance available, and the state.
Lifetime care costs drive catastrophic TBI values
For a severe or catastrophic brain injury, the medical bills so far are a small part of the picture. The real driver is the cost of the rest of the person's life: attendant care, therapy, assistive technology, home modifications, and supervision, often for decades.
A life-care plan is the expert report that prices all of this out. Because those projected costs are economic damages, they do two things at once in the formula: they raise the base the multiplier is applied to, and the multiplied result climbs with them. That compounding is why catastrophic TBI settlements routinely reach seven and eight figures, and why leaving lifetime care out of an estimate can understate a serious claim by millions.
How your state changes the number
Your share of fault reduces the settlement, but the rule depends on the state.
| Rule | What it does | Example states |
|---|---|---|
| Contributory negligence | Any fault of yours can bar recovery entirely | AL, MD, NC, VA, DC |
| Modified comparative | Reduced by your share, barred once you are about half at fault | Most states |
| Pure comparative | Reduced by your share, with no cutoff | CA, NY, WA, and others |
Several states are also no-fault: your own insurance pays first through PIP, and you can only claim pain and suffering if the injury crosses the state threshold. A mild concussion with no objective findings can fall below that threshold, so in a no-fault state the calculator drops the pain-and-suffering portion. A TBI with imaging findings or a documented deficit generally clears it.
Worked examples
Each uses the same formula as the calculator above, with no fault deducted.
Mild concussion, normal scans, no lasting deficit
Mild TBI$7,000 medical + $3,000 lost wages = $10,000 economic. A mild TBI with no objective findings sits at 2x, adding $20,000. Estimated settlement: $22,500 to $37,500. This is the hardest kind of claim to prove, and the number climbs the moment there is imaging or testing behind it.
Moderate TBI, positive MRI, documented deficit
Moderate TBI$60,000 medical + $40,000 future medical + $20,000 lost income = $120,000 economic. Moderate (3.5x) plus a loss of consciousness under 24 hours (0.5), positive imaging (0.5), and a documented permanent cognitive deficit (1.0) reach a 5.5x multiplier, adding $660,000. Estimated settlement: $585,000 to $975,000.
Catastrophic TBI with a life-care plan
Catastrophic TBI$150,000 medical + $350,000 future medical + $500,000 future lost income + $1,000,000 lifetime care = $2,000,000 economic. Catastrophic (6.5x) plus a loss of consciousness over 24 hours (1.0), positive imaging (0.5), and a permanent deficit (1.0) reach a 9x multiplier, adding $18,000,000. Estimated settlement: $15,000,000 to $25,000,000.
The policy limit is the real ceiling
A large TBI number is what the damages are arguably worth, not necessarily what is collectible. A typical driver carries $50,000 to $100,000 in liability coverage, and a settlement rarely exceeds it unless a commercial vehicle or a larger policy is involved. The car accident settlement calculator lets you cap an estimate at the at-fault driver's actual policy limit.
What to do after a brain injury
Get imaging, and push for it if a scan looks clear
A standard CT can miss a mild TBI. If symptoms persist, ask about a more sensitive scan. Objective findings are the foundation of the whole claim.
Ask for neuropsychological testing
Formal testing is what turns "I cannot focus anymore" into a measured, documented deficit an adjuster cannot wave away.
Document the loss of consciousness
Make sure any loss of consciousness, and how long it lasted, is in the ER and follow-up records. It is one of the first severity markers an insurer checks.
Keep a symptom journal, and involve family
Short, dated notes on headaches, memory lapses, sleep, and mood, plus observations from people who knew you before, are hard for an adjuster to dismiss.
Do not settle before the deficits are known
Cognitive symptoms can take months to stabilize. Settling early can forfeit the single largest driver of value, a documented permanent deficit, and once you sign you cannot reopen it. A neck or back injury that happened in the same crash can be estimated separately.