Personal Injury Settlement Calculator
Estimates a personal injury settlement using the multiplier method, then adjusts for comparative liability. Useful for budgeting expectations before negotiating with an insurance adjuster or hiring counsel — not a substitute for an attorney's case valuation.
Last updated: May 2026
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About this calculator
Personal injury settlements typically combine economic damages (out-of-pocket losses) and non-economic damages (pain and suffering), then adjust for comparative fault. The formula used here is: settlement = ((medicalExpenses × injurySeverity) + lostWages + propertyDamage) × (liabilityPercentage / 100). Variables: medicalExpenses (all incurred medical costs to date), injurySeverity (a multiplier 1.5–6 representing minor through catastrophic injury — proxies for pain and suffering), lostWages (income missed during recovery), propertyDamage (vehicle or property loss), liabilityPercentage (the defendant's share of fault, 0–100%). The injury-severity multiplier scales medical costs to capture non-economic damages, while lost wages and property damage are added as direct economic losses without amplification. Multiplying the gross damages by liability percentage applies the comparative-negligence doctrine used in most U.S. states. Edge cases: this formula does not account for insurance policy limits (the most common cap on actual recovery), structured settlements, prior settlements with co-defendants, attorney fees (typically 33% on contingency), Medicare/Medicaid liens, or pure-contributory states (Alabama, Maryland, North Carolina, Virginia, D.C.) where any plaintiff fault bars recovery entirely.
How to use
Example 1: $25,000 medical expenses, $15,000 lost wages, moderate injury (multiplier 3), $5,000 property damage, defendant 100% liable. Step 1 — apply severity multiplier: $25,000 × 3 = $75,000. Step 2 — add economic losses: $75,000 + $15,000 + $5,000 = $95,000. Step 3 — apply liability: $95,000 × 1.00 = $95,000. Verify: total includes $75k pain-and-suffering plus $20k pure economic loss — consistent with moderate-injury norms. Example 2: $8,000 medical, $5,000 lost wages, $0 property damage, severity 1.5 (minor), liability 75%. Step 1: $8,000 × 1.5 = $12,000. Step 2: $12,000 + $5,000 + $0 = $17,000. Step 3: $17,000 × 0.75 = $12,750. Verify: 25% comparative-negligence reduction matches the formula behavior — defendant pays 75% of gross damages.
Frequently asked questions
How does the injury severity multiplier affect my settlement estimate?
The injury severity multiplier scales your medical costs to represent non-economic damages such as pain, suffering, and loss of enjoyment of life. A multiplier of 1.5 is typical for short-term, fully recoverable injuries like sprains and minor whiplash. Values of 3 apply to fractures and concussions requiring months of recovery. Severe multipliers of 4.5 cover surgeries with lasting impairment, and catastrophic multipliers of 6+ apply to permanent disability, traumatic brain injury, or disfigurement. Because the multiplier applies to all medical costs, even a small change can swing the estimate by tens of thousands of dollars — insurers and plaintiff attorneys negotiate this figure aggressively.
What is comparative negligence and how does it affect a personal injury settlement?
Comparative negligence reduces your settlement by your own percentage of fault in an accident. If you are found 25% at fault, a defendant who is 75% liable only owes 75% of the total damages. This calculator reflects that by multiplying your gross damages by the defendant's liability percentage. Most states use either pure comparative negligence (you can recover even if 99% at fault) or modified comparative negligence (typically barred at 50% or 51% fault). A handful of jurisdictions still follow pure contributory negligence, where any fault on your part bars all recovery — Alabama, Maryland, North Carolina, Virginia, and Washington D.C.
Why are future care costs important in a personal injury settlement?
Future care costs represent anticipated medical expenses you have not yet incurred — ongoing therapy, additional surgeries, long-term medications, prosthetic replacements, or in-home care. They must be included in your settlement because once you sign a release, you cannot return for more compensation later. Courts and insurers typically require documented medical opinions (often from a life-care planner) to substantiate future care estimates. Failing to project future costs is one of the most common reasons injury victims end up undercompensated. For serious injuries, a structured settlement that pays out over time can be safer than a lump sum that may underestimate future medical inflation.
What are common mistakes when estimating a personal injury settlement?
Using an inflated severity multiplier overstates pain-and-suffering and produces unrealistic demands that insurers reject outright. Forgetting to subtract attorney contingency fees (typically 33% pre-trial, 40% post-trial) overstates the cash actually reaching your pocket. Ignoring health-insurance subrogation and Medicare/Medicaid liens — which can claim 100% of medical damages — leaves you surprised at closing. Calculating gross damages before insurance policy limits is the most common mistake: a $500,000 estimate is meaningless if the defendant carries only $25,000 in liability coverage with no personal assets. Counting prior workers' comp or short-term disability payments as 'lost wages' often constitutes double recovery and reduces the net settlement.
When should I NOT use this personal injury settlement calculator?
Never rely on a formula-based estimate for cases involving permanent disability, traumatic brain injury, paralysis, or wrongful death — these require expert valuation including life-care plans and economist testimony. Cases against deep-pocket defendants (large corporations, governments) often settle for far more than the multiplier method predicts due to punitive-damages exposure. Cases where the at-fault party has minimal insurance and few assets typically settle for policy limits regardless of damages calculated. Workers' compensation claims follow entirely separate statutory schedules, not the multiplier method. Class actions, mass torts, and product liability cases involve complex aggregation and allocation that no simple formula can capture — retain experienced personal injury counsel for any meaningful claim.