How to Calculate a Personal Injury Settlement

There is no official formula for a personal injury settlement. Workers’ compensation is different: most states’ workers’ comp laws include a schedule that values the permanent loss of use of specific body parts. Those schedules don’t apply to a personal injury claim against whoever caused the injury. In that kind of claim, no statute says what a broken wrist is worth, and two cases with the same injury can settle for very different amounts. Insurers and attorneys still build the number from the same pieces, in roughly the same order.

This guide walks through those pieces: the damages, the two common methods for valuing pain and suffering, the adjustments for fault and insurance, and the deductions that decide what the client receives. An example near the end puts them together.

The settlement formula in one line

Written out, the calculation most attorneys and adjusters start from looks like this:

Each term is an estimate, and each one moves in negotiation. The fault term also depends on the state: most states reduce the recovery by the injured person’s share of fault, many bar recovery once that share reaches 50% or 51%, and a few bar it for any fault at all (see Step 3). The sections below explain where each number comes from and what moves it.

Step 1: Add up the economic damages

Economic damages, also called special damages, are losses with a bill, receipt or pay stub behind them. They anchor everything that follows, so they need to be complete and documented.

Past medical expenses.

Ambulance, emergency room, hospital stays, surgery, imaging, physical therapy, prescriptions and medical equipment.

Future medical care.

Treatment a doctor expects the person to need, such as another surgery or ongoing therapy. It needs a medical opinion behind it.

Lost wages.

Pay missed while recovering, shown with things like pay records, a disability note from a doctor, or a letter from the employer. Sick days or paid time off used while recovering can often be claimed too.

Lost earning capacity.

The gap between what the person could have earned and what they can earn now, when the injury limits future work.

Out-of-pocket costs.

Mileage to appointments, prescription costs, medical devices (like braces/crutches) and household help. After a crash, damage to the vehicle is usually handled separately, as a property damage claim.

Which medical figure counts depends on the state. Bills are often far higher than what an insurer actually paid, and some states limit recovery or evidence to the amount paid or owed. In Texas, recovery of medical expenses is limited to the amount actually paid or incurred by or on behalf of the injured person (Tex. Civ. Prac. & Rem. Code § 41.0105). Since 2023, a Florida jury hearing about medical bills that have already been paid sees only the amount actually paid (Fla. Stat. § 768.0427). Because the pain-and-suffering estimate is often built on the medical total, that choice carries through the whole calculation.

Adjusters check every bill against the medical records. A charge that can’t be tied to a treatment note, or treatment that can’t be tied to the accident, tends to come out of the total. That is the job of a medical chronology: every visit, diagnosis and bill in order, each cited to the page it came from.

Step 2: Estimate pain and suffering

Non-economic damages, also called general damages or pain and suffering, cover losses that no bill puts a number on: physical pain, emotional distress, loss of enjoyment of life and scarring. The injury’s effect on a spouse, known as loss of consortium, is a separate claim that belongs to the spouse. Since no bill sets the value of these losses, two shortcuts are widely used to put a number on them.

The multiplier method

Multiply the economic damages, often just the medical expenses, by a factor. Adjusters often use a multiplier between 1.5 and 5, and multipliers of 1.5 to 3 are common, according to Nolo’s guide to the multiplier. The low end fits soft-tissue injuries that heal in weeks; the high end fits fractures, surgery, lasting impairment or scarring.

With $20,000 in medical expenses and a multiplier of 3, the pain-and-suffering estimate is $60,000.

The per diem method

Per diem means per day. Pick a daily rate for living with the injury and multiply it by the number of days of recovery, usually counted until the person reaches maximum medical improvement, the point at which a doctor says the condition has stabilized. The daily rate is often set at the person’s daily earnings, on the idea that each day of pain is worth at least a day’s pay.

At $200 a day for 180 days, the estimate is $36,000.

Per diem works well for injuries with a clear end date. A permanent injury has no end date to multiply by, which is one reason the multiplier is more common in serious cases.

What insurers actually do

Insurers don’t publish their formulas, and some use software to guide their offers. The most widely reported is Colossus, which Allstate used to guide settlement offers on auto bodily injury claims. In 2010, Allstate agreed with 45 states to tell claimants that Colossus may be used, and not to require adjusters to settle based solely on the value it recommends (Insurance Journal). Whatever the tool, the practical lesson is the same: the value an adjuster assigns follows what the records document. Pain that never makes it into a treatment note is hard to get paid for.

Some states also cap non-economic damages in certain kinds of cases, most often medical malpractice, which puts a ceiling on this part of the calculation.

Step 3: Adjust for shared fault

If the injured person was partly responsible for the accident, most states reduce the recovery by their share of fault. A client found 20% at fault recovers 80% of the damages. Where recovery stops depends on the state’s rule:

Pure comparative fault.

Recovery is reduced by the person’s share of fault, however large. California follows this rule (Li v. Yellow Cab Co.), so a client 60% at fault still recovers 40%.

Modified comparative fault with a 50% bar.

Recovery is reduced by the person’s share of fault and barred at 50% or more. Georgia follows this rule (O.C.G.A. § 51-12-33).

Modified comparative fault with a 51% bar.

Recovery is reduced by the person’s share of fault and barred once it is greater than 50%, so a client exactly 50% at fault still recovers half. Massachusetts, Texas and Wisconsin follow this rule, and Wisconsin compares the injured person’s fault with each defendant’s separately. Florida adopted it for lawsuits filed after March 24, 2023, except in medical negligence cases, and Louisiana moved to it on January 1, 2026.

Contributory negligence.

Any fault at all bars recovery. Alabama, Maryland, North Carolina, Virginia and Washington, D.C. still follow this rule, though D.C. makes an exception for some pedestrians and cyclists.

These rules change, as Florida and Louisiana show, so check the current law in the state where the case is.

Fault is negotiated like everything else. An adjuster’s first offer often assumes a larger share of fault than the evidence supports, so police reports, photos, witness statements and video matter as much as the medical file.

Step 4: Check how much insurance can pay

A settlement is usually limited by what someone can actually pay. In most car crashes that means the at-fault driver’s bodily injury liability limit, plus any underinsured motorist coverage on the injured person’s own policy. When the damages are higher than the available coverage, the realistic settlement is often the policy limit, unless there is another responsible party, an umbrella policy or assets worth pursuing.

In no-fault states, the injured person’s own personal injury protection (PIP) coverage pays first (for automobile claims), and a claim for pain and suffering may have to clear a threshold. In Massachusetts, for example, a car-accident claim for pain and suffering generally requires more than $2,000 in reasonable and necessary medical expenses, or an injury such as a fracture, permanent and serious disfigurement, or loss of sight or hearing (M.G.L. c. 231, § 6D).

Knowing the limits early keeps the demand realistic and the client’s expectations grounded.

Step 5: Weigh the evidence and the weak spots

Two cases with the same bills can settle far apart because of what the records show. Adjusters look for reasons to discount, including:

• gaps in treatment

• a delayed first visit after the accident

• prior injuries or pre-existing conditions in the same area

• prescriptions that were never filled

• no doctor’s opinion connecting the injury to the accident

• missing records

Venue matters too. Juries in some places award more than juries in others, which is why attorneys look at verdicts and settlements in comparable cases from the same jurisdiction.

The firms that do this well find the weak spots first. Some can be fixed: request the missing records or ask the treating doctor for a causation letter. The rest can be explained in the demand before the adjuster raises them. Verdica’s medical record analysis flags these issues, each linked to the page it came from.

Step 6: Work out the client’s net recovery

The settlement amount and the client’s check are different numbers. Before the client is paid, several things come out:

Attorney’s fee.

Personal injury lawyers usually work on contingency, often for about a third of the recovery (a State Bar of California fee arbitration advisory), and some agreements raise the percentage if the case goes into litigation. Some states regulate these fees; Florida, for example, has a fee schedule for personal injury cases in its bar rules.

Case costs.

Filing fees, records fees, expert fees and deposition costs advanced by the firm. Whether costs come out before or after the fee is calculated depends on the fee agreement.

Liens and reimbursement claims.

Health insurers, employer health plans, Medicare, Medicaid and some hospitals can claim repayment from the settlement for accident-related care they paid for. Medicare’s payments for that care are conditional, which means they must be repaid when a settlement is made. Many liens can be negotiated down.

Taxes usually aren’t one of the deductions. Under federal law, compensation for personal physical injuries or physical sickness, including the part for lost wages, is generally excluded from income, while punitive damages and interest are generally taxable (IRS). A tax professional should confirm how a specific settlement is treated.

A worked example

Here is a hypothetical case. The numbers are invented for illustration, and real cases vary widely.

A client is rear-ended at a stop light and treats for six months for a neck injury, including physical therapy and two injections. The case is in Texas, which has a 51% bar, and the adjuster argues the client was 20% at fault for braking suddenly. The at-fault driver has a $100,000 bodily injury limit.

The inputs that move the result most are the ones an adjuster can challenge: the medical total, the multiplier and the fault percentage. Each depends on the record.

Using the per diem method instead, at $180 a day for 180 days, pain and suffering would be $32,400 and the settlement value $52,720. That difference is why attorneys often run both methods and argue for the one the evidence supports.

How firms build a number an adjuster will accept

A settlement figure is a claim, and the adjuster’s job is to test it. Demands that hold up tend to share a few habits:

1. 1

   Start from a complete chronology. Every visit, diagnosis and bill, in order, tied to the accident.

2. 2

   Know which medical total applies. Billed, paid or owed, depending on the state.

3. 3

   Support future care with a doctor’s opinion. A treating physician’s letter or a life care plan.

4. 4

   Find the weak spots first. Treatment gaps, prior injuries and missing causation opinions, addressed before the adjuster raises them.

5. 5

   Back the multiplier with comparables. Verdicts and settlements in similar cases from the same venue show the adjuster the number isn’t arbitrary.

6. 6

   Show the reasoning. It is easier for an adjuster to push back on a number than on a cited record.

7. 7

   Plan the net. Know the liens and policy limits before setting the client’s expectations.

This is the work Verdica was built for. It reads the medical records, including messy scans and faxes, builds a chronology with every fact cited to its page, and flags what an adjuster will question. Its settlement valuation weighs verdict and settlement comparables, applies state rules and damages caps, warns when policy limits come into play, estimates the client’s net recovery after fees and liens, and shows the reasoning behind every valuation. Then it drafts the demand letter, with every fact cited.

Why online settlement calculators fall short

Online calculators can give a rough sense of scale, but they can’t do the parts that decide most cases:

• They can’t read the medical records, so they can’t weigh treatment gaps, causation or prior injuries.

• They usually apply a multiplier to billed amounts, which some states don’t allow as evidence.

• They ignore policy limits and liens, so the number they show isn’t what anyone would receive.

• They can’t see fault, venue or the quality of the evidence.

Frequently asked questions

This article is general information, not legal advice. Laws differ by state and change over time. For advice about a specific case, talk to a licensed attorney in that state.