Indiana Comparative Fault Law — How Shared Fault Affects Your Injury Claim

Under IC 34-51-2-6, an injured person in Indiana is barred from recovery if their contributory fault is greater than the fault of all persons whose fault proximately contributed to the injury. In practical terms, this means you can recover damages when you are 50% or less at fault, but you get nothing when your fault reaches 51% or higher.

IC 34-51-2-5 spells out the reduction formula: any contributory fault on your part diminishes your compensatory damages proportionally, but does not bar recovery unless you cross the 51% threshold. A jury (or judge in a bench trial) assigns a specific fault percentage to every party involved, including you. Your total award is then reduced by your percentage.

Indiana's threshold is firm. There is no judicial discretion to soften the rule for sympathetic plaintiffs. If the evidence shows you were 51% at fault for a collision — even if the other driver was drunk — the court enters judgment for the defendant. This makes fault determination the single most important issue in most Indiana personal injury cases.

The math is straightforward once the jury assigns percentages. If your total damages are $100,000 and you are 0% at fault, you recover the full $100,000. At 20% fault, you recover $80,000. At 40% fault, you recover $60,000. At 50% fault — the maximum allowed — you recover $50,000. At 51% fault, you recover nothing.

Consider a rear-end collision on I-465 in Indianapolis. You were checking your phone when the car ahead stopped suddenly. The other driver had no working brake lights. A jury might assign you 40% fault (distracted driving) and the other driver 60% fault (equipment violation). On $150,000 in damages, you would recover $90,000 — your $150,000 reduced by 40%.

Now change one fact: you were also speeding. The jury bumps your fault to 55%. Your recovery drops from $90,000 to zero. That 15-percentage-point swing — from 40% to 55% — is the difference between a $90,000 verdict and nothing. This is why evidence that shifts even a few percentage points of fault matters enormously in Indiana injury cases.

Fault in Indiana is determined through a combination of evidence review by insurance adjusters, investigation by attorneys, and ultimately a jury verdict if the case goes to trial. The key evidence includes police reports, witness statements, photographs and video footage, vehicle damage patterns, electronic data recorder (black box) data, and expert accident reconstruction analysis.

Police reports carry significant weight during insurance negotiations, though they are not always admissible at trial if they contain officer opinions or hearsay. Independent witness testimony — from people with no connection to either driver — tends to be the most persuasive evidence. Dashcam and surveillance footage, when available, can be decisive because it removes the he-said-she-said dynamic entirely.

Insurance adjusters make an initial fault determination during the claims process. Their job is to minimize what their company pays, so they will look for any evidence that you contributed to the accident. Adjusters may point to your speed, your lane position, whether you were wearing a seatbelt, or whether you sought medical treatment promptly. Having your own evidence — photos from the scene, witness contact information, and a complete medical record — gives you ammunition to counter their narrative.

Indiana's comparative fault statute has special rules for accidents involving multiple parties. Under IC 34-51-2-6, your fault is measured against the fault of all persons whose negligence contributed to your damages. In a multi-defendant lawsuit, the jury assigns a fault percentage to each party, including nonparties who contributed to the accident.

Joint and several liability applies when a defendant is found 51% or more at fault. That defendant can be held liable for the full amount of your damages (after reducing for your own fault), regardless of whether other defendants can pay their share. If a defendant is less than 51% at fault, they are liable only for their proportionate share.

A critical 2023 Indiana Supreme Court case, Davidson v. State (No. 22S-CT-318), clarified that a plaintiff who obtains judgment against some defendants cannot later sue different defendants for the same injury. The Comparative Fault Act effectively requires all defendants to be named in a single lawsuit. This means you must identify every potentially responsible party early — missing one could permanently limit your recovery.

When your injury involves a government entity — a city bus, a state highway department truck, a school district vehicle — different rules apply. Claims against government entities in Indiana are subject to contributory negligence, not comparative fault. Under the Indiana Tort Claims Act (IC 34-13-3), if you are even 1% at fault, you may be completely barred from recovery against the government.

Government claims also require a tort claim notice: 180 days for political subdivisions (cities, counties) or 270 days for state agencies. The notice must be hand-delivered or sent by registered or certified mail to the Attorney General (for state claims) or the relevant government office (for local claims). The government has 90 days to respond.

Damages against government entities are capped at $700,000 per person and $5,000,000 per occurrence under IC 34-13-3-4. Punitive damages are prohibited entirely. The combination of contributory negligence, strict notice deadlines, and damage caps makes government injury claims significantly harder to win than private-party claims. If a government entity may share fault for your accident, consult an attorney immediately — the 180-day clock starts at the date of injury.

Insurance adjusters are trained to find shared fault. Even in cases where the other driver ran a red light or rear-ended you, the adjuster will look for ways to assign you a percentage of blame. Common arguments include: you were not wearing a seatbelt (which can reduce your damages under Indiana law), you were speeding even slightly, you did not seek medical treatment quickly enough, or you made a statement at the scene that could be interpreted as admitting fault.

The adjuster's goal is to push your fault percentage as high as possible — ideally past 51%, which eliminates the claim entirely. Even pushing your fault from 20% to 40% saves the insurance company 20% of the claim value. On a $200,000 claim, that 20-point shift is worth $40,000 to the insurer.

Protect yourself by collecting evidence immediately after the accident: photograph the scene and all vehicles from multiple angles, get names and phone numbers of witnesses, request the police report, and do not give a recorded statement to the other driver's insurance company without legal counsel. You are under no legal obligation to provide a recorded statement, and anything you say can be used to increase your assigned fault percentage.

The strongest evidence in a comparative fault case is objective and contemporaneous — meaning it was created at or near the time of the accident and does not depend on anyone's memory. Dashcam footage, traffic camera video, and photos taken at the scene within minutes of the collision are the gold standard. Electronic data recorder (EDR) data from modern vehicles can show pre-impact speed, braking, and steering inputs.

Medical records also play a role in fault determination. Prompt medical treatment creates a documented link between the accident and your injuries. Gaps in treatment give the insurance company room to argue that your injuries were pre-existing or not caused by the accident. Follow your doctor's treatment plan, attend all appointments, and keep records of every visit.

In serious or disputed-fault cases, expert accident reconstruction can be the deciding factor. A reconstructionist analyzes physical evidence — skid marks, vehicle damage, road conditions, sight lines — to determine what happened and who is responsible. This expert testimony can shift the fault determination by 10, 20, or 30 percentage points, which in Indiana's system can mean the difference between full recovery and nothing.

Wondering how fault might affect your case? Get your free Injury Claim Check. You will answer a few questions about your accident and injuries, and we will provide a personalized report that includes how Indiana's comparative fault rule applies to your situation, what your claim may be worth after any fault reduction, and whether connecting with an Indianapolis personal injury attorney makes sense for your case.

Insurance companies are already building their case to assign you fault. The sooner you understand where you stand, the better positioned you are to protect your claim. Free, confidential, and takes less time than a phone call.