What Missouri's Pure Comparative Fault Rule Means If You Were Partly at Fault

October 19, 2026

A lot of people assume that if they did something wrong before a crash or accident, they have no case. That assumption is wrong, at least in Missouri. The state follows a rule that gives injured people the right to pursue compensation even when they share some of the blame. Understanding how this rule works can change the way you think about your legal options.

What Is Missouri’s Pure Comparative Fault Rule?

Missouri's pure comparative fault rule allows injured people to recover compensation even if they were partially at fault, with damages reduced by their percentage of fault.

Missouri follows pure comparative fault. For products-liability claims, the doctrine is codified in § 537.765; for ordinary negligence claims, including vehicle-crash cases, it derives from Missouri Supreme Court precedent, notably Gustafson v. Benda. Under this rule, fault is divided among everyone involved in an incident. If a court finds you were 30 percent at fault for a car accident and the other driver was 70 percent at fault, you can still recover 70 percent of your total damages.

The word “pure” is significant. Some states use a modified version that cuts off recovery if you are more than 50 or 51 percent at fault. Missouri has no such cutoff. Even if you were 90 percent responsible for what happened, you can technically still pursue the remaining 10 percent in damages. That is what makes Missouri’s system distinct from many others across the country.

How Fault Gets Assigned in a Missouri Personal Injury Case

Fault in Missouri injury cases is determined by evidence, witness testimony, expert analysis, and sometimes jury decisions, not by what the insurance company says.

Fault is rarely assigned on a handshake. In most cases, it comes down to what the evidence shows. That includes police reports, surveillance footage, photographs from the scene, medical records, and statements from witnesses. In complex cases, accident reconstruction specialists may be brought in to piece together what happened.

Insurance companies conduct their own investigations, but their conclusions are not final. Adjusters work to limit payouts, and they may assign you a higher percentage of fault than the evidence actually supports. This is one of the reasons having legal representation matters. An attorney can challenge a fault determination that is inflated or inaccurate.

In cases that go to trial, a jury assigns the percentage of fault to each party. The judge then applies that percentage to reduce the damages award accordingly.

What Damages Can You Still Recover?

In Missouri, recoverable damages include medical bills, lost income, pain and suffering, and property damage, all reduced proportionally by your share of fault.

If you were partly at fault, you do not walk away empty-handed under Missouri law. The damages you can pursue still fall into the same categories as any other personal injury claim:

• Medical expenses, including emergency care, surgery, physical therapy, and future treatment
• Lost wages from time missed at work, plus reduced earning capacity if injuries are long-term
• Pain and suffering, which covers physical pain as well as emotional distress
• Property damage for vehicle repairs or replacement

The key difference is that each of these amounts gets reduced by your assigned percentage of fault. If your total damages add up to $100,000 and you were found 25 percent at fault, your recovery would be $75,000.

Common Scenarios Where Shared Fault Comes Up

Shared fault often arises in rear-end crashes, pedestrian accidents, and slip-and-fall cases where the injured person's actions are questioned.

Comparative fault issues come up in many types of cases. A driver who ran a yellow light and got hit by someone speeding through the intersection may share some fault. A pedestrian who crossed mid-block might still have a claim against a driver who was texting. A customer who slipped in a store might face questions about whether they were watching where they were going.

In each of these situations, the injured person’s mistake does not erase the other party’s responsibility. Missouri law accounts for that nuance. Both parties can be negligent, and both can bear a share of the consequences.

Why the Insurance Company’s Fault Assessment Is Not the Final Word

Insurance companies often assign fault to minimize payouts. Their determination can be challenged with evidence and legal advocacy.

After an accident, the at-fault party’s insurance company will review the claim and assign fault percentages. That number directly affects how much they offer to pay. Insurance adjusters are trained to keep settlements low, and one of their most effective tools is inflating the claimant’s percentage of fault.

If an insurer tells you that you were 60 percent at fault and they will only cover 40 percent of your damages, that number is not set in stone. Evidence, expert testimony, and legal arguments can shift that percentage in your favor. This is exactly the kind of work that a personal injury attorney handles during negotiations and, when necessary, at trial.

How Naji Injury Law Can Help

If you were hurt in Missouri and someone is telling you that you cannot recover because you were partly at fault, we want you to know that the law may say otherwise. At Naji Injury Law, we work with everyday people facing real injuries and real financial pressure, and we know how to build the kind of case that holds up.

We take the time to gather evidence, challenge inflated fault assignments, and fight for the full value of what our clients have been through. If you have questions about your situation, reach out to us at (314) 931-5016 or via our website. There is no pressure, just straightforward answers about where you stand.

Last updated: October 2026