Many crashes are not 100% one person's fault. Maybe you were a few miles over the limit when someone ran a red light. Maybe you changed lanes just as another driver sped up. Can you still recover?
In most states, yes — but how much depends on your state's fault rule. This guide explains the three main systems with simple examples.
Examples use percentages only to show how the rules work. They are not predictions about any real case.
What is comparative fault?
Comparative fault means responsibility for a crash is divided by percentage, and your compensation is reduced by your share. If you were found 20% at fault, your recovery could be reduced by 20%.
States use three main versions of this idea.
1. Pure comparative fault
You can recover even if you were mostly at fault — your recovery is just reduced by your share.
Example: you were found 70% at fault. Under pure comparative fault, you could still recover 30% of your losses.
States generally using pure comparative fault include Alaska, Arizona, California, Kentucky, Mississippi, Missouri, New Mexico, New York, Rhode Island and Washington.
2. Modified comparative fault
You can recover only if your share of fault is below a cut-off. There are two versions:
- 50% bar: you cannot recover if you are 50% or more at fault. Example: at 50%, you recover nothing; at 49%, your recovery is reduced by 49%.
- 51% bar: you cannot recover if you are more than 50% at fault. Example: at 50%, your recovery is reduced by 50%; at 51%, you recover nothing.
Most states use one of these versions — for example, Georgia and Tennessee use a 50% bar, while Texas, Illinois, Florida (since 2023) and Pennsylvania use a 51% bar.
3. Contributory negligence
If you were even slightly at fault, you may be barred from recovering at all. This strict rule is used in Alabama, Maryland, North Carolina, Virginia and Washington, DC.
There are exceptions. The "last clear chance" doctrine, for example, may allow recovery if the other driver had the final opportunity to avoid the crash. DC has also changed the rule for many pedestrians and cyclists. Because the rule is so strict, an attorney's review is especially important in these places.
South Dakota uses its own approach, allowing recovery only when the injured person's negligence was "slight" compared with the other party's.
Comparison table
| Rule | Can you recover if partly at fault? | Example at 40% fault |
|---|---|---|
| Pure comparative | Yes, at any percentage | Recovery reduced by 40% |
| Modified (50% bar) | Only below 50% | Recovery reduced by 40% |
| Modified (51% bar) | Only at 50% or below | Recovery reduced by 40% |
| Contributory negligence | Generally no | Usually barred (exceptions exist) |
Find your state's rule on our car accident laws by state page.
How is fault decided?
Usually through negotiation — and, if a case goes to trial, by a judge or jury. Insurers look at:
- The police report and any citations
- Photos of the scene and vehicle damage
- Witness statements
- Video from dashcams, traffic or security cameras
- Traffic laws — for example, who had the right of way
- Statements made at the scene or to adjusters
That is why what you say matters. An offhand "I didn't see them" can be used to raise your share of fault. Read should I talk to the other driver's insurance?
Can fault percentages be challenged?
Yes. An insurer's first estimate is not final. New evidence — a witness, a video, an expert's reconstruction — can change the picture. Attorneys regularly dispute fault assessments.
What should I do if I think I was partly at fault?
- Don't admit fault or apologize at the scene.
- Collect evidence: photos, witnesses, the police report.
- Get medical care and keep records.
- Don't give a recorded statement to the other driver's insurer before getting advice.
- Talk to an attorney — especially in a contributory negligence state.
Being partly at fault doesn't mean you have no case. Read do I have a car accident case? or start a free case review.