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Crash Fault Rules by State

The fault rule your state follows is the single most important factor in any disputed crash claim. Five categories of fault rules exist across the fifty states and the District of Columbia. Each category treats shared responsibility differently — some reduce your recovery proportionally, others impose hard cutoffs, and a few eliminate your claim if you carry any fault at all.

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Injury severity Minor2.0×Catastrophic  
Your share of the fault 0%0%100%
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Informational estimate

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Pain & sufferingMedicalLost wagesOther costs
  • Medical & future care$0
  • Lost wages$0
  • Property & out-of-pocket$0
  • Pain & suffering $0
  • Comparative fault reduction$0
  • Gross estimate$0
  • Less contingency fee (33.3%)$0
  • Illustrative net to you$0

Medical liens, health-insurance subrogation, case costs and taxes on some damage categories are not modelled here.

This is not a valuation, an offer or legal advice. Real settlement value turns on evidence, causation, venue, insurance limits, liens and negotiation. Verify every figure with a licensed attorney in your state before you accept or reject anything.

Five Categories of Crash Fault Rules

Contributory negligence states bar recovery if you carry any fault at all. Five jurisdictions follow this rule, and in those states the entire claim depends on establishing zero fault. Pure comparative fault states reduce your recovery by your fault percentage but never eliminate it, even at high percentages.

Modified comparative fault states set a threshold — either 50 or 51 percent depending on the state — above which recovery is barred entirely. Below the threshold, recovery is reduced proportionally. South Dakota stands alone with a slight/gross negligence standard that allows recovery only when your fault is classified as 'slight' compared to the other party's 'gross' negligence.

How Your Fault Rule Changes the Evidence Strategy

In a contributory negligence state, the evidence strategy is binary: prove you had zero fault or lose everything. In a pure comparative fault state, every percentage point of fault you eliminate through evidence directly increases your recovery. The fight is about degree, not survival of the claim.

Modified comparative fault states create a threshold battle. If your fault is near 50 or 51 percent, the evidence determining which side of that line you fall on controls whether you collect anything or nothing. The closer to the threshold, the higher the stakes of every photograph, witness statement, and data point. Use the state directory below to find your state's rule and understand its practical effect on crash claims.

Contributory negligence — any fault can bar the claim

Slight/gross negligence

Modified comparative — barred at 50%

Modified comparative — barred at 51%

Pure comparative — reduced, never barred

Before you rely on any number here

Legal notice

This page is general information, not legal advice. Nothing on crashlawyers.us creates an attorney–client relationship, and no estimate produced by the calculator is a valuation, a prediction or an offer.

CrashLawyers.us is an independent informational website operated by Mustafa Bilgic, an individual who is not a licensed attorney and does not run a law firm. We do not accept cases, review documents, negotiate with insurers or refer you to a particular lawyer.

Deadlines, fault rules, damage caps and insurance requirements differ by state and change over time, and a missed deadline can end a valid claim permanently. Consult a licensed attorney in your state before you accept, reject or file anything. To find one independently, use your state bar’s referral service or the American Bar Association’s Find Legal Help directory.

Questions

Fault-rule questions

What is the difference between the 50 and 51 percent fault thresholds?

States with a 51 percent bar, like your state, allow recovery at exactly 50 percent fault — your compensation is reduced by half, but you still collect. At 51 percent or above, recovery is eliminated entirely. The one-point distinction between 50 and 51 determines whether a borderline crash claim survives or is extinguished.

Does shared fault destroy my crash claim in your state?

No. your state follows pure comparative fault, meaning your claim survives at any fault level. Your recovery is reduced by your assigned fault percentage — 30 percent fault means 70 percent of total damages. The dispute is always about the size of your fault share, and evidence is what determines that number.

What happens to my crash claim if I am found even slightly at fault in your state?

Under your state's contributory negligence rule, any fault on your part eliminates your right to recover — no matter how small the percentage. A finding of one percent fault has the same effect as 99 percent fault: zero compensation. This is why the crash evidence file must support a position of zero fault from the start.

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Written and maintained by
Mustafa Bilgic — independent operator, CrashLawyers.us

Not an attorney. This page summarises publicly available law, agency data and insurance-industry practice; it is not a substitute for advice about your own claim.

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