Why Your State's Fault Rule Controls Your Claim
The fault rule in your state determines three things about your car accident claim: whether you can file a third-party demand against the other driver's insurer, how much your recovery shrinks if you share some blame, and whether a fault threshold eliminates your claim entirely. These rules do not affect first-party claims the same way — collision and medical payments coverage generally pay regardless of who caused the crash.
The distinction matters because most car accident victims file both types of claims. First-party coverage handles immediate vehicle repair and medical costs. The third-party claim seeks full compensation from the at-fault driver's liability insurer. The fault rule governs that second claim, and it varies dramatically from state to state.
Five Categories of State Fault Rules
Every state falls into one of five categories:
- Contributory negligence — any fault on your part bars your third-party claim entirely (AL, DC, MD, NC, VA).
- Pure comparative fault — your fault percentage reduces your recovery but never eliminates it, even at 99 percent fault (AK, AZ, CA, KY, LA, MS, MO, NM, NY, RI, WA).
- Modified comparative (50% bar) — your claim is barred at 50 percent fault or above (AR, CO, GA, ID, KS, ME, ND, NE, TN, UT, WV).
- Modified comparative (51% bar) — your claim is barred when your fault exceeds 50 percent (CT, DE, FL, HI, IL, IN, IA, MA, MI, MN, MT, NV, NH, NJ, OH, OK, OR, PA, SC, TX, VT, WI, WY).
- Slight/gross (SD only) — recovery requires that your negligence was 'slight' compared to the other party's 'gross' negligence.
Select your state below to see how its fault rule affects every stage of your car accident claim.
Contributory negligence — any fault can bar the claim
Slight/gross negligence
Modified comparative — barred at 50%
Modified comparative — barred at 51%
- Connecticut
- Delaware
- Florida
- Hawaii
- Illinois
- Indiana
- Iowa
- Massachusetts
- Michigan
- Minnesota
- Montana
- Nevada
- New Hampshire
- New Jersey
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- South Carolina
- Texas
- Vermont
- Wisconsin
- Wyoming
Pure comparative — reduced, never barred
Before you rely on any number here
This page is general information, not legal advice. Nothing on caraccidentclaimlawyer.us creates an attorney–client relationship, and no estimate produced by the calculator is a valuation, a prediction or an offer.
CarAccidentClaimLawyer.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-percent bar and the 51-percent bar?
The 50-percent bar blocks recovery when your fault reaches 50 percent. The 51-percent bar blocks recovery when your fault exceeds 50 percent. Under the 51-percent rule, a claimant found exactly 50 percent at fault can still recover — reduced by half — while a claimant at 51 percent recovers nothing from the third-party claim.
How does my fault percentage affect my claim payout under pure comparative fault?
Your fault percentage directly reduces your third-party recovery. If the adjuster assigns you 30 percent fault, you recover 70 percent of your total damages. No fault level — even 99 percent — eliminates your right to file and recover on the claim. The negotiation is about the size of the reduction, not whether you can recover.
Can I file a third-party claim if I share any fault in a contributory negligence state?
Under contributory negligence, any fault attributed to you bars your entire third-party claim against the other driver's insurer. You may still file a first-party claim under your own collision or medical payments coverage, because those claims follow your policy contract rather than the fault rule. Getting legal counsel before providing any statement is critical in these states.
- Sources: state comparative-fault statutes · Insurance Information Institute · Bureau of Labor Statistics · IRS Pub. 4345 · NHTSA
- Last reviewed 2026-08-25. Statutes, caps and fault rules change — re-check anything time-sensitive with a licensed attorney.