New Hampshire sets the UM recovery bar at 51 percent fault. After a hit-and-run, your claim remains valid so long as the insurer cannot assign you a majority share of blame.
How the 51-Percent Fault Bar Works in Hit-and-Run UM Claims
The 51-percent comparative fault bar blocks your hit-and-run UM claim only when your assigned fault exceeds 50 percent. At exactly 50 percent, the claim survives. This one-point difference from a 50-percent-bar state matters -- it means the insurer must show you bore the clear majority of responsibility, not merely an equal share. In a hit-and-run UM dispute, the insurer still has incentive to push your fault as high as possible. Each percentage point reduces the payout, and crossing the 51-percent line eliminates the claim entirely. The fight centers on whether your fault was truly greater than all other factors.
Building Evidence to Stay Below the 51-Percent Bar After a Hit and Run
Evidence controls the fault percentage in a hit-and-run UM claim under a 51-percent bar. Without the other driver present, your insurer relies on the police report, physical evidence, and your own statements to assign blame. Control what you can: photograph everything at the scene, secure any available video footage, and document road and weather conditions. Give the police a clear, factual account of the crash. When the insurer contacts you, treat the conversation as a recorded event -- because it likely is. Each detail you provide either anchors the fault analysis below the threshold or gives the adjuster material to push it higher.
A worked example with New Hampshire’s rule applied
Take a hit and run claim with documented losses like these:
| Medical bills | $8,400 |
| Lost wages | $3,400 |
| Other out-of-pocket costs | $1,150 |
| Pain and suffering (1.5× medical) | $12,600 |
| Gross value before fault | $25,550 |
Under New Hampshire’s 51% bar, percentages behave like a cliff edge. At 50% fault this claim still pays $12,775; at 51% it pays $0. One percentage point moves $12,775, which is why the fault number in the adjuster’s file is worth arguing about with evidence, not estimates.
Filing a UM Claim After a Hit and Run: What Your Insurer Will Not Tell You
A hit-and-run UM claim puts you in the unusual position of negotiating against your own insurance company. The insurer holds your policy, collects your premiums, and now decides how much to pay your claim. That arrangement creates a built-in conflict. The adjuster evaluates your medical records, reviews the police report, and constructs a valuation -- but the goal is to reach the lowest defensible number. Your leverage comes from thorough evidence: complete medical documentation, proof of wage loss, and a clear record of the crash that supports your version of events. If the insurer's offer falls short, most UM policies provide for arbitration rather than a traditional lawsuit as the dispute mechanism.
Before you rely on any number here
This page is general information, not legal advice. Nothing on hitandrunlawyer.us creates an attorney–client relationship, and no estimate produced by the calculator is a valuation, a prediction or an offer.
HitAndRunLawyer.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
New Hampshire questions
Does equal fault bar my hit-and-run UM claim in New Hampshire?
No. New Hampshire uses a 51-percent comparative fault bar, so equal fault -- 50 percent -- does not block your claim. You lose recovery only when your assigned fault exceeds 50 percent. At the even split, you still receive a proportionally reduced payout from your carrier.
How does New Hampshire's 51-percent bar differ from a 50-percent bar in a hit-and-run UM claim?
The difference is one percentage point at the threshold. Under a 50-percent bar, reaching exactly half fault eliminates your claim. Under New Hampshire's 51-percent standard, you must exceed half. That additional point of margin can be decisive when the insurer's fault assignment lands near the line.
What can I do if my UM insurer assigns me close to 51 percent fault in New Hampshire?
Challenge the fault assignment with evidence. Dashcam footage, scene photographs, witness testimony, and the police report all contribute to the fault calculation. If the insurer's assignment relies on assumptions rather than documented facts, raise that during negotiations. Consulting an attorney before accepting the assignment is advisable when the percentage sits near the threshold.
- 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.