New Hampshire eliminates your auto injury recovery at the fifty-one-percent fault mark, which means your medical records and crash documentation must establish the other driver as the primary cause.
How the Fifty-One-Percent Fault Bar Affects Your Injury Claim
The fifty-one-percent fault bar creates a sharp dividing line in auto injury cases. Below it, your documented treatment expenses, pain, and recovery costs are multiplied by the other driver's fault percentage and paid. Above it, your medical records and every dollar you spent on treatment produce no legal recovery.
This threshold means your injury claim has two battlefronts. Medical providers generate the documentation that sets the claim value. Crash evidence and fault analysis determine whether that value survives. An insurer that cannot dispute your treatment costs can still eliminate the claim by proving your fault share exceeds fifty percent — a cheaper and frequently attempted strategy.
Building Evidence to Stay Below the Fifty-One-Percent Fault Line
The fifty-one-percent line gives you one additional percentage point of breathing room compared to a fifty-percent bar state, but that margin disappears quickly in a contested case. Insurers recognize that pushing your fault just past the midpoint eliminates their entire financial obligation.
Protect your position by building parallel documentation tracks. Your medical records — imaging results, treatment notes, therapy milestones — set the compensation baseline. Your crash evidence — scene photographs, dashcam footage, witness accounts — anchors your fault share below the bar. Neither track alone is sufficient. Strong medical records paired with weak fault evidence still leaves the insurer room to argue majority fault and erase your claim at the threshold.
A worked example with New Hampshire’s rule applied
Take a auto injury claim with documented losses like these:
| Medical bills | $11,700 |
| Lost wages | $1,900 |
| Other out-of-pocket costs | $2,400 |
| Pain and suffering (1.5× medical) | $17,550 |
| Gross value before fault | $33,550 |
Under New Hampshire’s 51% bar, percentages behave like a cliff edge. At 50% fault this claim still pays $16,775; at 51% it pays $0. One percentage point moves $16,775, which is why the fault number in the adjuster’s file is worth arguing about with evidence, not estimates.
Why Your Treatment Records Drive Your Auto Injury Claim
Adjusters evaluate auto injury claims by reading medical records, not by listening to descriptions of pain. Your diagnostic imaging, specialist referrals, physical therapy progress notes, and prescription history form the factual basis for your claim in New Hampshire. Gaps in this record weaken your case. Inconsistencies invite challenges.
Begin treatment within forty-eight hours of the crash. Tell each provider you were in a motor vehicle collision and describe every area of discomfort, even minor complaints. Attend follow-up appointments as scheduled. If you must cancel, reschedule immediately. Ask your doctors to document functional limitations — what you cannot do because of the injury — rather than recording only a generic pain complaint.
Before you rely on any number here
This page is general information, not legal advice. Nothing on autoinjuryattorney.us creates an attorney–client relationship, and no estimate produced by the calculator is a valuation, a prediction or an offer.
AutoInjuryAttorney.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
What is the difference between a fifty-percent and fifty-one-percent fault bar?
Under a fifty-one-percent bar, you retain your claim at exactly fifty percent fault — one percentage point of additional room compared to a fifty-percent bar state. At fifty-one percent or above, your claim is barred. This narrow difference can be decisive in closely contested fault cases.
Does New Hampshire's fault rule apply to all auto injury claims?
The modified comparative fault rule generally applies to negligence-based auto injury claims in New Hampshire. Certain claim types — such as those involving intentional conduct or strict liability — may follow different rules. Your specific circumstances and the facts of your crash determine which legal standard governs your case.
What evidence keeps my fault below fifty-one percent?
Scene photographs, dashcam footage, witness accounts, and the police report build the fault case. Your medical records prove damages and support causation. Together, they create a factual record that resists the insurer's effort to push your share past the fifty-one-percent line where your claim would be barred.
- 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.