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April 01, 2026

How Fault Works in NH Car Accident Cases

Posted in Blog

After a car accident, everyone wants to know the same thing: who was responsible? In New Hampshire, that answer to that question has significant financial consequences. The state follows a “modified comparative fault” system, which means how fault gets assigned directly affects how much compensation you can recover. Understanding how that process works gives you a clearer picture of what your personal injury claim is actually worth.

New Hampshire Is an At-Fault State

Unlike no-fault states where your own insurance covers your initial losses regardless of who caused the crash, New Hampshire operates under a traditional fault-based system. The driver who caused the accident bears financial responsibility for the resulting damages. “Fault” in this context means proving negligence; that is, a lack of reasonable care.

It is worth noting that New Hampshire is also one of the only states in the country that doesn’t require drivers to carry auto insurance. That creates its own complications when an uninsured at-fault driver is involved, which is something an experienced Londonderry car accident lawyer can help you navigate.

How Modified Comparative Fault Works

New Hampshire follows a modified comparative fault rule. You can recover damages as long as you’re found 50 percent or less at fault for the accident. If your percentage of fault exceeds 50 percent, you’re barred from recovery entirely. And whatever percentage of fault is assigned to you reduces your compensation by that same amount. See Ocasio v. Fed. Express Corp., 162 N.H. 436, 450 (2011).

So if your claim is worth $100,000 and you’re found 20 percent at fault, you recover $80,000. If you’re found 51 percent at fault, you recover nothing. Insurance companies know this rule well and use it aggressively to try and assign fault to injured claimants as a way of reducing or eliminating what they owe.

What Evidence Is Used to Establish Fault

Building a fault argument requires pulling together multiple sources of evidence, and the stronger and more consistent that evidence is, the harder it becomes for the other side to shift blame onto you.

Key evidence in New Hampshire car accident cases typically includes:

  • The official police report, which documents the responding officer’s observations and any citations issued
  • Witness statements from people who saw the crash or the events leading up to it
  • Photographs and video from the scene, including dashcam footage and nearby surveillance cameras
  • Physical evidence like skid marks, vehicle damage patterns, and road conditions
  • Cell phone records when distracted driving is suspected
  • Expert accident reconstruction analysis in complex or disputed cases

No single piece of evidence (including the police report) is decisive on its own. A legal determination of fault will look at the full scope of all available evidence.

How Insurance Companies Approach Fault

Don’t expect the at-fault driver’s insurer to accept responsibility without a fight. Adjusters are trained to look for ways to attribute some portion of fault to the injured party. They’ll review your recorded statements, scrutinize your medical history for pre-existing conditions, and analyze every available piece of evidence with the insurance company’s interests in mind.

That’s why what you say in the days immediately following an accident matters so much. Recorded statements given without legal guidance can be taken out of context and used to support a fault argument you didn’t intend to make.

When Fault Is Genuinely Disputed

Some accidents involve clear liability. Others don’t. Intersection crashes, multi-vehicle pileups, and accidents where both drivers have conflicting accounts of what happened can result in drawn-out disputes over how fault should be allocated. In those situations, accident reconstruction experts, detailed witness interviews, and aggressive legal advocacy may be necessary to secure a favorable result.

Welts, White, & Fontaine, P.C. has represented injured New Hampshire drivers for decades, building fault arguments that hold up against the tactics insurers use to minimize claims. If you were hurt in a collision and want to understand how fault is likely to be assessed in your specific situation, speaking with a Londonderry car accident lawyer is an important first step.

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