Why the stakes spike right at 51%
Under MCA § 27-1-702, most of the time, an extra percentage point of assigned negligence simply means a slightly smaller recovery. But for a claim where the facts genuinely put fault somewhere near an even split, that same single point takes on an entirely different weight: the difference between 50% and 51% negligence in Montana isn't a gradual change, it's the difference between a real, proportional recovery and nothing at all.
A genuinely distinctive wrinkle with multiple defendants
Because Montana compares a claimant's negligence against the combined negligence of everyone being sued, rather than against any single defendant, the dynamics shift in a multi-defendant case. A single defendant's insurer may have less individual incentive to push the claimant's fault upward in isolation, since what actually matters for the 51% bar is the claimant's share against the total of all defendants combined — a genuinely different calculation than a straightforward one-on-one comparison.
Where this argument actually comes from
The building blocks of a fault argument in Montana are familiar: the narrative section of the police report, any recorded statement taken from the claimant, witness accounts, photos or video of the scene and vehicle positions, and any inconsistencies in how the incident has been described over time.
Why a recorded statement carries extra weight here
An early, informal recorded statement is worth genuine caution in any state, and the stakes in Montana are sharpened by exactly what's riding on the 51% line. A phrase that shifts an adjuster's internal fault assessment from 45% to 51% doesn't just shrink the payout — it can eliminate it entirely.
Who ultimately decides
If a case goes to trial, the jury determines both the fault percentage and, by extension, whether the 51% threshold has been crossed. In the far more common scenario of a negotiated settlement, the parties effectively work out this same comparison between themselves. See our Montana comparative negligence calculator to see exactly how sharply the outcome changes on either side of that line.