Why being partly to blame rarely ends your Phoenix injury case — and the two-year clock you can't ignore
By John Quigley · Updated June 17, 2026
After a serious car crash on I-10 or a slip-and-fall at a Phoenix grocery store, the first thing an insurance adjuster often tries to do is pin some of the blame on you. They know that in many states, even a small share of fault can sharply cut — or completely destroy — a claim. What most Arizona accident victims don't realize is that Arizona is one of the most claimant-friendly states in the country on this exact point. Under A.R.S. §12-2505, Arizona follows a "pure comparative fault" rule, which means being partly responsible for your own injury reduces what you collect but, in almost every case, does not bar you from recovering at all.
This guide explains how comparative fault actually works in Maricopa County, how juries and adjusters assign percentages of blame, the deadlines that govern your claim under A.R.S. §12-542, and the special 12-year limit on product-related injuries under A.R.S. §12-551. Understanding these rules before you talk to an insurer can be the difference between a fair settlement and a lowball offer.
Arizona's comparative fault statute, A.R.S. §12-2505, provides that the fault of a claimant does not bar recovery — it simply reduces the amount of damages "in proportion to the percentage of fault" attributed to that claimant. This is the defining feature of a "pure" comparative negligence system. There is no cutoff. A driver found 80% responsible for a collision can still recover 20% of their damages.
Contrast this with "modified" comparative fault states, where an injured person who is 50% or 51% at fault recovers nothing. Arizona rejected that approach. The only meaningful exception in the statute is for a claimant whose injury was caused by their own intentional, willful, or wanton conduct — for example, someone hurt while committing a serious crime. Ordinary carelessness, even a lot of it, does not eliminate your claim.
When a personal injury case is tried in Maricopa County Superior Court, the jury doesn't just decide who wins. It assigns a percentage of fault to each party — and, importantly, to "non-parties at fault" identified under A.R.S. §12-2506. Arizona abolished joint liability for most cases, meaning each defendant pays only its own share of fault rather than being on the hook for the entire judgment. A defendant who wants to point the finger at someone not in the lawsuit (another driver, a contractor, a property manager) must formally name that non-party early in the case.
The same framework drives settlement negotiations, even though the vast majority of Phoenix-area injury claims never reach a jury. Adjusters and attorneys negotiate around the fault percentages a jury would likely assign, drawing on police reports, traffic-camera footage, scene photos, witness statements, and accident-reconstruction analysis. This is why preserving evidence quickly — and being careful about what you say to an insurer — matters so much.
Comparative fault shows up constantly in everyday Arizona accidents. A few examples our network of Arizona personal injury attorneys see regularly:
In each of these, the key question is not simply "who was at fault" but "what percentage." That single number, multiplied against your total damages, determines what you actually take home.
Comparative fault only matters if you file in time. Under A.R.S. §12-542, the statute of limitations for most personal injury and wrongful death claims in Arizona is two years from the date of injury. Miss that deadline and the strength of your case becomes irrelevant — the court will dismiss it regardless of how clearly the other side was to blame.
A few critical wrinkles apply in the Phoenix metro:
| Type of claim | Deadline | Statute / rule |
|---|---|---|
| Standard injury (car accident, slip-and-fall) | 2 years from injury | A.R.S. §12-542 |
| Claim against a city, county, or the State | Notice of claim in 180 days; suit in 1 year | A.R.S. §12-821 / §12-821.01 |
| Injury to a minor | 2 years, generally tolled until age 18 | A.R.S. §12-502 |
| Product-related injury | 2-year limit + 12-year repose | A.R.S. §12-542 / §12-551 |
The government deadline trips up many people. If your injury involved a City of Phoenix bus, a Maricopa County vehicle, or a dangerous public roadway, you must serve a written notice of claim within 180 days — far shorter than the two-year window — or the claim is barred.
If your injury was caused by a defective product — a faulty airbag, a malfunctioning power tool, a defective tire that failed on the I-10 — comparative fault under A.R.S. §12-2505 can still apply to reduce your recovery. But product claims face an additional and very different limit. A.R.S. §12-551 creates a 12-year "statute of repose": a product liability action must generally be commenced within twelve years after the product was first sold for use or consumption.
The difference between a statute of limitations and a statute of repose matters. The two-year limitation clock under §12-542 starts when you are injured. The 12-year repose clock under §12-551 starts when the product was first sold — even if you weren't injured until much later. A defect that surfaces 13 years after a product hit the market may be time-barred under the repose statute even if you sue within two years of getting hurt. There are narrow exceptions, so anyone with a product-related injury in the Phoenix area should have an attorney evaluate both clocks immediately.
Because every percentage point of fault directly reduces your recovery, the work an attorney does early in the case — gathering evidence, lining up witnesses, retaining experts, and managing communications with insurers — has an outsized effect on the final number. A 10% swing in the assigned fault percentage on a $200,000 claim is worth $20,000.
Insurance carriers know this, which is why their adjusters work hard to inflate the injured person's share of blame and to dispute the value of damages. A well-prepared claim, built before memories fade and evidence disappears, is the most effective counter. In Maricopa County, where dockets are busy and defense firms are experienced, that preparation is what separates a fair outcome from a discounted one.
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