When more than one driver or company contributed to a crash, a natural assumption follows: surely any one of them can be made to pay the whole judgment. Multiple defendants liability in Arizona doesn’t actually work that way. The difference matters when one defendant has real insurance and another doesn’t.
Several liability, not joint liability
Arizona Revised Statutes § 12-2506 abolished joint and several liability for most personal injury, property damage, and wrongful death cases. Each defendant is liable only for their own percentage share of fault. A separate judgment gets entered against each one for that specific amount. Say one defendant is 70% at fault and another is 30%. The 30%-at-fault defendant generally can’t be forced to cover the other’s share, even if that other defendant can’t pay.
Why this changes strategy in a multi-defendant case
Each defendant only owes their own percentage. That makes identifying every party who contributed to a crash, and how much insurance each one actually carries, matter more than it would in a joint-liability system. A well-insured defendant found only 20% at fault doesn’t become a backstop for a poorly insured defendant found 80% at fault. This is exactly the dynamic that makes fault-tracing so important in a multi-vehicle pile-up. The trier of fact has to apportion percentages across everyone involved, not just settle on a single at-fault party.
The narrow exceptions that restore joint liability
Several liability isn’t absolute. Defendants who acted in concert can still be held jointly responsible for each other’s share. So can one who was acting as an agent or employee of another. A company whose employee caused a crash while working can be on the hook through that employment relationship, rather than through the several-liability default. These exceptions are specific. They don’t apply just because multiple parties happen to be involved in the same case.
Nonparties still get factored into the math
Arizona law allows the fault of a nonparty, someone not actually named as a defendant, to be considered when apportioning percentages, if proper notice is given before trial. That doesn’t make the nonparty liable in that case. It can reduce what a named defendant is found responsible for, though. This is one more reason a thorough investigation into everyone who contributed to a crash matters. It ties closely to the same fault analysis covered in our guide to comparative negligence in Arizona.
En resumen
Multiple defendants liability in Arizona is several, not joint, in the vast majority of cases. Each defendant answers for their own percentage of fault, not the whole judgment. That makes identifying every responsible party, and their actual insurance, a central part of building a multi-defendant claim rather than an afterthought.
Preguntas frecuentes
Usually not. Arizona law makes each defendant liable only for their own percentage of fault, not for the full amount, except in narrow circumstances.
Defendants who acted in concert, or where one was acting as an agent or employee of another, can be held jointly responsible for each other’s share of fault.
Yes. Arizona allows a nonparty’s fault to be considered when apportioning percentages, which can reduce what a named defendant is ultimately found responsible for.
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This article is general information, not legal advice, and reading it does not create an attorney–client relationship. Fault allocation among multiple defendants depends on the specific facts and evidence in your case — review them with a licensed Arizona attorney.