Arizona Comparative Negligence Explained

Under A.R.S. § 12-2505, Arizona uses a pure comparative fault system. The statute provides that the defense of contributory negligence or assumption of risk does not bar a claimant's action — instead, the full damages are reduced in proportion to the relative degree of the claimant's fault that is a proximate cause of the injury or death.

This means there is no cutoff point. Whether you are 10% at fault, 50% at fault, or 90% at fault, you can still recover damages. The jury determines each party's percentage of fault, and your recovery is reduced by your share. A $200,000 verdict at 30% fault means you recover $140,000. At 70% fault, you recover $60,000. At 95% fault, you recover $10,000.

Pure comparative negligence is the most favorable system for injured claimants. Only a handful of states use it — including California, New York, Florida, and Arizona. Most states use modified systems with threshold bars that eliminate recovery entirely at 50% or 51% fault. Arizona's system ensures that even a mostly-at-fault plaintiff can recover something for the portion of the harm caused by someone else's negligence.

Example 1: You are rear-ended at a red light. The other driver was texting, but your brake lights were out. A jury awards $150,000 in damages and assigns you 10% fault for the brake light issue. You recover $135,000. In Arizona, even a small fault assignment results in a proportional reduction — but you still receive the vast majority of your award.

Example 2: You make an unsafe lane change and collide with a speeding driver. A jury awards $200,000 and assigns you 60% fault. You recover $80,000. In Ohio, Illinois, Indiana, or Tennessee, you would recover $0 at 60% fault because you exceed those states' threshold bars. In Arizona, you still receive a meaningful recovery.

Example 3: You run a red light and are hit by a driver going 25 mph over the speed limit. A jury awards $300,000 and assigns you 80% fault. You recover $60,000. Arizona's pure comparative negligence allows recovery even when you bear the lion's share of the blame, as long as the other party also contributed to the accident through their own negligence.

Example 4: A multi-vehicle accident involving three drivers. The jury assigns 50% fault to Driver A, 30% to Driver B, and 20% to you. On a $400,000 verdict, you recover $320,000 (reduced by your 20% fault). Under Arizona's several liability rule, Driver A pays their 50% share ($200,000) and Driver B pays their 30% share ($120,000).

Arizona's pure comparative negligence system has no threshold bar — it never eliminates your claim based on fault percentage alone. This is dramatically different from the modified comparative negligence systems used in most states in our coverage area.

Tennessee uses a 50% bar: at exactly 50% fault, you recover nothing. Ohio, Illinois, and Indiana use a 51% bar: at 51% fault, you recover nothing. In all four of these states, a plaintiff at 60% fault receives zero. In Arizona, that same plaintiff at 60% fault on a $200,000 verdict recovers $80,000.

Missouri also uses pure comparative negligence, so Missouri and Arizona are the two most claimant-friendly states in our coverage area for fault allocation. Wisconsin and Minnesota use modified systems with a 51% bar. The practical effect: Arizona accident victims have a legal safety net that does not exist in most other states. Even when you bear significant fault, you are not shut out of recovery entirely.

Under A.R.S. § 12-2505, the question of contributory negligence and assumption of risk is always a question of fact left to the jury. The jury examines all available evidence and assigns a specific percentage of fault to each party. Those percentages must total 100% across all parties.

Arizona allows fault to be allocated to nonparties under A.R.S. § 12-2506. A defendant can argue that a person not named in the lawsuit is partially at fault, which reduces the named defendants' shares. The plaintiff does not recover from nonparties — their fault percentage simply reduces the total recoverable amount from named defendants. Defendants use nonparty fault allocation strategically to dilute their own responsibility.

Police accident reports are often the starting point for fault analysis in Arizona. The responding officer's assessment, driver statements, citations issued, and noted traffic violations all factor into the fault determination. But police reports are just one piece of evidence — the jury also weighs witness testimony, dashcam footage, traffic camera recordings, security camera footage, phone records showing distracted driving, vehicle black box data, and accident reconstruction expert analysis.

Because Arizona's pure comparative negligence system reduces your recovery in direct proportion to your fault, every percentage point matters. The difference between 20% fault and 40% fault on a $300,000 verdict is $60,000. Evidence quality directly determines where that fault percentage lands.

Key evidence types include: police accident reports and citations issued, witness statements and contact information collected at the scene, dashcam and surveillance camera footage, photographs of vehicle damage and the accident scene, medical records establishing injury causation and severity, phone records (to establish distracted driving), vehicle event data recorder (black box) data, and physical evidence such as skid marks, debris patterns, and road conditions.

Preserving evidence starts at the accident scene. Photograph everything — vehicle damage, road conditions, traffic signals, skid marks, and the surrounding area. Get contact information for every witness. Do not move vehicles until photos are taken (unless safety requires it). Request the police report number before leaving the scene. In Arizona, where every fault percentage point translates directly to dollars, thorough evidence preservation at the scene is the single most valuable step you can take.

In 2006, Arizona voters passed Proposition 302, codified at A.R.S. § 12-2506, which established several liability in most cases. Under this rule, each defendant is liable only for their proportionate share of fault. If a jury assigns 60% fault to Driver A and 20% to Driver B, Driver A pays 60% of your damages and Driver B pays 20%. If Driver B is uninsured and cannot pay, you absorb that 20% loss.

Exceptions to several liability exist in narrow circumstances. Joint and several liability still applies when defendants acted in concert (A.R.S. § 12-2506(D)(1)), in cases of vicarious liability or agency relationships, and when a party acted with specific intent to cause harm. Outside these exceptions, each defendant pays only their own percentage.

The practical impact: in multi-defendant cases, your recovery depends on each defendant's ability to pay their individual share. A $500,000 verdict means little if the defendant assigned the largest share of fault has no insurance and no assets. Insurance coverage investigation early in your case is critical to understanding what recovery is actually collectible.

A.R.S. § 12-2505(A) contains one important exception to Arizona's pure comparative negligence rule: there is no right to comparative negligence in favor of any claimant who has intentionally, willfully, or wantonly caused or contributed to the injury or wrongful death.

This means if your conduct was intentional rather than negligent, you lose the protection of comparative negligence entirely. Running a red light because you were distracted is negligent — you can still recover. Deliberately causing a collision is intentional — you cannot. The line between negligent and intentional conduct is a factual question for the jury.

In practice, this exception rarely comes into play in standard accident cases. Most car accidents, slip and falls, and other personal injury claims involve negligence, not intentional conduct. The exception is more commonly relevant in cases involving assault, intentional trespass, or other deliberate acts that cross the line from carelessness to willfulness.

Even though Arizona's pure comparative negligence system never bars your claim, insurance adjusters still aggressively pursue higher fault percentages. Every additional percentage point of fault reduces the insurer's payout. Shifting your fault from 20% to 40% on a $300,000 claim saves the insurer $60,000. The fight over fault percentages is the central negotiation in most Arizona injury cases.

Common adjuster tactics include: attributing partial fault to you early in negotiations, requesting recorded statements where you might say something that implies fault, citing traffic violations you may have committed, arguing that you failed to mitigate your injuries by delaying medical treatment, and using your own social media posts against you.

Unlike in modified comparative negligence states, the adjuster's goal in Arizona is not to push your fault above a threshold to eliminate the claim entirely. Instead, the goal is to maximize your fault percentage to minimize the payout. This makes the negotiation more nuanced — there is always a settlement value to discuss, even when fault is disputed. But the dollar difference between fault percentages can be substantial.

Arizona's pure comparative negligence system means you can recover damages at any fault level below intentional conduct. But understanding how much fault the insurance company is likely to assign, and how that affects your potential recovery, requires knowing the specific facts of your case.

Get your free Injury Claim Check. You will answer a few questions about your accident and injuries, and we will provide a personalized report that includes how Arizona's comparative negligence rule applies to your situation, your filing deadline under the 2-year statute of limitations (A.R.S. § 12-542), and whether connecting with an Arizona personal injury attorney makes sense for your case. Free, confidential, and takes less time than being on hold with an insurance company.