Is Arizona a No Fault State? What Every Driver Needs to Know After a Crash

Arizona is not a no fault state for car accidents. It is an at fault state, which means the driver who causes the collision carries financial responsibility for the injuries and property damage that follow. That driver's bodily injury liability coverage pays your medical bills and lost income, and you keep the right to sue that driver directly.

Key Takeaways

Every Arizona driver must carry liability coverage, and the state minimums often fall short after a serious collision.
Sharing part of the blame does not disqualify you from a claim. It only shrinks the amount you collect.
Evidence you gather in the first hour at the scene often decides how adjusters split fault months later.
A two year deadline under A.R.S. § 12-542 applies to most injury lawsuits, and waiting weakens your leverage.

Sep 18, 2026

Legalbid.io

Understanding Arizona At Fault System

In a fault based tort system, the responsible driver's insurance company pays for the harm that driver caused. You file your claim against their policy, and their adjuster investigates the crash before approving a single dollar.

Arizona requires every driver to carry bodily injury liability and property damage coverage. Under A.R.S. § 28-4009, those minimums sit at $25,000 for injury to one person, $50,000 for injury to two or more people, and $15,000 for property damage.

Hospital bills climb past those numbers quickly. When the at fault driver's limits run dry, your own uninsured or underinsured motorist coverage may close the gap.

Here is the part that catches people off guard. The other insurer owes you nothing until you prove their driver caused the crash, so the burden of proof sits with you from day one.

At Fault vs No Fault Insurance Comparison

Factor: Primary Insurance Carrier Billed

Arizona (At Fault State): The at fault driver's liability insurer
No Fault States: Your own insurer, regardless of who caused the crash

Factor: Personal Injury Protection PIP Requirement

Arizona (At Fault State): Not required, though optional medical payments coverage serves a similar role
No Fault States: Mandatory, PIP pays your early medical bills

Factor: Right to Sue the Fault Driver

Arizona (At Fault State): Open, you may pursue medical costs, lost wages, and pain and suffering
No Fault States: Restricted, you must first meet an injury or dollar threshold

Shared Responsibility on Arizona Roads

Fault rarely rests on one set of shoulders. Insurers and juries assign each driver a percentage, and those percentages control the money that changes hands.

Pure Comparative Negligence Explained

Arizona follows pure comparative negligence under A.R.S. § 12-2505. Your share of the blame reduces your financial recovery, but it never erases your claim.

Picture a $100,000 claim after an intersection crash. The other driver ran a red light, though you were traveling 10 miles per hour over the posted limit, so a jury assigns you 20 percent of the fault.

You collect $80,000 instead of $100,000. Arizona sets no cutoff either, so a driver found 90 percent responsible still recovers 10 percent of their damages.

Adjusters understand this rule better than most drivers do. They often work to pin extra blame on you, because every percentage point they shift lowers the check their company writes.

What to Do After an Accident in Arizona

Call 911 and ask for police at the scene. The officer's report gives every adjuster a neutral starting account of what happened.
Accept a medical evaluation even when you feel fine. Adrenaline hides whiplash and concussion symptoms for hours, and a treatment gap gives insurers an argument.
Photograph vehicle damage from several angles, plus skid marks, traffic signals, debris, road conditions, and where both cars came to rest.
Collect names, phone numbers, license plates, and insurance details from every driver involved.
Ask witnesses for contact information before they drive away. Independent accounts carry real weight when two drivers tell different stories.
Describe what happened without apologizing or guessing. A reflexive "I'm sorry" reads like an admission once an adjuster pulls your statement.
Write your own account of the crash the same day, while the sequence stays sharp in your memory.
Notify your own insurer promptly, then pause before giving the other driver's adjuster a recorded statement.

REVIEWER CREDIT:

"This post was legally reviewed and approved by Philippe Martinet, Esq., founder of Martinet Law and one of the most formidable personal injury litigators practicing in Arizona today. Mr. Martinet is not an employee or representative of Legalbid.io, he is an independent attorney and one of the distinguished legal professionals available on the platform to bid on your case directly. What makes Philippe uniquely effective in personal injury cases is a combination most attorneys simply don't have, fifteen-plus years of criminal defense experience, including deep knowledge of law enforcement procedures, traffic cases, and accident reconstruction, combined with a civil litigation career that has taken him to the Arizona Supreme Court and the U.S. Ninth and Eighth Circuit Courts of Appeals. He doesn't wait for a settlement offer. He builds the kind of case that forces one. He stands behind Legalbid.io because he believes every injured person deserves a fighting chance, and a platform where the best attorney for their case finds them, not the other way around. Learn more at martinetlaw.com"