Arizona Car Accident Laws: Fault, Insurance, and Your Claim

Arizona is an at-fault (tort) state that follows pure comparative negligence, so the driver who caused the crash is responsible for injuries and property damage, your recovery is reduced by your own percentage of fault, but you are never barred from recovering even if you were mostly to blame.

Is Arizona a no-fault or at-fault state?

Arizona is a traditional at-fault (tort) state. It is not one of the twelve no-fault or PIP-mandatory states. When a crash happens, the driver who caused it (and that driver's liability insurer) is responsible for the other party's injuries and property damage. An injured person may file a claim directly against the at-fault driver's insurer or file a lawsuit in court for all categories of damages, including pain and suffering, lost wages, and future medical expenses.

There is no personal injury protection (PIP) requirement in Arizona and no statutory injury threshold that must be cleared before a claimant may seek non-economic damages. Arizona law under A.R.S. § 28-4009 mandates only third-party bodily-injury and property-damage liability coverage. First-party medical coverage such as MedPay is available voluntarily but is not required by statute.

Because the fault system is pure tort, the speed and completeness of your recovery depend heavily on identifying and proving the other driver's fault. Documenting the scene, gathering witness contacts, and obtaining the police report are therefore especially important steps after any Arizona collision.

How fault is shared: Arizona's negligence rule

Arizona follows pure comparative negligence under A.R.S. § 12-2505. Under this rule, each party's recovery is reduced in proportion to their own percentage of fault, but no claimant is ever completely barred from recovering damages, even if they were more than 50% at fault for the crash.

For example, if a jury finds your total damages are $100,000 and you were 30% at fault, you recover $70,000. If you were 70% at fault, you still recover $30,000. This is more favorable to injured claimants than the "modified" comparative fault rules used in many other states, which cut off recovery once a plaintiff reaches 50% or 51% of fault.

The practical effect is that insurers and juries focus intensely on apportioning fault between all parties. Even if you bear significant responsibility for the crash, you retain the right to seek compensation from other at-fault parties. An attorney can help make sure your percentage of fault is not overstated during settlement negotiations or litigation.

Minimum car insurance in Arizona

Arizona law requires every motor vehicle owner to maintain minimum liability insurance under A.R.S. § 28-4009. The current minimums for policies issued or renewed on or after July 1, 2020, are: $25,000 for bodily injury per person, $50,000 for bodily injury per accident, and $15,000 for property damage, commonly written as 25/50/15. These limits replaced the prior 15/30/10 minimums, though those older limits may still apply to certain self-insurance certificate holders.

Financial responsibility for all motor vehicles is also mandated under A.R.S. § 28-4135. Driving without insurance in Arizona can result in license suspension, fines, and vehicle impoundment.

Uninsured and underinsured motorist (UM/UIM) coverage is not required, but insurers must offer it to you in writing under A.R.S. § 20-259.01. You may purchase UM/UIM coverage up to the same limits as your liability coverage or reject it; your policy declarations page records that decision. Given that Arizona has a significant uninsured-driver population, carrying UM/UIM is strongly recommended. If the at-fault driver has no insurance or too little insurance to cover your damages, your own UM/UIM policy fills the gap.

How long you have to file: the statute of limitations

A.R.S. § 12-542 sets a two-year statute of limitations for personal-injury and wrongful-death actions in Arizona, running from the date the cause of action accrues, typically the date of the accident. Miss that deadline and your lawsuit will almost certainly be dismissed, regardless of how clear the other driver's fault was.

Property-damage claims follow the same two-year period under A.R.S. § 12-542.

Claims involving a city, county, state agency, or other government defendant carry much shorter deadlines. A notice of claim must be filed with the relevant government entity within 180 days of the incident under A.R.S. § 12-821.01, and any lawsuit must be filed within one year under A.R.S. § 12-821. Missing the 180-day notice requirement is typically fatal to any government-entity claim.

Because evidence fades and witnesses become harder to locate over time, it is wise to consult an attorney well before either deadline expires. For a broader look at Arizona's civil filing deadlines, see the Arizona statute of limitations page.

What an Arizona car accident claim is worth

The value of an Arizona car accident claim depends on economic damages (medical bills, future treatment, lost wages, lost earning capacity, property damage), non-economic damages (pain and suffering, emotional distress, loss of enjoyment of life), and in rare cases punitive damages for extreme misconduct.

Because Arizona follows pure comparative negligence, your award is reduced by your share of fault. A claim worth $200,000 in total damages is worth $160,000 if you were 20% at fault. Insurance policy limits also cap the practical recovery: if the at-fault driver carries only the minimum 25/50/15 limits, collecting more than $25,000 per person requires pursuing your own UM/UIM coverage, any excess liability coverage, or the driver's personal assets.

Soft-tissue injuries typically settle for lower amounts than fractures, surgeries, or permanent impairment. Documented treatment records and a clear chain of medical causation are among the strongest predictors of claim value. Use the Arizona car accident settlement calculator for a preliminary estimate, and consult a licensed Arizona attorney before accepting any insurer offer.

What to do after a car accident in Arizona

Step 1: Safety first. Move vehicles out of traffic if safely possible and check everyone for injuries. Call 911 if anyone is hurt or if property damage is significant.

Step 2: Report the crash. Arizona law requires drivers to report accidents involving injury, death, or property damage above a minimum threshold to local law enforcement. A police report creates an official record that is valuable for insurance and litigation purposes.

Step 3: Document everything. Photograph the scene, vehicle positions, damage, skid marks, traffic controls, and any visible injuries. Get the names, contact information, and insurance details of all drivers and witnesses.

Step 4: Seek medical attention promptly. Adrenaline can mask pain after a crash. Seeing a doctor or going to urgent care the same day documents the link between the accident and your injuries. Gaps in treatment are commonly used by insurers to minimize claim value.

Step 5: Notify your insurer. Report the crash to your own insurance company even if you were not at fault. Failure to report can affect coverage. Be factual but cautious; avoid making recorded statements to the other driver's insurer without legal advice.

Step 6: Consult an attorney before settling. Arizona's pure comparative negligence rule means insurers may try to shift blame to you to reduce their payout. An attorney can assess fault allocation, identify all available insurance coverages (including UM/UIM and umbrella policies), and negotiate a fair settlement. Personal-injury attorneys typically work on contingency, so there is no upfront cost.

Related resources: Arizona hit-and-run laws | Car accident laws by state | Arizona car accident settlement calculator

This article is general legal information, not legal advice. Car accident law varies by state and changes, and settlement values depend on the specific facts. For advice about a specific crash, consult a licensed attorney in Arizona.

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Sources

• A.R.S. § 28-4009: Minimum motor vehicle liability insurance limits
• A.R.S. § 28-4135: Motor vehicle financial responsibility
• A.R.S. § 20-259.01: Uninsured and underinsured motorist coverage offer requirement
• A.R.S. § 12-542: Two-year statute of limitations for personal injury
• A.R.S. § 12-2505: Pure comparative negligence
• A.R.S. § 12-821.01: 180-day notice of claim for government defendants
• A.R.S. § 12-821: One-year suit deadline for government defendants