Begin every Arizona crash with four separate maps

The driver shown on the crash report, the automobile shown on an insurance card and the policy limit initially disclosed by an adjuster are only pieces of the investigation.

Map 1 Liability

Who acted negligently or otherwise bears legal responsibility for causing the crash and resulting injury?

Map 2 Insured Status

Who qualifies as an insured under each liability, UM/UIM, MedPay or other coverage?

Map 3 Insurance

Which driver, owner, household, employer, commercial, umbrella, excess, rental or rideshare policies apply?

Map 4 Loss

What medical, income, household-service, property, noneconomic or wrongful-death damages can be proved?

The coverage investigation comes before the coverage conclusion. Find the policies and identify the insureds before deciding which limits, exclusions, offsets or anti-stacking provisions control.

Arizona requires liability insurance—but the statutory minimum is only the floor

A.R.S. §28-4009 establishes the ordinary minimum liability protection for an Arizona motor vehicle liability policy issued or renewed under the current framework.

$25,000 Bodily injury or death of one person in one accident.

$50,000 Bodily injury or death of two or more persons in one accident.

$15,000 Damage to property of others in one accident.

Permission matters The statutory owner's-policy framework includes persons using the insured vehicle with express or implied permission.

25/50/15 does not tell you how much insurance actually exists. A particular claim may involve higher primary limits, commercial insurance, employer coverage, umbrella or excess coverage, or first-party UM/UIM.

Arizona also permits a written named-driver exclusion

Section 28-4009(A)(3) allows the named insured and insurer to agree in writing that a specifically designated person is excluded as an insured when operating a motor vehicle. The actual written exclusion and its statutory compliance therefore matter.

Arizona requires the insurer to offer UM and UIM—not the insured to buy them

A.R.S. §20-259.01 creates one of the central statutory systems in Arizona automobile insurance.

UM

Uninsured Motorist Coverage

Protects qualifying insureds for bodily injury or death caused by an uninsured motorist as defined by Arizona law and the policy.

UIM

Underinsured Motorist Coverage

Applies when total damages exceed the total applicable liability limits, subject to §20-259.01 and the operative policy.

Current statutory structure: the insurer must make UM and UIM available and make the required written offer. The named insured can purchase or reject/select coverage under the statute.

The declarations page matters

Under the current text of §20-259.01, the declarations page sent to the named insured constitutes the final expression of the named insured's decision to purchase or reject UM/UIM coverage.

Do not stop with the declarations page. The complete policy, endorsements, insured definitions, statutory requirements and history of the coverage transaction can still matter to the particular coverage dispute.

Unidentified vehicle without physical contact

If a UM/UIM claim arises from an unidentified vehicle and no physical contact occurred, §20-259.01(M) requires corroborating evidence that strengthens the insured's account that the unidentified vehicle caused the accident.

Arizona stacking law is active and unusually important

The starting point is §20-259.01(H), which governs circumstances in which multiple UM/UIM policies or coverages purchased by one insured on different vehicles apply to the same accident or claim.

2023

Franklin v. CSAA

The Arizona Supreme Court held that multiple vehicles insured under one policy can provide separate UIM coverages for purposes of the statutory anti-stacking provision.

2026

State Farm v. Balzan

The Court held that multiple persons who jointly purchase multiple policies can constitute “one insured” for purposes of §20-259.01(H).

Do not ask “Can Arizona policies stack?” as an abstract question. First identify every policy and coverage. Then determine who purchased them, which vehicles they cover, whether they apply to the claimant, and whether the insurer complied with §20-259.01(H).

Arizona insurance law starts with the policy—but does not always end with literal boilerplate

The complete contract should be reconstructed before any coverage conclusion is accepted.

Declarations

Named insureds, vehicles, limits, premiums and listed coverages.

Insuring agreement

The affirmative grant of coverage for the loss or claimant.

Definitions

“Insured,” “you,” “resident,” “covered auto” and similar terms can control the result.

Exclusions

Identify every exclusion actually invoked by the insurer.

Conditions

Notice, cooperation, proof, arbitration and reimbursement provisions.

Endorsements

Amendments can materially change the standard policy language.

Darner and Gordinier matter. Arizona recognizes a limited reasonable-expectations doctrine for standardized insurance contracts. It is not permission to disregard every clear policy term; it applies in identified circumstances developed in Arizona case law.

Arizona recognizes both statutory claims-practice rules and common-law insurance bad faith

A.R.S. §20-461 identifies unfair claim settlement practices. Separate Arizona Supreme Court authority defines the insurer's common-law duty of good faith and fair dealing.

First Party

Noble / Rawlings

Arizona recognizes tort liability when an insurer intentionally denies, fails to process or fails to pay a claim without a reasonable basis and the applicable bad-faith requirements are established.

Third Party

Clearwater

When controlling settlement of a liability claim, an insurer must give equal consideration to the financial interests of its insured rather than protecting only its own policy-limit exposure.

Section 20-461 includes recurring claims-handling standards

accurate representations of coverage
reasonable and prompt communications
reasonable investigation standards
investigation based on available information
timely coverage decisions
good-faith efforts to effectuate fair settlements where liability is reasonably clear

A regulatory violation and a common-law bad-faith tort are not the same cause of action. Each requires analysis under its own legal source.

Arizona separates claimant fault from defendant allocation

Two statutes perform different jobs: §12-2505 reduces the claimant's damages for comparative fault, while §12-2506 allocates responsibility among defendants and properly designated nonparties.

Rule	Arizona effect
Claimant fault	Under §12-2505, ordinary contributory negligence does not automatically bar recovery; damages are reduced proportionally.
51% claimant fault	Arizona does not use the ordinary modified-comparative-fault 50/51% bar found in many states.
Defendant responsibility	Under §12-2506, each defendant is generally liable only for the percentage of recoverable damages allocated to that defendant.
Nonparty fault	Properly identified nonparties can be included in the percentage allocation even though no judgment is entered against them.
Exceptions	Section 12-2506 retains specific exceptions including acting in concert and agency/servant responsibility.

Fault percentages affect collectability. In a several-liability system, identifying every responsible actor is not merely theoretical. Fault assigned to a nonparty can reduce what is recoverable from the defendants who remain in the case.

The vehicle's use can change the entire insurance system

Borrowed or rental vehicle

Determine ownership, permission, rental-contract terms, personal insurance, rental coverage and federal/statutory rules.

Work vehicle

Build both the tort map and insurance map: employee, employer, commercial auto, permissive use, umbrella and excess.

Rideshare / TNC

Reconstruct the exact app timeline. Arizona's §28-4038 coverage requirements change according to whether the driver was merely logged in, providing services or carrying a passenger.

Government vehicle

The liability investigation must immediately include Arizona's special notice-of-claim and limitations statutes.

Arizona TNC law makes digital evidence central. Section 28-4038 requires cooperation regarding the precise times the driver logged on and off the TNC digital network during the relevant twenty-four-hour period.

Damages are measured separately from insurance limits

The existence of a $25,000 liability policy does not mean the injury is worth $25,000. Tort damages and available insurance answer different questions.

Medical loss

Past and future treatment must be connected to the crash and supported by legally sufficient evidence.

Income loss

Past earnings and future earning capacity require separate proof.

Household services

Injury can create economic loss even when necessary services were previously unpaid.

Noneconomic loss

Physical pain, emotional harm and loss of normal life require individualized evidence rather than a mechanical formula.

Property damage

Vehicle repair, total loss, loss of use and related property issues follow their own proof rules.

Wrongful death

A.R.S. §§12-611–12-613 create a separate statutory action when the crash causes death.

Wrongful death plus UM/UIM requires an extra check. Section 20-259.03 limits UM/UIM wrongful-death recovery to a statutory wrongful-death claimant who is also a surviving insured under the applicable coverage, unless the estate provision applies.

Arizona has a distinctive statutory MedPay lien

MedPay is first-party automobile medical coverage. Arizona does not treat every MedPay payment as automatically reimbursable from a later tort recovery.

A.R.S. §20-259.01(J): an automobile insurer that makes qualifying MedPay payments may assert a statutory lien concerning the amount paid above $5,000 if it complies with the statutory perfection requirements.

60-day recording requirement

The statutory lien procedure requires recording within the prescribed period after a payment exceeding the statutory threshold.

Fair and equitable compromise

The statute expressly requires the insurer to compromise its lien in a fair and equitable manner.

Do not treat every medical reimbursement claim as the same lien. MedPay, health insurance, ERISA, AHCCCS, Medicare, workers' compensation and medical-provider claims require separate legal analysis.

Arizona deadlines can change dramatically depending on the defendant

Claim	General Arizona rule
Ordinary personal injury	A.R.S. §12-542 generally provides a two-year limitations period, subject to accrual and specialized rules.
Wrongful death	Section 12-542 generally provides two years, with the statutory wrongful-death claim accruing at death.
Property damage	Section 12-542 generally supplies the two-year period identified by the statute for injury to property.
Public entity / employee — notice	A.R.S. §12-821.01 generally requires a compliant notice of claim within 180 days after accrual.
Public entity / employee — lawsuit	A.R.S. §12-821 generally requires the action to be filed within one year after accrual.

Government vehicle crash: do not calendar only two years. A claim against an Arizona public entity or employee can be barred long before the ordinary tort limitations period would expire.

Arizona crash-law workflow

Preserve the crash evidence. Photograph the vehicles and scene, identify witnesses, preserve video, electronic vehicle data and communications, and obtain the crash report.

Identify every person and entity that may bear fault. Driver, vehicle owner, employer, business, TNC, public entity, product manufacturer or other responsible actor.

Determine whether any public entity or employee is involved. If so, immediately calendar §12-821.01 and §12-821.

Obtain every liability policy. Do not stop with the policy identified on the crash report.

Determine insured status policy by policy. Named insured, permissive user, household member and first-party insured status can differ.

Locate every UM/UIM policy. Identify all vehicles, policies, household coverages and possible stacking issues.

Read the entire policy and endorsements. Reconstruct the coverage before accepting an exclusion or limitation.

Build the fault allocation. Identify claimant fault, defendant fault and properly supportable nonparty fault under §12-2506.

Document the complete damages. Medical, earnings, household services, future loss, noneconomic damage, property and wrongful death where applicable.

Audit medical-payment and reimbursement claims. Separate Arizona MedPay liens from other health-plan, government and provider reimbursement systems.

Evaluate total damages against total available insurance. Liability limits are a collectability issue—not the legal measure of the injury.

Protect remaining claims before settlement. Identify every claimant, defendant, UM/UIM policy, reimbursement obligation and released party before executing a final release.

Arizona crash file checklist

crash report
scene photographs
vehicle photographs
witness information
dashcam / surveillance video
EDR / telematics data
driver insurance card
vehicle registration
complete liability policy
all declarations pages
policy endorsements
named-driver exclusions
UM/UIM selection records
household policies
umbrella / excess policies
employer insurance
commercial auto policy
TNC app records
rental agreement
medical records
medical bills
health-plan EOBs
MedPay ledger
lien notices
wage-loss records
tax / income records where relevant
property-damage estimates
total-loss valuation
claim correspondence
coverage letters
settlement demands
proposed releases
government notice of claim if applicable

Arizona authority map

Primary Law · A.R.S. §28-4009 Motor vehicle liability policy requirements

Establishes Arizona's current ordinary 25/50/15 minimum liability limits, permissive-user protection and named-driver exclusion framework.

Primary Law · A.R.S. §20-259.01 UM/UIM, stacking, subrogation and MedPay lien

Arizona's central statutory automobile first-party coverage system, including UM/UIM offer requirements, stacking rules, unidentified vehicle corroboration and MedPay liens.

Arizona Supreme Court · 2023 Franklin v. CSAA General Insurance Co., 255 Ariz. 409

Holds that vehicles insured under one policy can create separate UIM coverages for purposes of §20-259.01(H)'s stacking limitation.

Arizona Supreme Court · 2026 State Farm Mutual Automobile Insurance Co. v. Balzan

Holds that multiple insured individuals who jointly purchase multiple policies can constitute “one insured” under §20-259.01(H).

Primary Law · A.R.S. §12-2505 Comparative negligence

Reduces recoverable damages proportionately for claimant fault rather than imposing the ordinary 50/51% comparative-fault bar used in many jurisdictions.

Primary Law · A.R.S. §12-2506 Several liability and nonparty fault

Generally limits each defendant to that defendant's proportionate share of recoverable damages and permits allocation to qualifying nonparties, subject to statutory exceptions.

Arizona Supreme Court Darner Motor Sales, Inc. v. Universal Underwriters Insurance Co., 140 Ariz. 383 (1984)

Foundational Arizona insurance-contract and reasonable-expectations authority; also recognizes the insurance producer's duty of reasonable care in procuring insurance.

Arizona Supreme Court Gordinier v. Aetna Casualty & Surety Co., 154 Ariz. 266 (1987)

Defines the limited circumstances in which Arizona's reasonable-expectations doctrine can affect standardized insurance provisions even where policy language is facially unambiguous.

Arizona Supreme Court Noble v. National American Life Insurance Co., 128 Ariz. 188 (1981)

Recognizes Arizona's first-party tort claim for an insurer's bad-faith refusal or failure to process or pay a covered claim without a reasonable basis.

Arizona Supreme Court Rawlings v. Apodaca, 151 Ariz. 149 (1986)

Develops the implied covenant of good faith and fair dealing in the insurer-insured relationship and explains the insurer's obligation to protect the benefits and interests arising from that relationship.

Arizona Supreme Court Clearwater v. State Farm Mutual Automobile Insurance Co., 164 Ariz. 256 (1990)

Leading Arizona automobile third-party bad-faith authority applying the equal-consideration rule to settlement decisions that expose the insured to an excess judgment.

Arizona Supreme Court Wilks v. Manobianco, 237 Ariz. 443 (2015)

Holds that statutory compliance with Arizona's UM/UIM offer process does not automatically extinguish a distinct common-law claim for negligent failure to procure requested UIM coverage.

Arizona Supreme Court · 2024 Satamian v. Great Divide Insurance Co.

Confirms that a negligent-procurement claim requires actual, appreciable harm before the claim accrues.

Primary Law · A.R.S. §20-461 Unfair claim settlement practices

Identifies prohibited recurring claims practices involving misrepresentation, communications, investigation, coverage decisions and settlement conduct.

Primary Law · A.R.S. §§12-821 & 12-821.01 Public entity claims

Establishes Arizona's short notice-of-claim and lawsuit deadlines for claims against public entities and public employees.

Primary Law · A.R.S. §§12-611–12-613 Wrongful death

Establishes the Arizona wrongful-death cause of action, statutory claimant structure and damages framework.

Primary Law · A.R.S. §20-259.03 Wrongful death UM/UIM insured-status rule

Limits UM/UIM wrongful-death recovery to statutory wrongful-death claimants who also qualify as surviving insureds, subject to the statute's estate provision.

Primary Law · A.R.S. §28-4038 Transportation Network Company insurance

Establishes Arizona TNC insurance requirements according to driver app and passenger status and requires information exchange during coverage investigations.

Source-control rule: Arizona statutes, the actual insurance contract and controlling Arizona Supreme Court authority come before an adjuster's interpretation, a secondary summary or another state's insurance law.

Frequently asked questions

What are Arizona's minimum auto liability limits?

For ordinary policies under the current §28-4009 framework, the minimum is $25,000 for bodily injury or death of one person, $50,000 for two or more persons, and $15,000 for property damage.

Does Arizona require drivers to buy UM and UIM?

Arizona requires insurers writing covered automobile liability policies to make UM and UIM available and make the statutory offer. The named insured can purchase or reject/select the coverage under §20-259.01.

Can Arizona UM/UIM coverage stack?

Potentially. Section 20-259.01(H), Franklin and the 2026 Balzan decision make the answer depend on the number of applicable policies or coverages, who purchased them, the vehicles insured, the policy language and statutory compliance.

Is Arizona a 50% comparative-fault state?

No. For ordinary negligence, Arizona uses pure comparative negligence under §12-2505. A claimant's recovery is generally reduced according to the claimant's percentage of fault rather than barred simply because that percentage exceeds 50%.

Can fault be assigned to someone who is not a defendant?

Yes, when Arizona's statutory and procedural requirements are met. Section 12-2506 permits qualifying nonparty fault to be considered in allocating responsibility.

Does every Arizona defendant have to pay the entire judgment?

No. Arizona generally uses several liability under §12-2506, so a defendant ordinarily bears only that defendant's percentage of recoverable damages. The statute contains specified exceptions.

Can an Arizona insurance company exclude a household driver?

Section 28-4009 permits a written named-driver exclusion for a specifically designated person. The actual exclusion and current Arizona authority must be reviewed before deciding its effect.

Does Arizona recognize insurance bad faith?

Yes. Arizona Supreme Court cases including Noble, Rawlings and Clearwater define first-party and third-party insurer good-faith obligations.

How long do I generally have to bring an Arizona crash claim?

Section 12-542 generally provides a two-year period for ordinary personal-injury and property-damage claims, but specialized statutes, accrual rules and defendants can impose different deadlines.

What if an Arizona government vehicle caused the crash?

Act immediately. Section 12-821.01 generally requires a compliant notice of claim within 180 days after accrual, and §12-821 generally requires the lawsuit within one year.

Does Arizona MedPay have to be repaid?

Arizona has a specific MedPay lien statute. Section 20-259.01(J) permits a qualifying lien concerning MedPay amounts above $5,000 if the insurer satisfies the statutory requirements, and the lien must be compromised in a fair and equitable manner.

Can every wrongful-death beneficiary collect UM/UIM benefits?

Not automatically. Section 20-259.03 requires the wrongful-death claimant to qualify under §12-612 and also be a surviving insured under the same UM/UIM coverage, unless the statutory estate provision applies.

What should I do first after an Arizona crash?

Preserve the evidence, identify every potentially responsible person and entity, determine whether a government defendant is involved, find every applicable insurance policy and then build the damages and fault analysis.

← Arizona Library Return to the Arizona 23-guide index.

Guide 01 Arizona State Overview

Guide 02 → Required Auto Insurance & Minimum Limits

An Arizona crash should produce a coverage map—not merely a claim number.

Identify every responsible actor. Find every policy. Determine insured status under each coverage. Preserve UM/UIM and stacking issues. Allocate claimant, defendant and nonparty fault. Document the full loss. Audit reimbursement obligations. Only then compare the legally compensable loss with the insurance available to satisfy it.

Public legal education only. VictimsGuide.com provides public-interest legal education. It does not provide individualized legal advice, does not offer or accept legal representation, and does not create an attorney-client relationship. Arizona automobile claims depend on their facts, insurance contracts, insured status, parties, comparative fault, damages, reimbursement obligations, deadlines and current Arizona law. Verify all controlling primary authority before legal reliance.