Usually Nevada's. Arizona and Nevada both use the same basic test, taken from the Restatement (Second) of Conflict of Laws: for personal injuries, the law of the state where the injury happened applies unless another state has a more significant relationship to the specific issue and the parties. So an Arizona resident hurt in a Las Vegas crash should generally expect Nevada law. That can shift, issue by issue and defendant by defendant, when a claim is really centered in Arizona.
It matters because the two states treat shared fault very differently. Nevada bars recovery once your fault goes above 50%. Arizona reduces your award but never bars it. The same injury can be worth something under one state's law and nothing under the other's. Here's how the choice gets made and what can change it.
What Is the General Rule for Which State's Law Applies?
The place of injury. Both states follow the Restatement (Second) approach. The Restatement's general principle for torts, § 145, applies the law of the state with the most significant relationship to the occurrence and the parties. Its personal injury rule, § 146, presumes that's the state where the injury happened.
Nevada adopted this approach in General Motors Corp. v. Eighth Judicial District Court (2006). Arizona courts have followed the same Restatement sections for decades, as an Arizona Court of Appeals decision applying §§ 145 and 146 explains.
The General Motors case is almost exactly the question in this article. Heather Simmons, an Arizona resident, was driving on I-15 in southern Nevada when she lost control on spilled diesel fuel and her car rolled over. She sued General Motors and the Arizona dealership that sold her the car. The Nevada Supreme Court held that Nevada law applied to her claims against General Motors, because the crash happened in Nevada and GM had no relationship with Arizona.
What Can Shift the Law to Arizona?
A stronger connection to Arizona on a particular issue. In the same case, the Nevada Supreme Court applied Arizona law to Simmons' claims against the Arizona dealership. Both were Arizona residents, the sale happened in Arizona, and their relationship was centered there. The court specifically pointed to Arizona's comparative fault rule as a policy Arizona had an interest in applying.
Courts look at these contacts:
| Contact | Points Toward Nevada When | Points Toward Arizona When |
|---|---|---|
| Where the injury happened | The crash or fall was in Nevada | The injury was in Arizona |
| Where the conduct happened | The careless act was in Nevada | The defective sale or decision happened in Arizona |
| Where the parties live or do business | The defendant is Nevada-based | Both parties are Arizona residents or businesses |
| Where the relationship is centered | No prior relationship, or one based in Nevada | A contract, sale, or other relationship formed in Arizona |
Two points make this less predictable than it sounds. First, the analysis runs issue by issue and defendant by defendant, so one case can end up with both states' laws. Second, the Nevada Supreme Court said the party trying to move away from the place-of-injury rule has to present evidence of the other state's relationship to the occurrence and the parties. Without that evidence, the place of injury controls.
Does it matter which state you file the lawsuit in?
It can. Each court applies its own choice-of-law rules, although Arizona and Nevada use the same Restatement framework. Where you can file also depends on where the defendant can be sued, and the court's own procedures apply regardless of which state's injury law governs. These are strategic decisions best made early, with the whole picture.
Why Does Nevada's 51% Bar Make This So Consequential?
Because the two states split sharply once fault goes above 50%. Under NRS 41.141, a Nevada claimant who is more at fault than the defendants recovers nothing. Under A.R.S. § 12-2505, an Arizona claimant's award is reduced by their share of fault but never barred.
Here's a hypothetical Arizona resident hurt in a Las Vegas crash with $100,000 in damages:
| Your Share of Fault | If Nevada Law Applies | If Arizona Law Applies |
|---|---|---|
| 30% | $70,000 | $70,000 |
| 50% | $50,000 | $50,000 |
| 60% | $0 | $40,000 |
| 70% | $0 | $30,000 |
If fault is clearly on the other driver, the choice may not change the outcome at all. When fault is genuinely disputed, it can decide whether there's a case. For the full Arizona rule, see how Arizona's pure comparative fault changes a settlement.
What other differences can matter?
Seat belts are one. Nevada law says a seat belt violation can't be considered as negligence or causation in a civil case under NRS 484D.495, while Arizona allows juries to consider seat belt nonuse to reduce damages. For an unbelted Arizona resident hurt in Nevada, Nevada's rule may actually help. Choice of law cuts both ways, which is why it's analyzed issue by issue.
Which Filing Deadlines Apply?
Both states generally give two years for injury lawsuits: NRS 11.190 in Nevada and A.R.S. § 12-542 in Arizona. But the deadlines can interact. Nevada's borrowing statute, NRS 11.020, says that if a claim arose in another state and is time-barred there, it can't be brought in Nevada either, except by a Nevada citizen who has held the claim from the start.
Other deadlines don't depend on choice of law at all. A Nevada crash still triggers Nevada's reporting duties, including the 10-day DMV report under NRS 484E.070 when police didn't investigate, and claims against government entities follow that government's own rules. The safe approach is to treat the shortest possible deadline as the real one.
What if it's the other way around?
The same framework applies. A Nevada resident hurt in Phoenix should generally expect Arizona law, including pure comparative fault. If an Arizona city, county, or state agency is involved, Arizona's 180-day notice of claim applies too, regardless of where the injured person lives.
How Can Meesha Moulton Law Help With a Cross-Border Injury?
Cross-border cases turn on details: where the crash happened, where each defendant is based, and how fault is likely to be split. Meesha Moulton Law has offices in both Las Vegas and Phoenix. Meesha Moulton personally reviews every case, and consultations are free for personal injury matters, so you can find out which state's law is likely to govern before those details are locked in.
Learn more about the firm's personal injury practice, working with a Las Vegas car accident lawyer or a Phoenix car accident lawyer, or request a free consultation.
Frequently Asked Questions About Arizona and Nevada Cross-Border Injuries
Which state's law applies if I live in Arizona but was hurt in Nevada?
Usually Nevada's. Both states start with the law of the place where the injury occurred. A court can apply Arizona law to a particular issue or defendant if Arizona has a more significant relationship to it, such as a claim against an Arizona business over something that happened in Arizona.
Do I have to file my lawsuit in Nevada if the accident happened there?
Not necessarily. You can generally sue where the defendant can be sued, which may include the defendant's home state or the state where the injury happened. Where you file affects procedure and which choice-of-law rules apply, so it's a decision worth making early and carefully.
Can I use Arizona's pure comparative fault rule for a Nevada accident?
Only if a court decides Arizona law governs the fault issue for that defendant. For a typical crash in Nevada between drivers with no prior relationship, Nevada's 51% bar is likely to apply. Arizona law is more likely when the claim centers on Arizona, like a vehicle sold by an Arizona dealer to an Arizona resident.
What is the statute of limitations for an out-of-state car accident?
Both Arizona and Nevada generally allow two years for personal injury lawsuits. Nevada's borrowing statute can bar claims that arose in another state and are already time-barred there. Government claims have shorter deadlines, including Arizona's 180-day notice of claim, so it's safest to follow the shortest deadline that could apply.
Do I have to report a Nevada car accident if I live in Arizona?
Yes, Nevada's crash reporting rules apply to crashes in Nevada regardless of where you live. If police didn't investigate and the crash caused injury or $750 or more in damage, Nevada requires a written report to its DMV within 10 days.
What if a Nevada resident is hurt in Arizona?
The same framework applies in reverse. Arizona law generally governs an injury that happens in Arizona, including its pure comparative fault rule. If a public entity like an Arizona city or state agency is involved, Arizona's 180-day notice of claim requirement also applies.
