In the chaos after an injury — dealing with medical treatment, insurance companies, and recovery — the filing deadline for your legal claim can sneak up on you. Arizona's statute of limitations gives you a finite window to file a personal injury lawsuit. Once that window closes, it doesn't matter how strong your case is or how badly you were hurt. Understanding these deadlines — and the traps within them — is essential.
The Two-Year General Rule
Under A.R.S. § 12-542, the statute of limitations for most personal injury claims in Arizona is two years from the date of the injury. This applies to car, truck, and motorcycle accidents, slip-and-fall injuries, dog bites, assault and battery, and most other negligence-based injury claims. The clock starts on the date of the accident or incident — not the date you hire an attorney, not the date you finish treatment, and not the date you realize the full extent of your injuries.
The 180-Day Government Claim Trap
This is the deadline that catches the most people off guard. If your injury was caused by a government entity — a city, county, or state agency, a public employee acting in their official capacity, a government-owned vehicle, a dangerous condition on public property, or a public hospital or healthcare facility — you must file a formal Notice of Claim within 180 days of the incident under A.R.S. § 12-821.01. This is not a lawsuit — it's a prerequisite to filing a lawsuit. If you miss the 180-day window, you're barred from suing the government entity entirely, even though the general two-year deadline hasn't passed.
Common scenarios where the 180-day rule applies include accidents involving city buses or government vehicles, injuries on public sidewalks, roads, or in government buildings, injuries at public schools or parks, medical errors at county hospitals or VA facilities, and police use of force incidents.
Special Situations That Affect the Deadline
Injuries to Minors
If the injured person is under 18, the statute of limitations is "tolled" (paused) until they turn 18. At that point, the standard two-year clock starts. So a child injured at age 10 has until age 20 to file. However, for claims against government entities, the 180-day Notice of Claim deadline is NOT tolled for minors — a parent or guardian must file the notice within 180 days regardless of the child's age.
The Discovery Rule
In some cases, the injury isn't immediately apparent. For example, a surgical sponge left inside a patient may not cause symptoms for months. In these situations, the clock may start when the injury was discovered or reasonably should have been discovered, rather than the date of the procedure. The discovery rule applies primarily to medical malpractice and product liability cases. It does not apply to typical accident cases where the injury is immediately obvious.
Defendant Leaves Arizona
If the person who injured you leaves Arizona after the incident, the time they spend out of state may not count toward the statute of limitations. This tolling provision (A.R.S. § 12-501) prevents defendants from running out the clock by fleeing the jurisdiction.
What Doesn't Stop the Clock
Several things that people assume pause the statute of limitations actually don't. An ongoing insurance claim or negotiation does not pause the deadline. Continuing medical treatment does not extend the deadline. Sending a demand letter does not stop the clock. Not yet knowing the total amount of your damages doesn't extend the deadline. Filing a police report is not a substitute for filing a lawsuit.
The only thing that stops the statute of limitations is filing a lawsuit with the court (or filing a Notice of Claim for government entities within the 180-day window).
What Happens If You Miss the Deadline
Your case is dismissed — permanently. The defendant will raise the statute of limitations as an affirmative defense, and the court will dismiss your case. There is essentially no remedy. Arizona courts apply these deadlines strictly, even in cases involving catastrophic injuries, clear liability, and sympathetic plaintiffs. The deadline is the deadline.
This is why personal injury attorneys emphasize acting quickly. Even if you're not sure whether you want to pursue a legal claim, consulting an attorney early preserves your options. Waiting until the deadline approaches — or passes — eliminates them.
Practical Timeline for an Arizona Personal Injury Case
| When | What to Do |
|---|---|
| Day 1 (date of injury) | Seek medical attention; document the scene; report the incident |
| Week 1 | Consult with a personal injury attorney (free consultation) |
| Months 1–12 | Complete medical treatment; attorney investigates and builds your case |
| Month 12–18 | Attorney sends demand; negotiation begins |
| Month 18–23 | If no settlement, file lawsuit before the 2-year deadline |
| Day 180 (government claims) | Notice of Claim MUST be filed by this date for government cases |
Don't Let the Clock Run Out
Find a personal injury attorney in Arizona for a free consultation. Most work on contingency — no fee unless you win.
Search Personal Injury AttorneysFrequently Asked Questions
Does the two-year deadline apply to property damage from a car accident?
Yes. Property damage claims in Arizona also have a two-year statute of limitations under A.R.S. § 12-542. If your vehicle was damaged in an accident, you have two years to file a property damage lawsuit (separate from any personal injury claim).
Can I file a personal injury claim after the statute of limitations expires if I didn't know I was injured?
Possibly, under the discovery rule — but only if the injury genuinely wasn't discoverable through reasonable diligence. An injury from a car accident is immediately known; a latent medical condition caused by a defective product might not be. Consult an attorney immediately if you believe this applies to your situation.
Does filing an insurance claim satisfy the statute of limitations?
No. Filing an insurance claim and filing a lawsuit are completely separate actions. An insurance claim does not stop, pause, or satisfy the statute of limitations. You must file an actual lawsuit with the court before the deadline expires to preserve your legal rights.