Dismissal, almost without exception
If a personal injury lawsuit is filed in Arizona after the applicable statute of limitations has run — whether that's the ordinary two-year deadline under A.R.S. § 12-542, or the shortened one-year deadline for a government defendant — the court will almost always dismiss the case as time-barred. This happens regardless of how strong the underlying claim actually is, how clearly the other party was at fault, or how serious the injury turned out to be.
Courts apply these deadlines strictly
Statutes of limitations exist specifically to create a firm, predictable cutoff, and Arizona courts generally enforce them that way. Being close to the deadline, having a sympathetic reason for the delay that doesn't fit a recognized legal exception, or simply not having known the exact date isn't, on its own, a basis for a court to excuse a late filing. The things that genuinely change the outcome are recognized legal doctrines — the discovery rule, tolling for minors or incapacity — not general fairness arguments about why more time should have been allowed.
Negotiations end along with the legal leverage behind them
One of the more painful practical consequences: once the statute of limitations has actually run, an insurance company has no legal obligation to keep negotiating, to make any offer, or to pay anything at all — even if settlement talks were active and seemingly productive right up until the deadline passed. The entire practical leverage behind a settlement negotiation comes from the real possibility of a lawsuit; once that possibility is gone, so is most of the incentive for the other side to pay.
Government claims can be barred even sooner
This risk is sharper still for claims against a government entity. Because Arizona's 180-day Notice of Claim requirement and one-year lawsuit deadline both run out well before the ordinary two-year statute of limitations would, it's entirely possible to miss the real, controlling deadline while still believing there's plenty of time left under the two-year rule most people have heard of. See our guide to Arizona's government claim notice deadlines for exactly how those shorter windows work.
If there's any doubt at all
Because the consequence of missing a deadline is generally permanent and because tolling and discovery-rule facts can genuinely shift the real deadline in a specific case, the only reliable way to know where things actually stand is to confirm the exact date with a licensed Arizona attorney as early as possible — ideally well before it looks like time might be running short.