What Is the Statute of Limitations for PI Claims?

James Wong — Founder & Pharmacist, LienScripts | April 24, 2024 | 6 min read

The statute of limitations is the legal deadline to file a personal injury lawsuit. In California, most PI claims must be filed within two years of the injury date. Missing this deadline typically extinguishes the claim forever — no matter how strong it is.

This post is for informational purposes only and does not constitute legal advice.

The Legal Deadline That Cannot Be Missed

A statute of limitations (SOL) is a law that sets a maximum time period within which a lawsuit must be filed. If a plaintiff fails to file before the deadline expires, the claim is permanently barred — the defendant can raise the SOL as an absolute defense, and the case will be dismissed regardless of its merits.

In personal injury law, the statute of limitations is one of the most critical deadlines an attorney manages. Missing it means the client loses their right to compensation entirely.

[!KEY] California's PI statute of limitations is two years from the date of injury — missing this deadline permanently extinguishes the claim regardless of its merits, and sending demand letters does not stop the clock.

California's Personal Injury Statute of Limitations

General rule: California Code of Civil Procedure § 335.1 gives personal injury plaintiffs two years from the date of injury to file a lawsuit.

This two-year clock typically begins running on the date of the accident — the day of the car crash, the day of the slip and fall, the day of the dog bite. If the plaintiff does not file a complaint in court within two years, the claim is extinguished.

Important: Sending a demand letter or negotiating with an insurance company does not stop the clock. Only filing the lawsuit — a complaint with the court — tolls the statute of limitations.

Exceptions and Tolling Rules

Several circumstances can toll (pause or extend) the two-year clock:

Discovery rule. The clock may not start until the plaintiff "knew or reasonably should have known" about the injury. This applies most often in toxic exposure cases, medical malpractice, or situations where the injury was latent (not immediately apparent). In most car accident cases, the injury is obvious at the time of the accident and the discovery rule does not delay the SOL.

Minor plaintiffs. If the injured person was under 18 at the time of injury, the two-year clock does not begin running until their 18th birthday, giving them until age 20 to file.

Government entity defendants. Claims against government agencies (cities, counties, state of California) require a government tort claim to be filed within six months of the incident under the Government Claims Act — before a lawsuit can even be filed. Missing the six-month government claim deadline is even more fatal than missing the general SOL.

Mental incapacity. The clock may be tolled if the plaintiff was legally incapacitated at the time of the injury.

Fraud or concealment. If the defendant fraudulently concealed the cause of the injury, the clock may toll until the concealment was discovered.

Out-of-state defendants. Time spent by the defendant outside California may not count toward the statute of limitations.

Other PI Statute of Limitations in California

[!KEY] Government entity cases have a six-month claim deadline under the Government Claims Act — shorter than the general two-year PI statute — and missing that government claim deadline is fatal even before the lawsuit question arises, making government defendant identification at intake a critical screening step.

[!TIP] For Attorneys: Calendar the SOL deadline at intake and treat it as immovable — even active settlement negotiations do not toll the statute, and an insurer can let talks drag until the deadline passes with no obligation to offer anything.

Why Attorneys Track the SOL From Day One

Even if settlement negotiations are ongoing, the attorney cannot rely on good-faith negotiations to stop the clock. Defendants and their insurers sometimes allow negotiations to proceed deliberately close to the SOL deadline, then deny coverage or reject demands — leaving the plaintiff with no time to file.

Best practice: calendar the SOL deadline at intake and treat it as a hard deadline that never moves, regardless of negotiation status.

Statute of Limitations and Pharmacy Lien Enrollment

The SOL also affects pharmacy lien strategy in an indirect but important way: a case that has been delayed, or where treatment was inconsistent, may be approaching the filing deadline without strong documentation.

Late enrollment in a pharmacy lien — where a patient only begins filling prescriptions through the lien program many months after the accident — can raise causation questions. Adjusters may argue the delayed treatment start date undermines the causal link between the accident and the need for medication. Early enrollment, consistent treatment, and a complete pharmaceutical record from shortly after the accident builds the strongest case.

See our post on early pharmacy lien enrollment and case strength for more detail.

What Happens When the SOL Expires

If the two-year deadline passes without a lawsuit filed, the plaintiff loses their right to sue the defendant. The insurance company can reject any further claims. No demand letter, no negotiation, no court will restore the claim.

For attorneys who take on cases close to the SOL, time is genuinely of the essence — cases must be filed promptly, even if the investigation is incomplete. The complaint can be amended later; a missed filing deadline cannot be undone.

Key Takeaway

[!KEY] Late pharmacy lien enrollment — where a patient begins filling prescriptions many months after the accident — creates a causation gap that defense counsel will exploit; early enrollment from the first week of treatment is both clinically and legally optimal.

California's statute of limitations for personal injury is two years from the date of injury. Exceptions exist, but most PI cases must be filed within this window or the claim is lost forever. Attorneys must calendar this deadline at intake, and clients should contact an attorney promptly after any serious injury to ensure all options remain available.