Statute of Limitations Calculator
Determine the legal filing deadline for your claim based on the incident date, claim type, and discovery rule. Critical for anyone evaluating whether their lawsuit is still timely.
About this calculator
A statute of limitations is the legally prescribed window within which a plaintiff must file a lawsuit. Miss it and the court will almost certainly dismiss the case. The deadline is calculated from either the incident date or the discovery date — whichever produces the later deadline — by adding the limitations period in years specific to the claim type (e.g., 2 years for personal injury, 4 years for written contracts in many states). The discovery rule allows the clock to start when the plaintiff knew or should have known about the injury, which matters most in medical malpractice and latent-disease cases. For minor plaintiffs, the statute is often tolled (paused) until they reach majority age, effectively extending the window. The formula computes: deadline = max(incidentDate + claimYears × isMinorMultiplier, discoveryDate + claimYears), returning whichever date is later to give the plaintiff maximum time.
How to use
Suppose an adult was injured in a car accident on March 1, 2022, and the personal-injury limitations period in their state is 2 years. The incident and discovery dates are the same. Incident deadline: March 1, 2022 + 2 years = March 1, 2024. Discovery deadline: same date. The calculator returns March 1, 2024 as the filing deadline. If the plaintiff had been a minor (isMinor multiplier applied), the clock would typically not start until they turned 18, producing a later deadline.
Frequently asked questions
What happens if I miss the statute of limitations deadline for my lawsuit?
Missing the statute of limitations is almost always fatal to a lawsuit. The defendant can file a motion to dismiss on timeliness grounds, and courts routinely grant it regardless of the merits of the underlying claim. There are narrow equitable exceptions — such as fraudulent concealment by the defendant or the plaintiff being incapacitated — but these are difficult to prove and not available in every jurisdiction. This is why attorneys treat deadline tracking as one of the most critical aspects of case intake; even a single day past the deadline can bar a valid claim forever.
How does the discovery rule extend the statute of limitations?
The discovery rule holds that the limitations clock does not start until the plaintiff discovered, or reasonably should have discovered, the injury and its cause. It applies most often in medical malpractice cases where harm is not immediately apparent, toxic-exposure cases where illness develops years later, and fraud cases where the wrongdoing is deliberately concealed. Courts apply an objective standard: when would a reasonable person in the plaintiff's position have known enough to investigate? The discovery date you enter in this calculator should reflect the date you first learned — or clearly should have learned — that you were harmed and that someone else was responsible.
When is the statute of limitations tolled for minors or incapacitated plaintiffs?
Tolling pauses the limitations clock for plaintiffs who cannot legally protect their own rights. For minors, most states toll the statute until the child reaches age 18, at which point the full limitations period begins to run. For mentally incapacitated adults, tolling typically applies for the duration of the incapacity. Some states impose an outer cap — for example, no claim may be brought more than 10 years after the incident even if the plaintiff was a minor. Because tolling rules are highly state-specific, this calculator's isMinor flag gives a general extension estimate; always confirm with a licensed attorney in your jurisdiction.