What a Statute of Limitations Does
A statute of limitations sets the deadline for starting a legal case. Once the period runs out, the claim is generally barred even if the facts strongly favor the plaintiff. The limit is not a rule about whether a claim is valid; it is a rule about when it can be brought. It also reflects a practical judgment that evidence fades, memories weaken, and people should be able to plan their affairs without indefinite exposure to suit.
In civil cases, the deadline is typically an affirmative defense. That means the defendant must raise it, and a defendant who fails to do so may lose the protection even after the period has passed.
Statutes of Limitations vs. Statutes of Repose
The two are often confused. A statute of limitations usually starts running when the claim accrues, which can depend on when the injury is discovered. A statute of repose sets a fixed deadline measured from a specific event, such as completion of construction or delivery of a product, regardless of when harm is discovered. Repose periods can cut off a claim before the plaintiff even knows about the injury, and they are common in construction, product liability, and medical device cases.
Typical Ranges by Claim Type
Deadlines are set by state law, and the same claim can have very different limits in different states. The ranges below are general orientation only. Always confirm the exact statute and any special rules for your claim.
| Claim type | Common range | Notes |
|---|---|---|
| Written contract | About 4 to 10 years | Often runs from breach, not signing |
| Oral contract | About 2 to 6 years | Usually shorter than written contracts |
| Personal injury | Often 2 to 3 years | Discovery rule may extend the start |
| Property damage | Roughly 3 to 6 years | Can depend on whether damage is latent |
| Fraud | Varies widely | Clock often starts on discovery |
| Medical malpractice | Short, with special notice rules | Repose periods are common |
| Debt collection | Set by state contract law | Payment can sometimes restart the clock |
When the Clock Starts
The general rule is that a claim accrues when the harm occurs. Courts have developed refinements:
- Discovery rule. In many states, the clock starts when a reasonable person would have discovered the injury and its cause. This matters in medical malpractice, toxic exposure, and hidden fraud cases.
- Continuing violation. When harm repeats or continues, some courts treat each act or the ongoing conduct as a basis for accrual.
- Breach of contract. The clock usually runs from the breach, even if the injured party does not notice immediately.
Pausing the Clock: Tolling
Tolling doctrines suspend or extend a limitation period. Common examples include:
- Minority or incapacity. The clock may be paused while the plaintiff is a minor or lacks legal capacity.
- Defendant's absence. Some states pause the clock while the defendant is outside the jurisdiction and cannot be served.
- Military service. Federal and state laws protect active duty service members from certain default judgments and may toll deadlines.
- Bankruptcy. An automatic stay halts most collection and litigation while a bankruptcy case is pending.
- Fraudulent concealment and estoppel. A defendant who hides the wrong or induces the plaintiff to delay may be barred from relying on the deadline.
Some statutes also include their own tolling rules, and the specifics differ by state and by claim.
Filing vs. Serving
Meeting the deadline is not always as simple as filing on time. Some states require that the defendant be served within the limitation period or within a short time after filing. If service is delayed or defective, a claim filed on the last day may still be vulnerable. Check both the filing and service requirements in your jurisdiction.
Notice Requirements and Government Claims
Claims against government entities often have a shorter deadline and a mandatory notice step. Many states require a written notice of claim to the agency within a set period, sometimes just a few months, before a lawsuit can be filed. Missing the notice requirement can end the case even if the underlying claim is strong. Medical malpractice claims in many states also require pre-suit notice or a certificate of merit.
Criminal Statutes of Limitation
Criminal cases have their own limitation periods, which vary by offense and jurisdiction. Serious felonies often have longer periods than misdemeanors, and some offenses, including many homicides, have no time limit at all. When a limitation period applies, the prosecution generally must begin within it, though rules about what counts as commencement differ.
Can a Contract Shorten the Deadline?
Some contracts include a clause that shortens the time to sue. Courts enforce these clauses to varying degrees, and some states limit or prohibit them in certain consumer contracts. A shortened period is usually valid only if it is reasonable and clearly stated. If your agreement contains such a clause, do not assume the statutory period applies.
Waiving or Extending the Deadline
Parties sometimes agree to extend a limitation period while they negotiate, and courts may enforce such an agreement if it is clear and supported by consideration. A defendant can also waive the defense by failing to raise it, by litigating the merits for a long period, or by conduct that misleads the plaintiff. Because waiver depends on the facts, it is safer to assume the deadline applies and act before it runs.
Practical Guidance
Deadlines are claim-specific and state-specific, and exceptions can be decisive. Missing one usually cannot be fixed later. If you think a deadline may be approaching, gather your documents, note the key dates, and speak with an attorney promptly rather than waiting to see how things develop.
This guide is general information, not legal advice. Limitation periods vary by jurisdiction and claim, and only a qualified attorney can determine how the rules apply to your situation.