Statutes of Limitations in U.S. Law
Statutes of limitations are legally defined deadlines that set the maximum period within which a party may initiate a civil lawsuit or a government may bring criminal charges. These time limits exist in both federal and state law, vary significantly by claim type and jurisdiction, and carry severe procedural consequences when missed. Understanding how limitation periods are structured — and how courts interpret exceptions — is essential to navigating civil law vs. criminal law proceedings at every level of the U.S. legal system.
Definition and scope
A statute of limitations is a legislative enactment that extinguishes the right to bring a legal action after a specified period has elapsed from the date a cause of action accrues. Once the deadline passes, a defendant may raise the expired period as an affirmative defense, and courts generally must dismiss the claim regardless of its merits.
The scope is broad. Statutes of limitations govern personal injury claims, contract disputes, fraud allegations, federal criminal prosecutions, and administrative enforcement actions. Congress codifies general federal civil limitation periods under 28 U.S.C. § 1658, which establishes a default 4-year limitation for civil claims arising under federal statutes enacted after December 1, 1990. For older federal causes of action, courts borrow limitation periods from analogous state statutes.
State limitation periods are embedded in each state's civil practice statutes. They differ by claim category: contract claims commonly carry 3- to 6-year limits, written contract claims may extend to 6 years in jurisdictions such as New York (N.Y. C.P.L.R. § 213), while personal injury claims in states like California are limited to 2 years under California Code of Civil Procedure § 335.1.
Federal criminal limitation periods appear in 18 U.S.C. § 3282, which sets a default 5-year period for non-capital federal offenses. Capital crimes and certain terrorism-related offenses carry no limitation period under federal statute.
The doctrine intersects with administrative law and agencies, because federal agencies also face statutory deadlines when initiating enforcement proceedings — for example, the Equal Employment Opportunity Commission requires that a charge of discrimination be filed within 180 days (or 300 days where a state agency has jurisdiction) of the alleged unlawful act, per Title VII of the Civil Rights Act, 42 U.S.C. § 2000e-5(e).
How it works
The limitation clock typically begins when a cause of action "accrues." Accrual rules differ by claim type:
- Standard accrual — The period begins on the date the injury or violation occurs, regardless of whether the plaintiff has knowledge of it.
- Discovery rule — The period begins when the plaintiff discovered, or through reasonable diligence should have discovered, the injury and its cause. Federal courts apply the discovery rule to fraud and latent injury claims (see Rotella v. Wood, 528 U.S. 549 (2000), Supreme Court opinion).
- Continuing violation doctrine — Where unlawful conduct is ongoing and each act constitutes a fresh violation, courts may treat the limitation period as resetting with each new act. This doctrine appears frequently in civil rights and employment discrimination litigation.
- Tolling — The running of the clock is suspended ("tolled") during defined periods. Common tolling grounds include the plaintiff's minority (infancy), legal incapacity, the defendant's fraudulent concealment, active military service under the Servicemembers Civil Relief Act (50 U.S.C. § 3936), and the filing of a prior related action.
- Equitable estoppel — Separate from statutory tolling, courts may bar a defendant from asserting the limitations defense if the defendant's own conduct induced the plaintiff to delay filing.
Once a complaint is filed with the court within the applicable period, the clock stops for that claim. The Federal Rules of Civil Procedure, specifically Rule 8(c), classify the statute of limitations as an affirmative defense that must be raised in the defendant's responsive pleading or it is waived.
Common scenarios
Personal injury (tort): A plaintiff injured in a vehicle accident in Texas has 2 years from the date of injury to file suit under Texas Civil Practice & Remedies Code § 16.003. Delay beyond that date forfeits the claim.
Written contracts: Breach of contract claims based on a written instrument carry a 6-year period in New York and Massachusetts, compared with 4 years for written contracts in California (Cal. Code Civ. Proc. § 337), illustrating sharp interstate divergence.
Federal securities fraud: Private securities fraud claims under the Private Securities Litigation Reform Act of 1995 are subject to a 2-year limitation from discovery and a 5-year repose period from the alleged violation, per 28 U.S.C. § 1658(b). The repose period is absolute and cannot be tolled.
Medical malpractice: Limitation periods for medical malpractice vary from 1 year (Kentucky, K.R.S. § 413.140) to 3 years in states such as Illinois (735 ILCS 5/13-212). Many states combine a limitation period with a statute of repose — an outer deadline that runs from the date of the medical act, not discovery — which can extinguish claims even before a patient learns of the injury.
Criminal prosecution: A 5-year default federal period under 18 U.S.C. § 3282 governs offenses including bank fraud and wire fraud. By contrast, federal sex trafficking offenses involving minors carry no limitation period under 18 U.S.C. § 3299. State murder charges are also typically exempt from limitation periods in all 50 states.
Decision boundaries
The statute of limitations differs from two related doctrines that create boundary confusion in litigation:
Statutes of limitations vs. statutes of repose:
A statute of limitations begins running from accrual (which may be tolled) and bars the remedy after the period expires. A statute of repose begins running from a fixed event — typically the date of product manufacture, construction completion, or a medical act — and extinguishes the underlying right entirely, without tolling. The U.S. Supreme Court addressed this distinction in CTS Corp. v. Waldburger, 573 U.S. 1 (2014) (opinion), holding that CERCLA's preemption provision applies to statutes of limitations but not statutes of repose.
Statutes of limitations vs. laches:
Laches is an equitable doctrine barring claims brought after an unreasonable and prejudicial delay, applicable in equity courts even when no statutory deadline exists. In patent law, the Supreme Court held in SCA Hygiene Products Aktiebolag v. First Quality Baby Products, 580 U.S. 328 (2017) (opinion), that laches cannot bar a damages claim filed within the 6-year limitation period under 35 U.S.C. § 286. This illustrates that where a legislature has set a specific period, equitable doctrines generally yield to the statutory deadline for legal (as opposed to equitable) relief.
Borrowing statutes: When a federal cause of action lacks an express limitation period and no closely analogous federal period exists, federal courts apply the most analogous state limitation period, a practice codified in 42 U.S.C. § 1988 for civil rights claims. Section 1983 civil rights claims borrow the state personal injury period — which means the controlling deadline varies by state, a point examined in connection with due process rights in the U.S. litigation.
Waiver and forfeiture: Defendants who fail to plead the statute of limitations as an affirmative defense under Fed. R. Civ. P. 8(c) in their initial responsive pleading typically forfeit it. Courts distinguish between waiver (intentional relinquishment) and forfeiture (failure to assert), but the practical result is that the