Statute of Limitations in U.S. Litigation

Statutes of limitations are deadline rules that extinguish the right to bring a legal claim after a fixed period has elapsed from the date a cause of action accrues. This page covers the definition and scope of limitations periods under U.S. federal and state law, the procedural mechanics of how deadlines are calculated and enforced, common civil and criminal scenarios, and the boundary conditions — tolling, discovery rules, and equitable exceptions — that alter standard timeframes. Understanding these rules is essential background for interpreting civil litigation process overview and pleadings in U.S. litigation.

Definition and scope

A statute of limitations is a legislative enactment that sets the maximum time window within which a plaintiff or prosecutor may initiate a legal proceeding after the underlying event occurs. Once that window closes, the defendant acquires an affirmative defense — typically raised in the answer or by motion — that bars the claim regardless of its merits. The U.S. legal framework contains no single uniform limitations period; instead, both Congress and each state legislature independently set periods for specific categories of claims.

At the federal level, the general civil statute of limitations for actions not otherwise specified is codified at 28 U.S.C. § 1658, which establishes a 4-year default for claims arising under federal statutes enacted after December 1, 1990. Before that date, courts applied the most analogous state limitations period. The Federal Rules of Civil Procedure do not independently create or extend limitations periods; they govern procedural enforcement of those periods, including how the affirmative defense is pleaded under Rule 8(c).

State statutes of limitations vary significantly by claim type and jurisdiction. Personal injury claims in most states carry periods of 2 to 3 years. Contract claims frequently run 4 to 6 years. Written-contract claims in California are governed by California Code of Civil Procedure § 337, which sets a 4-year period. New York's CPLR § 213 establishes a 6-year period for breach of written contract actions.

How it works

The limitations clock starts running when a cause of action accrues — generally the date the injury or breach occurs. Calculating the deadline follows a discrete sequence:

1. Identify the claim type. Each cause of action — tort, contract, fraud, federal civil rights, environmental, etc. — carries its own period set by the applicable statute.
2. Determine the accrual date. This is usually the date of the wrongful act or injury, but the discovery rule (discussed below) can shift this date.
3. Apply the raw deadline. Count forward the number of years prescribed by the applicable code section.
4. Check for tolling or extension. Determine whether any tolling doctrine suspends the clock during a portion of that period.
5. Assess whether the defendant raised the defense. Limitations is an affirmative defense that can be waived if not timely asserted under Federal Rule of Civil Procedure 8(c) or the state equivalent.
6. Evaluate equitable estoppel. If the defendant's conduct prevented timely filing, courts may bar the defendant from asserting the limitations defense.

Tolling suspends the running of the limitations period without restarting it. Recognized tolling grounds across most jurisdictions include: minority (the plaintiff is under 18), legal incapacity, fraudulent concealment by the defendant, the plaintiff's active military service under the Servicemembers Civil Relief Act, 50 U.S.C. § 3936, and — in class actions — the American Pipe & Construction Co. v. Utah, 414 U.S. 538 (1974) tolling rule, which suspends individual class members' limitations periods for the duration of a class action lawsuit.

The discovery rule is a distinct doctrine holding that the limitations period begins not on the date of injury but on the date the plaintiff discovered — or by reasonable diligence should have discovered — the injury and its cause. Federal courts apply the discovery rule selectively; it is expressly codified for fraud claims at 15 U.S.C. § 77m (Securities Act of 1933), which allows 3 years from the violation or 1 year from discovery, whichever is earlier.

Common scenarios

Federal civil rights claims (42 U.S.C. § 1983). Congress did not supply a limitations period for § 1983 claims. Under Wilson v. Garcia, 471 U.S. 261 (1985), federal courts borrow the forum state's personal-injury limitations period. This is 2 years in New York, 2 years in Illinois, and 4 years in Florida (Fla. Stat. § 95.11(3)(p)).

Medical malpractice. Most states impose periods of 2 to 3 years from the date of the negligent act or from discovery, with absolute outside cutoffs called statutes of repose — typically 6 to 10 years from the act regardless of discovery. Texas, for example, imposes a 2-year limitations period and a 10-year repose period for health care liability claims under Tex. Civ. Prac. & Rem. Code § 74.251.

Contract disputes. Federal courts distinguish oral contracts (shorter period) from written contracts (longer period). Under the Uniform Commercial Code Article 2, the default period for sale-of-goods claims is 4 years, and parties may contractually reduce this to as few as 1 year but may not extend it.

Federal criminal prosecutions. The general federal criminal statute of limitations is 5 years from the date of the offense under 18 U.S.C. § 3282. Capital offenses and certain terrorism offenses carry no limitations period under 18 U.S.C. § 3281. Bank fraud and wire fraud affecting financial institutions are subject to a 10-year period under 18 U.S.C. § 3293.

Securities fraud. Under the Sarbanes-Oxley Act of 2002, the limitations period for private securities fraud actions is the earlier of 2 years after discovery of the facts constituting the violation, or 5 years after the violation itself (28 U.S.C. § 1658(b)).

Environmental claims. The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) provides a 3-year period for cost-recovery actions from the date of completion of remedial action, and a 6-year period from the date of initiation of physical on-site construction (42 U.S.C. § 9613(g)).

Decision boundaries

Several threshold distinctions determine which limitations rule applies and whether the period has actually expired.

Statutes of limitations vs. statutes of repose. These are distinct instruments. A statute of limitations begins running at accrual (which can be tolled or delayed by the discovery rule). A statute of repose begins running at a fixed external event — typically the act of a professional, the sale of a product, or construction completion — and cannot be tolled by discovery or minority in most jurisdictions. The U.S. Supreme Court addressed this distinction directly in CTS Corp. v. Waldburger, 573 U.S. 1 (2014), holding that CERCLA's preemption of state statutes of limitations does not extend to state statutes of repose.

Equitable tolling vs. equitable estoppel. These doctrines are frequently confused. Equitable tolling suspends the limitations period because circumstances beyond the plaintiff's control — such as fraudulent concealment or extraordinary circumstances — prevented timely filing. Equitable estoppel bars the defendant from asserting the limitations defense based on the defendant's own conduct that induced the plaintiff's delay. Both doctrines require affirmative showings and are construed narrowly in federal courts, particularly in contexts such as immigration proceedings governed by 8 U.S.C. § 1252.

Federal vs. state borrowing.

References

• National Association of Home Builders (NAHB) — nahb.org
• U.S. Bureau of Labor Statistics, Occupational Outlook Handbook — bls.gov/ooh
• International Code Council (ICC) — iccsafe.org