Statutes of Limitations: How Six Legal Systems Decide When It Is Too Late to Prosecute a Crime

The traditional case for any time limit rests on evidentiary decay, the defendant's interest in finality, and prosecutorial efficiency, but a newer, victims' rights rationale built on the psychology of delayed disclosure is now the largest driver of reform worldwide. Italy's short, offense-linked prescription periods collided with some of Europe's slowest trial timelines to produce a documented crisis, roughly a quarter of criminal proceedings were declared time-barred at the appeals stage in 2018 alone, addressed by three different governments in three different ways within five years. Germany took fourteen years and three separate legislative interventions, in 1965, 1969, and 1979, to fully exempt murder from any limitation, driven by the approaching expiry of Nazi-era prosecutions. England and Wales imposes no general limitation at all on indictable offenses, while the United States sits between the civil-law and common-law models with a patchwork of federal and state rules bounded by a firm constitutional rule against reviving an already-expired prosecution. Genocide, crimes against humanity, and war crimes are exempted from any limitation under international law as well. Despite arising from entirely unconnected legal traditions, Italy, the United States, and European Union law converge on the identical underlying rule: a limitation period may be extended while still running, but never revived once it has already lapsed.

Why Time Limits Exist: Evidentiary Decay, Finality, Efficiency, and a Fourth, Newer Rationale

The procedural divide between these two families of law is more than a naming difference. In common-law systems, the statute of limitations operates as a defense: once charged, a defendant may raise the time bar, and if the period has lapsed the prosecution ends. In civil-law systems, prescription runs the other way. The prosecutor must commence the criminal action within the prescribed period, and failure to do so extinguishes the state's own power to prosecute, regardless of anything the defendant does or fails to do.

Three traditional rationales justify placing any limit on how long the state may wait. The first is evidentiary decay: memories fade, physical evidence deteriorates, and witnesses become unavailable or die, so a conviction built decades after the fact risks resting on unreliable proof. A defendant's interest in finality and repose supplies the second: no one should live under the indefinite threat of prosecution for a long-past act, a legal interest in closure that time limits are designed to protect. Prosecutorial efficiency closes the list: limited investigative and judicial resources are better spent on contemporary crime than on perpetually reopened cold cases.

A fourth rationale is newer, and sits in direct tension with the first three: the victim's interest in justice, grounded in research on delayed disclosure. Victims of child sexual abuse and similarly traumatic crimes frequently cannot, or do not, report for years or even decades, a pattern the traditional time-bar model was never built to accommodate. Since 2017, this rationale has become the single largest driver of statute-of-limitations and prescription reform activity anywhere in the world, reshaping France's approach to offenses against minors, an entire wave of American state legislation, and, more unevenly, debate within Italy and Germany as well.

What follows is best read as a negotiation among these four rationales, resolved differently in each jurisdiction. Italy's prescription framework, Germany's exemption for murder, France's 2017 doubling, the near-absence of any limitation in England and Wales, and the American constitutional ceiling on retroactivity all represent different answers to the same underlying question: how much weight evidentiary decay, repose, and efficiency should carry against a victim's claim that justice delayed is not justice denied.

Italy's Prescription Crisis: From the Ex-Cirielli Law to Cartabia's Improcedibilità

Italy's prescription crisis is not, at bottom, a story about periods being too short. It is a story about short periods colliding with some of the slowest trial timelines in Europe. Legge n. 251/2005 ("ex-Cirielli"), enacted 5 December 2005, tied prescription directly to the maximum statutory penalty for the offense, with a floor of not less than six years for felonies (delitti) and four years for misdemeanors (contravvenzioni). Part of its transitional provisions was struck down by the Corte Costituzionale della Repubblica Italiana in Judgment No. 393/2006 as unconstitutional. The base framework does not reach crimes punishable by life imprisonment (ergastolo), such as murder, which is why Italy's crisis has centered on corruption, financial, and other serious-but-not-capital offenses rather than homicide.

The resulting numbers are stark. The Ministry of Justice reported that prescription applied to 85,272 cases in 2020. Roughly a quarter of criminal proceedings were declared time-barred at the appeals stage in 2018 alone, and roughly 60 percent of criminal offenses reportedly never survive the preliminary investigative phase before the prosecutor runs out of time. Average case-flow data from the 2020/2021 judicial year explains why: 439 days on average between charge and trial start, and 956 days on average from indictment to reaching the court of appeals.

Three governments tried three different fixes within five years. The Orlando reform (Law 103/2017) added two suspensive causes to the clock, each worth eighteen months, tied to first-instance and appellate verdicts, a moderate patch that bought the appellate system time without touching the underlying bar. The Bonafede reform (Legge 9 gennaio 2019, n. 3, "spazzacorrotti"), sponsored by Justice Minister Alfonso Bonafede and in force from 31 January 2019 for offenses committed from 1 January 2020 onward, went further still: it suspended prescription entirely from the first-instance verdict until the judgment became final on appeal and cassation, drawing criticism, including from within the governing coalition itself, for manufacturing what amounted to eternal trials.

The Cartabia reform (D.Lgs. 150/2022, formally Decreto Legislativo 10 ottobre 2022, n. 150, implementing Law 134/2021 and named for then-Minister of Justice Marta Cartabia) took effect from 30 December 2022 and replaced that open-ended freeze with improcedibilità. The prescription clock still stops at the first-instance verdict, but the appeal must now conclude within two years and cassation within one year, or the case is dismissed for non-proceedability rather than decided on the merits. A transitional three-year and eighteen-month regime for appeals filed by 31 December 2024 has since expired, leaving the tighter deadlines as the binding standard. Improcedibilità does not apply to life-imprisonment crimes and carries only limited extensions, not exemptions, for mafia-related crimes, terrorism, and certain serious sexual offenses. Critics describe the result plainly: bare prescription camouflaged in the external guise of inadmissibility, a political and institutional compromise rather than a genuine solution.

Italy's serial prescription patches, Orlando's, then Bonafede's, then Cartabia's, are another instance of the same targeted-patch pattern that has kept Italy from replacing its criminal code wholesale, the subject of the companion article on criminal law codification.

One procedural choice cuts across all three reforms: requesting Italy's patteggiamento (Artt. 444-448 c.p.p.) suspends the prescription clock from the moment the request is formalized until the resulting judgment becomes final, meaning a defendant who chooses this route gives up any strategy built on running out the clock during an ordinary trial. This article originates that specific effect; for how Italy's patteggiamento actually works, including the Cartabia reform's own amendments to the mechanism, the companion article on plea bargaining is the place to look.

Corporate entities prosecuted under Italy's D.Lgs. 231/2001 regime face their own time pressure tied to the underlying predicate offense's clock, though precisely how that mechanism interacts with prescription doctrine is an open question this article does not attempt to resolve. the companion article on corporate criminal liability develops that open question in full.

Germany's Verjährung: Three Legislative Fixes to Keep Nazi-Era Murder Prosecutable

Germany's Strafgesetzbuch (StGB) §§78-79 splits the concept into two provisions: §78 governs the limitation on prosecution itself (Verjährung der Strafverfolgung), graduated by maximum sentence, while §79 governs the separate limitation on enforcing a sentence already imposed. §78(2) carries the single most consequential line for this article: murder (Mord) is expressly excluded from any limitation on prosecution.

That exclusion was not original to German law. Under the newly founded Federal Republic, murder carried a twenty-year prosecution limit. Because Germany's unconditional surrender occurred on 8 May 1945, that clock was set to expire on 8 May 1965, raising the real possibility that undiscovered or unprosecuted Nazi-era murderers would become immune from prosecution twenty years after the war's end.

The sequence that followed ran for fourteen years. An initial Deutscher Bundestag debate on 4 May 1960 raised the issue publicly. The decisive confrontation came in the Verjährungsdebatte of 10 March 1965, with a resolution reached on 23 March 1965, widely described as a "star hour of parliament," in which Adolf Arndt (SPD) and Ernst Benda (CDU) argued across party lines for extending or abolishing the limitation entirely. Rather than extend the period in 1965, the Bundestag adopted a technical fix instead: it redefined the limitation period's start date to 1 January 1950, reasoning that Germany lacked effective criminal jurisdiction during the early occupation years. The fix bought roughly five years, pushing the deadline to the end of 1969.

As that new deadline approached, the Bundestag extended the murder limitation period from twenty to thirty years in 1969, a substantive rather than technical fix this time, pushing the horizon to 1979. Finally, on 3 July 1979, the Bundestag voted to abolish the statute of limitations for murder entirely, the rule that has stood, unchanged on this point, ever since.

Genocide carries the same unlimited exposure, joined since Germany's 2002 Völkerstrafgesetzbuch (Code of Crimes against International Law) by crimes against humanity and war crimes, aligning German domestic law with Article 29 of the Rome Statute, a provision this article returns to below.

France, England and Wales, and the United States: Three Different Answers to the Same Question

France's prescription periods went largely unchanged for over a century before 2017: ten years for crimes (felonies), three years for délits, one year for contraventions. Loi n° 2017-242 du 27 février 2017, in force from 1 March 2017, doubled the two principal categories: crimes rose from ten to twenty years, délits from three to six years. The reform also built special, victim-protective rules for offenses against minors. For offenses listed at Article 706-47 of the Code of Criminal Procedure generally, prescription runs ten full years from the victim reaching majority, an effective ceiling of age 28. For a narrower subset of délits at Articles 222-12, 222-29-1, and 227-26 of the Penal Code, the period is twenty full years from majority, an effective ceiling of age 38. (A broader thirty-year figure sometimes cited for French crimes against minors was not independently confirmed for this article and is not stated here as settled fact.)

England and Wales occupies the opposite pole. There is no statute of limitations at all for any offense tried on indictment in the Crown Court: murder, manslaughter, rape, robbery, drug trafficking, war crimes, and treason, with one narrow exception, can be prosecuted regardless of elapsed time. This follows directly from the common-law default that, absent a specific statute imposing one, no limitation period exists at all. The doctrinal root is the maxim nullum tempus occurrit regi ("time does not run against the Crown"). The narrow statutory exception is instructive: the Treason Act 1695 imposes a three-year limitation on prosecuting treason committed within the United Kingdom, except an attempt to assassinate the sovereign, which carries no limit, and there is no time limit at all for treason committed abroad. Summary offenses in the Magistrates' Courts must generally be prosecuted within six months under the Magistrates' Courts Act 1980. In place of a bright-line bar, English courts rely on a case-by-case abuse-of-process doctrine, staying a prosecution brought after significant delay only where the delay has caused genuine, demonstrable prejudice to a fair trial.

The United States sits between these two models under 18 U.S.C. §§3281-3282, with no single unified federal rule. Section 3281 permits an indictment for any capital offense to be filed at any time, with no limitation whatsoever. Section 3282 sets a general federal default of five years for nearly everything else, subject to numerous offense-specific carve-outs. State law varies far more widely: five states, Kentucky, Maryland, North Carolina, South Carolina, and Wyoming, impose no statute of limitations on any felony.

The constitutional ceiling on how far any of these systems can reach backward was set by Stogner v. California, 539 U.S. 607 (2003), decided 5-4 in an opinion by Justice Breyer. California had permitted prosecution of decades-old child sexual abuse even where the original limitation period had already expired. The Court held that reviving an already time-barred prosecution through retroactive legislation violates the Ex Post Facto Clause, because such laws deprive a defendant of the fair warning that might otherwise have led him to preserve exculpatory evidence. The operative line is precise: extending a period that has not yet expired is permissible; reviving one that has already lapsed is not.

Bill Cosby and Harvey Weinstein illustrate that boundary rather than an exception to it. California's SB 813 (2016) eliminated the state's rape limitation prospectively but did not reach Cosby's already-expired conduct, which is why the later civil AB 2777 lookback window (2023) let a jury find him liable for a 1972 assault through the civil, not criminal, route, precisely because Stogner forecloses the criminal-side equivalent. Weinstein's original New York prosecution proceeded under the five-year limitation period in force at the time of the alleged conduct, not a retroactively revived one.

No Time Limit at All: International Crimes and the Taricco Standoff

The Convention on the Non-Applicability of Statutory Limitations to War Crimes and Crimes Against Humanity, adopted by UN General Assembly Resolution 2391 (XXIII) on 26 November 1968 and entering into force 11 November 1970, bars any signatory from applying statutory limitations to war crimes as defined in the Nuremberg Charter and to crimes against humanity, whether committed in war or peacetime, including genocide. Despite this, only 56 states had ratified the Convention as of June 2025, a low figure the literature attributes chiefly to Western states' discomfort with the Convention's retroactive reach. A separate 1974 Council of Europe instrument addresses similar ground, but this article does not assert which of the jurisdictions studied here are or are not party to it, since a complete, current ratification list could not be confirmed.

Article 29 of the Rome Statute of the International Criminal Court states plainly that genocide, crimes against humanity, war crimes, and the crime of aggression shall not be subject to any statute of limitations before the International Criminal Court (ICC), a provision ratified as part of a Statute with 125 states parties as of 2025. The non-applicability principle for these crimes is widely regarded as having crystallized into customary international law, binding even states that are party to neither instrument.

Italy's own confrontation between prescription doctrine and EU law produced one of the most closely studied standoffs in EU constitutional law. In Taricco I (Ivo Taricco and Others, CJEU Case C-105/14, 2015), the Court of Justice of the European Union (CJEU) held that Italy's prescription rules were liable to obstruct Italy's Article 325 TFEU duty to protect the EU's financial interests in VAT-fraud cases, instructing Italian courts to disapply national prescription rules where they systematically prevented effective sanctions. The Corte Costituzionale pushed back in Order No. 24/2017 by invoking Italy's controlimiti, or counter-limits, doctrine, the first serious activation of that doctrine by a founding EU member state, arguing that because Italian law treats prescription as substantive criminal law, disapplying it under CJEU instruction would violate the strict legality and non-retroactivity guarantees of Article 25, paragraph 2 of the Constitution. The CJEU partially retreated in Taricco II (M.A.S. and M.B., CJEU Case C-42/17, 2017), holding that national courts need not disapply prescription rules where doing so would itself violate the legality principle due to insufficient precision or foreseeability, a resolution that defused the standoff without declaring either institution the clear winner.

The Taricco saga turns on the exact doctrinal question that also separates common-law and civil-law systems generally: is prescription substantive or procedural? Its resolution tracks the same extend, not revive line the next section names as a genuine cross-system convergence.

One Rule, Three Legal Systems: Extend the Clock, Never Revive It

Despite arising from entirely unconnected constitutional traditions, Italy's Article 25, paragraph 2 of the Constitution, reinforced by Taricco, the United States' Ex Post Facto Clause as applied in Stogner v. California, and the European Union's legality principle as clarified in Taricco II all converge on the same rule: a legislature may extend a still-running limitation period, but may not revive one that has already expired. The doctrinal vocabulary differs sharply: a constitutional legality principle, an Ex Post Facto Clause, an EU foreseeability requirement. The substantive rule these three systems reach, however, is nearly identical.

There are also two distinct paths to exempting the gravest crimes from any limitation at all. Germany's abolition of the murder limitation, across 1965, 1969, and 1979, was reactive and crisis-driven: three separate legislative interventions, each timed to a looming expiry deadline. International law's exemption, by contrast, was designed proactively and categorically from the outset but has struggled with uptake: only 56 ratifications against the Rome Statute's 125. Categorical, principle-first instruments appear to face a ratification cost that crisis-driven domestic legislation, which can build ad hoc political consensus around an immediate deadline, does not.

The civil-law characterization of prescription as substantive law versus the common-law characterization of a limitation period as merely procedural is not mere semantics. It decides who wins a Taricco-style conflict. Because Italy treats prescrizione as substantive law bound by strict legality, an EU-level instruction to disapply it produced a genuine constitutional standoff. A common-law system that treats its own limitation period as merely procedural would likely face no equivalent constitutional obstacle to the same supranational instruction.

Sexual-abuse reform is the one area moving in the same direction across nearly every system studied, but at different layers of law. France amended its criminal prescription framework directly. The American reform wave has concentrated almost entirely on civil lookback windows, since Stogner rules out reviving an expired prosecution on the criminal side. Italy and Germany show comparatively little dedicated recent reform activity in this specific category.

Italy's Corte Costituzionale applies a structurally similar posture in this domain: sentenza n. 40/2019 held that the Court can only ever substitute an unconstitutional mandatory minimum sentence with a figure already present elsewhere in the legal order, never invent a replacement, and its role in policing prescription reflects the same limit on how far a court may reach into a legislatively-set criminal-law parameter, a theme the companion article on sentencing reform develops in full.

Prescrizione, Verjährung, and Statute of Limitations: A Terminology Reference

Five systems, five names for the same limit:

Frequently Asked Questions About Criminal Statutes of Limitations

Can a government revive a criminal prosecution after the statute of limitations has already expired?

Generally, no. The U.S. Supreme Court held in Stogner v. California that reviving an already-expired prosecution through retroactive legislation violates the Ex Post Facto Clause. Italy's constitutional legality principle and the EU legality principle applied in the Taricco saga reach the same conclusion by entirely separate routes: a still-running period can be lengthened, but a lapsed one cannot be brought back to life.

Why does Italy have a prescription crisis that other European countries don't?

Italy's prescription periods, shaped by the 2005 ex-Cirielli law, are tied tightly to each offense's maximum penalty, and those periods routinely run out before Italy's characteristically slow trials can conclude. The measurable result: nearly a quarter of proceedings were time-barred at the appeals stage in a single year, 2018, and tens of thousands more cases lapsed in 2020 alone.

Is there any crime that can never become too old to prosecute?

Two categories qualify, for different reasons. In England and Wales, no offense tried on indictment carries any general time limit at all, a common-law default rather than a deliberate exemption. Separately, genocide, crimes against humanity, and war crimes are placed outside any statute of limitations by two international instruments: the 1968 UN Convention on the Non-Applicability of Statutory Limitations and Article 29 of the Rome Statute.

Did the Cosby and Weinstein cases extend the criminal statute of limitations retroactively?

No. Cosby's underlying California conduct remained governed by a limitation period that had already lapsed by the time reform legislation passed, which is why his only related liability finding came through a civil lookback claim rather than a criminal charge. Weinstein's New York prosecution went forward under the five-year window that was already in force when the alleged conduct occurred.

The Limits of Legal Reform Itself

This series has asked four questions about how criminal law changes over time: how it gets organized in the first place, a question of codification; what gets removed from it entirely, a question of decriminalization; who else can be held liable under it, a question of corporate criminal liability; and how proportionate the resulting punishment should be, a question of sentencing reform. This article closes the series with a fifth and different question: no matter how a legal system organizes, narrows, extends, or calibrates its criminal law, there remains a hard limit on how far back in time that reach can extend. A code can be rewritten, an offense can be decriminalized, a corporate entity can be added to the list of who answers for a crime, and a sentence can be recalibrated for proportionality, but every one of those reforms still has to answer, eventually, the question this article has traced across six legal systems: how long is too long to wait.