How Korea's Criminal Statute of Limitations Is Set by Offense

In Korea, the criminal statute of limitations is set by the Criminal Procedure Act on a seven-tier scale that runs from 25 years down to one year, with each tier keyed to the statutory penalty for the offense rather than to the sentence a court actually imposes. The concept — rendered in the Act's official English reference translation as the "limitation periods for public prosecution" — marks the outer time limit within which the state may bring a prosecution. This article outlines how those periods are structured, how they attach to particular offenses, which crimes fall outside them, when a period starts and stops, and how the framework is described as applying to foreign nationals.

What the statute of limitations means in Korean criminal procedure

Korean law treats the statute of limitations for public prosecution as the period after which the state's authority to prosecute a completed crime lapses, so that a public prosecution can generally no longer be brought once the period has run. Even where an investigative agency later becomes aware of an offense, prosecution is generally described as barred if the applicable period has already expired. The reasons usually given for the rule are twofold: as time passes, evidence disperses and memories fade, making it harder to establish what happened; and a person is not left indefinitely exposed to the uncertainty of possible punishment. The Criminal Procedure Act sets these periods according to the seriousness of the offense. This limit on prosecution is also treated as distinct from the separate "prescription of a sentence," which concerns the lapse of the authority to enforce a penalty after a conviction has become final. It is likewise separate from the time limits that govern the civil resolution of a related dispute — for instance, where a medical accident is involved, the application period for medical dispute mediation runs on its own statutory basis, independent of the criminal limitation period.

How the Criminal Procedure Act divides the limitation periods

Article 249(1) of the Criminal Procedure Act sorts the limitation period into seven tiers according to the statutory penalty fixed for the offense. Under the Act, the period is 25 years for crimes punishable by death; 15 years for crimes punishable by imprisonment for life, with or without prison labor; and 10 years for crimes punishable by a maximum term of 10 years or more. It is then 7 years for a maximum term of less than 10 years; 5 years for a maximum term of less than 5 years, or for suspension of qualifications of 10 years or more, or a fine; 3 years for suspension of qualifications of 5 years or more; and one year for suspension of qualifications of less than 5 years, or for disciplinary detention, a minor fine, or confiscation.

The reference point, the Act makes clear, is not the sentence a court actually imposes but the penalty prescribed by statute for the offense — specifically its upper limit, the statutory maximum. Where an offense carries two or more principal penalties, Article 250 directs that the heaviest be used; and where a penalty is increased or reduced under the Criminal Act, Article 251 directs that the period be measured against the penalty before any increase or reduction. Separately, Article 249(2) provides that once a public prosecution has been instituted, the limitation period is treated as complete if no final judgment is rendered within 25 years of that institution — a rule sometimes referred to as the deemed, or constructive, limitation period.

The limitation period by statutory penalty

Placed side by side, the seven tiers show how the period tracks the gravity of the penalty prescribed for the offense, as the Criminal Procedure Act sets them out in Article 249(1).

As the table shows, the limitation period is structured so that the more serious the statutory penalty, the longer the period. Because the same conduct can be charged under different offense labels carrying different statutory penalties, the applicable period is described as capable of varying with the charge that ultimately applies.

How the periods apply to fraud, embezzlement, and assault

The limitation period for a particular offense is worked out by placing the statutory penalty for that offense into the tiers of Article 249. Fraud under the Criminal Act, for example, is generally described as carrying an upper limit that falls within the "10 years or more" band, so that its limitation period is commonly discussed as 10 years under Article 249(1)3. Embezzlement, with an upper limit of five years' imprisonment, falls in the "less than 10 years" band and is discussed as a 7-year period under subparagraph 4; simple assault, with an upper limit of two years, falls in the "less than 5 years" band and is discussed as a 5-year period under subparagraph 5.

These figures, however, assume the base statutory penalties in the Criminal Act. Where a special statute applies and raises the statutory penalty — for instance, legislation aggravating punishment for specified economic crimes, or for organized or habitual violence — a longer limitation tier may apply accordingly. Statutory penalties are themselves amended over time, which can shift the applicable tier, so the period for any specific offense is treated as something to be confirmed against the law and the penalty in force for that case.

Which offenses have no limitation period

Not every offense is subject to a limitation period. Article 253-2 of the Criminal Procedure Act, added in 2015, provides that the limitation periods in Articles 249 through 253 do not apply to the crime of killing a person where that crime is punishable by death. It is commonly described as the provision that removed the statute of limitations for murder, subject to a proviso that is described as excluding accomplices in a subordinate role. When it was introduced, it was also made applicable to earlier offenses whose limitation periods had not yet run out at that point.

Beyond this, particular special statutes outside the Criminal Procedure Act sometimes exclude or suspend the limitation period for specified offenses. For that reason, whether the limitation period for a given crime has been removed or paused is described as a question to be checked against both the Criminal Procedure Act and any special statute that applies. Even where the phrase "abolition of the statute of limitations" is used, commentary notes that it does not apply uniformly to every offense.

When the period starts and when it is suspended

The Criminal Procedure Act sets the period to run, in principle, from the time the criminal act is completed. Article 252 provides that the limitation period commences after the criminal act is completed, and that, where there are accomplices, the period for all of them is counted from the time the last act ends. For offenses whose result appears only later, then, it is the point of completion, rather than the initial act, that is discussed in connection with when the period begins.

A running period can also be suspended for certain reasons. Article 253 provides that the period ceases to run when a public prosecution is instituted, and begins to run again from the time a judgment dismissing the prosecution or finding a lack of jurisdiction becomes final; a suspension as to one accomplice is described as extending to the others. The Act further provides, in Article 253(3), that the limitation period is suspended for any period during which an offender stays abroad for the purpose of escaping criminal punishment — so that time spent outside the country for that purpose is described as not counting toward completion of the period. The actual point at which a period is completed can therefore vary with its starting point and any grounds for suspension.

How the limitation periods apply to foreign nationals and time spent abroad

Because the limitation periods sit within Korea's general criminal law, their reach follows the reach of that law rather than the nationality of the person involved. Article 2 of the Criminal Act provides that the Act applies to both Korean nationals and foreigners who commit crimes within the territory of the Republic of Korea, and the Criminal Procedure Act's limitation periods are described as applying to those offenses on the same terms. In other words, for an offense committed in Korea, the seven-tier framework of Article 249 is generally discussed as operating the same way whether the person concerned is a Korean national or a foreign national.

The suspension rule in Article 253(3) is often noted as being of particular relevance where a person leaves Korea. Because the limitation period is suspended for any time an offender stays abroad for the purpose of escaping criminal punishment, departure from the country does not, on its face, simply let the clock run out; time spent outside Korea for that purpose is described as excluded from the count. How the rule applies in a specific case — including whether a stay abroad was for that purpose — is treated as a fact-specific question rather than something settled by nationality or residence alone. In English-language materials, the concept is generally rendered as the "limitation periods for public prosecution" — the phrasing used in the official reference translation of the Criminal Procedure Act published through the Korea Legislation Research Institute (and, in the body of Article 249, as the "prescription for public prosecution").

Key points

Korea's criminal statute of limitations is structured by Article 249 of the Criminal Procedure Act into seven tiers, from 25 years down to one year, keyed to the statutory maximum penalty for the offense rather than to the sentence imposed. The more serious the penalty, the longer the period: crimes punishable by death carry 25 years, while those with a maximum term of 10 years or more carry 10 years. Since 2015, Article 253-2 has excluded the crime of killing a person punishable by death from the limitation periods, and individual special statutes may exclude or suspend them for other offenses. The period generally runs from the completion of the criminal act but can be suspended — by the institution of a prosecution, or by an offender's stay abroad to escape punishment — so that how a given period applies is treated as a matter for individual assessment under the law and facts that apply.