Perjury

Lore & Background

Perjury requires both the intention to deceive and the actual making of a false statement under oath or affirmation. Statements that are facts cannot be considered perjury, even if they might arguably constitute an omission, and it is not perjury to lie about matters that are immaterial to the legal proceeding. Statements that entail an interpretation of fact are not perjury because people often draw inaccurate conclusions unwittingly or make honest mistakes without the intent to deceive.

Reader's Guide

Perjury is a statutory offence in many jurisdictions, with penalties varying widely. In Canada, those who commit perjury are liable to imprisonment for a term not exceeding fourteen years. In the United States, the general perjury statute under federal law classifies perjury as a felony and provides for a prison sentence of up to five years. The California Penal Code allows for perjury to be a capital offense in cases causing wrongful execution. Perjury which caused the wrongful execution of another or in the pursuit of causing the wrongful execution of another is respectively construed as murder or attempted murder. Prosecutions for perjury are rare. The rules for perjury also apply when a person has made a statement under penalty of perjury even if the person has not been sworn or affirmed as a witness before an appropriate official, such as a US income tax return. Subornation of perjury, attempting to induce another to commit perjury, is itself a crime in the United States, Kenya, Scotland and several other English-speaking Commonwealth nations.

Did You Know?

• Perjury is also known as forswearing.
• In some jurisdictions, no crime has occurred when a false statement is made while under oath unless it is material to the outcome of the proceeding.
• In the United States, federal law provides criminal penalties of up to 5 years for general perjury (18 U.S.C. § 1621) and up to 3 years for tax return perjury (26 U.S.C. § 7206(1)).
• In Queensland, Australia, the maximum penalty for perjury is 7 years imprisonment, or 14 years if committed with intent to procure a conviction for a crime punishable by life imprisonment.

The Legal Architecture of Perjury

Perjury, sometimes called forswearing, sits at the intersection of oath-taking and legal integrity. At its core, it is the deliberate act of swearing a false oath or falsifying an affirmation to tell the truth—whether delivered orally or committed to writing—about matters that are material to an official proceeding. Like most offenses within the common law tradition, a conviction requires two elements working in tandem: the mental intent (mens rea) to deceive and the actual commission of the act (actus reus). Both must be present. The statement must concern a fact that genuinely bears on the outcome of the proceeding; a lie about something tangential does not trigger perjury liability. The offense is not limited to courtroom testimony. It extends to any formal setting where a person is called upon to affirm truthfulness under legal authority, making it a safeguard that protects the entire architecture of adjudication from deliberate corruption.

Boundaries: What Falls Outside Perjury

The law draws careful lines around what constitutes perjury, and much that sounds like lying does not cross that threshold. Statements that are objectively true cannot be perjury, even if they arguably constitute an omission. Lying about matters immaterial to the legal proceeding is also outside the offense's scope. Perhaps most importantly, statements that involve an interpretation of fact are excluded, because people routinely draw inaccurate conclusions without malice or make honest mistakes without any intent to deceive. A witness may hold a genuine but mistaken belief about certain facts, or their recollection may simply be imperfect, or they may perceive the accurate way to state the truth differently than another person would. In some jurisdictions, no crime has even occurred when a false statement is made under oath; criminal culpability attaches only at the moment the declarant falsely asserts the truth of material statements. For instance, misstating one's age is not perjury unless age is a fact that materially influences the legal result, such as eligibility for retirement benefits or whether a person had the legal capacity to act.

Severity and Sentencing Around the World

Perjury is treated as a grave offense because it can be wielded to usurp the authority of courts and produce miscarriages of justice. In Canada, it is an indictable offense carrying a maximum of fourteen years' imprisonment. In England and Wales, it is a statutory crime punishable by up to seven years in prison, a fine, or both. Under U.S. federal law, perjury is classified as a felony with a maximum sentence of five years, and it is a felony in most states as well. California's Penal Code goes further, allowing perjury to be treated as a capital offense when it causes a wrongful execution; in such cases the act is construed as murder or attempted murder and is itself punishable by execution in jurisdictions that retain the death penalty. Australia's states and territories impose penalties ranging from seven to fifteen years, with life imprisonment possible in Queensland, the Northern Territory, and Western Australia when perjury was committed to convict someone of a life-sentence offense. Despite these severe penalties, actual prosecutions for perjury remain rare.

Beyond the Witness Stand

Perjury's reach extends well past the courtroom. The rules apply whenever a person makes a statement under penalty of perjury, even without being formally sworn in before an official. It also applies to evidence given under the Canada Evidence Act or pursuant to mutual legal assistance orders. Additionally, in the United States, Kenya, Scotland, and several other English-speaking Commonwealth nations, subornation of perjury—attempting to induce another person to commit perjury—is itself a separate criminal offense, creating a second layer of accountability for those who orchestrate deception rather than merely participate in it.