Free US Law Dictionary

Perjury

Perjury (also called forswearing) is the act of lying or making verifiably false statements on a material matter under oath or affirmation in a court of law or in any of various sworn statements in writing. Perjury is a crime because the witness has sworn to tell the truth and, for the credibility of the court, witness testimony must be relied on as being truthful. Perjury is considered a serious offense as it can be used to usurp the power of the courts, resulting in miscarriages of justice. In the United States, for example, the general perjury statute under Federal law provides for a prison sentence of up to five years, and is found at 18 U.S.C. Â§ 1621. See also 28 U.S.C. Â§ 1746.

The rules for perjury also apply to witnesses who have affirmed they are telling the truth. Affirmation is used by a witness who is unable to swear to tell the truth. For example, in the United Kingdom a witness may swear on the Bible or other holy book. If a witness has no religious beliefs, or does not wish to swear on a holy book, the witness may make an affirmation he or she is telling the truth instead.

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. An example of this is the United States' income tax return, which, by law, must be signed as true and correct under penalty of perjury (see 26 U.S.C. Â§ 6065). Federal tax law provides criminal penalties of up to three years in prison for violation of the tax return perjury statute. See 26 U.S.C. Â§ 7206(1).

Statements of interpretation of fact are not perjury because people often make inaccurate statements unwittingly and not deliberately. Individuals may have honest but mistaken beliefs about certain facts or their recollection may be inaccurate. Like most other crimes in the common law system, to be convicted of perjury one must have had the mens rea to commit the act, and to have actually committed the actus reus.

In some countries such as France and Germany, suspects cannot be heard under oath or affirmation and thus cannot commit perjury, regardless of what they say during their trial.