1. A person commits the offense of perjury if, with the purpose to deceive, he or she knowingly testifies falsely to any material fact upon oath or affirmation legally administered, in any official proceeding before any court, public body, notary public or other officer authorized to administer oaths.

2. A fact is material, regardless of its admissibility under rules of evidence, if it could substantially affect, or did substantially affect, the course or outcome of the cause, matter or proceeding.

Attorney's Note

Under the Missouri Laws, punishments for crimes depend on the classification. In the case of this section:
ClassPrisonFine
Class A felonybetween 10 years and life
Class B felonybetween 5 and 15 years
Class D felonyup to 7 yearsup to $10,000
Class E felonyup to 4 yearsup to $10,000
For details, see Mo. Rev. Stat.§ 558.011

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Terms Used In Missouri Laws 575.040

  • Conviction: A judgement of guilt against a criminal defendant.
  • Defendant: In a civil suit, the person complained against; in a criminal case, the person accused of the crime.
  • Deposition: An oral statement made before an officer authorized by law to administer oaths. Such statements are often taken to examine potential witnesses, to obtain discovery, or to be used later in trial.
  • Evidence: Information presented in testimony or in documents that is used to persuade the fact finder (judge or jury) to decide the case for one side or the other.
  • Grand jury: agreement providing that a lender will delay exercising its rights (in the case of a mortgage,
  • Oath: A promise to tell the truth.
  • person: may extend and be applied to bodies politic and corporate, and to partnerships and other unincorporated associations. See Missouri Laws 1.020
  • Preliminary hearing: A hearing where the judge decides whether there is enough evidence to make the defendant have a trial.
  • Trial: A hearing that takes place when the defendant pleads "not guilty" and witnesses are required to come to court to give evidence.

3. Knowledge of the materiality of the statement is not an element of this crime, and it is no defense that:

(1) The person mistakenly believed the fact to be immaterial; or

(2) The person was not competent, for reasons other than mental disability or immaturity, to make the statement.

4. It is a defense to a prosecution under subsection 1 of this section that the person retracted the false statement in the course of the official proceeding in which it was made provided he or she did so before the falsity of the statement was exposed. Statements made in separate hearings at separate stages of the same proceeding, including but not limited to statements made before a grand jury, at a preliminary hearing, at a deposition or at previous trial, are made in the course of the same proceeding.

5. The defendant shall have the burden of injecting the issue of retraction under subsection 4 of this section.

6. The offense of perjury committed in any proceeding not involving a felony charge is a class E felony.

7. The offense of perjury committed in any proceeding involving a felony charge is a class D felony unless:

(1) It is committed during a criminal trial for the purpose of securing the conviction of an accused for any felony except murder, in which case it is a class B felony; or

(2) It is committed during a criminal trial for the purpose of securing the conviction of an accused for murder, in which case it is a class A felony.