Criminal Code Act 1899

Any person who administers an oath, or takes a solemn declaration or affirmation or affidavit, touching any matter with respect to which the person has not by law any authority to do so, is guilty of a misdemeanour, and is liable to imprisonment for 1 year.

This section does not apply to an oath, declaration, affirmation, or affidavit, administered or taken before a justice in any matter relating to the preservation of the peace or the punishment of offences, or relating to inquiries respecting sudden death, or to proceedings before the Legislative Assembly or a committee of the Legislative Assembly; nor to an oath, declaration, affirmation, or affidavit, administered or taken for some purpose which is lawful under the laws of another country, or for the purpose of giving validity to an instrument in writing which is intended to be used in another country.