Victoria operates under the Oaths and Affirmations Act 2018, which replaced the older 2006 regime and prescribes a specific statutory declaration form. Only statements made on the current form are valid, and the list of authorised witnesses is defined by regulation rather than left open. The Act permits witnessing by audio-visual link under section 30A, subject to the witness seeing the declarant sign. A knowingly false statement is treated with real seriousness in Victoria, and the penalties for making false statements on oath or declaration are among the heaviest in the country. Anyone signing in Victoria should confirm their intended witness sits within the prescribed list before attending, because a well-meaning but unauthorised witness voids the document.
New South Wales uses the Oaths Act 1900 (NSW), which offers two alternative forms, the eighth and ninth schedules, differing mainly in their wording. Authorised witnesses within the state are typically a Justice of the Peace, an Australian legal practitioner, or a notary public, and the witness must see the declarant's face and be satisfied as to identity. Under section 25 of the Act, wilfully making a false declaration is an indictable offence carrying up to 5 years imprisonment, with substantial fines applying in the Local Court. NSW also penalises anyone who purports to witness a declaration without authority, so both sides of the signing carry legal exposure.
Queensland relies on the Oaths Act 1867, one of the oldest statutes still in force, supplemented by modern amendments that allow electronic signing and audio-visual witnessing. The authorised witness list is specific and includes Justices of the Peace, commissioners for declarations, legal practitioners, and certain special witnesses under part 6A. Queensland forms prompt the declarant to state the source of any fact declared on information and belief, and the witness must record their qualifying capacity precisely. A false statement is a criminal offence, and the declaration should never be signed before the witness is present.
Western Australia applies the Oaths, Affidavits and Statutory Declarations Act 2005, which requires the declaration to follow the form in Schedule 1. The Act sets clear witness categories and attaches a penalty of up to 12 months imprisonment for taking a declaration while not authorised to do so. As with the other states, WA now accommodates remote witnessing, but the declarant and witness must complete the process in a single continuous session so the witness genuinely observes the signature.