Marriage Act 1961

Subject to this section, a child of a marriage that is void shall be deemed for all purposes to be the legitimate child of his or her parents as from his or her birth or the commencement of this Act, whichever was the later, if, at the time of the intercourse that resulted in the birth of the child or the time when the ceremony of marriage took place, whichever was the later, either party to the marriage believed on reasonable grounds that the marriage was valid.

Subsection (1) does not apply unless one of the parents of the child was domiciled in Australia at the time of the birth of the child or, having died before that time, was domiciled in Australia immediately before his or her death.

Subsection (1) applies in relation to a child whether the child was born before or after the commencement of this Act, whether the ceremony of marriage took place before or after the commencement of this Act and whether the ceremony of marriage took place in or outside Australia.

This section does not apply in relation to a child so as to affect any estate, right or interest in real or personal property to which a person has become, or may become, entitled, either mediately or immediately, in possession or expectancy, by virtue of a disposition that took effect, or by devolution by law on the death of a person who died, before the birth of the child or the commencement of this Act, whichever was the later.