•   The Registrar can make a determination under this Part to depart from the provisions of this Act relating to administrative assessment of child support for a child.

•   A liable parent or a carer entitled to child support can apply for such a determination, or the Registrar can make a determination on his or her own initiative.

•   The Registrar must not make a determination in respect of a day that is more than 18 months earlier without leave of a court under section   112.

•   The grounds for deciding whether to make a determination are the same as a court uses in deciding whether to make an order under Division   4 of Part   7.

•   If the Registrar is considering making a determination, the parties can make a child support agreement in relation to child support payable for the child instead of the Registrar making the determination.

•   Under section   80 of the Registration and Collection Act, certain persons can object to a decision to make or refuse to make a determination under this Part.