(a) a person has received an advance payment of a social security entitlement (the first entitlement ) or an instalment of such an advance payment; and
(b) the first entitlement ceases to be payable to the person; and
(c) when the first entitlement ceases to be payable, the person has not repaid the whole of the advance payment or instalment; and
(d) the person does not receive another social security entitlement immediately after the first entitlement ceases to be payable;
the amount that has not been repaid is a debt due to the Commonwealth.
Note: For social security entitlement see subsection 23(1).