Taxation Administration Act 1953

The Commissioner may, in the manner he or she determines, allocate the amount to an RBA of the entity or, if the entity is a member of an RBA group, to an RBA of another member of the group.

The Commissioner must then also apply the amount against the following kinds of debts (if there are any):

tax debts that have been allocated to that RBA;

general interest charge on such tax debts.

To the extent that the amount is not applied under subsection (2), it gives rise to an excess non‑RBA credit in favour of the entity that:

is equal to the part of the amount that is not applied; and

relates to the RBA to which the amount was allocated.