When interest charge is due and payable
(1) The interest charge under section 1229A or 1229B for a day is due and payable to the Commonwealth at the end of that day.
Interest charge is a debt
(2) The interest charge under section 1229A or 1229B for a day is a debt due to the Commonwealth by the person.
Provisions that do not apply to interest charge debt
(3) Subsection 1229(1) does not apply in relation to the debt referred to in subsection (2) of this section.