When interest charge is due and payable
(1) The interest charge under section 174 or 175 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 174 or 175 for a day is a debt due to the Commonwealth by the person.
Provisions that do not apply to interest charge debt
(3) Subsection 173(1) does not apply in relation to the debt referred to in subsection (2) of this section.