If any of the penalty remains unpaid after it is due, the entity is liable to pay the general interest charge (within the meaning of the Taxation Administration Act 1953 ) on the unpaid amount of the penalty for each day in the period that:
(a) started at the beginning of the day by which the amount was due to be paid; and
(b) finishes at the end of the last day, at the end of which, any of the following remains unpaid:
(i) the amount;
(ii) general interest charge on any of the amount.
Note: The general interest charge is worked out under Part IIA of the Taxation Administration Act 1953 .