59—Recovery on default (section 154 of Act)
(1) For the purposes of section 154(3)(b) of the Act, the rate of penalty interest on an amount in arrears is a simple interest rate equal to 5% of the amount in arrears (expressed as an annual rate and applied with respect to the relevant period) plus the TAA market rate for the financial year in which, under Part 9 of the Act, notice of an assessment is given, with the interest to be calculated at a daily rate over the relevant period.
(2) In this regulation—
"relevant period" means the period during which the amount in arrears is unpaid;
"TAA market rate" means the market rate as defined in section 26 of the Taxation Administration Act 1996
.