25.1 (1) For the purposes of subsection (2), quarter means any of the following periods in a year:
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(2) For the purposes of
(a) every provision of the Act that requires interest at a prescribed rate to be paid to the Receiver General, the prescribed rate in effect during any particular quarter is the total of
(i) the rate that is the simple arithmetic mean, expressed as a percentage per annum and rounded to the next higher whole percentage where the mean is not a whole percentage, of all amounts each of which is the weekly average equivalent yield, expressed as a percentage per annum, of Government of Canada Treasury Bills that mature approximately three months after their date of issue and that are sold at a weekly auction of Government of Canada Treasury Bills during the first month of the quarter preceding the particular quarter, and
(b) every provision of the Act that requires interest at a prescribed rate to be paid or applied on an amount payable by the Minister, the prescribed rate in effect during any particular quarter is the total of
(i) the rate determined under subparagraph (a)(i) in respect of the particular quarter, and
