Calculation of minimum payments
33.—(1) Subject to paragraphs (3) and (4), minimum payments shall be calculated in accordance with section 4(2) of the Act, so however that each such calculation shall be to the nearest penny and any amount of half a penny or less shall be disregarded.
(2) In the alternative, but subject to paragraphs (3) to (5), minimum payments may be calculated in accordance with a scale prepared for that purpose by the Department.
(3) Where the amount of the earnings to which the scale is to be applied does not appear in the scale, the amount of the minimum payments shall be calculated by reference to the next smaller amount of earnings in the appropriate column in the scale.
(4) Where the scale would, but for the period to which it relates, be appropriate and the earnings period in question is a multiple of the period in the scale, the scale shall be applied by dividing the earnings in question so as to obtain the equivalent earnings for the period to which the scale relates and by multiplying the amount of minimum payments shown in the scale as appropriate to those equivalent earnings by the same factor as the earnings were divided.
(5) Unless the Department agrees to the contrary, all the minimum payments to be made in a tax year in respect of the earnings paid to or for the benefit of an earner in respect of his employed earner’s employment or, where he has more than one such employment and the earnings therefrom are aggregated under paragraph 1(1) of Schedule 1 to the Contributions and Benefits Act, in respect of those employments, shall be calculated either in accordance with paragraph (1) or in accordance with paragraph (2) but not partly in accordance with one and partly in accordance with the other of those paragraphs.