(1) The amount of the tax is an amount worked out under subsection ( 2) as if it were an amount of income tax payable by the company referred to in section 3.
(2) The amount referred to in subsection ( 1) is the lesser of:
(a) the outstanding amount of income tax payable by the former subsidiary referred to in section 45 - 25 of the Income Tax Assessment Act 1997 (including any amount of general interest charge, or any amount of interest or penalty payable under former section 170AA , 207 or 207A of the Income Tax Assessment Act 1936 , attributable to that amount); and
(b) the amount of income tax that would be payable by the former subsidiary for the income year in which the amount was included in its assessable income because of section 45 - 15 or 45 - 20 of that Act if:
( i ) that amount were its taxable income for the income year; and
(ii) it was not entitled to any tax offset for the income year;
including any amount of general interest charge, or any amount of interest or penalty payable under former section 170AA , 207 or 207A of the Income Tax Assessment Act 1936 , that would be attributable to that amount.
(3) The amount referred to in paragraph ( 2)(b) is reduced by any amount paid by a company (except the former subsidiary) that was a member of the former subsidiary's former wholly - owned group.