Income Tax Act — I-3.3 125.3
Deduction of Part I.3 tax 125.3 (1) There may be deducted in computing the tax payable under this Part for a taxation year by a corporation (other than a corporation that was throughout the year a financial institution, within the meaning assigned by section 190) an amount equal to such part as the corporation claims of its unused Part I.3 tax credits for any of its 7 immediately preceding taxation years ending before 1992, to the extent that that amount does not exceed the amount, if any, by which (a) its Canadian surtax payable for the year exceeds (b) the amount that would, but for subsection 181.1(4), be its tax payable under Part I.3 for the year. Idem (1.1) There may be deducted in computing the tax payable under this Part for a taxation year by a corporation that was a financial institution (within the meaning assigned by section 190) throughout the year an amount equal to such part as the corporation claims of its unused Part I.3 tax credits for any of its 7 immediately preceding taxation years ending before 1992, to the extent that that amount does not exceed the lesser of (a) the amount, if any, by which its Canadian surtax payable for the year exceeds the amount that would, but for subsection 181.1(4), be its tax payable under Part I.3 for the year, and (b) the amount, if any, by which its tax payable under this Part (determined without reference to this section) for the year exceeds the amount that would, but for subsections 181.1(4) and 190.1(3), be the total of its taxes payable under Parts I.3 and VI for the year. Special rules (2) For the purposes of this section, (a) no amount may be claimed under subsection 125.3(1) in computing a corporation’s tax payable under this Part for a particular taxation year in respect of its unused Part I.3 tax credit for another taxation year until its unused Part I.3 tax credits for taxation years preceding the other year that may be claimed for the particular year have been claimed; and (b) an amount in respect of a corporation’s unused Part I.3 tax credit for a taxation year may be claimed under subsection 125.3(1) in computing its tax payable under this Part for another taxation year only to the extent that it exceeds the total of all amounts each of which is the amount claimed in respect of that unused Part I.3 tax credit in computing its tax payable under this Part for a taxation year preceding that other year. Acquisition of control (3) Where, at any time, control of a corporation has been acquired by a person or group of persons, no amount in respect of its unused Part I.3 tax credit for a taxation year ending before that time is deductible by the corporation for a taxation year ending after that time and no amount in respect of its unused Part I.3 tax credit for a taxation year ending after that time is deductible by the corporation for a taxation year ending before that time, except that (a) where a business was carried on by the corporation in a taxation year ending before that time, its unused Part I.3 tax credit for that year is deductible by the corporation for a particular taxation year ending after that time only if that business was carried on by the corporation for profit or with a reasonable expectation of profit throughout the particular year and only to the extent of that proportion of the corporation’s Canadian surtax payable for the particular year that (i) the amount, if any, by which (A) the total of its income for the particular year from that business and, where properties were sold, leased, rented or developed or services rendered in the course of carrying on that business before that time, its income for the particular year from any other business substantially all the income of which was derived from the sale, leasing, rental or development, as the case may be, of similar properties or the rendering of similar services exceeds (B) the total of all amounts each of which is an amount deducted under paragraph 111(1)(a) or (d) for the particular year by