772.6. A taxpayer who is an individual resident in Québec on the last day of a taxation year, or that is a corporation resident in Canada that carries on a business in Québec at any time in a taxation year, may deduct from the tax otherwise payable under this Part for the year(a) in the case of an individual, the amount by which the non-business-income tax the individual has paid for the year to the government of a foreign country in respect of income from a source situated in that country, exceeds the aggregate ofi. the deduction granted to the individual in respect of that income for the year under subsection 1 of section 126 of the Income Tax Act (R.S.C. 1985, c. 1 (5th Suppl.)), and
ii. (subparagraph repealed),
iii. where the individual is required under section 127.5 of the Income Tax Act to pay tax for the year, an amount in respect of that income is computed under subsection 2 of section 127.54 of that Act, for the purpose of determining the tax, and the amount so computed is equal(1) to the amount referred to in paragraph a of that subsection 2, the amount that would be referred to in that paragraph if the reference therein to section 126 of that Act were replaced by a reference to subsection 1 of that section 126;
(2) to the amount referred to in paragraph b of that subsection 2, such portion of the amount referred to in that paragraph b as may reasonably be regarded as attributable to income referred to in subparagraph i of paragraph b of subsection 1 of section 126 of that Act; and
(b) in the case of a corporation, the proportion of the amount by which the foreign tax deduction that would be granted to the corporation for the year under subsection 1 of section 126 of the Income Tax Act, if the deduction referred to in subsection 1 of section 124 of that Act were not taken into account and the rates of 28%, 16.5% and 15% referred to in A of the formula in subsection 4.2 of that section 126 were replaced by rates of 38%, 26.5% and 25%, respectively, exceeds the deduction granted for the year under subsection 1 of that section 126 that the corporation’s business for the year carried on in Québec is of its business carried on in Canada, computed in the manner prescribed in the regulations made under section 771, with the necessary modifications.