Income Tax Act — I-3.3 (a)
undepreciated capital cost to a taxpayer of depreciable property of a prescribed class as of any time means the amount determined by the formula (A + B + C + D + D.1) − (E + E.1 + E.2 + F + G + H + I + J + K) where A is the total of all amounts each of which is the capital cost to the taxpayer of a depreciable property of the class acquired before that time, B is the total of all amounts included in the taxpayer’s income under this section for a taxation year ending before that time, to the extent that those amounts relate to depreciable property of the class, C is the total of all amounts each of which is such part of any assistance as has been repaid by the taxpayer, pursuant to an obligation to repay all or any part of that assistance, in respect of a depreciable property of the class subsequent to the disposition thereof by the taxpayer that would have been included in an amount determined under paragraph 13(7.1)(d) had the repayment been made before the disposition, D is the total of all amounts each of which is an amount repaid in respect of a property of the class subsequent to the disposition thereof by the taxpayer that would have been an amount described in paragraph 13(7.4)(b) had the repayment been made before the disposition, D.1 is the total of all amounts each of which is an amount paid by the taxpayer before that time as or on account of an existing or proposed countervailing or anti-dumping duty in respect of depreciable property of the class, E is the total depreciation allowed to the taxpayer for property of the class before that time, including, if the taxpayer is an insurer, depreciation deemed to have been allowed before that time under subsection (22) or (23) as they read in their application to the taxpayer’s last taxation year that began before November 2011, E.1 is the total of all amounts each of which is an amount by which the undepreciated capital cost to the taxpayer of depreciable property of that class is required (otherwise than because of a reduction in the capital cost to the taxpayer of depreciable property) to be reduced at or before that time because of subsection 80(5), E.2 is the total of all amounts each of which is an amount by which the undepreciated capital cost to the taxpayer of depreciable property of that class is required to be reduced at or before that time because of subsection 81(6), F is the total of all amounts each of which is an amount in respect of a disposition before that time of property (other than a timber resource property) of the taxpayer of the class, and is the lesser of (a) the proceeds of disposition of the property minus any outlays and expenses to the extent that they were made or incurred by the taxpayer for the purpose of making the disposition, and (b) the capital cost to the taxpayer of the property, G is the total of all amounts each of which is the proceeds of disposition before that time of a timber resource property of the taxpayer of the class minus any outlays and expenses to the extent that they were made or incurred by the taxpayer for the purpose of making the disposition, H is, where the property of the class was acquired by the taxpayer for the purpose of gaining or producing income from a mine and the taxpayer so elects in prescribed manner and within a prescribed time in respect of that property, the amount equal to that portion of the income derived from the operation of the mine that is, by virtue of the provisions of the Income Tax Application Rules relating to income from the operation of new mines, not included in computing income of the taxpayer or any other person, I is the total of all amounts deducted under subsection 127(5) or (6), 127.44(3), 127.45(6), 127.48(3), 127.49(6) or 127.491(10) in respect of a depreciable property of the class of the taxpayer, in computing the taxpayer’s tax payable for a taxation year ending before that time and subsequent to the disposition of that property by the taxpayer, J is the total of all amount