101. For the purposes of this Part, where the capital cost to a taxpayer of a depreciable property was reduced, because of sections 485 to 485.18 or a taxpayer deducted a particular amount, other than a prescribed amount, under subsection 5 or 6 of section 127 of the Income Tax Act (Revised Statutes of Canada, 1985, chapter 1, 5th Supplement) in respect of a depreciable property in computing his tax payable under the said Act or received or is entitled to receive assistance, other than prescribed assistance, from a government, municipality or other public authority in respect of, or for the acquisition of, depreciable property, whether as a subsidy, grant, forgivable loan, deduction from tax, investment allowance or as any other form, the capital cost of the property to the taxpayer at any particular time is deemed to be the amount by which the aggregate of the capital cost of the property, determined without reference to this section and sections 101.6, 101.7 and 485 to 485.18 and the amount of the assistance, in respect of that property, repaid by the taxpayer, pursuant to an obligation to do so, before the disposition of the property and before the particular time, exceeds the aggregate of(a) where the property was acquired in a taxation year ending before the particular time, all particular amounts deducted under the said subsections 5 and 6 by the taxpayer, in respect of that property, for a taxation year ending before the particular time and before the disposition of that property;
(b) the amount of assistance the taxpayer has received or is entitled, before the particular time, to receive in respect of that property before the disposition thereof; and
(c) any amount by which the capital cost of the property to the taxpayer is required, because of sections 485 to 485.18, to be reduced at or before that particular time.