965.0.2. An employer may deduct, in computing his income for a taxation year ending after 31 December 1990, the amount that, by virtue of paragraph q of subsection 1 of section 20 of the Income Tax Act (Revised Statutes of Canada, 1985, chapter 1, 5th Supplement), is allowed as a deduction for the year in computing his income for the purposes of the said Act.