(1) A is the aggregate of all amounts each of which is an amount that would be the net tax for a reporting period of the investment plan that is included in the particular fiscal year if that net tax were determined,(a) if no election under section 50 of the Selected Listed Financial Institutions Attribution Method (GST/HST) Regulations, or under section 433.19.4 of the Act, is in effect throughout the particular fiscal year, as if the investment plan's percentage as regards Québec for the taxation year preceding the particular taxation year were determined in accordance with the rules set out in section 60.1 of those Regulations and Québec were a participating province within the meaning of subsection 1 of section 123 of the Excise Tax Act; and
(b) if an election under section 50 of the Selected Listed Financial Institutions Attribution Method (GST/HST) Regulations, or under section 433.19.4 of the Act, is in effect throughout the particular fiscal year, as if the investment plan's percentage as regards Québec for the particular taxation year in which the particular fiscal year ends were determined in accordance with the rules set out in section 60.1 of those Regulations and Québec were a participating province within the meaning of subsection 1 of section 123 of the Excise Tax Act; and