(b) B is the amount by whichi. the aggregate of all amounts each of which is deemed to have been paid before the particular time out of the NISA Fund No. 2(1) of the taxpayer under section 92.5.2.1 or section 656.3 or 660.1, as it read in its application to the taxpayer’s taxation year 2015, or
(2) of another person under section 437.1 or 462.0.1, on being transferred to the taxpayer’s NISA Fund No. 2, exceeds
ii. the aggregate of all amounts each of which is the amount by which an amount otherwise determined under this section in respect of a payment out of the taxpayer’s NISA Fund No. 2, before the particular time, was reduced because of the letter described in this subparagraph.