19.1. For the purposes of sections 16.1 and 18, the amount of pension or pension credit that would be obtained on the basis of the sums awarded to the spouse at the date of assessment shall be established at that date in accordance with the actuarial method and assumptions provided for in section 7. The amount is presumed applicable at the date determined pursuant to subparagraph 3.1 of the first paragraph of section 3.
The amount of pension obtained pursuant to the first paragraph shall be indexed in the same manner as the pension would be if it were being paid at the date of assessment, from 1 January following that date to 1 January of the year during which that amount begins to apply.
If the amount of pension obtained pursuant to the first and second paragraphs or the amount of pension credit obtained pursuant to the first paragraph begins to apply before the determined date, the amount of pension or pension credit shall be reduced by 0.50% per month, calculated for each month between the date on which the amount of pension or pension credit begins to apply and that determined date, without exceeding 65% in the case of the reduction applicable to the amount of pension.
If the pensioner retired before the date of payment and if that date occurs after the determined date, the amount of pension obtained pursuant to the first and second paragraphs shall be increased by 0.50% per month, calculated for each month between the determined date and the date on which the amount of pension begins to apply, if the pensioner retired before the determined date, or for each month between the date on which he retired and the date on which that amount of pension begins to apply, if the pensioner retired on the determined date or thereafter.
If the amount of pension credit obtained pursuant to the first paragraph begins to apply after the determined date but before the date of the pensioner’s 65th birthday, it shall be increased by 0.50% per month, calculated for each month between the determined date and the date on which the amount of pension credit begins to apply.
If the amount of pension credit obtained pursuant to the first paragraph begins to apply on the date of the pensioner’s 65th birthday or after that date, it shall be increased by 0.50% per month, calculated for each month between the determined date and the date of his 65th birthday, and by 0.75% per month, calculated for each month between the latter date and the date on which the amount of pension credit begins to apply.