26. Where, for a fiscal year of a pension plan, the total of the supplementary sums - determined in accordance with section 25 or an equivalent provision of the applicable Ontario legislation - is less than the overall supplementary sum for the fiscal year, an amount must be added to the supplementary sum payable to the affected component of a pension plan at the time that sum is calculated.
That amount corresponds to a proportion of the amount by which the overall supplementary sum exceeds the total of the supplementary sums determined for the fiscal year. That proportion is represented by the technical actuarial deficiency of the affected component of the pension plan at the date of the end of the previous fiscal year divided by the total of the technical actuarial deficiencies of the affected components of the pension plans at that same date.
For the purposes of the second paragraph, a pension plan to which the supplemental sum cannot be paid for the fiscal year due to the termination of the plan is not taken into account.