Section 15.3 — Canada Pension Plan: Special rule applicable in prescribed circumstances

If an employer has filed a return in accordance with this Part showing an amount as the salary and wages on which contributions have been made by an employee for a year under this Act, the amount so shown, multiplied by the contribution rate, the first additional contribution rate or the second additional contribution rate, as the case may be, for employees for the year, may, in prescribed circumstances, be substituted for the amount shown in the return as the aggregate of the amounts deducted by that employer on account of the employee’s contributions for the year under this Act, in calculating the amount to be determined under subsection 15(1), 15.1(1) or 15.2(1).