26. Any refund of contributions to be made following a death must be reduced by the sums awarded to the spouse with interest compounded annually at the rate determined for each period under Schedule VI to the Act respecting the Government and Public Employees Retirement Plan (chapter R-10) until 31 May 2009 and in accordance with Schedule II to the Régime de retraite des membres de la Sûreté du Québec as of 1 June 2009. Those sums are accrued from the date of assessment to the date of death, except for the period during which a retirement pension is paid, and increased by interest compounded annually at the rate in Schedule VII to the Act respecting the Government and Public Employees Retirement Plan in force on the member’s date of death and calculated from the date following that date until the date on which the refund is made.