Supplementary allowance payable at age fifty-five
23A person referred to in section 21 who has to his or her credit at least six months of pensionable service as a minister is entitled, upon attaining fifty-five years of age or at such later time as he or she ceases to be a member, in addition to the supplementary allowance to which he or she is entitled under section 21, to a supplementary allowance in an amount equal to fifty per cent of the minister’s pension calculated in accordance with subsection 11(3), notwithstanding that the person may not have attained sixty years of age.