an extra charge to pay on some annuities to guarantee that if the policyholder dies his heirs will receive a benefit, and also that the insurance company will be compensated for an annuitant who lives longer than he or she should according to the mortality tables. nounan extra charge to pay on some annuities to guarantee that if the policyholder dies his heirs will receive a benefit, and also that the insurance company will be compensated for an annuitant who lives longer than he or she should according to the mortality tables.Also calledM&E; fee