A factor is calculated in accordance with a member's basic annual salary, family size (that is husband, wife and children) and age of a member.
Inani elithile labatshatileyo libalelwa ngomvuzo wonyaka osisigxina welungu, ubukhule/ubuncinci bosapho lwalo (lilonke umyeni, umfazi kunye nabantwana) kunye neminyaka yelungu.