Male Singapore Permanent Residents (SPRs) who are granted SPR status under the first generation Professional/Technical Personnel and Skilled Workers Scheme (PTS) are exempted from National Service. However, male children who are granted PR status under their parents’ sponsorship are liable for National Service under the Enlistment Act. Male children under the age of 18 must serve two years in the National Service upon turning 18. They are required to register for NS upon reaching 16½ years old and will be scheduled for enlistment at the earliest opportunity after turning 18 years old. If they are pursuing full-time studies, deferment from full-time NS may be granted if they meet the deferment conditions stipulated by the Ministry of Defence. They are also required to serve 40 days of Operationally Ready National Service (i.e. reservist duty) every year until the age of 50 years (for officers) or 40 years (for non-officers).
Children of non-SPR or non-citizen individuals are not required to register for NS.
Some foreigners feel the mandatory CPF contributions are a disadvantage. If you wish to withdraw all your CPF savings, the only option is to denounce your permanent residence status.