MUP is automatically generated for all Operationally Ready National Service (ORNS) and SAFVC Volunteer (SV) activities except IPPT, NS FIT and mobilisation. The auto-generated MUP amount is based on wage data submitted by your employer to CPF Board two to three months before your ORNS/SV activity, specifically: (a) CPF Ordinary Wages (OW) data; and (b) the monthly average of the Additional Wages (AW) received in at least 8 out of 12 months after removing the two highest monthly AW values which are likely to be irregular payments such as bonuses. View sample calculations on the 'NSmen Payments' eService on the OneNS Portal.