Sample Computations: studio type unit @ 4th to 6th floor computation option 1: 30/70 floor area (studio type) 28 sqm. total contract price p 2,100,000 Option 1: 10% downpayment 420,000 less reservation fee 25,000 less 5% discount within 7days 21,000 net downpayment 174,500 20% dp 420,000 36 equal monthly dp..no interest 11,667.67 70% balance 1,470,000 monthly amortization thru bank (ps bank) : if 10 years @ 10.5% interest/anum 19,834.71 if 20 years @ 11% interest/anum 15,173.34