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房屋贷款算法,计算器BA II PLUS

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发表于 2008-9-25 13:29 | 显示全部楼层 |阅读模式
Assume: House value 300,000
& h8 a2 v5 q; u2 w4 I5 [        10% down payment - Q- H. L! V: \1 W; V! P3 z
        25 years mortgage (25 * 12 = 300 months); [' k! a4 G+ ^( u& R7 y$ c
        rate 5.24
: l; b' I$ m6 H* w6 f/ \8 c
" H. F0 q- q+ ?# q1.effective rate 0.43197466
! `  o7 t0 [1 d! A  in Canada it is common to have mortgages that have interest compounded semi-annually(5.24/2), with payments made monthly.
* o& F" i: K3 n  R! u   1 pv, 0 pmt, 1.0262 FV, 6 N ----- CPT I/Y = 0.43197466, |1 H: d; A$ U% d. D" A; Y7 P
2.Adjusted mortgage balance; D; l6 g0 J# _, b
  300,000 * 10% = 30,000 downpayment& [( F. k6 {" R+ u. S4 H
  300,000-30,000 = 270,000 mortgage requried% @* ?& r: g- ]/ n  f
  270,000/300,000 = 90% ---- 2% premium % of loan amount (CMHC)4 \: L- a( D( N8 `- z
  270,000 * 2% = 5,400
- `. c. J* U4 b0 i$ x1 A$ f6 R  h  adjusted mortgage balance: 270,000 + 5,400 = 275,400+ J: v# c7 y  T" q
3. PV 275,400, N 300, 0.43197466 I/Y, 0 FV, CPT PMT = $1637.20 monthly payment
; t: c# r, {  z5 w4 V4. TOTAL INTEREST PAID IN 25 YEAR ABOUT $216,157.48
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