In: Finance
Mr. Jones has just bought a house for $250,000. He will make a down payment of 5% on the house, and pay for the rest with a mortgage. The Bank Le Friendly offers 10-year mortgage loans at 13% APR compounded semi-annually, with monthly mortgage payments starting today. What is the amount of Mr. Jones’s monthly mortgage payment?
A. $3,462.31 B. $3,498.84 C. $3,546.13 D. $3,647.40 E. $3,605.56
A. $3,462.31
Step - 1 .......... Find the Effective annual rate, when compounding is done Semi annually
Effective rate per year = (1.065)2 - 1 = 0.134225
Now calculate the monthly rate that equals this annual effective rate.......... Let such monthly interest rate = r
( 1 + r )12 - 1 = 0.134225
( 1 + r )12 = 1.134225
1 + r = 12th root of (1.134225) = 1.010551074
r = 0.010551074
Step - 2 ........ we have to find PVIFA ( Present value of Interest factor annuity) when annuity is immediate
This is given by ......... 1 + [ 1 - ( 1 + r ) -n ] / r
In the above formula ...... n = number of periods = 10 Years * 12 months = 120. But we have to take only 119, because 1st installment is immediate and for which 1 is added at the beginning of the formula.
= 1 + [ 1 - (1.010551074)-119 ] / 0.010551074 = 1 + 67.5958303671 = 68.5958303671
Step - 3 .......... Last step
Monthly Installment = Balance / PVIFA = (250000 * 0.95 ) / 68.5958303671 = 3462.31