John takes a $3000 loan from a bank at an annual effective interest rate of %15. She plans to pay off her debt with 35 monthly payments of $100 and a final balloon payment at the end of 3rd year. Find the value of balloon payment
Sol
Loan amount = $3000
Effective annual rate (r) = 15% p.a, Monthly rate = 15%/12 = 1.25%
Period (n) = 35 months
Monthly payment = $100
We have to compute the present value of annuity factor (PVIFA) from the following equation:
PVIFA = (1 - (1 + r)^-n) / r
PVIFA = (1 - (1 + 1.25%)^-35) / 1.25%
PVIFA = (1 - (1.0125)^-35) / 0.125
PVIFA = 28.207858
Now we have to compute the present value (PV) of monthly payments, from the following equation:
PV = Monthly payment x PVIFA
PV = 100 x 28.207858 = $2820.7858
Now compute the value of balloon payment from the following equation:
Balloon payment = Loan amount - PV of monthly payments x (1 + r)^n
Balloon payment = (3000 - 2820.7858) x (1 + 1.25%)^35
Balloon payment = 179.21 x (1.0125)^35 = $276.82
Therefore value of balloon payment will be $276.82
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