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Hoots : Compute Loan Balance for a specific month (period) on an amortized loan I'm looking for is a method that will allow me to compute the Loan Balance value for a specific period (month) in the amortization table without having - freshhoot.com

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Compute Loan Balance for a specific month (period) on an amortized loan
I'm looking for is a method that will allow me to compute the Loan Balance value for a specific period (month) in the amortization table without having to compute all of the values before it.

Let's say: your bank loan of 100000$ at the rate of 10% with annual rate compounded monthly and for a maturity of a 10 years.

So we have following information:

PV = 100000$,
Time (or n) = 10,
Frequency (#) = 12 (monthly),
Rate (r) = 10% or 0.1.

We should find 66th month Loan Balance value without establishing whole table. Please do not suggest to calculate with Future Value (FV of annuity) formula replacing Time (n) = by 66 (month that we want to find value)


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Given

PV = principal
i = periodic rate
m = number of periods
d = periodic payment

d = PV i (1 + 1/((1 + i)^m - 1))

the balance b remaining in month x is

b = (d + (1 + i)^x (i PV - d))/i

Applying your figures

PV = 100000
i = 0.1/12
m = 10*12

? d = 1321.51

x = 66
? b = 57276.53

Check: final balance

x = 120
? b = 0

Formulae

Formula for periodic payment - loan payment formula

Formula for loan balance - inhomogeneous difference equation (Arne Jensen, Aalborg Uni.)


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