Consider an amortizing loan. The amount borrowed initially is $21618, the interest rate is 5% APR, and the loan is to be repaid in equal monthly payments over 17 years. As we know, while each monthly payment will be the same, the amounts of interest and principle paid will change from payment to payment. How much of the very first payment is interest?
$ 90.08
Working:
Step-1:Monthly Payment Calculation | ||||||||||||
Monhly Payment | = | Loan Amount/Cumulative discount factor | ||||||||||
= | $ 21,618 | / | 137.199 | |||||||||
= | $ 157.57 | |||||||||||
Working: | ||||||||||||
Cumulative discount factor | = | (1-(1+i)^-n)/i | Where, | |||||||||
= | (1-(1+0.00417)^-204)/0.00417 | i | = | 5%/12 | = | 0.00417 | ||||||
= | 137.199 | n | = | 17*12 | = | 204 | ||||||
Step-2:Repayment schedule of first month | ||||||||||||
Month | Beginning Loan balance | Interest for the month | Monthly Payment | Principal Repayment | Ending Loan Balance | |||||||
a | b=a*5%*1/12 | c | d=c-b | a-d | ||||||||
1 | $ 21,618.00 | $ 90.08 | $ 157.57 | $ 67.49 | $ 21,550.51 | |||||||
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