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#1




Loan Question
Question: A tenyear adjustable rate mortgage loan of 23115 is being repaid with quarterly installments of 1000 based upon an initial interest rate of 12% compounded quarterly. Immediately after the twelfth payment the interest rate is increased to 14% compounded quarterly. The quarterly installments remain at 1000. Calculate the loan balance immediately after the 24th payment.
Answer: =23115 * (1.03)^12 * (1.035)^12  1000 s angle 12 @ 3% * (1.035)^12  1000 s angle 12 @ 3.5% =13752.39 This solution I understand. However, I tried to solve this question prospectively and got the incorrect answer. I said the loan balance after the 24th payment = 1000 a angle 16 @ 3.5% However, this equals 12094.12 
#2




The payment will change after the interest rate increase. This question is much easier to do with calculator functions. Calculate the outstanding balance at the time of the rate change as future value. Input as the new present value and set FV to 0. Reset the interest rate and recalculate the payment to fully payoff the loan over the remaining period. Calculate the outstanding balance at the specified time as a future value.

#4




I misread. If the payment stays the same then the number of remaining payments would have to change.

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