How to Calculate Flat Rate Loan Repayment?

I received a call from a banker last week, offering me a low interest personal loan of RM RM27,000 at 4.88% per year, with 3 or 5 years repayment terms. The idea put forth to me was that I could use this RM 27,000 to do some investment which probably can generate more than 8% return. Do you think it is a good idea to take up the loan?

However, I found that I would need to pay much higher interest as it’s based on a flat interest rate. For the flat interest rate calculation, you will be charged on the original principal amount, no matter how much you have paid off. So, it’s totally not same with our home loan interest in which it’s calculated based on monthly reducing balance, and you’ll be charged only on the outstanding amount.

Consequently, the effective interest rate (EIR) is higher than the normal flat rate. As a result, a 4.88% personal loan would roughly equal to a monthly reducing balance interest rate of 9-10%. So, be aware of the personal loan attractive offer next time!

I have done a simple calculation to illustrate the total interest that I would have to pay on this RM 27,000 based on flat rate loan of 4.88%. See below: