Flat Interest vs Reducing Interest in Malaysia: Which Loan Costs Less?

Let's start with the basics. In simple terms, interest is the cost of borrowing money. It is the “fee” you pay to banks or financial institutions when you take out a loan. 

⚠️ Here’s the catch: the interest rate alone doesn’t tell you the full cost of a loan. What matters more is how loan interest is calculated. This is where the key difference between flat interest loans and reducing balance loans comes in.

Flat interest, also known as a flat rate loan, is commonly used for car loans (hire purchase) and personal loans in Malaysia.

How Flat Interest Works:

• Interest is calculated using the original loan amount for the entire loan tenure.

• The interest charged doesn’t decrease, even if you have paid off part of the loan.

• Monthly installments are fixed and predictable.

Flat Interest Example:

• You borrow RM10,000 at 5% p.a. for 3 years:

• Total Interest = RM10,000 × 5% × 3 = RM1,500 

• Total repayment = RM11,500

Even after paying for 2 years, you are still charged interest for the full RM10,000. This is why flat interest loans often look “cheap” but result in a higher total loan repayment compared to reducing balance loans.

Reducing interest, also known as the reducing balance method, is commonly used for housing loans and flexi home loans in Malaysia.

How Reducing Interest Works:

• Interest is calculated on the outstanding loan balance, not the original amount.

• As you repay the principal, the interest charged gradually decreases over time.

• You generally pay less total interest compared to flat rate loans.

Reducing Interest Example:

• You borrow RM10,000 at 5% p.a. for 3 years:

• First month interest = 5% × RM10,000 ÷ 12

• Following month’s interest is calculated on the remaining balance: 5% × (RM10,000 – principal paid) ÷ 12 

• Total interest ≈ RM789.52

• Total repayment ≈ RM10,789.52

👉 Compared to flat interest, you save over RM700 in interest on the same loan amount.

With a reducing interest loan, your monthly installment may remain the same even as you pay off the loan, but the breakdown between interest and principal changes every month. 

As your outstanding loan balance decreases, less interest is charged, allowing more of your installment to go towards repaying the principal. Over time, this results in lower total interest paid across the loan tenure👍.

If your goal is to save on interest, reducing interest loans are usually the better option. However, the type of loan you’re applying for matters, e.g. car and personal loans are usually flat interest, while housing loans typically use reducing interest.

💡 Pro Tip: A “low” flat interest rate does not mean a cheaper loan. Always compare the total repayment amount, not just the interest rate advertised or offered.

Understanding the difference between flat interest vs reducing interest in Malaysia can help you avoid expensive mistakes and save thousands of ringgit over time 💰.

Before signing any loan agreement:

✔️ Read the terms carefully

✔️ Compare total repayment amounts

✔️ Think long-term, not just monthly installments

A smarter loan choice today can mean less financial stress tomorrow 🌱.