Why a Flat-Rate Car Loan Costs More Than It Says

A flat-rate car loan charges interest on the full amount you borrowed for the whole tenure, even as you pay it down, so the real yearly cost is much higher than the quoted rate. Bank Negara Malaysia's own example shows a 3% flat rate over nine years costs the same as a 5.5% effective interest rate (EIR).

That gap is why Malaysia changed the law. The Hire-Purchase (Amendment) Act 2026, in force since 1 June 2026, moves new hire-purchase agreements to the EIR and the reducing balance method, with providers given until 31 March 2027 to complete the switch. But millions of existing car loans still run on the old flat-rate formula, and some offers during the transition may still be quoted that way. So it is worth understanding exactly how the old maths works.

How a flat rate is calculated

A flat rate takes the original loan amount, multiplies it by the rate and the number of years, and adds that interest on top at day one. The total is then split evenly across every month.

Take Bank Negara's example: RM100,000 borrowed over 9 years (108 months) at 3% flat.

• Interest: RM100,000 × 3% × 9 years = RM27,000
• Total to repay: RM127,000
• Monthly instalment: RM127,000 ÷ 108 = RM1,175.93

The problem is that you are paying 3% a year on RM100,000 even in year eight, when you only owe a fraction of that. By the final year you are still being charged as if the whole loan were outstanding.

Flat rate vs effective rate

The effective interest rate charges interest only on what you still owe, the way a home loan works. BNM's consumer guide compares three offers on the same RM100,000, 9-year loan:

The first two rows are the same loan described two ways. The "3%" sounds cheaper than a 5% EIR offer, but it actually costs RM2,610 more in interest. Our own calculations give similar results for other common loans: a 3.5% flat rate over 7 years works out to roughly 6.4% effective, and a 2.5% flat rate over 5 years to roughly 4.7%. The longer the tenure, the wider the gap.

Enter any flat-rate quote into the Flat Rate Reveal to see its effective rate and the extra interest in ringgit. To compare it against an offer quoted as an EIR, run that offer through the Loan Repayment Calculator and compare total interest.

What changed in 2026

According to BNM's consumer guide, the Hire-Purchase (Amendment) Act 2026 took effect on 1 June 2026. The key points, as of September 2026:

• EIR and reducing balance for new agreements. Fixed-rate and variable-rate hire purchase both use the reducing balance method, and providers quote the EIR.
• A grace period to 31 March 2027. Providers have until then to upgrade their systems. BNM advises borrowers to ask each provider whether it has already switched.
• New rate caps. For fixed-rate financing, the old 10% flat-rate cap is replaced by an EIR cap of 17% p.a. for tenures up to 5 years and 16% p.a. for longer tenures. Variable-rate financing stays capped at 17% p.a. EIR.
• Existing loans are not converted. Agreements signed under the old Act keep their original terms. The Act allows you and your provider to agree to recalculate the settlement balance under the new method, subject to the provider's readiness.

If you already have a flat-rate loan

Old hire-purchase loans calculate early-settlement rebates with the Rule of 78, which assigns more of the interest to the early months. The Association of Banks in Malaysia says its members, together with the Islamic banking and development finance associations, offer goodwill discounts from 1 June 2026 to eligible customers who settle old fixed-rate loans early. The aim is to bring their balances in line with what a new-method borrower would owe.

Keep the size of this in perspective. On BNM's RM100,000 example, the Rule of 78 treats about RM14,900 of interest as earned by month 36. A reducing-balance loan at the equivalent 5.5% EIR would have charged about RM14,300 by then. That is a real difference, but a modest one. BNM's own FAQ makes a similar point: the bigger benefit goes to people who settle early.

If you are thinking of settling early, ask your bank for two figures in writing: the settlement amount under the old method, and the amount after any goodwill discount. And don't drain your safety net to do it. Having cash for a breakdown or job loss matters more than a small interest saving; see how big your emergency fund should be.

Before you sign a new car loan

1. Ask "What's the EIR?" BNM recommends comparing providers on the EIR only.
2. Shorten the tenure where you can afford to. Interest grows with every extra year, whatever the method.
3. Budget for the whole car, not the instalment. BNM's guide reminds buyers to plan for the down payment, insurance or takaful, road tax and maintenance. Buying a Car walks through the full cost.
4. Know where to complain. Unresolved disputes with a bank can go to the Financial Markets Ombudsman Service or BNMLINK. For non-bank providers, KPDN handles complaints.

For how a car loan fits with your other borrowing, see Good Debt, Bad Debt.

References

• Bank Negara Malaysia, Consumer Guide: Five Key Highlights of the Hire-Purchase (Amendment) Act 2026
• The Association of Banks in Malaysia, Banks in Malaysia Introduce Changes to Hire Purchase Financing with Early Settlement Discounts (16 March 2026)
• Attorney General's Chambers, Laws of Malaysia: Hire-Purchase Act 1967 (Act 212) and amendments, lom.agc.gov.my
• BNMLINK, bnmlink.bnm.gov.my