When Bank Negara changes its interest rate (the OPR), how much does your housing loan instalment move?

The OPR is 2.75%, and a change reaches you in three links: OPR, then SBR, then your loan rate.

The OPR is set by Bank Negara's Monetary Policy Committee (MPC), which meets six times a year. The 2026 decision dates are 22 January, 5 March, 7 May, 9 July, 3 September and 5 November.

The SBR (Standardised Base Rate) is the reference rate every bank uses for new floating-rate home loans since 1 August 2022, under Bank Negara's revised Reference Rate Framework. It is linked solely to the OPR, so when the OPR moves by 0.25 points, every bank's SBR moves by 0.25 points. Today every bank's SBR is 2.75%.

Your loan rate is the SBR plus a spread written in your letter of offer. Maybank's published indicative rate for a standard housing loan, for example, is 4.00%: SBR 2.75% plus 1.25%. The spread covers the bank's costs, risk and profit and normally stays put for the life of the loan; only the SBR part moves. Loans signed before August 2022 are priced off the older Base Rate (BR) or Base Lending Rate (BLR), and Bank Negara's framework says these move exactly in tandem with the SBR, so older borrowers feel the same change.

How fast? Days, not months. Bank Negara cut the OPR on 9 July 2025; Maybank announced the same day that its rates would fall by 0.25 points from 11 July 2025. Your bank then tells you the new instalment by letter, app or SMS. If your home is still under construction, the change shows up in the progressive interest on the amount already released.

Every OPR change since 2020, from Bank Negara's table of decisions, with what each level means for a RM500,000 loan over 35 years priced at OPR plus 1.25%:

Read the instalment column from top to bottom: between mid-2020 and mid-2023 the same loan went from RM1,924 to RM2,289 a month, RM365 more, without the borrower doing anything. That is the size of swing a 35-year loan has to survive.

Usually the instalment, and the rule for your loan is in the letter of offer. A bank has two levers when the rate moves: keep the tenure (the number of years) and change the monthly payment, or keep the payment and change the tenure.

After a cut, some banks lower the instalment and others keep it and shorten the loan, which saves you more interest. On the RM500,000 example, staying at RM2,214 a month after a 0.25-point cut clears the loan in about 392 months instead of 420, roughly 2.3 years sooner. If you would rather have the cash each month, you can ask the bank for the lower instalment.

After a rise, the instalment goes up for most borrowers, because the usual maximum tenure is 35 years or until age 70, whichever comes first (the limit RHB and Alliance Bank publish, checked 5 October 2026), and most new loans already sit at it. If the new figure hurts, the two tools are a lump-sum payment into the loan, which can come from your EPF Akaun Sejahtera (the former Account 2; see using EPF to reduce a housing loan), and refinancing, which has its own costs and may fall inside your lock-in period (see lock-in and refinancing).

The size of the move matters more than the headline. For a 35-year loan starting at 4.00%:

Before you buy, work out the instalment at your quoted rate plus one full point and check two things: that it still fits your monthly budget, and that your DSR (debt service ratio: all your monthly loan repayments divided by your income) stays under the bank's ceiling, generally about 60%. The ready-made tables are in home loan monthly instalment 2026 and the test itself in our DSR guide.

Yes, but you pay for the certainty up front. Almost all Malaysian home loans are floating; fixed-rate loans are rare and come mainly from insurers.

The fixed loan costs RM306 more a month from day one, so the OPR would have to rise about a full point, to roughly 3.75%, and stay there before the fixed rate comes out ahead. For reference, the OPR's highest level since 2020 is 3.00%. The same listing shows a 5-year lock-in on the fixed packages with a penalty of up to 3.5% of the outstanding balance for settling early, so it is also harder to leave.

Islamic financing has a built-in cap. Home financing under Commodity Murabahah is floating too, but the contract states a ceiling profit rate: Alliance Bank's page puts it as the profit rate being capped at the ceiling profit rate, so you know your maximum payment. You still benefit from cuts. The ceiling differs by bank and is printed in the offer, so read how far it sits above the rate you start on.

Whichever type you take, the spread over SBR is the part that differs between banks, and a lower spread helps you at every OPR level for the whole tenure. Compare letters of offer from two or three banks before you sign.