If you grew up in Singapore, you were probably taught one financial rule above all else: pay off your debts as fast as possible. Get rid of the mortgage. Be debt-free.
It sounds responsible. It feels responsible. But in 2026, that instinct might be quietly costing you thousands of dollars every year.
Below I want to walk you through two things: why sticking with your HDB loan by default is likely a mistake right now, and why the biggest CPF errors most people make are emotional rather than mathematical.
The default option most Singaporeans never question
When you buy an HDB flat, the path of least resistance is the HDB loan at 2.6% per annum. It is government-backed, stable, and your CPF deductions happen automatically. No paperwork. No decisions. No stress.
The problem is that "no stress" comes at a cost. Home loan rates in Singapore have been falling. By Q4 2025, 3-month SORA had averaged around 1.4% to 1.5%, and most competitive bank packages were already offering rates below 2% per annum. Some packages are sitting as low as 1.4% to 1.5% today.
That means if you are still on the HDB loan at 2.6%, you could be overpaying by more than 1% per annum every single year.
Current market rates (April 2026)
As a reference point, here are indicative rates from Cashew as of 18 April 2026. Rates vary by loan quantum and are subject to change:
| Package | Year 1 | Year 2 | Year 3 | Lock-in |
|---|---|---|---|---|
| 2-Year Fixed | 1.40% | 1.40% | Board rate | 2 years |
| 3-Year Fixed | 1.55% | 1.55% | 1.55% | 3 years |
| Floating (SORA) | from 1.19% | from 1.19% | from 1.19% | None |
Indicative rates as of 18 April 2026. Actual rates subject to loan quantum, credit profile and bank approval. Verify directly with Cashew before committing.
Cashew is a home loan comparison platform that shows you real bank rates and connects you to a mortgage specialist. No commitment required to compare.
Compare Rates via Cashew →Use code honeymoneysg when you apply. Call or WhatsApp: +65 8021 7460
CPF OA and your mortgage: what actually makes sense
Let me be direct about my position here, because it differs from what most people expect: I am not against using CPF OA to service your home loan. In fact, I actively support it.
The reason is opportunity cost. Your CPF OA earns a guaranteed 2.5% per annum. Your bank loan, once refinanced, might cost 1.4% to 1.6%. Letting CPF service the mortgage and keeping your cash free to invest in equities, REITs, or other instruments outside of CPFIS is a sound strategy. Cash invested in a diversified equity portfolio has historically returned far more than 2.5% over the long run. CPF doing the mortgage work while your cash compounds in better instruments is exactly the right division of labour.
What I am against is paying down the mortgage early. Housing in Singapore is good debt: long tenure, relatively low rates, government-backed. Rushing to eliminate it by dumping extra CPF lump sums into the loan is almost always the wrong move. You are giving up capital that could compound elsewhere just to pay down a liability that is barely costing you anything.
There is also the OA-to-SA transfer worth knowing about. If you have excess CPF OA that is not needed for the mortgage and you have not hit the Full Retirement Sum (FRS), transferring it to your SA locks in a guaranteed 4% per annum instead of 2.5%. That is a meaningful jump on what is essentially risk-free money. The catch: this transfer is irreversible, so plan accordingly.
What the HDB loan actually gets right
Before you refinance, it is worth being clear-eyed about what you are giving up. The HDB loan has real advantages, and dismissing them would be intellectually dishonest.
No lock-in period. You can make partial or full capital repayments at any time without penalty. Bank loans typically lock you in for 2 to 3 years, and early repayment during that window incurs a penalty fee (usually 1.5% of the amount prepaid). If your financial situation changes, the HDB loan gives you flexibility.
No penalty if you sell early. Similarly, if you decide to sell your flat during the lock-in window of a bank loan, you pay a penalty. On the HDB loan, there is none.
Lenient on late payments. The HDB is a government institution. If you hit a rough patch and miss a payment, the process for resolution is generally more forgiving than dealing with a commercial bank. This matters more than people admit.
No interest rate risk for now. The HDB loan rate is pegged at 0.1% above the CPF OA rate and has been 2.6% for decades. Bank loan rates move with SORA and market conditions. In a rising rate environment, a floating bank package can end up costing more than 2.6% per annum. Fixed packages protect against this, but only for the lock-in window.
The case for refinancing to a bank loan
Once you are past your Minimum Occupation Period (MOP), refinancing is worth running the numbers on. Here is the logic: if bank rates are at 1.4% to 1.6% and your HDB loan is charging 2.6%, the argument for aggressively paying off that loan disappears entirely. Why rush to eliminate a debt that costs less than your CPF OA earns passively every year?
At 1.4% to 1.8%, your debt is almost certainly below Singapore's average inflation rate of roughly 2% to 3% per year. It is well below what a diversified equity portfolio historically returns over the long run. This is the logic behind refinancing: reduce the cost of debt, and create space for your capital to work harder elsewhere.
What to watch out for before refinancing
Fixed vs floating. Fixed rates lock in your interest for a set period (typically 2 to 3 years). Floating rates track SORA and can move in either direction. If you know you will not be selling within the lock-in period, a fixed rate gives predictability without rate-hike risk.
Loan quantum matters. The larger your outstanding loan, the more you save. For smaller outstanding amounts (under $200,000), the savings may not justify the effort of refinancing. Model the numbers before committing.
The process takes time. Even once you lock in a rate, refinancing takes months to complete, coordinating between the bank, a law firm, and your existing lender. You will continue paying your current rate until everything settles. Waiting too long to act carries an opportunity cost.
Repricing vs refinancing. Once you are on a bank loan, you do not have to go through full refinancing after every fixed period. You can reprice with the same bank, which is simpler and often cheaper. Full refinancing (moving to a different bank) makes sense when the rate difference justifies the additional legal fees.
This move is one-way. Once you leave the HDB loan, you cannot go back. The decision is permanent. Run the numbers carefully. If the rate gap is meaningful and your horizon is long, it usually makes sense. But do not do it on impulse or because rates look attractive today without considering the full picture.
What to do with your CPF OA instead
The strategy is straightforward: let your CPF OA handle the mortgage. That is its job. Your CPF deductions go in, the mortgage gets paid, and the OA keeps earning its 2.5% on whatever balance remains. You do not need to overthink that part.
What this frees up is your cash. Cash can go into instruments CPF cannot: individual stocks, ETFs, REITs, dividend portfolios, international equities. If your cash is sitting idle while you manually top up the mortgage, you are forgoing the return gap between what the loan costs (1.4% to 1.6%) and what a diversified portfolio can realistically earn over 10 to 20 years. That gap, compounded, is the real opportunity cost.
For CPF OA that accumulates beyond what the mortgage consumes, you have two options worth knowing:
OA-to-SA transfer. Moving excess OA to your Special Account bumps the guaranteed rate from 2.5% to 4.0%. It is irreversible, so plan before you execute. But if you have not hit the Full Retirement Sum and you have idle OA sitting around, this is a clean, risk-free upgrade on that capital.
CPFIS investing. For those who want to actively deploy OA funds in the market, CPF Investment Scheme lets you invest in approved unit trusts. The key is keeping costs low. Two platforms worth considering:
POEMS Cash Plus offers CPFIS-approved unit trusts at 0% sales charge. A straightforward way to access index funds with your OA savings, with no front-end fees eating into your returns.
Open POEMS Cash Plus →Endowus is a MAS-licensed robo-adviser offering access to institutional-class funds via CPFIS at 0% sales charge. You set the risk profile and let it run. Good option if you want professional-grade fund selection without the effort.
Try Endowus →The simple two-step strategy
If I had to distil this into the most actionable framework:
Step 1: Reduce the cost of debt. Compare your current HDB loan rate against what is available in the market. If bank rates are materially lower, refinancing is worth doing. Use a comparison platform to see real rates without being pushed into a sales call. Cashew (code honeymoneysg) is the one I recommend. Compare, then decide.
Step 2: Let CPF service the mortgage. Deploy your cash elsewhere. Once you are on a 1.4% to 1.6% bank loan, CPF OA covering the monthly instalment is exactly right. Your cash, freed from the mortgage, belongs in instruments that can compound meaningfully over 10 to 20 years: equities, REITs, index funds. Do not rush to pay down a loan that costs less than your CPF earns. Stretch it out. Let time work for you.
Lower the debt cost. Free the cash. Let compounding do the rest. That is the whole strategy.
What if you just want peace of mind?
Peace of mind is a legitimate financial consideration. If market volatility keeps you up at night, the optimal strategy on paper may not be the right strategy for you.
But here is what I would push back on: peace of mind always has a price. Staying with a 2.6% HDB loan when market rates are at 1.4% means you are paying more interest than you need to, every single month, year after year. That is not risk-free. That is a guaranteed cost.
The question to ask yourself is: is that guaranteed cost less than the discomfort of doing something different? For some people, especially those closer to retirement or with limited investment experience, the answer might genuinely be yes. That is a valid call. But you should make it consciously, with the full picture in front of you, not by default.
A note on loan tenure
When you refinance, you sometimes have the option to adjust your loan tenure. Extending it reduces your monthly instalment and improves cash flow. At a low interest rate, stretching the loan slightly while keeping capital invested can make mathematical sense, particularly if your investment returns are comfortably above your borrowing cost.
This is not right for everyone. A longer loan means more total interest paid over the life of the loan. But if you are financially disciplined, have a clear investment plan for the freed-up cash flow, and understand the trade-off, it is a lever worth knowing about.
The bottom line
The biggest financial mistakes in Singapore are rarely dramatic. They are quiet ones: sticking with the HDB loan at 2.6% because it feels familiar, rushing to pay down debt that barely costs anything, never running the numbers on what an alternative looks like.
In 2026, with bank loan rates sitting well below 2%, the gap between the default option and the optimised one is real and meaningful. You do not have to take dramatic risks to close that gap. You just have to do the math.
The right move: reduce the cost of debt by refinancing, let CPF service the mortgage, and put your cash into instruments that can genuinely compound. Housing in Singapore is good debt. Stretching the loan while your capital works harder elsewhere is not reckless. It is rational.
Safety without math is expensive. Do not let inertia make the decision for you.
This post is not sponsored. If you found it useful, support the channel for free by signing up for Interactive Brokers via my link or scanning the QR code. It costs you nothing extra, and IBKR is the broker I personally use for investing cash outside CPF.