When buying a property, most Singaporeans use a combination of cash and CPF Ordinary Account funds for the downpayment and ongoing mortgage repayments. The question of which to use first — and in what proportion — is not purely a matter of convenience. It has long-term financial consequences that are worth thinking through deliberately.
The Case For Maximising CPF Usage
Using CPF first preserves your cash — which is more liquid and flexible than CPF, which is locked in the property until sale. Cash can be deployed for emergencies, investment opportunities, or discretionary spending; CPF in a property cannot. For families who value liquidity and flexibility, maximising CPF usage while maintaining a strong cash buffer makes intuitive sense.
The Case For Preserving CPF
CPF OA earns 2.5% per annum guaranteed — 3.5% on the first $20,000 — with no downside risk and no tax. Cash in a standard savings account earns far less. From a pure return perspective, preserving CPF to earn its guaranteed rate and using cash for the property could be argued as financially superior, provided the mortgage interest rate is below what CPF earns — which in some rate environments it is.
Additionally, CPF in your account at retirement is what funds your CPF LIFE annuity. Every dollar used on property is a dollar not accumulating toward that retirement income. For buyers who are older or closer to retirement, this tradeoff takes on greater significance.
The Accrued Interest Consideration
There is an important nuance: every dollar of CPF withdrawn for property usage accumulates accrued interest that must be refunded at sale. So using CPF isn't "free" — it comes with an obligation to return it with interest when you eventually sell. This means the effective cost of CPF usage for property is the accrued interest at 2.5% compounded, even if it doesn't feel like a cash outflow in the present.
The Practical Balance
Most buyers end up using both — CPF to fund as much of the downpayment and monthly repayments as eligibility allows, while keeping enough cash for the mandatory cash components (minimum 5% of purchase price), BSD, legal fees, renovation and a meaningful buffer. The right balance depends on your total CPF balance, your cash reserves, your proximity to retirement, and your mortgage rate. A proper financial roadmap will make this explicit before you commit to a purchase.