Nexus Mortgage SG  ·  April 2026  ·  5-minute read  ·  CPF & Home Financing

CPF Home Loan Singapore: Using Your OA for HDB and Private Property in 2026

Your CPF Ordinary Account is the single biggest funding source most Singapore home buyers have. It can pay up to 100% of an HDB concessionary loan, or up to 20% of a 25% bank-loan downpayment on a condo. But four hard limits decide how far it stretches — and accrued interest at 2.5% p.a. follows you all the way to the sale.

What CPF OA Can Pay For: HDB vs Bank Loan

The rules differ between an HDB flat on an HDB concessionary loan and any property (HDB or private) on a bank loan. Get this split right before you sign anything.

HDB flat on HDB concessionary loan (2.6% p.a. in April 2026):

• Downpayment: up to 20% of purchase price, fully payable from CPF OA. No 5% cash minimum.
• Monthly instalments: deductible from OA in full each month.
• Buyer's Stamp Duty (BSD): payable from OA.
• No Withdrawal Limit cap, as long as the lease covers the youngest buyer to age 95.

HDB flat or private condo on a bank loan (from 1.40% p.a. fixed; 1.65%–1.85% on 3M SORA):

• Downpayment: 25% of purchase price for first property. The first 5% must be cash. The next 20% can come from CPF OA.
• Monthly instalments: deductible from OA, or paid in cash — you choose at loan acceptance.
• BSD: payable from OA.
• ABSD cannot be paid from CPF. Cash only. A Singapore Citizen buying a second property at S$2M now faces S$400,000 ABSD in cash.

If you are weighing the loan side of this choice, our breakdown of the HDB loan vs bank loan covers the rate, lock-in, and CPF cashflow trade-offs. First-timers should also read the first-time HDB buyer guide for the full purchase sequence.

The Four CPF Limits Every Buyer Should Know

Four constraints decide how much CPF OA you can actually pour into a property. Miss one and you end up topping up in cash mid-loan.

1. Your OA Balance

The simplest limit is what is in your OA today. The first S$20,000 in OA earns an extra 1% (so 3.5% p.a. on that slice) and many buyers leave that S$20K untouched as a buffer. CPF contribution rates step down past age 55, so your OA growth slows when you most need a buffer for retirement. Plan accordingly.

2. The Valuation Limit (VL)

The VL is the lower of the purchase price or the bank/HDB valuation. It is the base figure for the Withdrawal Limit and the line at which "use OA freely" starts to require additional rules.

3. The Withdrawal Limit (WL) — Private Property Only

For private property bought on a bank loan, total CPF used (principal plus accrued interest) is capped at 120% of the VL. Once you hit this cap, every cent of the remaining loan must come from cash.

For a S$1.5M condo, the 120% Withdrawal Limit caps lifetime CPF use at S$1.8M (principal + accrued interest combined). HDB flats have no equivalent ceiling.

HDB flats financed by an HDB loan have no Withdrawal Limit. HDB flats financed by a bank loan do, and the same 120% rule applies.

4. The Basic Retirement Sum (BRS) for a Second Property

If you already own one property and are buying a second, you must keep the Basic Retirement Sum across your OA and SA before further OA can be tapped. The 2026 BRS is S$106,500. Members aged 55 and above must keep the Full Retirement Sum (S$213,000 in 2026) in the Retirement Account instead. The BRS rule does not apply to your first property.

Accrued Interest: The Number That Surprises Most Sellers

Every dollar of CPF OA used for property accrues interest at 2.5% p.a., compounded — the same rate your OA would have earned. When you sell, you must return the principal plus accrued interest to your CPF account. The money goes back to you, not to the government, but it leaves the sale in cash form.

S$300,000 of CPF used at the start of a 25-year loan accrues over S$200,000 in interest. The cash you walk away with at sale shrinks by exactly that figure.

The practical impact: your property must appreciate faster than 2.5% p.a. (plus stamp duty and legal costs) just for you to break even on cash extracted at sale. Many HDB sellers hit "negative cash sale" — they refund CPF in full and walk away with nothing in hand — even though their CPF balance has grown.

OA for Monthly Instalments vs Paying in Cash

Most buyers default to OA deduction because it preserves cash. That feels right. But the maths is not always one-sided.

Your OA earns 2.5% p.a. tax-free. A typical bank mortgage in April 2026 costs 1.45%–1.85% p.a. (see current home loan rates). If you can comfortably service the mortgage in cash, leaving OA invested at 2.5% earns you roughly 0.6%–1.0% p.a. on every dollar you do not withdraw — and you avoid the accrued interest debt entirely.

The trade-off is real but personal. Cash repayment makes sense when: you have surplus liquidity, you are well below 55 with strong CPF growth, or you intend to stay in the property long term. OA repayment makes sense when: cashflow is tight, you are pre-funding renovation or other near-term costs, or your loan is small enough that accrued interest never matters.

Worked Examples: HDB and Private Condo

Example A — S$700,000 HDB Resale, HDB Loan

Couple, both 35, combined OA balance S$220,000. They take the HDB concessionary loan at 2.6% p.a. The 20% downpayment is S$140,000, fully paid from OA. BSD (~S$15,600) also paid from OA. Monthly instalment of about S$2,250 deducts from OA each month. They keep S$20K in each OA earning the 3.5% extra-interest tier. No Withdrawal Limit applies. CPF accrued interest still compounds at 2.5% on every dollar used.

Example B — S$1,000,000 Condo, Bank Loan

Single buyer, age 38, OA balance S$280,000. Bank loan at 1.45% fixed for 3 years, 75% LTV. The 25% downpayment is S$250,000: S$50,000 must be cash (5%); S$200,000 can come from OA (20%). BSD (~S$24,600) payable from OA. Monthly instalment of about S$2,975 deducts from OA. Withdrawal Limit is S$1.2M (120% of S$1M). Over a 30-year tenure, the cap is unlikely to bind, but the buyer should run the numbers against the TDSR/MSR affordability calculator and confirm qualifying loan size against the MAS 4% stress test floor.

Decoupling, Second Properties, and the BRS Rule

Couples buying a second property by decoupling — one spouse buys out the other's share — trip on the BRS rule most often. The buying spouse must keep the BRS (S$106,500 in 2026) across OA and SA before any OA can be applied to the new property. Run this check before paying the buy-out, not after. The same applies to first-time second-property buyers using OA: keep the BRS, then withdraw.

If you are eyeing the equity / cash-out loan route on an existing property to fund a second purchase, layer the BRS rule on top of TDSR. Read our TDSR for private property guide for the qualifying-income side and the best loan for condo page for current bank packages.

HDB Housing Grants and CPF

First-timer HDB buyers may qualify for the CPF Housing Grant, Enhanced Housing Grant, or Proximity Housing Grant. Grants land in your CPF OA, then flow into the property purchase — meaning grant amounts also accrue 2.5% interest and must be refunded to CPF on sale. See the HDB grant page for current eligibility ceilings. Private properties do not qualify for any of these grants.

Refinancing and Selling: CPF Continuity

When you refinance from one bank to another, OA deductions continue without interruption. There is no need to "restart" the CPF housing arrangement — the new bank takes over the deduction mandate. Compare the savings using the refinance savings calculator and time the move using when to refinance.

On sale, CPF refund is calculated on completion day: principal used + accrued interest at 2.5% compounded. The conveyancing lawyer routes the refund directly from the sale proceeds. If you have used OA aggressively and prices have moved sideways, expect a small or zero cash cheque at the table.

Plan CPF and Mortgage Together, Not in Isolation

The CPF angle decides how much cash you keep at completion, how much liquidity you have for the next 25 years, and how much cash you walk away with at sale. The loan angle — rate, lock-in, repricing — decides your monthly cost. Most buyers optimise one and forget the other. Run both at the same time before you sign the Option to Purchase. For a printable version of this dual-track plan, download the Singapore Mortgage Free Report — includes a CPF withdrawal worksheet and accrued-interest tracker.

Further Reading

• Singapore Mortgage Free Report — Dan's full CPF + mortgage planning guide with worked HDB and condo examples in one downloadable PDF
• HDB Loan vs Bank Loan — rate, lock-in, and CPF treatment compared side by side
• First-Time HDB Buyer Guide — HFE letter, OTP, downpayment timing, and CPF use through each step
• TDSR for Private Property — how qualifying income and existing debts cap your loan
• MAS 4% Stress Test — the floor rate that determines your maximum loan size
• When to Refinance — CPF continuity and cost savings across a switch
• CPF Board: Using Your CPF to Buy a Home — official housing withdrawal rules and eligibility
• IRAS: ABSD — ABSD rates and confirmation that ABSD is cash-only

General information only, not financial advice. CPF rules, Withdrawal Limits, and Retirement Sum figures change. Numbers reflect April 2026. Official references: CPF Board and IRAS ABSD.