CPF OA and Your Home Loan: What You Can and Can't Do
CPF Ordinary Account can pay your HDB down payment, stamp duty, and monthly mortgage. But there are limits: including the Valuation Limit and Withdrawal Limit: that many buyers only discover at the lawyer's office.
Most Singaporeans know their CPF Ordinary Account (OA) can be used to buy a flat. What fewer know is the exact rules around how much you can use, and the hard ceiling that applies once you’ve been paying your mortgage for a while.
What CPF OA Can Pay For
For an HDB resale flat purchase, CPF OA can be used for:
- Down payment (the portion not from your loan)
- Buyer’s Stamp Duty (BSD)
- Legal fees (conveyancing)
- Monthly mortgage repayments (ongoing, until you hit the withdrawal limit)
It cannot be used for cash-over-valuation (COV), option fees, or renovation costs.
The Valuation Limit
The CPF Valuation Limit (VL) is the lower of the purchase price or the HDB/bank valuation of the flat.
You can only use CPF up to this limit in total. If you pay COV (cash above valuation), the extra doesn’t increase your CPF allowance.
Example: You buy a flat for $650,000. HDB values it at $620,000. Your Valuation Limit is $620,000. You can use CPF for up to $620,000 of the purchase and repayment — not $650,000.
The Withdrawal Limit
Once your total CPF withdrawals (from OA) for the property equal the Valuation Limit, you must stop using CPF for that property. All future mortgage repayments must come from cash.
This catches buyers off guard in their 10th–15th year of mortgage payments. The flat is worth more than when they bought it, but they can’t use CPF for the remaining loan, the limit is fixed at purchase.
Example: VL = $620,000. You’ve drawn $350,000 for the down payment and monthly repayments over 10 years. You have $270,000 of CPF usage remaining before you hit the ceiling.
Refund Rules When You Sell
When you sell an HDB flat, you must refund all CPF OA withdrawals (principal + accrued interest at 2.5% p.a.) before you receive any cash proceeds. The accrued interest is the opportunity cost of what your OA would have earned had the money stayed in your account.
This is the most misunderstood part of HDB financing. If you bought at $500,000 and sell at $700,000, your $200,000 gross profit may shrink significantly after the CPF refund.
Example:
- CPF withdrawn (down payment + 10 years of repayments): $280,000
- Accrued interest on withdrawals: $45,000
- Total refund to CPF OA: $325,000
- Loan outstanding at sale: $280,000
- Gross sale proceeds: $700,000
- Cash in hand = $700,000 − $325,000 (CPF refund) − $280,000 (loan repayment) = $95,000 cash
The $325,000 goes back into your CPF OA, you didn’t “lose” it, it’s your retirement money, but your liquid cash from the sale is much smaller than the headline profit suggests.
The 2.5% Accrued Interest Problem
CPF earns a guaranteed 2.5% p.a. on OA balances. When you use OA money for your flat, you forgo that 2.5%, and you must top it back up when you sell. Over 20 years on $300,000 of withdrawals, this compounds to roughly $195,000 in accrued interest.
The longer you hold the flat, the larger the accrued interest refund. This is why many Singaporeans feel “house-poor on paper”, their CPF grows alongside their flat’s value, but both assets are locked until sale or retirement.
Practical Implications
If you’re buying: Use the CPF OA/SA/MA Breakdown calculator to see how much OA you’ll accumulate by your purchase date, and the HDB Affordability Calculator to check whether your OA inflow covers monthly repayments.
If you’re selling: Factor in the CPF refund when estimating proceeds. A $200k gross gain may mean $50k–$100k actual cash, depending on your draw history.
If you’re planning retirement: The CPF refunded on sale goes into your OA — which feeds into your retirement sums at 55. Selling your flat before 55 means more in your CPF pool; selling after 55 means the refund enters OA but the Basic Retirement Sum or Full Retirement Sum rules apply.
Quick Reference
| What CPF OA can pay | Yes/No |
|---|---|
| HDB resale down payment | Yes |
| Buyer’s Stamp Duty | Yes |
| Legal/conveyancing fees | Yes |
| Monthly HDB loan repayments | Yes (until Withdrawal Limit) |
| Monthly bank loan repayments | Yes (until Withdrawal Limit) |
| Cash-over-valuation (COV) | No |
| Renovation | No |
| Property tax | No |
CPF rules are subject to change. Always verify with CPF Board (cpf.gov.sg) before your purchase. This article reflects rules as of 2026. Not financial advice.