HDB loan vs bank loan is partly a question about your CPF. With an HDB loan, you must use your Ordinary Account (OA) savings for the flat first, though each buyer can keep up to S$20,000. With a bank loan, you choose how much CPF to use and can keep all of it.
The interest rate matters, but so does what is left in your OA the day after you collect your keys. Here is how the two loans compare, and what the $20,000 choice really involves.
HDB Loan vs Bank Loan at a Glance
| HDB loan | Bank loan | |
|---|---|---|
| Interest rate | 2.6% a year in Q4 2026, set at 0.1 point above the OA rate | Floating or fixed for a period, set by each bank |
| Maximum loan | 75% of the price, or of the lower of price and valuation for resale | 75% of the lower of price and bank valuation |
| Downpayment | 25%, in CPF, cash or both | 25%, with at least 5% in cash |
| Longest tenure | 25 years | 30 years for HDB flats |
| Your OA savings | Must be used first. Each buyer may keep up to $20,000 | You decide. You can keep any amount |
| Early repayment | No lock-in, no penalty | Often a lock-in of one to three years |
| Income ceiling | $16,000 a month for families, $8,000 for singles | None for the loan itself |
| Switching later | Can refinance to a bank | Cannot move to an HDB loan |
The figures come from CPF Board and HDB’s loan guide. The income ceilings are the revised figures HDB announced in August 2026, up from $14,000 and $7,000. An HDB loan also requires at least one applicant to be a Singapore Citizen.
CPF Board notes that a bank’s early repayment penalty is typically around 1.5% of the outstanding loan. Bank rates change often, so compare current packages directly with the banks.
The $20,000 You Can Keep in Your OA
HDB’s rule is that you must use your CPF savings for the purchase before the loan is granted. The exception is that each flat buyer may retain up to $20,000 in the OA.
A couple can therefore keep up to $40,000 between them. Everything above that goes to the flat, and the HDB loan covers what remains, up to the loan limit.
This is a choice, not a default you must accept. You can keep $20,000, keep less, or use the whole OA balance.
With a bank loan the rule does not arise. You may leave any amount in your OA and pay more in cash instead.
Wiping Out the OA vs Keeping the Buffer
Take an illustrative couple, both 30, each with $60,000 in the OA. They are buying a $500,000 flat with an HDB loan.
If they use everything, $120,000 of CPF goes in and they borrow $380,000. The loan limit is $375,000, so $5,000 more comes from cash.
If each keeps $20,000, $80,000 of CPF goes in. They would need to borrow $420,000, which is above the $375,000 limit. The $45,000 gap must come from cash.
So the first point is practical. Keeping the buffer only works if the loan limit, or your cash, can cover the difference.
Now take a smaller gap. Suppose keeping $40,000 simply means a loan that is $40,000 larger, at 2.6% over 25 years.
- The monthly instalment rises by about $181.
- Total interest on that extra $40,000 is about $14,400 over the 25 years.
- In the first year, the extra loan interest is about $1,040.
- In the same year, $40,000 in two OAs earns $1,000 at 2.5%. If the balances fall within the first $60,000 of each person’s combined CPF savings, they also earn 1% extra interest, about $400. Extra interest on OA savings is credited to the Special Account.
On interest alone, the two paths are close. The loan costs 2.6% and the OA earns 2.5%, or up to 3.5% with the extra interest.
This is an illustration only, not a guarantee. It assumes constant rates. The OA rate and the HDB rate are both reviewed quarterly. Our guide to how CPF interest works has the detail.
What the Buffer Is Really For
The stronger reason to keep money in the OA is safety, not return.
It can pay the instalments if income stops. If the couple above pay $1,700 a month from CPF, $40,000 covers about 23 months of instalments without any new contributions.
It keeps options open. OA savings can later be used for the home, for approved investments above $20,000 or for a child’s tertiary fees.
It compounds for retirement. Money left in CPF keeps earning interest. Money put into the flat earns nothing until you sell.
The case for using everything is also real.
A smaller loan is a smaller commitment. Lower instalments leave more room in a tight monthly budget.
You pay less interest to HDB. The interest you pay on a loan leaves your household. Interest in the OA stays with you.
You have other buffers. A household with ample cash savings may not need a second one inside CPF.
The short version: An HDB loan makes you use your OA first but lets each buyer keep $20,000. On interest the choice is close. The buffer’s real value is that it can keep paying the loan if your income stops.
Other Trade-Offs Between the Two Loans
Rate certainty. The HDB rate has moved only with the OA rate. A bank rate can be lower or higher than 2.6% over time, and it resets when a fixed period ends.
Cash needed upfront. A bank loan needs 5% of the price in cash. An HDB loan’s downpayment can come entirely from CPF.
Limits on CPF use. CPF Board says bank loans carry more constraints on CPF. With a bank loan, CPF use stops at 120% of the Valuation Limit. See how much CPF you can use for housing.
The one-way door. You can move from HDB to a bank, but not back. Starting with an HDB loan keeps both routes open.
Accrued interest. Whichever loan you choose, CPF used for the home must be returned with interest when you sell. More CPF in the flat means a larger refund to your own account and less cash at sale.
What To Do Next
- Check your HDB Flat Eligibility letter for the loan amount HDB will offer, and ask banks for an in-principle approval to compare.
- Work out the instalment both ways with our mortgage repayment calculator: once with the full OA used, once with $20,000 kept by each buyer.
- Count how many months of instalments your retained OA and cash savings would cover.
- Test the purchase price against your income with the home affordability calculator.
