Answer
CPF Accrued Interest Refund Explained
The hidden cost that shrinks your sale proceeds — and catches most sellers off guard.
Answer: When you sell a property bought with CPF, you must refund to your CPF OA: (1) all CPF principal used (down payment + monthly mortgage payments from CPF) + (2) accrued interest at 2.5% p.a. compounded on each withdrawal. For a couple who used $200K in CPF over 10 years, the accrued interest alone is roughly $50K-$60K. After 15 years, it grows to $80K-$90K. This refund is deducted from your sale proceeds by your lawyer — it goes back to your CPF OA, not your bank account.
How CPF Accrued Interest Is Calculated
Every time you withdraw CPF for your property (down payment, monthly mortgage, stamp duty), that amount starts accruing interest at 2.5% per year, compounded. The formula:
Accrued Interest = Sum of [Each CPF withdrawal x (1.025)^(years since withdrawal) - withdrawal amount]
In simpler terms: each CPF dollar you used grows at 2.5% p.a. from the date you withdrew it. Your down payment (withdrawn on day 1) accrues the most interest. Your last monthly payment (withdrawn just before selling) accrues almost none.
Worked Example: $500K HDB, 10-Year Hold
| CPF Usage | Amount | Accrued Interest (10 yrs) |
|---|---|---|
| Down payment (CPF, day 1) | $100,000 | $28,008 |
| Monthly mortgage from CPF (10 yrs) | $96,000 | ~$13,500 |
| Stamp duty from CPF | $9,600 | $2,689 |
| Total CPF used | $205,600 | ~$44,197 |
| Total refund to CPF OA | $249,797 | |
Monthly CPF mortgage accrued interest is lower because each payment has progressively less time to compound. The down payment, withdrawn upfront, generates the most accrued interest.
Accrued Interest by Holding Period
Approximate accrued interest on a $100K lump-sum CPF withdrawal (e.g., down payment):
| Years Held | CPF Used | Accrued Interest | Total Refund |
|---|---|---|---|
| 5 years | $100,000 | $13,141 | $113,141 |
| 10 years | $100,000 | $28,008 | $128,008 |
| 15 years | $100,000 | $44,830 | $144,830 |
| 20 years | $100,000 | $63,862 | $163,862 |
| 25 years | $100,000 | $85,394 | $185,394 |
At 2.5% compounding, CPF doubles in ~28 years. A 25-year holder refunds almost double the original CPF used. This is why accrued interest is the single biggest factor in your net sale proceeds.
Impact on Your Sale Proceeds
Here's how CPF refund (principal + accrued interest) eats into your cash from selling:
| Item | Amount |
|---|---|
| Sale price | $650,000 |
| Outstanding loan | -$180,000 |
| CPF principal refund | -$205,600 |
| CPF accrued interest refund | -$44,197 |
| Agent commission (2%) | -$13,000 |
| Legal fees | -$2,500 |
| Cash in hand | $204,703 |
Without accrued interest, you'd have $248,900 cash. The $44K accrued interest goes back to your CPF OA — it's not lost, but it's not spendable cash. It can be used for your next property purchase.
Key Rules to Know
- →Refund is capped at sale proceeds. If your sale proceeds (after loan repayment) are less than your CPF refund, you only refund what's available. No out-of-pocket payment required.
- →Refund goes to CPF OA, not your bank. The money re-enters your CPF Ordinary Account. You can use it again for your next property purchase, but not for cash spending.
- →Interest accrues even after your loan is fully paid. If you paid off your mortgage in Year 10 but sell in Year 20, accrued interest keeps compounding on all CPF used for those extra 10 years.
- →Both owners' CPF refunds apply. For joint buyers, each person's CPF usage + accrued interest is calculated separately and refunded to their respective CPF OA.
- →120% Valuation Limit still applies. Total CPF withdrawals (principal + accrued interest) for a property cannot exceed 120% of the lower of purchase price or valuation. Beyond this, you must use cash.
Calculate Your Exact CPF Refund
Plug in your CPF usage and holding period to see how much goes back to CPF when you sell.
Calculate Your NumbersFAQ
What is CPF accrued interest?
CPF accrued interest is the interest you would have earned if the CPF money you used for your property had stayed in your Ordinary Account (OA) at 2.5% p.a. When you sell the property, you must refund the principal (CPF used) PLUS the accrued interest back to your CPF OA. This protects your retirement savings.
Why do I have to refund interest I didn't actually earn?
CPF money is meant for retirement. When you withdraw it for housing, you lose the compound interest it would have earned in your OA (2.5% p.a.). The accrued interest refund ensures your retirement fund is made whole — as if you never withdrew the CPF. Think of it as the opportunity cost of using CPF for property.
When do I need to refund CPF accrued interest?
You refund when you sell the property, transfer ownership, or when the property is compulsorily acquired. The refund is automatic — your lawyer deducts it from sale proceeds and sends it directly to CPF Board. You don't write a cheque. If sale proceeds are insufficient, you only refund what's available (no out-of-pocket payment).
Does CPF accrued interest affect how much cash I walk away with?
Yes, significantly. After 10 years, a couple who used $200K CPF total will owe ~$56K in accrued interest. That $56K comes out of your sale proceeds before you see any cash. After 15 years, the same $200K becomes ~$89K in accrued interest. This is often the biggest surprise for HDB sellers.
Can I reduce my CPF accrued interest?
You can't reduce what's already accrued, but you can slow future accrual by: (1) making voluntary CPF OA top-ups to reduce the principal that accrues interest, (2) making lump-sum repayments to your CPF (housing refund), or (3) switching to cash payments for your mortgage sooner. The earlier you act, the more you save — compound interest works against you over time.
Related
Last updated Feb 2026. CPF accrued interest is calculated at 2.5% p.a. compounded. Figures are estimates based on typical scenarios. Check your actual CPF usage via the CPF website (my cpfr → My Property Dashboard). This is not financial advice.