The first S$20,000 in OA stays out of CPFIS
Wei has S$30,000 in his CPF Ordinary Account (OA) and wants to invest it. The CPF Board says S$20,000 must remain in OA for CPFIS purposes, so his maximum initial CPFIS-OA amount is S$10,000, before any product-specific stock or gold limit. Investing the full S$30,000 is not an available choice. If he leaves the investible S$10,000 in OA for a year at the current 2.5% base rate, it earns about S$250 under a simple full-year illustration. That is the baseline a proposed investment must beat after fees, and it is not a forecast of an equity product.
The CPF Board’s CPFIS eligibility page also requires an eligible member to be at least 18, not an undischarged bankrupt, and to complete the Self-Awareness Questionnaire if they are a new investor. The board does not guarantee CPFIS investment returns. A product can lose principal even though money left with CPF earns government-set interest. Start from investible balance and risk, not from a chart showing a high projected stock-market return.
OA and SA have different protected floors
CPFIS has an OA route and an SA route. OA investments require leaving the first S$20,000 in OA. SA investments require leaving the first S$40,000 in SA. These are account-specific thresholds: having S$50,000 in OA does not let you use the first S$40,000 in SA, and vice versa. The CPF Board’s threshold FAQ explains that the protected balances support extra CPF interest. The OA investment route also has 35% stock and 10% gold limits based on its investible-savings formula; “S$10,000 available” does not mean any product may absorb all of it.
| Example balance | Protected amount | Initial amount above the CPFIS floor |
|---|---|---|
| OA S$30,000 | OA S$20,000 | OA S$10,000 |
| SA S$35,000 | SA S$40,000 | SA S$0 |
| SA S$55,000 | SA S$40,000 | SA S$15,000, if the member still has an SA |
CPFIS thresholds in two example accounts
The last condition matters in 2026. The CPF Board says SA accounts for members aged 55 or older closed in January 2025. Their balance was directed to the Retirement Account up to the relevant sum and the remainder to OA. A 60-year-old cannot simply apply the SA-above-S$40,000 example as though an SA still sits unchanged. Check the current CPF dashboard for actual account balances and available investment amount.
Compare a real investment with the interest you surrender
For the quarter covering September 2026, the CPF Board lists an OA base interest floor of 2.5% and an SA/RA/MediSave floor of 4%. Eligible members can receive extra interest on protected combined balances; for a member below 55, the extra 1% applies to the first S$60,000 of combined CPF balances, subject to a S$20,000 OA portion. The Board’s interest explanation and extra-interest FAQ describe those rules. Wei’s invested OA S$10,000 is above the first S$20,000 OA protected amount, so the basic 2.5% benchmark is the relevant simple comparison in this example.
Suppose an approved investment earns 4% in one year before fees on S$10,000 and total charges for the example are S$40. Its illustrative gain would be S$400 − S$40 = S$360, or S$110 more than the S$250 OA-interest baseline. If the same product instead loses 5% before fees, its one-year result is −S$500 − S$40 = −S$540, a S$790 shortfall versus leaving the money in OA. These are paired scenarios, not probabilities or quoted product returns.
One-year S$10,000 OA-versus-investment illustration
The CPF Board’s 2026 CPFIS guide lists transaction charges, platform fees and product-specific terms to examine. A one-year gain greater than S$250 does not prove a long-term strategy is suitable; housing use, retirement horizon and ability to absorb losses matter. If CPFIS-OA investment sale proceeds sit in an investment account and you do not plan to reinvest, check the process for returning them to OA so they can resume earning CPF interest.
The S$8,000 wage ceiling is a different number
From 1 January 2026, the CPF ordinary wage ceiling is S$8,000 per month. It caps the ordinary wages subject to CPF contributions, not the amount you can invest through CPFIS. The CPF Board’s 2026 change notice keeps the annual wage ceiling at S$102,000. Do not insert S$8,000 into an investment-eligibility calculation. First check what was contributed to OA, SA, MA or RA, then apply the CPFIS floor to the actual relevant balance.
The Supplementary Retirement Scheme (SRS) is also separate. The tax authority lists annual SRS contribution limits of S$15,300 for Singapore citizens/permanent residents and S$35,700 for eligible foreigners, subject to tax-relief limits and rules. SRS deposits do not raise OA’s CPFIS investible balance. SRS withdrawals have their own prescribed-retirement-age and tax treatment. Treating CPF OA, SA and SRS as one pot leads to incorrect account, risk and withdrawal conclusions.
The useful next step is a three-number check
Write down your actual OA or SA balance, the protected CPFIS floor, and the interest rate that balance would earn if left with CPF. Only the amount above the floor is a candidate for an approved investment, and some products have tighter limits. Then ask the proposed provider for every fee and the risk disclosure. A S$30,000 OA statement makes Wei’s simple investible amount S$10,000; it does not tell him a share fund will beat CPF’s S$250 interest on that amount this year.
The S$250 figure deliberately treats S$10,000 as untouched in OA for a full year at a constant 2.5% base rate. Real accounts receive and spend money during the year, and the CPF Board says interest is computed monthly and credited annually. A contribution received this month starts earning interest from the next month. Thus a partial-year comparison should use the actual month-by-month balance, not divide a projected annual investment return by twelve without checking when the money entered or left OA. A product’s quoted return may also exclude trading charges or reflect an entirely different risk period.
If Wei expects to use OA savings for a home purchase soon, the relevant investment horizon may be short even if he is decades from retirement. A sudden market fall just before the down payment could be more damaging than a modest chance of beating 2.5% interest. Current CPFIS products and the risk-free CPF interest remain the concrete choices to compare today.
