CPF Ordinary Account (OA): Interest Rate, Uses & Limits
The CPF Ordinary Account (OA) is a Central Provident Fund sub-account used for housing, education, insurance, and investments. It earns 2.5% interest per year, with an extra 1% on the first S$20,000.
This article is for informational purposes only and does not constitute financial advice. Always consult a licensed financial adviser before making investment decisions.
What Is the CPF Ordinary Account?
The CPF Ordinary Account (OA) is one of three core sub-accounts within Singapore’s Central Provident Fund system, alongside the Special Account (SA) and MediSave Account (MA). It is the most versatile of the three, designed to serve multiple financial needs across a Singaporean’s working life.
Contributions flow into the OA from both employees and employers based on a fixed schedule set by the CPF Board. For a Singaporean employee aged below 35, the OA receives 23% of wages out of the combined 37% CPF contribution rate (as at Q1 2026). The allocation to OA decreases as members age, with a larger share redirected to SA and MA to build retirement savings.
The OA is unique in that it earns the lowest base interest rate (2.5% per annum) among the three accounts, but it remains the account most commonly tapped for major financial milestones — primarily housing and investments.
CPF OA Interest Rate: 2.5% + Extra 1%
The CPF Ordinary Account earns a guaranteed base interest rate of 2.5% per annum, set by the CPF Board and backed by the Singapore government. This is pegged to the 3-month average of major local banks’ savings rates, with a floor of 2.5% — meaning it does not drop even when bank rates fall.
Additionally, CPF members receive an extra 1% interest per annum on the first S$20,000 in their OA (as part of the combined S$60,000 across OA and SA). This extra 1% is paid quarterly by the government as a top-up to your CPF accounts.
For younger members, maximising the OA balance up to S$20,000 before deploying funds for housing or investments can be worthwhile — S$20,000 at 3.5% effective rate for 5 years compounds meaningfully compared to a standard savings account at 0.1–1.0%.
| Account | Base Rate | Extra 1% applies on |
|---|---|---|
| Ordinary Account (OA) | 2.5% p.a. | First S$20,000 |
| Special Account (SA) | 4.0% p.a. | First S$40,000 (combined OA+SA cap S$60,000) |
| MediSave Account (MA) | 4.0% p.a. | Yes, within limits |
What Can You Use Your CPF OA For?
The CPF Ordinary Account is approved for several key uses:
1. Housing (HDB and Private Property)
This is the most common use. You can use OA savings for the downpayment, monthly mortgage instalments, and stamp duty on HDB flats and private properties. Note that if you sell your property, you must refund the OA funds used plus accrued interest.
2. Investments via CPFIS-OA
Under the CPF Investment Scheme – Ordinary Account (CPFIS-OA), you may invest your OA balance (above S$20,000) in approved products including Singapore Savings Bonds (SSBs), selected unit trusts, S-REITs listed on SGX, and gold ETFs. Only funds above S$20,000 are investable — the first S$20,000 must remain in the OA.
3. Education
CPF OA funds can pay for your own or your children’s approved tertiary education in Singapore.
4. Life Insurance Premiums
Certain MAS-approved insurance plans may be paid using OA balances.
5. Transfer to Special Account
You can make a one-way, irrevocable transfer from OA to SA (up to the prevailing Full Retirement Sum), which earns the higher 4% SA interest rate — a strategy favoured by those who prioritise long-term retirement accumulation.
CPF OA Contribution Rates by Age
The split between OA, SA, and MA depends on your age. Below is the CPF contribution allocation as at Q1 2026 for Singapore Citizens and Permanent Residents (employee contribution of 20% + employer contribution of 17%, total 37% for employees under 55):
| Age Group | Total Rate | OA allocation | SA allocation | MA allocation |
|---|---|---|---|---|
| Below 35 | 37% | 23% | 6% | 8% |
| 35 to 45 | 37% | 21% | 7% | 9% |
| 45 to 50 | 37% | 19% | 8% | 10% |
| 50 to 55 | 37% | 15% | 11.5% | 10.5% |
At age 55, any OA and SA savings above the Full Retirement Sum (S$213,000 as at 2026) can be withdrawn in cash. The remaining amount is transferred to the Retirement Account (RA) to fund CPF LIFE payouts from age 65.
CPF OA Strategy: When to Invest vs Keep in OA
Whether to invest OA funds or leave them earning 2.5–3.5% is one of the most common CPF questions among Singapore investors. Here is a practical framework:
Keep in OA if:
- You plan to use the funds for housing within 5 years (refund obligation makes early withdrawal costly)
- Your investment alternatives earn less than 2.5% risk-free (unlikely but worth checking)
- You have less than S$20,000 in OA (funds below this threshold cannot be invested anyway)
Consider CPFIS-OA investing if:
- You have a long time horizon (10+ years) and can tolerate market volatility
- You want exposure to diversified ETFs (e.g. a global equity ETF or the STI ETF)
- You understand that any investment gains must net more than 2.5% p.a. after fees to beat OA’s guaranteed return
Many financial planners in Singapore argue that the OA’s risk-free 2.5% (or 3.5% on first S$20,000) is better than most bond fund alternatives — so equity ETFs are the most justifiable CPFIS-OA investment given their long-run premium over the 2.5% hurdle rate.