CPF · Article 2 of 4
What is CPF? Everything Singaporeans Need to Know
By Isaac Lim
·
10 min read
CPF — the Central Provident Fund — is one of the most powerful financial tools available to Singaporeans. Yet most treat it as a black box: money goes in, and hopefully something comes out at 55 or 65. This guide covers everything: how each account works, contribution rates, housing implications, retirement planning, voluntary top-ups, CPF LIFE, and the decisions that can make a six-figure difference to your retirement.
What You'll Learn
✓ How CPF works — OA, SA, MA explained simply
✓ Contribution rates by age and how allocation shifts over time
✓ The hidden cost of using CPF for housing (accrued interest)
✓ Retirement sums, voluntary top-ups, and CPF LIFE options
✓ The 6 CPF decisions that can make a six-figure difference
37%
of your salary goes into CPF — 20% from you, 17% from your employer¹
What Is CPF and Why Does It Exist?
CPF is a mandatory social security savings scheme for Singapore Citizens and Permanent Residents. It was established in 1955 as a simple retirement savings tool and has evolved into a comprehensive system covering retirement, housing, healthcare, and family protection.
The core philosophy: Singapore does not rely on a pay-as-you-go pension system (where working people fund retirees). Instead, every working person saves for their own retirement — with the government providing structure, regulation, and guaranteed interest rates. This makes CPF both an individual savings instrument and a systemic retirement planning framework.
For most Singaporeans, CPF will be the single largest source of retirement wealth — often exceeding the value of property, savings, and investments combined. Understanding it deeply is not optional.
CPF Contribution Rates: The Full Picture
CPF contributions are mandatory for all Singapore Citizens and PRs employed in Singapore. Both employer and employee contribute, with total rates of up to 37% for those under 55. The ordinary wage (OW) ceiling was raised to $7,400 per month in September 2023, with plans to increase further. Additional wages (bonuses, commissions) have a separate annual ceiling.
Contribution Rates by Age Band (2025)
Age
Employee
Employer
Total
Under 55
20%
17%
37%
55–60
15%
14.5%
29.5%
60–65
9.5%
11%
20.5%
65–70
7%
8.5%
15.5%
How CPF Allocation Works
Your total CPF contribution doesn't all go into one bucket. It's allocated across the three accounts based on your age. The allocation is designed to prioritise retirement savings as you get older — the OA share decreases, and SA/MA shares increase.
For example, if you're under 35 earning $5,000/month: your total CPF contribution is $1,850 ($1,000 employee + $850 employer). Of that, roughly $1,295 goes to OA, $296 to SA, and $259 to MA. These allocations shift over time as CPF Board adjusts the ratios with age.
Using CPF for Housing: The Full Picture
Your OA can be used to fund the purchase of HDB flats and private properties, as well as to service the monthly mortgage (for HDB loans and some private loans). This is attractive because it reduces out-of-pocket cash — but there's a critical implication most people miss.
The CPF Accrued Interest Rule: when you sell a property, you must refund everything you withdrew from CPF (for purchase and servicing), plus the interest those funds would have earned at 2.5% per year⁷ — as if they had stayed in your OA. This can significantly reduce your actual cash proceeds on sale.
Example: The Accrued Interest Impact
You buy a flat and use $200,000 from CPF OA (purchase + servicing) over 10 years. At sale, you must refund $200,000 + approximately $56,000 in accrued interest (10 years at 2.5% compounded) = $256,000 back to CPF.
If your flat appreciated by $200,000, you don't pocket $200,000 in cash. After refunding CPF, you might net $144,000 in cash — or less. The CPF refund must be made regardless of your profit or loss on the property.
Key implication: using CPF OA extensively for housing can leave you with less cash at retirement and forces careful planning if you intend to sell, downgrade, or buy a second property.
Retirement Sums: BRS, FRS, and ERS
At age 55, a Retirement Account (RA) is created. CPF Board sets three retirement sum targets that determine how much you need and what payouts you'll receive from CPF LIFE.³ These sums are updated annually — as of 2025 (cohort turning 55):
CPF Retirement Sums (2025 Cohort, Approximate)
BRS
~$106,500
Basic Retirement Sum. Min payout ~$900/month from age 65 if you own a property.
FRS
~$213,000
Full Retirement Sum. Monthly payout ~$1,600–1,900 from age 65. Standard target.
ERS
~$426,000
Enhanced Retirement Sum. Monthly payout ~$2,900–3,200 from age 65. Maximum.
These figures are indicative. Actual CPF LIFE payouts depend on the plan chosen (Standard, Basic, or Escalating) and precise RA balance at 65. Consult CPF Board's estimator for personalised projections.
~$213,000
Full Retirement Sum (FRS) target for 2025 — the baseline most Singaporeans should aim for
Voluntary CPF Top-Ups: The Best Risk-Free Return in Singapore
One of the most underutilised strategies in Singapore personal finance is making voluntary top-ups to your CPF. The Retirement Sum Topping-Up Scheme (RSTU) allows you to voluntarily top up your SA (under 55) or RA (55 and above) — and you receive tax relief of up to $8,000 per year for self-top-ups and another $8,000 for topping up family members.⁵
The math is compelling: if you're in the 15% income tax bracket and contribute $8,000, you save $1,200 in taxes and earn 4% guaranteed interest on those funds. That's effectively a risk-free return before even counting the tax savings. For higher earners in the 18–22% bracket, the after-tax return is even more attractive.
Important caveat: SA top-ups are irreversible. Once in, that money can only be used for retirement. You cannot withdraw it for housing, education, or emergencies. Only top up amounts you are genuinely committed to leaving as retirement savings.
Other Voluntary CPF Strategies
Voluntary Ordinary Wage contributions above the mandatory amount — useful for topping up MediSave to the Basic Healthcare Sum, which then stops attracting mandatory contributions.
CPFIS (CPF Investment Scheme) — allows investment of OA funds above $20,000 and SA funds above $40,000 into approved instruments. Research consistently shows that most CPFIS investors underperform the CPF guaranteed interest rates after fees. Proceed with strong evidence.
SRS (Supplementary Retirement Scheme) — technically separate from CPF but works similarly. Contributions (up to $15,300/year for citizens/PRs) earn a full tax deduction. Funds must be invested; otherwise they earn only 0.05% interest. Open SRS accounts early — even a small amount preserves the tax benefit.
CPF LIFE: Turning Savings Into Lifelong Income
CPF LIFE (Lifelong Income For the Elderly) is Singapore's national longevity insurance scheme. From age 65, your RA balance is used to fund monthly payouts for life — regardless of how long you live. This eliminates the risk of outliving your retirement savings.
There are three CPF LIFE plans: the Standard Plan (higher payouts, lower bequest); the Basic Plan (lower payouts, larger bequest for heirs); and the Escalating Plan (starting payouts 20% lower but increasing by 2% per year to protect against inflation). Most financial planners recommend the Standard Plan for most people.
You can defer payouts beyond 65 to up to age 70. For every year you defer, your monthly payout increases by approximately 6–7%.⁸ If your health is good and you have other income sources, deferring CPF LIFE payouts to 70 can significantly boost lifetime income. This is one of the highest guaranteed "investment returns" available anywhere.
The 6 CPF Decisions That Matter Most
1. How much OA to use for housing
Using OA maximises your cash flow for property purchases — but depletes retirement savings and creates an accrued interest liability at sale. Model this carefully before committing. Some Singaporeans preserve OA by taking HDB loans instead of bank loans.
2. Whether to top up your SA before 55
Voluntary SA top-ups are the highest guaranteed return available — 4% risk-free, with tax relief. The tradeoff: complete liquidity loss until retirement age. Best for those who have sufficient accessible savings elsewhere.
3. Whether to invest CPF OA via CPFIS
The bar for CPFIS is high: you must consistently beat 2.5% after all fees to justify the risk. Historical data suggests most retail investors fail this test. Keep CPFIS investments simple (low-cost ETFs only) or don't use it at all.
4. Which CPF LIFE plan to choose
For most people, Standard Plan maximises monthly income in retirement. Basic Plan suits those wanting to leave an inheritance. Escalating Plan suits those worried about inflation eroding purchasing power over a 25-30 year retirement.
5. Whether to defer CPF LIFE payouts
Each year of deferral beyond 65 (up to 70) increases payouts by ~6-7%. If you have other income sources (rental, SRS withdrawals, investments), deferring to 70 can substantially increase your lifetime CPF income. This is one of the most powerful risk-free "investments" available to retirees.
6. Making a CPF nomination
CPF monies do not form part of your estate and cannot be distributed via a will. Without a CPF nomination, your CPF balance is paid to the Public Trustee's office — distributable under intestacy law, which may not reflect your wishes. Make a nomination even if you're young with little CPF balance.
Not sure how CPF fits into your retirement plan?
We model CPF projections as part of every financial plan — including how your OA, SA, housing decisions, top-up strategies, and CPF LIFE payouts interact to shape your retirement income.
References
¹ Central Provident Fund Board. "CPF Contribution Rates from 1 January 2024." cpf.gov.sg
² Central Provident Fund Board. "CPF Allocation Rates by Age Group." cpf.gov.sg — OA, SA, MA allocation percentages.
³ Central Provident Fund Board. "Retirement Sum Scheme." cpf.gov.sg — BRS, FRS, ERS amounts for 2025 cohort.
⁴ Central Provident Fund Board. "CPF LIFE Scheme — Standard, Basic, and Escalating Plans." cpf.gov.sg
⁵ Inland Revenue Authority of Singapore. "Tax Relief for CPF Cash Top-ups (RSTU)." iras.gov.sg — Up to $8,000/year.
⁶ Central Provident Fund Board. "CPF Investment Scheme." cpf.gov.sg — OA above $20,000, SA above $40,000.
⁷ Central Provident Fund Board. "Accrued Interest Policy for Housing." cpf.gov.sg
⁸ Central Provident Fund Board. "Deferring CPF LIFE Payouts." cpf.gov.sg — Approx. 6-7% increase per year of deferral.