“CPF optimisation” sounds technical, but the strategies come down to a handful of choices: which account your money sits in, when you add to it, and when you start drawing on it. Each choice has a rule, a limit and a cost.
This guide sorts every legitimate move by age, using the rules in force for 2026 and those confirmed for 2027. It also lists the popular tactics that have ended, because a lot of older advice still circulates.
The Numbers All CPF Optimisation Strategies Hang On
Almost every strategy below is built on these figures. All come from CPF Board, IRAS or the Ministry of Health.
| Item | 2026 | 2027 |
|---|---|---|
| Ordinary Account (OA) interest | 2.5% a year (legislated minimum) | Reviewed quarterly |
| Special, MediSave, Retirement Account interest | 4% a year (floor) | 4% floor extended to 31 December 2027 |
| Basic Retirement Sum (BRS) | S$110,200 | $114,100 |
| Full Retirement Sum (FRS) | $220,400 | $228,200 |
| Enhanced Retirement Sum (ERS) | $440,800 | $456,400 |
| Basic Healthcare Sum (BHS) | $79,000 | Not announced at the time of writing |
| CPF Annual Limit | $37,740 | Check CPF Board |
| Cash top-up tax relief | Up to $8,000 (self) plus $8,000 (family) | Check IRAS |
On top of the base rates, members below 55 earn an extra 1% on the first $60,000 of combined balances, of which no more than $20,000 can come from the OA. From 55, it is an extra 2% on the first $30,000 and 1% on the next $30,000.
You can model how balances grow with our CPF interest projector, and see where each month’s contribution lands with the CPF contribution calculator.
In Your 20s and 30s
Time is the main asset here, and housing is the main competing use for CPF.
- Decide how much OA your home really needs. Money spent on a flat stops earning OA interest, and it has to be returned with accrued interest when you sell. The accrued interest calculator shows the size of that bill.
- Cash top-ups to your Special Account (SA). Up to the current FRS, earning the 4% floor, with tax relief of up to $8,000 a year. The catch is that the money is locked for retirement. See cash top-ups versus OA-to-SA transfers.
- OA-to-SA transfers. Same higher rate, no tax relief, and the money can never return to the OA for a home.
- MediSave top-ups. These share the same $8,000 relief and earn the 4% floor, but can only be spent on approved healthcare. See the MediSave top-up.
- The “$1 million by 65” idea. The arithmetic of compounding is real, but the assumptions matter more than the headline. We work through it in 1M65 explained.
At this age the largest risk is locking away money you will later want for a home, a child or a career break.
From 40 to 54
Housing plans are usually clearer, incomes and tax rates are often higher, and 55 is in sight.
- Top-ups for tax relief become more valuable. The tax saved is the relief multiplied by your marginal rate. Our top-up tax relief calculator and income tax calculator show the figure.
- Filling MediSave to the BHS. Once your MediSave Account holds the BHS, further MediSave contributions flow to your SA, or to your OA if your SA already holds the FRS.
- Voluntary housing refund. Returning CPF used for your home puts cash back into your OA. It earns OA interest, attracts no tax relief and cannot be reversed. See when a housing refund makes sense.
- Investing OA savings. T-bills, fixed deposits and other products under the CPF Investment Scheme only help if they beat 2.5% after lost interest and fees. See the break-even maths and our OA versus invest calculator.
- Know what happens at 55. Your SA closes. Plan around that, not around older advice. See after the SA closure.
From 55 to 64
At 55 a Retirement Account (RA) is created from your SA savings first, then your OA, up to your cohort’s FRS. The SA closes and anything left moves to the OA.
- Topping up the RA, up to the ERS. This raises CPF LIFE payouts and earns the 4% floor, but the money comes back only as monthly income. See RA top-ups between 55 and 64.
- Leaving savings in the OA. They earn 2.5% and stay withdrawable. Doing nothing is a legitimate choice.
- Matched grants. Lower-balance members may get dollar-for-dollar matching on cash top-ups. See the Matched Retirement Savings Scheme and family top-ups.
- Checking every move first. Our list of questions to ask before moving CPF money after 55 covers what must stay and what cannot be undone.
The CPF retirement sum planner shows how far your balances are from each retirement sum.
From 65
The decisions shift from building savings to turning them into income.
- When to start CPF LIFE. Payouts can start any time from 65 to 70. CPF Board says each year of deferral raises them by up to 7%. See deferring CPF LIFE to 70.
- Which plan. The Standard, Basic and Escalating plans pay out differently. See the three CPF LIFE plans compared.
- Late top-ups. RA top-ups up to the ERS remain possible and still raise payouts.
- Making the money last. Our retirement timeline calculator and the article on when the money runs out put CPF LIFE alongside your other savings.
If You Are Self-Employed
No employer pays into your CPF, so the gaps are bigger and the choices are yours.
MediSave contributions are compulsory once net trade income exceeds $6,000 a year. Beyond that, you can make voluntary contributions to all three accounts up to the Annual Limit, with tax relief subject to caps. See CPF for the self-employed.
What No Longer Works, and What Every Move Costs
Rules change, and several well-known tactics have ended or shrunk.
- “SA shielding” has ended. It relied on the SA surviving past 55. Since January 2025 it does not.
- Earning the SA rate on withdrawable money after 55 has ended. Savings you can withdraw now sit in the OA at the OA rate.
- Tax relief on matched top-ups has ended. Top-ups that attract a Matched Retirement Savings Scheme grant get no relief from Year of Assessment 2026. The same applies to Matched MediSave Scheme top-ups from Year of Assessment 2027.
- The relief cap is not $7,000 any more. Since 2022 it is $8,000 for yourself, shared between retirement and MediSave top-ups, plus $8,000 for family.
- The ERS is larger. Since 2025 it is four times the BRS, so there is more room to top up after 55.
Every remaining strategy carries the same three costs. Know them before acting.
- Irreversibility. Top-ups, transfers and housing refunds cannot be taken back.
- Liquidity. Money in the SA, RA and MediSave cannot pay for a home, a business or an emergency.
- Policy risk. The 4% floor is confirmed only to the end of 2027. Limits, ages and account rules have changed before and can change again.
The short version: CPF optimisation is mostly about moving money from flexible, lower-interest places to locked, higher-interest ones, sometimes with tax relief. The gain is real and guaranteed at current rates. The price is access to your money.
What To Do Next
- Log in to your CPF dashboards and note your OA, SA or RA, and MediSave balances against the FRS and BHS.
- Settle your cash emergency buffer and housing plans before considering any irreversible move.
- Pick the life-stage section above that fits you and read the linked article before acting.
- Test your numbers with the calculators linked in this guide, then confirm them on CPF Board’s own calculators.
- Re-check the figures each January, when retirement sums and the BHS are updated.
