Michelle Sim, 41, is a finance manager at a shipping firm. She earns $9,500 a month and received a $7,400 bonus this year, and after $20,400 of CPF relief and $1,000 of earned income relief, her chargeable income for 2026 is $100,000. That puts her tax for Year of Assessment (YA) 2027 at $5,650 before any rebate. In November, with $30,000 in savings above her emergency fund, she asks which scheme would cut more of that bill.
According to the Inland Revenue Authority of Singapore (IRAS), a contribution to the Supplementary Retirement Scheme (SRS) and a cash top-up to CPF both come off chargeable income, dollar for dollar, if the money goes in by 31 December. At the same amount and the same income, the two save the same tax. SRS money can be withdrawn early with a tax charge and a 5% penalty, while a CPF top-up cannot come out early at all.
At Michelle's income, an $8,000 top-up to her own CPF account saves $920, the full $15,300 in SRS saves $1,760, and both together save $2,531. The sections below compare the caps and the tax each scheme saves at seven income levels, then set out how SRS withdrawals are taxed and when her SRS withdrawal age is fixed.
How Do SRS And CPF Cash Top-Ups Compare?
| CPF cash top-up | SRS contribution | |
|---|---|---|
| Relief cap | $16,000, as $8,000 own and $8,000 family | $15,300, or $35,700 for foreigners |
| Who can claim | Singapore Citizens and Permanent Residents | Citizens, Permanent Residents and foreigners who are tax resident |
| Where it goes | Special or Retirement Account, and MediSave | An SRS account at DBS, OCBC or UOB |
| What it earns | 4% a year, with the floor extended to 31 December 2027 | Whatever it is invested in; cash earns close to nothing |
| When it comes out | From 55, and only above the Full Retirement Sum | From the SRS withdrawal age, spread over up to ten years |
| Tax on withdrawal | None | 50% of each withdrawal is chargeable |
| Early withdrawal | Not possible | Possible, fully chargeable plus a 5% penalty |
Sources: IRAS, CPF cash top-up relief, IRAS, SRS contributions and tax relief, IRAS, Tax on SRS withdrawals and CPF Board, interest rates, all checked 27 September 2026.
Both reliefs count towards the $80,000 personal income tax relief cap that IRAS applies to all reliefs in a Year of Assessment. SRS relief is only allowed if the contributor is a tax resident for that year, and IRAS withdraws the relief on any amount contributed and withdrawn in the same year.
Michelle is a Singapore Citizen and a tax resident, so both schemes are open to her. With both, her reliefs would total $20,400 + $1,000 + $8,000 + $15,300 = $44,700, well inside the $80,000 cap.
Read Also: Is A CPF Cash Top-Up Worth It In 2026?
How Much Tax Would Each Scheme Save Her?
A relief saves tax at the taxpayer's highest band. The table below applies the IRAS resident tax rates for YA 2024 onwards (checked 27 September 2026) to four contribution amounts. Chargeable income is income after all other reliefs, and the figures exclude any tax rebate. Michelle's figures are in the $100,000 row.
| Chargeable income | $8,000 CPF top-up | $15,300 SRS | $8,000 top-up and $15,300 SRS | $35,700 SRS (foreigner) |
|---|---|---|---|---|
| $60,000 | $560 | $1,071 | $1,516 | $1,864 |
| $80,000 | $560 | $1,071 | $1,631 | $2,499 |
| $100,000 (Michelle) | $920 | $1,760 | $2,531 | $3,399 |
| $120,000 | $920 | $1,760 | $2,680 | $4,106 |
| $160,000 | $1,200 | $2,295 | $3,495 | $5,355 |
| $200,000 | $1,440 | $2,754 | $4,194 | $6,426 |
| $300,000 | $1,600 | $3,060 | $4,644 | $7,062 |
Source: IRAS
Per dollar, the two save the same. At Michelle's $100,000, $8,000 in either scheme saves $8,000 × 11.5% = $920. The SRS column is larger only because its cap is larger.
Using both schemes pushes part of the relief into a lower band. Her first $20,000 of relief saves $20,000 × 11.5% = $2,300, and the last $3,300 falls into the 7% band and saves $3,300 × 7% = $231. Together that is $2,531, and her tax falls to $3,119.
Her colleague Tom, an engineer from the United Kingdom who is tax resident on the same $100,000, cannot claim CPF top-up relief. He can put up to $35,700 into SRS instead, which saves him $3,399.
Which Should She Fill First?
When the tax saved is the same, SRS is the better first choice on access. A withdrawal before the SRS withdrawal age is fully chargeable and carries a 5% penalty. That is expensive, but the money is still available in an emergency. The CPF Board treats a cash top-up as irreversible.
The CPF top-up comes first in two situations. One is when it saves more tax, for example when the taxpayer has already used the SRS cap. The other is when a guaranteed return matters more than access, since Special and Retirement Account savings earn at least 4% until the end of 2027 and SRS returns depend on how the money is invested.
Neither applies to Michelle, who has not used either cap. SRS takes her first $15,300. She does not expect to need another $8,000 before 55, so a top-up to her own Special Account is her second step.
How Would Her SRS Money Be Taxed On Withdrawal?
According to IRAS, only 50% of a withdrawal made on or after the SRS withdrawal age is taxable. Penalty-free withdrawals can be spread over 10 years from the first one. Any balance left at the end of the 10 years is treated as withdrawn, and 50% of it is taxed.
If Michelle contributes $15,300 a year for 20 years, she puts in 20 × $15,300 = $306,000 before any investment return. The table uses a round $300,000.
| $300,000 SRS balance, no other income | Withdrawn over 10 years | Withdrawn in one year |
|---|---|---|
| Amount withdrawn a year | $30,000 | $300,000 |
| Taxable amount a year (50%) | $15,000 | $150,000 |
| Tax a year | $0 | $12,450 |
| Total tax | $0 | $12,450 |
Source: IRAS
The first $20,000 of chargeable income is taxed at 0%, so $15,000 a year attracts no tax. Taken in one year, $150,000 of chargeable income costs $12,450 in tax before any relief. IRAS notes that a retiree with no other taxable income can withdraw up to $40,000 a year, or $400,000 over 10 years, without paying tax.
Michelle gets relief now at 11.5%, the top band she pays while working. If she spreads her withdrawals over ten years and has no other income then, she pays no tax on the way out.
Read Also: How Much Tax Do You Pay When Withdrawing From Your SRS Account?
What Would An Early Withdrawal Cost Her?
A withdrawal before the withdrawal age is added in full to chargeable income, with a 5% penalty on top. IRAS exempts some cases from the penalty, including withdrawals on medical grounds and a full withdrawal by a foreigner who has held the account for at least 10 years.
With $100,000 of other chargeable income, an early withdrawal of $20,000 would fall in Michelle's 11.5% band. The tax is $20,000 × 11.5% = $2,300, and the penalty is $20,000 × 5% = $1,000, so the withdrawal costs $3,300. The same $20,000 in a CPF top-up would stay in CPF until at least 55.
When Is Her SRS Withdrawal Age Fixed?
A member's SRS withdrawal age is the statutory retirement age on the day of the first contribution, and it stays fixed from then on. IRAS confirms the statutory retirement age rose from 63 to 64 on 1 July 2026. It is legislated to reach 65 by 2030.
Members who made their first contribution before 1 July 2026 locked in 63. Michelle's first contribution in December 2026 locks in 64, so she can withdraw without a penalty in 23 years. Taxpayers who expect to use SRS within the next ten years can make a small contribution before the next increase, whatever they decide about the full amount.
Read Also: Work Out Your Household's Income Tax And Reliefs In Cashmere Pocket
SRS Or CPF Top-Up: Which Suits Whom?
Michelle pays $15,300 into a new SRS account and tops up her Special Account by $8,000 before 31 December. The two payments use $23,300 of her $30,000 in savings and save $2,531 in tax, so her YA 2027 bill falls from $5,650 to $3,119. She invests the SRS money, since cash in SRS earns close to nothing.
SRS suits taxpayers in the 7% band or above who want the relief but may need the money before retirement, and foreigners such as Tom, who have a $35,700 cap and cannot claim CPF top-up relief. The CPF top-up suits Singapore Citizens and Permanent Residents who will not need the money before 55 and want a guaranteed 4%. Many higher earners use both, and the order depends on their income, their other reliefs and how much access to the money they need.