SRS, CPF Top-Up & Donation Tax Relief Calculator 2026
See exactly how much income tax you'll save next year by topping up your SRS, your own CPF and your family's CPF, and by donating to charity before 31 December, and which option suits your money best.
How much tax will I save?
Enter your 2026 income. We work out your tax for YA2027 with and without top-ups, using IRAS's resident tax rates, the S$80,000 relief cap and CPF's top-up limits. Nothing you type leaves your browser.
| Income | – |
| Donation deduction (250%) | – |
| Assessable income | – |
| Existing reliefs (earned income, CPF, other) | – |
| Relief from your top-ups | – |
| Chargeable income after top-ups | – |
| Tax without top-ups | – |
| Tax with top-ups | – |
SRS vs CPF top-up: which should you choose?
Each dollar saves the same tax. The difference is what happens to the money afterwards.
| SRS | CPF top-up (yourself) | CPF top-up (family) | |
|---|---|---|---|
| Relief limit | S$15,300 (citizen/PR), S$35,700 (foreigner) | S$8,000, and only up to the FRS or BHS room | S$8,000 in total |
| Returns | Whatever you invest it in. Uninvested SRS cash earns very little | 4% floor on SA/RA/MediSave (to end-2027), plus extra interest on the first S$60,000 | Same, in their account |
| Access | From the statutory retirement age when you first contributed (64 from 1 Jul 2026). Early withdrawal: fully taxed + 5% penalty | Locked for retirement (CPF LIFE payouts) or healthcare | Locked in their CPF |
| Tax later | 50% of each withdrawal is taxable, spread over 10 years. About S$40,000 a year is effectively tax-free if you have no other income | None | None |
| Best for | Higher earners who want flexibility and will invest the money | A guaranteed return and a bigger CPF LIFE payout | Supporting parents while cutting your own tax |
Donations: a 250% tax deduction
Cash donations to an approved charity, called an Institution of a Public Character (IPC), are deducted from your income at 2.5 times the amount you give. A S$1,000 donation in 2026 takes S$2,500 off your income for YA2027. At an 11.5% marginal rate that's S$287.50 back, so the gift really costs you about S$712.50.
No cap, no claim form
Donation deductions aren't personal reliefs, so the S$80,000 relief cap doesn't apply. Give the charity your NRIC/FIN and IRAS adds the deduction automatically. You don't declare it, and IRAS doesn't accept receipts as claims.
What counts
Outright cash donations to IPCs, plus listed shares and unit trusts, land and buildings, artefacts and public art. If you get something back, like a dinner ticket, only the amount above its value counts. Not every registered charity is an IPC, so check first.
Until 2029
Budget 2026 extended the 250% rate to donations made up to 31 Dec 2029. A deduction bigger than your income can be carried forward for up to 5 years.
A charity we'd like to highlight: Muscular Dystrophy Association (Singapore)
Since 2000, MDAS has supported people living with muscular dystrophy, a group of genetic conditions that cause progressive muscle weakness and have no cure, together with their families. Its services include physiotherapy, specialised transport, skills and employment programmes, respite care, equipment grants and counselling. MDAS is a registered charity with IPC status (member of the Health Endowment Central Fund, valid 12 Jul 2025 to 11 Jul 2028), so cash donations qualify for the 250% deduction.
Donate on Giving.sg →Donate on Give.asia →Other ways to give
DLCuration isn't affiliated with MDAS and earns nothing from donations. Whichever way you give, enter your NRIC/FIN so MDAS can submit it to IRAS for your deduction. MDAS issues receipts on request for donations of S$50 and above.
How the tax saving is worked out
Top-ups reduce your chargeable income, and Singapore's progressive rates decide how much tax that saves. Your saving is roughly the amount you top up times your marginal tax rate, which is why the same S$8,000 saves S$160 at a chargeable income of S$30,000 but S$920 at S$100,000.
| Chargeable income | Rate | Tax on the band | Total tax up to here |
|---|
Resident rates for YA2024 onwards, from IRAS. No personal income tax rebate has been announced for YA2027, so none is applied.
How to top up before 31 December
SRS
Open an SRS account with DBS, OCBC or UOB (only one account is allowed), then transfer cash into it through the bank's app. The money must land by 31 Dec, or your bank's earlier cut-off.
Don't leave it sitting as cash: many people put SRS money into T-bills, Singapore Savings Bonds, funds or shares.
CPF for yourself
Make a cash top-up on the CPF website or app. CPF Board must receive it by 31 Dec. Relief is automatic, so you don't need to claim it.
Only cash counts. Transferring from your OA to SA gets no relief.
CPF for family
Top up a parent's, grandparent's or in-law's SA, RA or MediSave the same way. If the top-up attracts a Matched Retirement Savings Scheme or MediSave matching grant, that portion gets no relief.
Frequently asked questions
How much tax can I save with SRS?
Every dollar you put into SRS (up to S$15,300 for citizens and PRs, S$35,700 for foreigners) comes off your chargeable income, so you save your marginal tax rate on it. At a chargeable income of S$100,000 the marginal rate is 11.5%, so a full S$15,300 saves about S$1,760.
What is the deadline for SRS and CPF top-ups to count for YA2027?
SRS contributions must be made by 31 Dec 2026, and your bank may set an earlier cut-off. CPF Board must receive cash top-ups by 31 Dec 2026. Relief is given automatically in YA2027, the tax you pay in 2027 on your 2026 income.
How much CPF top-up relief can I get?
Up to S$16,000 a year: S$8,000 for cash top-ups to your own SA, RA or MediSave, plus S$8,000 for eligible family members. For your own retirement account, relief only covers the room left below the Full Retirement Sum (S$220,400 for YA2027). For MediSave, it's the room below the Basic Healthcare Sum (S$79,000).
Can I get tax relief for topping up my parents' CPF?
Yes. Parents, parents-in-law and grandparents qualify with no income test, up to S$8,000 a year for all your family top-ups combined. A spouse or sibling qualifies only if they earned S$8,000 or less in the previous year, or has a disability. Any part that attracts a Matched Retirement Savings Scheme grant gets no relief.
Is the S$80,000 relief cap a problem?
All your reliefs together (including CPF relief on your salary, SRS and cash top-ups) are capped at S$80,000 per Year of Assessment. Most people are well below it, but the calculator warns you if you'd go over. SRS contributions can't be refunded, so check first.
How much tax do I save by donating to charity in Singapore?
Cash donations to an IPC get a 250% tax deduction, so a S$1,000 donation reduces your income by S$2,500 in the following Year of Assessment. At an 11.5% marginal rate that saves S$287.50. The S$80,000 relief cap doesn't apply to donations, and Budget 2026 extended the 250% rate to donations made up to 31 Dec 2029.
Should I top up SRS or CPF first?
Both save the same tax per dollar. CPF top-ups earn a guaranteed 4% or more and are never taxed again, but the money is locked for retirement. SRS money can be invested freely and withdrawn from the statutory retirement age, when only 50% of each withdrawal is taxable, but early withdrawals are fully taxed plus a 5% penalty. Many people do CPF for certainty and SRS for flexibility.
Is it worth it if I pay little tax?
Usually not for SRS. If your chargeable income is under S$30,000 your marginal rate is 2% or less, so S$1,000 in SRS saves at most S$20 while locking the money up. A CPF top-up can still make sense for the 4% interest, but not mainly for the tax.
Where these rules come from
Tax rates, the S$80,000 relief cap, SRS caps and withdrawal rules, CPF cash top-up relief and earned income relief come from IRAS: income tax rates, SRS relief, CPF cash top-up relief, earned income relief CPF relief for employees and donations. The extension of the 250% donation deduction to 2029 is from Budget 2026 (Annex A, proposed changes to the Income Tax Act). MDAS details are from MDAS and Giving.sg. CPF interest rates, retirement sums and matching grants come from CPF Board. Checked 28 Oct 2026. This calculator is for employees who are tax residents; self-employed income and CPF rates for ages 55 and above are simplified. Spot an error? Email dlcuration@gmail.com.