A Singapore-localised calculator pre-filled in SGD. Use it to project growth inside CPF Ordinary or Special Account, SRS, or a personal investment account.
A S$13,000 SRS balance plus S$500/month at 7% for 25 years grows to roughly S$425,000 — with full income-tax relief on contributions up to S$15,300 per year, the effective return is higher than the nominal rate suggests.
CPF Special Account earns a guaranteed 4% floor (plus a 1% bonus on the first S$60,000 across accounts for members 55+), making it one of the safest long-term compounders globally — but funds are locked until age 55.
Compound interest is interest earned on interest. Each period, your balance grows by the previous balance times the periodic rate, then your contribution is added. Over decades the compounded portion dwarfs the contributed portion — the "hockey stick" curve every personal-finance article keeps showing you.
P is your starting amount. PMT is each monthly contribution. r is the monthly rate (annual ÷ 12). n is the total number of months.
In a Singaporean context: Singapore has no capital gains tax and no dividend tax for individuals — growth in a personal investment account compounds entirely tax-free. SRS contributions attract income-tax relief up to S$15,300/year, with withdrawals at age 62 taxed at only 50% of the applicable rate. CPF interest and qualified withdrawals are fully tax-free. This makes Singapore one of the most tax-efficient environments for long-term compounding.
Important: figures are nominal — they don't subtract Singapore inflation. To see real growth, subtract a 2–3% CPI estimate from your return assumption.
Compound interest is interest earned on both your original deposit AND on the interest already credited. It causes balances to grow faster over time — the longer you leave money invested, the more dramatic the effect.
Future Value = Principal × (1 + r)n + PMT × ((1 + r)n − 1) / r, where r is the periodic interest rate (annual rate ÷ 12 for monthly compounding) and n is the total number of periods.
For a broadly diversified equity index fund inside an SRS account, 6–8% annualised is a common historical assumption. CPF Special Account earns a guaranteed 4% floor. This calculator does not promise any specific return — model multiple scenarios.
No — the figures shown are nominal. To see real (after-inflation) growth, subtract a Singapore CPI estimate (typically 2–3%) from your assumed return rate before entering it.
Singapore has no capital gains tax and no dividend tax for individuals, so growth in a personal investment account compounds tax-free. SRS contributions are tax-deductible up to S$15,300/year, with withdrawals at age 62 taxed at 50% of the rate that would otherwise apply. CPF interest and withdrawals are tax-free.
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