Singapore Compound Interest Calculator
Use our advanced compound interest calculator to see how your investments can grow over time. Adjust the parameters to find the perfect investment strategy for your goals.
Enter Your Details
Provide your age, income, and current super balance.
Add Contributions
Include any voluntary contributions you plan to make.
See Your Future
Instantly get a detailed projection and visual breakdown.
Compound Interest CalculatorUpdated Jan 2026
Project your investment growth
Advanced Options
MAS target: 1-3% p.a.
No CGT in Singapore
Compound Interest Calculator Singapore
Calculate how your money grows with compound interest. This calculator helps Singapore investors understand:
The Compound Interest Formula
A = P(1 + r/n)^(nt)
- A = Final amount
- P = Principal (initial investment)
- r = Annual interest rate (decimal)
- n = Compounding frequency per year
- t = Time in years
Historical Average Returns (Singapore) - January 2026
- Straits Times Index (STI): 7.5% p.a. (20-year average, including dividends)
- Singapore REITs: 6-8% p.a. (including distributions)
- Singapore Savings Bonds: 2.8-3.2% p.a. (10-year average)
- Fixed Deposits: 2.5-3.2% p.a. (current rates)
- CPF Special Account: 4.08% p.a. (guaranteed)
The Rule of 72
A quick way to estimate how long it takes to double your money: 72 ÷ interest rate = years to double. At 7% return, money doubles approximately every 10.3 years.
Compounding Frequency Impact
More frequent compounding leads to higher returns. For a S$10,000 investment at 7% over 10 years:
- Annual compounding: S$19,672
- Monthly compounding: S$20,097
- Daily compounding: S$20,138
Tax Considerations (2025-26)
- No Capital Gains Tax in Singapore
- Dividend income: Generally not taxable for individuals
- Interest income: Not taxable for individuals
- CPF contributions: Tax deductible, earnings tax-free
- SRS contributions: Tax deductible up to S$15,300 (citizens/PRs)
- SRS withdrawals: 50% taxable at retirement
CPF Interest Rates (2026)
- Ordinary Account (OA): 2.5% p.a.
- Special Account (SA): 4.08% p.a.
- MediSave Account (MA): 4.08% p.a.
- Retirement Account (RA): 4.08% p.a.
- Extra 1% on first S$60,000 combined balances
- Extra 2% on first S$30,000 combined (age 55+)
Future Value after 10 years
S$85,000
↑ S$75,000 total growth
If you started 5 years earlier
+S$45,000
If rate was +1% higher
+S$8,500
Growth Projection
💡 The Rule of 72
At 7% annual return, your money doubles every 10.3 years. This simple rule helps estimate compound growth: 72 ÷ interest rate = years to double.
Investment Composition
Yearly Breakdown
| Year | Contributions | Interest | Balance |
|---|
Scenario Comparison
See how different strategies affect your final balance.
Compounding Frequency Comparison
| Frequency | Final Value | Difference |
|---|
📊 Historical Returns (Singapore) - Jan 2026
- STI (20-yr avg): 7.5% p.a.
- Singapore REITs: 6-8% p.a.
- CPF Special Account: 4.08% p.a.
- Fixed Deposits: 2.5-3.2% p.a.
- Singapore Savings Bonds: 2.8-3.2% p.a.
AI Investment Insights
Personalised Recommendations
Interest Breakdown
These insights are for educational purposes. Consult a licensed financial adviser for personal advice.
Investment Milestones
Track your progress toward key financial goals.
When Will You Reach...
| Target | Years | Date |
|---|
🎯 CPF Retirement Sums (2026)
For retirement at age 55:
- Basic Retirement Sum (BRS): S$106,500
- Full Retirement Sum (FRS): S$213,000
- Enhanced Retirement Sum (ERS): S$426,000
CPF LIFE provides lifelong monthly payouts from age 65
Disclaimer: This calculator provides estimates only and does not constitute financial advice. Past performance is not indicative of future returns. Consult a licensed financial adviser for personal advice. Updated January 2026.
Maximize your CPF returns with strategic contributions. Calculate your CPF growth across OA, SA, and MA accounts with Singapore’s guaranteed interest rates up to 6%.
What is Compound Interest?
Compound interest is the phenomenon where your investment earns returns, and those returns themselves earn returns, creating a snowball effect that accelerates wealth accumulation over time. Unlike simple interest which only earns on your principal, compound interest creates exponential growth.
Albert Einstein allegedly called compound interest “the eighth wonder of the world,” noting that “he who understands it, earns it; he who doesn’t, pays it.” This fundamental principle is the difference between financial struggle and financial freedom for most Australians.
The magic happens because each period’s interest becomes part of the principal for the next period. Over decades, this effect becomes dramatic—a $10,000 investment at 8% grows to $46,600 in 20 years and $100,600 in 30 years. The longer you wait, the more powerful compound interest becomes.
Formula
A = P(1 + r/n)^(nt)
Where A = final amount, P = principal, r = annual interest rate, n = compounding frequency, t = time in years
Exponential Growth
Your money grows faster over time as interest earns interest, creating a powerful snowball effect that accelerates wealth accumulation.
Regular Contributions
Small, consistent monthly contributions can dramatically boost your final investment value through the power of dollar-cost averaging.
Time Advantage
Starting early gives you the greatest advantage in building wealth. Time is your most valuable asset in the compound interest equation.
Master the Art of Investing
Learn the fundamental principles of compound interest and how to apply them to build lasting wealth over time.
The Power of Compounding
Albert Einstein reportedly called compound interest 'the eighth wonder of the world.' Your money earns money, which then earns more money.
Time is Your Best Friend
The earlier you start, the less you need to save monthly to reach your goals. A 25-year-old needs to save less than half of what a 35-year-old needs for the same retirement goal.
Dollar-Cost Averaging
Regular contributions help smooth out market volatility. You buy more shares when prices are low and fewer when prices are high.
Set Clear Goals
Having specific financial goals helps you stay motivated and make informed decisions about how much to save and invest.
Singapore Investment Options & Historical Returns
Different investment types offer varying returns and compounding frequencies. Understanding these options helps you choose the right strategy for your goals and risk tolerance.
High-Interest Savings Accounts
Very Low RiskSDIC-insured savings from DBS, OCBC, UOB and digital banks. Bonus rates for salary credit, card spend, and investments. Protected up to S$100,000.
✓ Advantages
- SDIC insured S$100K
- Instant access to funds
- No market risk
- No tax on interest
✗ Considerations
- Complex bonus conditions
- Rates can change
- Balance caps apply
- Inflation erosion risk
Fixed Deposits
Very Low RiskFixed-rate deposits locked for set periods (1 month to 36 months). SDIC insured with guaranteed returns. Promotional rates often available.
✓ Advantages
- Locked-in rate
- SDIC insured S$100K
- Predictable returns
- No tax on interest
✗ Considerations
- Funds locked away
- Early withdrawal penalties
- Miss rate increases
- Minimum deposits apply
Singapore Savings Bonds (SSB)
Low to Medium RiskGovernment-backed bonds with flexible redemption. Step-up interest rates over 10 years. No penalty for early redemption. S$200K individual limit.
✓ Advantages
- Government guaranteed
- No early redemption penalty
- Step-up interest rates
- No capital risk
✗ Considerations
- S$200K limit per person
- Monthly application needed
- Lower returns vs equities
- Step-up takes time
CPF Special Account (SA)
Low to Medium RiskCPF Special Account for retirement. Guaranteed 4% p.a. (up to 5% with extra interest). Tax-free compounding. Government-backed with no market risk.
✓ Advantages
- Guaranteed 4% returns
- Extra 1% on first S$60K
- Government backed
- Tax-free growth
✗ Considerations
- Locked until 55 (BRS)
- Cannot withdraw freely
- Full Retirement Sum rules
- SA shielding changes
Gold & Precious Metals
Medium RiskPhysical gold, UOB Gold Savings, or Gold ETFs on SGX. No GST on investment-grade gold. Traditional inflation hedge priced in USD.
✓ Advantages
- Inflation hedge
- No GST on investment gold
- No capital gains tax
- UOB Gold Savings option
✗ Considerations
- No income/dividends
- Storage costs (physical)
- Price volatility
- USD/SGD currency risk
Robo-Advisors
Medium RiskAutomated portfolios from Syfe, StashAway, Endowus. Low minimum investment, automatic rebalancing. Some offer CPF/SRS investing options.
✓ Advantages
- Low minimum (S$1)
- Automatic rebalancing
- CPF/SRS options
- MAS regulated
✗ Considerations
- Management fees (0.2-0.8%)
- Less control
- Market volatility
- Platform risk
ETFs (Exchange Traded Funds)
Medium-High RiskSGX-listed ETFs tracking STI, global indices, or sectors. CPFIS-approved options available. Low-cost instant diversification.
✓ Advantages
- Very low fees
- CPFIS-approved options
- No capital gains tax
- SRS eligible
✗ Considerations
- Market risk exposure
- Brokerage fees apply
- US dividend withholding
- Currency risk
Property (Direct)
Medium-High RiskHDB, condo, or commercial property. Rental yields 2-4%. BSD, ABSD apply on purchases. CPF can be used for HDB and some private properties.
✓ Advantages
- CPF usable for purchase
- No capital gains tax
- Tangible asset
- Rental income stream
✗ Considerations
- High ABSD (20%+ foreigners)
- TDSR/MSR limits
- 5-year MOP for HDB
- High entry costs
S-REITs (Singapore REITs)
Medium-High RiskSGX-listed REITs like CapitaLand, Mapletree, Ascendas. Access commercial, industrial, retail, healthcare properties. Tax-transparent distributions.
✓ Advantages
- Tax-free distributions
- 5-8% dividend yields
- Liquid (trade on SGX)
- CPFIS-approved (some)
✗ Considerations
- Interest rate sensitive
- Share price volatility
- Gearing limits
- Sector concentration risk
CPF Investment Scheme (CPFIS)
Medium-High RiskInvest CPF OA/SA in approved unit trusts, ETFs, shares. Potential to beat CPF rates but with market risk. Must maintain minimum OA balance.
✓ Advantages
- Potential higher returns
- Wide product range
- Use idle CPF funds
- Tax-free gains
✗ Considerations
- Can underperform CPF rates
- Market risk on CPF
- Must retain S$20K OA
- Sales charges apply
SGX Stock Market
High RiskDirect share investment on SGX. No capital gains tax. Singapore dividends tax-free. Access blue chips like DBS, OCBC, Singtel through CDP account.
✓ Advantages
- No capital gains tax
- Tax-free SG dividends
- CPFIS-approved (some)
- SRS eligible
✗ Considerations
- High volatility
- Can lose capital
- Smaller market
- Board lot system
Cryptocurrency
Very High RiskDigital assets via MAS-licensed exchanges like Coinhako, Independent Reserve. No capital gains tax for individuals. 8% GST may apply on trading fees.
✓ Advantages
- No capital gains tax
- MAS-licensed exchanges
- 24/7 global market
- Staking rewards (some)
✗ Considerations
- Extreme volatility
- Can lose 50%+ quickly
- 8% GST on services
- Security/scam risks
See the Impact of Starting Early
Compare different investment scenarios and see how starting age and contribution amounts affect your final results.
The College Graduate
Starting early with modest contributions
$1.2M
| Starting Age | 22 years old |
| Initial Amount | $1,000 |
| Monthly Contribution | $200 |
| Investment Period | 43 years |
Assumes 7% annual return, compounded monthly
The Career Switcher
Mid-career financial planning
$1.1M
| Starting Age | 30 years old |
| Initial Amount | $5,000 |
| Monthly Contribution | $400 |
| Investment Period | 35 years |
Assumes 7% annual return, compounded monthly
The Late Starter
Accelerated savings for retirement
$950K
| Starting Age | 40 years old |
| Initial Amount | $15,000 |
| Monthly Contribution | $800 |
| Investment Period | 25 years |
Assumes 7% annual return, compounded monthly
Proven Strategies for Long-term Success
Follow these time-tested strategies to maximize your investment returns and build substantial wealth over time.
Start Early
The power of time in compound interest cannot be overstated. Starting your investment journey early gives you the greatest advantage.
- Begin investing in your 20s for maximum compound growth
- Even $50/month can grow to substantial amounts over decades
- Time is more valuable than large initial investments
Consistent Contributions
Regular monthly contributions can dramatically increase your final investment value through dollar-cost averaging.
- Set up automatic monthly transfers
- Increase contributions with salary raises
- Stay consistent even during market downturns
Optimize Interest Rates
Small differences in interest rates
- Research and compare investment options
- Consider diversified portfolios for better long-term returns
- Rebalance periodically to maintain target allocation
Avoid Early Withdrawals
Let your investments compound undisturbed. Early withdrawals eliminate future compound growth potential.
- Build an emergency fund separately
- Understand withdrawal penalties and tax implications
- Stay focused on long-term goals
Frequently Asked Questions
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About this calculator
Always consult with a qualified financial advisor before making significant investment decisions. Past performance doesn’t guarantee future results.