Investor Tool
Compound Interest Calculator
Visualize the long-term power of compounding and see when your money starts doing the hard work.
Decision Inputs
Your starting amount of money. E.g., $10,000
Amount added each month. Higher contributions grow your portfolio faster. E.g., $500
Time horizon in years. Longer periods allow more compounding. E.g., 30
Expected annual return percentage. Historical stock market average is ~7-10%. E.g., 8
Analysis Result
Calculation Pending
Adjust your inputs and click "Calculate Growth" to see your results.
Risks & Limitations
- Returns are never linear; actual market performance will fluctuate significantly year-to-year.
- Inflation will reduce the future purchasing power of the calculated amount.
- Taxes (capital gains or income) are not included in this deterministic model.