Compound Interest Calculator
Visualize the power of time and reinvestment in your index portfolio.
💡 At 7% annual return (global market historical average), €10,000 grows to over €76,000 in 30 years — without touching it.
Read the full guide: what compound interest is, the formula and FAQYear by year table
| Year | Contributed | Interest | Total |
|---|---|---|---|
| 1 | 13.600 € | 841 € | 14.441 € |
| 2 | 17.200 € | 2002 € | 19.202 € |
| 3 | 20.800 € | 3508 € | 24.308 € |
| 4 | 24.400 € | 5383 € | 29.783 € |
| 5 | 28.000 € | 7654 € | 35.654 € |
| 6 | 31.600 € | 10.349 € | 41.949 € |
| 7 | 35.200 € | 13.500 € | 48.700 € |
| 8 | 38.800 € | 17.138 € | 55.938 € |
| 9 | 42.400 € | 21.299 € | 63.699 € |
| 10 | 46.000 € | 26.022 € | 72.022 € |
| 11 | 49.600 € | 31.346 € | 80.946 € |
| 12 | 53.200 € | 37.316 € | 90.516 € |
| 13 | 56.800 € | 43.977 € | 100.777 € |
| 14 | 60.400 € | 51.380 € | 111.780 € |
| 15 | 64.000 € | 59.578 € | 123.578 € |
| 16 | 67.600 € | 68.629 € | 136.229 € |
| 17 | 71.200 € | 78.595 € | 149.795 € |
| 18 | 74.800 € | 89.542 € | 164.342 € |
| 19 | 78.400 € | 101.540 € | 179.940 € |
| 20 | 82.000 € | 114.665 € | 196.665 € |
Methodology
Compound interest calculator with regular contributions
Explore how starting capital, regular contributions, time and an assumed return affect a simulated balance. Compare contributions with simulated growth.
Without contributions, €1,000 at a constant 5% for ten years becomes about €1,628: 1,000 × 1.05¹⁰. This example excludes fees, taxes and inflation; actual returns vary.
Published:
LearnAImarkets · Methodology
Methodology: Educational content with illustrative assumptions. Calculators do not forecast returns. Change the inputs to explore different scenarios. Methodology
Educational information, not investment advice. Investing involves risk of loss.