Calculate compound interest
See how your capital grows over time when you reinvest your returns. Compound interest is the single most powerful force in investing.
What is compound interest?
Compound interest means that the returns from an investment are reinvested, so you earn returns on previous returns as well. The effect becomes exponential over time and is one of the most powerful forces in long-term investing.
How is it calculated?
The compound interest formula is: Final value = Starting capital × (1 + r)^n where r is the rate per period and n is the number of periods. If you make monthly deposits, these are added before next month's interest is calculated.
Practical example
With 1,000 EUR starting capital and 3% monthly return over 24 months, your capital grows to approximately 2,033 EUR — an increase of over 100%. With higher returns or a longer time horizon, the effect becomes dramatic.
Realistic expectations
3-5% monthly return is ambitious but achievable for a disciplined trader or a verified algorithmic strategy. Remember that returns are never guaranteed and past performance does not predict future results.
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