El Mono Inversor
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📈 How much will I have?

If you invest a fixed amount every month for years, compound interest makes your money grow faster and faster. Enter your numbers: results update instantly and nothing is sent to any server.

Result

Total contributed
Interest earned
Final capital
% of the final capital that is interest

Monthly compounding on the initial deposit and the monthly contributions. Interest earned = final capital − total contributed. If you use a return that's already net of inflation (real, not nominal), the figures come out in today's euros, with the same purchasing power. That's easier to interpret than a nominal figure many years from now.

Year-by-year growth

Contributed Interest earned

Have a specific savings goal instead of a final capital in mind?

⏱️ How long will it take me?