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Calculatrices

Calculateur d'Intérêts Composés

Calculateur d'intérêts composés gratuit. Projetez la valeur future avec des contributions mensuelles et toute fréquence de capitalisation. Pour l'épargne, l'investissement, la retraite.

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From a deposit and a habit to a future balance.

Compounding can pile up fast. The future value uses the chosen schedule for the lump and monthly compounding for the contribution stream.

Note de la rédaction

Understanding · Money that earns money.

Ce chapitre approfondi n'est actuellement disponible qu'en anglais. L'outil de conversion ci-dessus fonctionne dans votre langue ; le long article explicatif n'a pas encore été traduit.

Questions fréquentes

Quick answers.

What is compound interest?

Interest earned on both your original principal and previously earned interest. Each period the base grows, so the next period's interest grows too.

Monthly vs annual compounding — does it matter?

Yes, but the difference is small at typical rates. Monthly compounding at 5% APR = ~5.12% effective annual yield.

How is this different from APY?

APY = annual percentage yield, the effective rate after compounding. APR is the nominal rate before compounding. Both are useful when comparing accounts.

Does it model taxes?

No — outputs are gross. Tax-advantaged accounts (Roth IRA, ISA) keep gains tax-free; taxable accounts pay annual tax.

Is the calculator free?

Yes — free, no signup, runs in your browser.

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