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Calculadoras

Calculadora de Juros Compostos

Calculadora gratuita de juros compostos. Projete o valor futuro com contribuições mensais e qualquer frequência de capitalização. Para poupanças, investimentos, reforma.

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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.

Nota do editor

Understanding · Money that earns money.

Este capítulo aprofundado está disponível apenas em inglês no momento. A ferramenta de conversão acima funciona no seu idioma; o artigo explicativo longo ainda não foi traduzido.

Perguntas frequentes

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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