Compound Interest Calculator

Calculate the maturity value of a deposit or investment when interest is added to the balance and itself earns interest.

Maturity value
Interest earned
Effective annual rate

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How it works

With compounding, each period's interest is added to the balance, so the next period earns interest on a larger amount. The more often interest compounds, the higher the effective annual rate.

This is a mathematical illustration with a fixed rate and no tax. Actual returns depend on the product's terms, tax on interest and, for market-linked investments, performance that isn't guaranteed.

A = P × (1 + r/m)^(m × t)
Effective annual rate = (1 + r/m)^m − 1

Worked example

₹1,00,000 at 7% a year compounded quarterly for 5 years grows to 1,00,000 × (1 + 0.07/4)^20 = ₹1,41,478, earning ₹41,478 of interest. The effective annual rate is 7.19%.

Frequently asked questions

What's the difference between simple and compound interest?

Simple interest is calculated only on the original amount. Compound interest is also calculated on interest already earned, so it grows faster over time.

How often do Indian bank fixed deposits compound?

Many banks compound FD interest quarterly, but check your bank's terms. Choose 'Quarterly' here to match.

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