Compound Interest Calculator

Project investment growth over time with monthly contributions. See the power of compounding and inflation-adjusted returns.

728x90 · Finance placement · Est. CPM $20-$48

Initial deposit ($)

Monthly contribution ($)

Annual interest rate (%)

Years to grow

Compound frequency

Inflation rate (%)

Final balance

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Total deposited

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Interest earned

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Inflation-adjusted

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Return multiple

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Monthly income (4% rule)

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336x280 · Finance/Insurance · Est. CPM $22-$48

Frequently asked questions

What is compound interest?

Compound interest earns interest on both your principal and accumulated interest. Over time this creates exponential growth.

What return can I expect from investments?

The S&P 500 has averaged approximately 10% annually before inflation, 7% after, over long periods.