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Compound Interest Calculator

See how your money grows with the power of compounding

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Future Value
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in 20 years
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Initial Amount
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Total Contributions
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Interest Earned
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Inflation-Adj. Value
GROWTH BY DECADE

The Power of Compound Interest

Albert Einstein reportedly called compound interest the "eighth wonder of the world." Your money earns returns, and those returns also earn returns — creating exponential growth over time.

A = P(1 + r/n)^(nt)

A = Final amount, P = Principal, r = Annual rate,
n = Compounds/year, t = Time in years

Why Time is Your Most Valuable Asset

Starting early makes a massive difference. Investing $200/month from age 25 at 8% leaves you with roughly 2× more than starting at 35, even with the same contribution amount. Start today.