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$10,000 invested at 7% for 40 years

Future value

$149,745

Interest earned

$139,745

Total growth

1,397.45%

Investing $10,000 at 7% compounded annually for 40 years grows to $149,745. That's $139,745 of compound interest earned on your original $10,000.

FV = $10,000 × (1 + 7%)^40

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