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Rule of 72: What it is and how to use it

Here’s how the Rule of 72 works: Divide 72 by your expected annual interest rate (as a percentage, not a decimal). The answer is roughly the number of years it will take for your money to double. For ...

What Is the Rule of 72 and How Can Investors Use It?

The Rule of 72 is an easy way to calculate how long it will take your investment to double in value. Here's how it works.