A formula that calculates the number of years it will take to double your money at various interest rates. To use the rule of 72, divide 72 by the interest the investment returns. The answer will be the number of years before the money doubles.

# rule of 72 - Investment & Finance Definition

Webster's New World Finance and Investment Dictionary Copyright © 2010 by Wiley Publishing, Inc., Indianapolis, Indiana.

Used by arrangement with John Wiley & Sons, Inc.

Used by arrangement with John Wiley & Sons, Inc.

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