rule of 72

proper noun

A means of estimating an investment's doubling time. 72 is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling.

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Meanings

proper nounthe rule of 72
  1. businessA means of estimating an investment's doubling time. 72 is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling.
Cite this entry
APA

rule of 72. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/rule%20of%2072

MLA

“rule of 72.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/rule%20of%2072. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “rule of 72,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/rule%20of%2072.

Source: rule of 72 on Wiktionary, CC BY-SA 4.0.