Divide 72 by a positive annual percentage rate to estimate doubling time. At a hypothetical 6% annual rate, the shortcut gives approximately 12 years.
The shortcut assumes a constant rate. It is not a forecast, and its accuracy varies with the rate and compounding convention.
Questions worth considering
- The shortcut is undefined at a zero rate.
- It excludes taxes, fees, contributions, and withdrawals.
- It can also illustrate rising prices or debt costs.
For general education only. These materials do not provide personalized investment, insurance, tax, or legal advice. Actual outcomes vary, and investments may lose value.