Enter the annual return (APY %) into the calculator to determine the number of years it will take for an investment to triple.
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Rule Of 115 Formula
The following formula is used to estimate the number of years it will take for an investment to triple using the Rule of 115.
Y = 115 / r
Variables:
- Y is the approximate number of years it will take for the investment to triple
- r is the annual interest rate (percentage)
To estimate the number of years it will take for an investment to triple, divide 115 by the annual interest rate. The result is approximately the number of years it will take for the investment to triple.
What is a Rule Of 115?
The Rule of 115 is a quick and simple way to estimate when an investment will triple given a specific annual return. To use the rule, you divide 115 by the annual interest rate (in percent). The result is an approximate number of years it will take for the investment to triple, assuming the rate represents an effective annual return (APY).
How to Calculate Rule Of 115?
The following steps outline how to calculate the Rule of 115.
- First, determine the annual interest rate (r) as a percentage.
- Next, divide 115 by the annual interest rate (r) to calculate the number of years (Y) it will take for the investment to triple.
- Finally, calculate the Rule of 115.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem:
Use the following variables as an example problem to test your knowledge.
Annual interest rate (r) = 5%
Number of years (Y) = ?
