Number of payments(given felix`s corollary to the rule of 72 and periodic payment amount)

Formula

Number of payments(given felix`s corollary to the rule of 72 and periodic payment amount) formula
N
number of payments
T
total ending balance
P
periodic payment amount

Formula description

In finance, the rule of 72, the rule of 70 and the rule of 69 are methods for estimating an investment's doubling time. Felix`s Corollary provides a method of approximating the future value of an annuity (a series of regular payments), using the same principles as the Rule of 72.

Calculator (how to use calculator?)

Number of payments(given felix`s corollary to the rule of 72 and periodic payment amount) formula
T
P
N
Precision

Formula code

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References

  1. Wikepedia:Felix`s Corollary to the Rule of 72.

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