Also called the Present Value of One or PV Factor, the Present Value Factor is a formula used to calculate the Present Value of 1 unit n number of periods into the future. The PV Factor is equal to 1 ÷ (1 +i)^n where is the rate (e.g. interest rate or discount rate) and n is the number of periods.

So for example at a 12% discount rate, $1 USD received five years from now is equal to 1 ÷ (1 + 12%)^5 or $0.5674 USD today. The PV Factor can be used to calculate the Present Value of a future stream of cash flows by multiplying each period’s cash flow by the given PV Factor for that year and then summing the resulting values.

The PV Factor is the inverse of the related FV Factor or Future Value Factor.

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