A mathematical figure that shows the present value of an income stream that generates one dollar of income each period for a specified number of periods.
Example: Collins is to receive $1,000 each year for 10 years for rental of her land. To value this income, she used an
annuity factor at a 10% rate that is 6.144. The estimated rent has a present value of $6,144 (6.144 ¥ $1,000).
1 1 – –—— (1 +
i) Annuity factor = ––––––––––
i where
i is the periodic interest rate in decimal form and
n is the number of periods that the income stream will last.