Glossary term
Present value
Present value is the estimated current value of a future amount after discounting it at a stated rate for a stated period.
Plain meaning
What present value means
Present value answers a timing question: what would a future amount be worth today if a discount rate is applied? A higher discount rate usually lowers the present value. A longer time period usually lowers it as well.
Formula role
How OpenBook uses it
Present value is usually an output in OpenBook calculators. It is calculated from a future amount or cash-flow stream, a time period, a discount rate, and the calculator's timing convention.
It is the backward-looking counterpart to future value. Future value compounds money forward; present value discounts future money back to the calculation date.
The calculation depends heavily on the discount rate. The rate is an assumption, not a guarantee or recommendation.
Common limit
What it does not show
A present value result does not prove that an investment, pension option, project, or purchase is better. It is a mathematical estimate under the entered rate, timing, and cash-flow assumptions.