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📐 Discount Rate Calculator

Calculate the implied discount rate between a present and future value, or use a known rate to find present value.

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What is a discount rate?

A discount rate reflects the rate of return used to convert a future sum of money into its equivalent value today (present value), accounting for the time value of money and investment risk.

The formula

Discount Rate = (Future Value / Present Value)^(1/Years) − 1. This is the annualized rate that connects a known present value to a known future value over the given time period, the same relationship used in reverse to calculate present value from a chosen discount rate.

This calculator is for general financial education and analysis practice, not investment advice. The appropriate discount rate to use in real analysis depends on risk, opportunity cost, and the specific context (e.g., corporate WACC, personal required return).

Last reviewed August 2026