Discounted Cash Flow Calculator (DCF)

Written by Great Medico

Updated September 25, 2026 •2 min read

Share Print Save

Discounted Cash Flow Calculator (DCF) helps translate an investment assumption into a number you can inspect, rather than leaving the effect of compounding, fees, or risk buried in mental math.

What this calculator does

Discounted Cash Flow Calculator (DCF) discounts the entered forecast free cash flows at the chosen discount rate and compares their present value with the initial investment or enterprise value paid. That makes the output useful for the specific relationship being measured here, while keeping any unentered business or investment assumptions outside the calculation.

How to use it

Enter Currency, Initial investment or enterprise value paid, Forecast free cash flows, and Discount rate (%). Keep percentage assumptions in the units shown on the form and make sure the time unit of rates matches the term or period count. The currency selector changes display currency only; it does not perform an exchange-rate conversion. Before using the result in a decision, recheck unusually large or negative values against the source data rather than assuming the calculator is correcting an inconsistent input.

How the calculation works

Each forecast cash flow is discounted as CF_t ÷ (1+r)^t. The present values are summed and the entered initial investment or purchase amount is subtracted, producing net present value (NPV).

Example

Discounting the default five cash flows at 10% gives a present value of about $129,078.68. After subtracting the $100,000 initial amount, NPV is about $29,078.68.

How to interpret the result

Interpret the result as a modeled finance quantity, not a forecast or recommendation. Returns, rates, correlations, cash flows, fees, taxes, and market prices can change, so the most useful practice is to test a range of plausible inputs rather than treating one scenario as certain.

Limitations and notes

This DCF result depends directly on the forecast cash flows and discount rate entered. It does not independently validate the forecasts or estimate a terminal value beyond the cash flows supplied. Small changes in later cash flows or the discount rate can materially change present value, so scenario testing is more informative than relying on one point estimate.