Discounted Cash Flow (DCF)

Discounted Cash Flow (DCF) is a valuation method used to estimate the intrinsic value of an investment by forecasting its future cash flows and discounting them to present value. It accounts for the time value of money, where a dollar today is worth more than a dollar in the future due to its potential earning capacity. The process involves projecting free cash flows over a period, calculating a terminal value for cash flows beyond that, and applying a discount rate that reflects the investment's risk.

Investors apply DCF by forecasting a company's free cash flows for 5-10 years based on revenue growth, margins, and capital expenditures. They select a discount rate, often the weighted average cost of capital (WACC), to bring future cash flows to present value, then add a terminal value using a perpetuity growth model. The total present value is compared to the current stock price: if higher, the stock may be undervalued; if lower, overvalued. A common benchmark is aiming for a discount rate of 8-12% for stable companies, adjusting higher for riskier ones. The most common beginner mistake to avoid is using overly optimistic growth assumptions without grounding them in historical data or industry trends.

Suppose Company X generates $10 million of free cash flow next year, growing about 5% annually. Discounting the next five years of cash flows at a 10% rate gives roughly $42 million of present value. Adding the present value of a terminal value — say $78 million in today's dollars — yields an intrinsic value of about $120 million. If the company's market cap is $100 million, the DCF suggests it may be undervalued.