Valuation is often described as a bridge between the present and an uncertain future. Once you have successfully projected a company’s Unlevered Free Cash Flows (UFCF), you have essentially mapped out the "fuel" the business generates. However, a pile of cash expected five years from now is not worth the same as a pile of cash sitting on your desk today. This discrepancy is driven by the "time value of money" (TVM), which suggests that a dollar today is worth more than a dollar tomorrow because today’s dollar can be invested to earn a return . To account for this, analysts use a "discount rate" to pull those future cash flows back into today’s terms. In the world of corporate valuation, that discount rate is most commonly the Weighted Average Cost of Capital (WACC) .

The WACC represents the average rate a company expects to pay its capital providers—both the banks that lend it money and the shareholders who buy its stock . It is a vital metric because it reflects the risk of the investment. A higher WACC indicates a riskier business, as investors demand a greater return to compensate for the uncertainty of the company’s future . Conversely, a lower WACC suggests a stable, healthy business that can attract capital more cheaply . Without a properly calculated WACC, your valuation is essentially a house without a foundation; you might know how much cash is coming in, but you have no way of knowing what that cash is actually worth to an investor today.

However, most businesses do not simply cease to exist after a five-year forecast period. They are "going concerns," meaning they are expected to operate indefinitely . Since it is impossible to forecast specific line items like "office supplies expense" for the year 2085, analysts use a concept called "Terminal Value" (TV) to capture the value of the business beyond the explicit forecast window . Terminal Value often accounts for a massive portion—sometimes 60% to 80%—of a company’s total assessed value . It represents the "long run" of the business, assuming that after the initial period of high growth or volatility, the company will settle into a steady state of maturity.

There are two primary ways to calculate this "forever" value: the Perpetual Growth Method and the Exit Multiple Method . The Perpetual Growth Method, often associated with the Gordon Growth Model, assumes the business will grow at a constant, stable rate forever . The Exit Multiple Method assumes the business will be sold at the end of the forecast period for a multiple of a financial metric, such as EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) . While academics often prefer the theoretical elegance of perpetual growth, investment professionals frequently lean toward exit multiples because they reflect how the market actually prices acquisitions .

This chapter serves as the final assembly line for your valuation model. By blending the WACC (the risk-adjusted discount rate) with the Terminal Value (the long-term horizon), you can calculate the "Intrinsic Value" of the firm. This is the "true" value of the business based on its fundamentals, independent of its current market price . By comparing this intrinsic value to the current market price, an investor can determine if a stock is undervalued (a potential buy) or overvalued (a potential sell) .

Concept	Definition	Role in Valuation
Discount Rate	The interest rate used to determine the present value of future cash flows .	Adjusts for risk and the time value of money.
WACC	The weighted average of the cost of debt and the cost of equity .	Serves as the standard discount rate for a firm.
Terminal Value	The estimated value of a business beyond the forecast period .	Captures the "infinite" life of a going concern.
Intrinsic Value	The perceived value based on future earnings and fundamentals .	The "target" price an analyst seeks to find.

Understanding these concepts requires a shift in mindset from simple accounting to financial strategy. You are no longer just looking at what happened in the past; you are weighing the cost of the money used to build the future. As we dive deeper into the mechanics of WACC and the nuances of Terminal Value, remember that these are not just formulas—they are numerical representations of a company’s risk, its competitive standing, and its ultimate longevity in the marketplace.