When would you not use a DCF?

When would you not use a DCF?

• A. When the company has unstable or unpredictable cash flows (e.g., tech or biotech startups).
• B. When the company is a bank or financial institution where debt and working capital serve a different role.
• C. When the company has stable cash flows and predictable debt.
• D. When there are many comps available.

Answer: (A)

A DCF relies on forecasting future cash flows with enough confidence that discounting them provides a meaningful value. When cash flows are unstable or unpredictable, as with tech or biotech startups whose revenues and margins swing with product development, regulatory outcomes, or market adoption, those forecasts become highly uncertain. Small changes in assumptions about growth, timing, margins, or the terminal value can drastically change the present value, making the DCF result unreliable. In such situations, analysts prefer other methods that don’t depend on a single long-range forecast, like comparable company analyses or scenario-based approaches that better reflect the range of possible outcomes. While other notes—such as the fact that financial institutions have different cash-flow and regulatory dynamics—are real considerations, the fundamental reason not to rely on a DCF here is the lack of dependable cash-flow projections. In their place, you’d use alternatives that capture value without forcing a precise long-term forecast.

A DCF relies on forecasting future cash flows with enough confidence that discounting them provides a meaningful value. When cash flows are unstable or unpredictable, as with tech or biotech startups whose revenues and margins swing with product development, regulatory outcomes, or market adoption, those forecasts become highly uncertain. Small changes in assumptions about growth, timing, margins, or the terminal value can drastically change the present value, making the DCF result unreliable. In such situations, analysts prefer other methods that don’t depend on a single long-range forecast, like comparable company analyses or scenario-based approaches that better reflect the range of possible outcomes.

While other notes—such as the fact that financial institutions have different cash-flow and regulatory dynamics—are real considerations, the fundamental reason not to rely on a DCF here is the lack of dependable cash-flow projections. In their place, you’d use alternatives that capture value without forcing a precise long-term forecast.