Discounted Cash Flow Pros and Cons

DCF Pros

Cash-Flow Based

DCF analyzes actual cash generated by the business, which reveals a company's true financial health better than accounting earnings.

Cash flows are harder to manipulate than earnings because they represent actual money moving in and out of the business.

While companies can adjust depreciation schedules, revenue recognition, or accrual accounting, they can't fake cash in bank accounts.

Market-Independent

DCF valuation isn't affected by short-term market sentiment or temporary price swings. This becomes valuable during market bubbles or distressed periods when comparable company valuations (comps) might be unreliable.

For instance, during the dot-com bubble, DCF analysis would have shown that many internet companies had no path to generating sufficient cash flows to justify their valuations, while during market panics it can identify solid companies trading below intrinsic value.

Self-Sufficient

DCF doesn't require pure-play comparable companies, unlike comparable company analysis (comps). This makes it useful for valuing unique business models or companies in niche industries.

When finding true comparables is nearly impossible, DCF allows investors to value companies based on expected cash flow generation.

Flexibility

With the DCF, you can adjust multiple variables like growth rates, margins, and capital expenditures to model different scenarios. This captures various potential future states and adapt analysis across industries.

This flexibility extends to:

• Modeling changing business models.
• Incorporating expansion plans and new market entries.
• Adjusting for competitive dynamics and market saturation.
• Reflecting different macroeconomic scenarios.

The ability to model multiple scenarios makes DCF adaptable to virtually any business situation.

Forward-Looking

DCF focuses on future potential rather than historical performance. This incorporates expectations about future business performance and growth opportunities directly into valuation.

Historical financials indicate where a company has been, but investing is about where it's going. DCF requires thinking about future competitive advantages, market dynamics, and growth potential rather than extrapolating the past.

Reverse DCF Capability

Reverse DCF works backwards from current stock price to understand what growth rates and assumptions the price implies. It provides a reality check on whether market expectations seem reasonable.

This capability helps investors avoid overpaying for growth and identify when market optimism has gone too far.

DCF Cons

Dependence on Financial Projections

Accurately forecasting future performance becomes increasingly difficult over longer time horizons. This is particularly challenging for early-stage companies or those without much operating history.

The further out we project, the more uncertainty compounds.

Sensitivity to Assumptions

Small changes in key inputs like growth rates, discount rate, or exit multiples can significantly impact final valuation. Your valuation is only as good as your assumptions.

Multiply this across all assumptions, and two analysts using DCF on the same company might arrive at very different values.

Terminal Value Dominance

Terminal value often represents 50-75% of total valuation. A large portion of valuation depends on long-term assumptions that are difficult to predict accurately.

Most of the company's worth comes from cash flows beyond the explicit forecast period, highlighting reliance on distant, uncertain projections.

Assumes Constant Capital Structure

The DCF assumes an unchanging mix of debt and equity financing. While this simplifies analysis, companies often adjust capital structure over time.

More specifically, companies might:

• Take on debt for acquisitions.
• Pay down debt as they mature.
• Issue equity during growth phases.
• Buyback stock when generating excess cash.

Each change affects WACC and therefore valuation, but modeling all these changes accurately adds complexity and uncertainty.

WACC Complexity

Calculating WACC requires numerous assumptions about cost of equity, cost of debt, and capital structure. Each component involves multiple methodological choices.

Decisions required include:

• Which risk-free rate to use.
• How to estimate beta (time period, frequency, adjustment methods).
• Market risk premium (historical, implied, and others).
• Credit spread approach for cost of debt.

Each choice affects the WACC and therefore valuation.

Time and Expertise Required

Building accurate DCF models requires significant time investment. The complexity creates more room for error and requires careful validation.

A comprehensive DCF requires:

• Understanding accounting and financial statements.
• Building integrated financial models.
• Calculating discount rates.
• Estimating reasonable growth rates.
• Performing sensitivity and scenario analysis.
• Validating results with reverse DCF.

The time and skill needed for proper DCF analysis often makes it impractical for casual investors.

The Bottom Line

DCF's strengths include its focus on cash flows, market independence, and flexibility in modeling scenarios.

Its main weaknesses are sensitivity to assumptions, terminal value dominance, and the time required for proper analysis. The model's limitations reflect the genuine difficulty of valuing future cash flows, requiring judgment and experience.

Despite these challenges, DCF analysis forces disciplined thinking about cash flow generation. In fact, DCF's greatest value lies in its process of explicitly modeling cash flows and testing assumptions, making investors better analysts regardless of the final valuation number.