Terminal Value Myth 2: As g approaches r, it is to Infinity and beyond!

Aswath Damodaran, a renowned valuation expert from NYU Stern, addresses a critical misconception in financial modeling: the behavior of terminal value calculations in perpetual growth models as the growth rate (g) approaches the discount rate (r). The episode uses a Toy Story reference (Buzz Lightyear's "to infinity and beyond") to illustrate how analysts often misunderstand what happens when growth rates creep toward discount rates—the terminal value doesn't smoothly increase but rather explodes unpredictably before potentially imploding. This is a technical deep-dive into valuation theory, specifically debunking what Damodaran calls "Myth 5.2" in his broader series on valuation myths. The core issue is that many practitioners, particularly those new to the perpetual growth model, fail to grasp the mathematical constraints embedded in the formula and the real-world limits on sustainable growth. Damodaran explains why he uses the risk-free rate as a practical cap on the growth rate in terminal value calculations—a constraint grounded in economic reality rather than mathematical convenience. The episode appears to be relatively short (14 minutes), suggesting a focused, targeted explanation rather than a comprehensive tutorial. Supporting materials include detailed slides and a blog post that likely provide the mathematical proofs and additional context. The episode targets financial analysts, valuation professionals, and students of corporate finance who use discounted cash flow (DCF) models. It addresses a genuine pain point in valuation work: the instability and unreliability that emerges when growth assumptions approach discount rates, which can lead to wildly inflated or nonsensical valuations. By establishing the risk-free rate as a practical boundary, Damodaran offers both theoretical justification and practical guidance for avoiding this common pitfall.

Verdict: A technically sound, credible deep-dive into a real valuation pitfall with immediate practical application, though its narrow scope and brevity limit broader appeal.

Business rubric

• Actionable takeaways 4/5 20%

  Provides a specific, implementable rule (cap growth rate at risk-free rate) that listeners can immediately apply to their valuation models.

• Evidence over hype 4/5 20%

  References mathematical constraints and economic logic; supporting slides and blog post likely contain proofs and data, though the episode description itself doesn't detail specific numbers or case studies.

• Guest and host credibility 5/5 15%

  Aswath Damodaran is a globally recognized valuation expert and professor at NYU Stern with decades of direct experience in corporate finance and DCF modeling.

• Substance 4/5 15%

  Focuses tightly on one specific, non-obvious valuation concept with mathematical rigor; 14 minutes suggests dense content without filler, though brevity limits depth.

• Delivers on its title 5/5 15%

  Title promises to debunk the myth that growth approaching discount rate leads to infinite value; episode directly addresses this misconception and explains the constraint.

• Value for time 4/5 15%

  14 minutes is tight for a technical topic; likely well-paced for the specific myth being addressed, though some listeners may want more worked examples.

How we score Business

Worth it if you build DCF models, teach valuation, or want to understand why terminal value calculations can blow up when growth rates approach discount rates.

Based on the episode description. AI-generated; it can be wrong.