When comparing firms, which profitability margin matters most?

Question

AcadiFi · Accepted Answer

Each margin answers a different question. Using only one leads to misjudgment; use them in sequence to triangulate. Gross margin isolates pricing power and input cost efficiency. It is strongly correlated with brand strength and scale advantages. For consumer products, a sustained 60%+ gross margin generally signals a moat. Operating margin (EBIT / revenue) adds SG&A and depreciation discipline. It captures the full cost structure excluding financing and tax. It is the purest measure of operating profitability for cross-firm comparison because capital structures differ. EBITDA margin removes depreciation and is useful for capital-intensive industries where accounting lives differ. But it is not a free cash proxy — always reconcile to operating cash flow. Net margin reflects all factors including tax and interest. It is meaningful when capital structures and tax rates are comparable, which is rare across borders. ```mermaid flowchart TD A[Revenue
100%] --> B[Gross
Margin] B --> C[Operating
Margin] C --> D[EBITDA
Margin] D --> E[Net
Margin] ``` For Harborline Software with 78% gross, 24% operating, 35% EBITDA, 20% net — the gap between EBITDA and operating flags heavy D&A, typical for capitalized R&D. Always investigate the biggest delta between adjacent margins; that is where the economic story lives.

When comparing firms, which profitability margin matters most?

Master Level II with our CFA Course

Related Questions

Practice Questions