Profit Margin

Profit margin (also called net profit margin or net margin) measures the percentage of revenue that becomes bottom-line profit after all expenses—operating costs, interest, taxes, and any other charges. This comprehensive profitability metric represents the ultimate efficiency of a business in converting sales into returns for shareholders.

The calculation:

Profit Margin = Net Income / Revenue × 100%

For example, if a company generates $50 million in revenue and reports $5 million in net income, its profit margin is 10%. For every $1 of sales, $0.10 reaches shareholders as profit.

Typical profit margin ranges by sector:

• Software: 15-35%; high gross margins often translate to strong net margins
• Banks: 20-30%; spread-based business model
• Healthcare: 5-15%; varies widely by subsector
• Consumer goods: 5-15%; competitive markets limit pricing
• Retail: 2-5%; thin margins on high volume
• Airlines: 0-5%; extremely cost-sensitive, cyclical

What affects profit margin:

• Gross margin: Sets the upper limit of potential profitability
• Operating efficiency: SG&A and R&D spending relative to revenue
• Interest expense: Leverage costs reduce net margin
• Tax rate: Varies by jurisdiction and tax strategy
• One-time items: Can significantly distort margin in any given period

Critical analytical points:

• Margin expansion: Improving margins often drive stock outperformance
• Sustainability: Consider whether current margins can be maintained under competitive pressure
• Margin vs. growth trade-off: Some companies sacrifice margin to gain market share
• Adjusted margins: Be cautious of non-GAAP adjustments that inflate reported margins

Compare profit margins to a company's own history and its closest peers. A margin significantly above industry average may attract competition, while a margin well below peers demands explanation. Also consider the margin in context of the business cycle—cyclical companies show high margins at peaks and low (or negative) margins in troughs.