Skip to main content
ProfitabilityGPM

What is Gross Profit Margin (GPM)?

Gross Profit Margin (GPM) is the percentage of revenue remaining after subtracting the direct costs of producing goods or services -- the cost of goods sold (COGS). It reflects a company's pricing power and competitive moat before any overhead, interest, or tax costs are applied. Warren Buffett uses sustained gross margins above 40% as one of his primary indicators of a durable competitive advantage, reasoning that only companies with genuine moats can consistently extract premium pricing from customers over decades.

Formula

Gross Margin = ((Revenue - COGS) / Revenue) x 100

Gross Margin as a Moat Signal

The logic behind Buffett's gross margin heuristic is simple: in a competitive market, new entrants will undercut pricing until margins compress toward the cost of capital. A company that sustains gross margins of 50-70% over a decade is doing so because its customers are either unable or unwilling to switch to a cheaper alternative. That "stickiness" -- born of brand loyalty, switching costs, network effects, or regulatory barriers -- is the economic moat.

Gross margin trends are often more revealing than the level. A company whose gross margins have expanded from 45% to 55% over five years is gaining pricing power relative to its cost base -- a sign of strengthening competitive position. Conversely, a company whose margins have compressed from 55% to 45% despite rising revenue may be losing pricing power or facing structural input cost inflation that it cannot pass through to customers.

Screen for High-Moat Stocks

Filter by gross margin, operating margin, and ROIC simultaneously with the ValueMarkers stock screener to find companies with Buffett-style durable competitive advantages.

Open Stock Screener →

Frequently Asked Questions

What is gross profit margin?+
Gross margin is revenue minus cost of goods sold (COGS), divided by revenue, expressed as a percentage. COGS includes direct production costs: raw materials, direct labor, manufacturing overhead. It excludes selling, general & administrative expenses (SG&A), research & development, depreciation of corporate assets, interest, and taxes. A gross margin of 60% means the company retains $0.60 of every $1.00 in sales before paying for overhead and other operating expenses.
What is a good gross profit margin?+
Benchmarks vary widely by industry. Software and pharmaceutical companies often achieve gross margins of 70-90% because their marginal cost of producing an additional unit is near zero. Consumer brand companies (think Coca-Cola or Nike) typically earn 40-65%. Manufacturing and industrial companies generally fall in the 20-40% range. Grocery chains and commodity distributors often run on 15-25% gross margins, relying on volume and asset turnover to generate returns. Any gross margin that is sustainably higher than industry peers suggests a genuine competitive moat.
What is the difference between gross margin and net margin?+
Gross margin measures profitability after only direct production costs, before SG&A, R&D, depreciation, interest, and taxes. Net margin is the bottom-line metric -- profit after all expenses including interest and taxes. A company can have a high gross margin but a low net margin if it spends heavily on R&D or has high fixed overhead costs. Net margin varies more cyclically with interest rates and tax policy, making gross margin a cleaner, more stable signal for assessing the underlying competitive strength of the core business.
Why does gross margin matter more than net margin for moat analysis?+
Gross margin reflects whether customers are willing to pay a premium over the cost to produce the product or service -- the clearest expression of pricing power. A company with structural pricing power maintains high gross margins even when input costs rise, because it can pass through cost increases to customers. Net margin, by contrast, can be temporarily depressed by high interest expense (a leverage decision), elevated R&D (an investment decision), or higher taxes (a geography decision) -- none of which diminish the underlying moat. Buffett specifically screens for gross margins above 40% as evidence that the moat is real and durable.

Related Terms

Operating Margin

Operating income as a percentage of revenue

Return on Equity

Net income relative to shareholders equity

Economic Moat

A company's sustainable competitive advantage

Free Cash Flow Yield

FCF per share as a percentage of price

Explore More

Investing Tools

Free Calculators

Learn

← Back to Glossary

Weekly Stock Analysis - Free

5 undervalued stocks, fully modeled. Every Monday. No spam.

Cookie Preferences

We use cookies to analyze site usage and improve your experience. You can accept all, reject all, or customize your preferences.