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Gross Margin: The First Number That Tells You What Kind of Business You're Looking At

Reading Financial Statements • Beginner Investing • 6 min

What this lesson is about

One percentage, calculated in seconds, that instantly reveals more about a business's fundamental economics than almost any other single figure.

2 parts · a quick check after each · then the quiz

Part 1 of 2

Gross margin is simple to calculate. It's revenue minus the cost of goods sold, divided by revenue. This number reveals a lot about any company. It shows the basic economics of a product or service, before considering other expenses. It answers a crucial question: after covering direct production costs, how much of each revenue dollar is left to pay for R&D, marketing, administrative costs, and profit?

Gross margin varies significantly by business model. Software companies often boast high gross margins, usually between 70% and 90% or more. That's because delivering another copy of a product costs very little. In contrast, grocery retailers and commodity manufacturers typically have lower gross margins. They need to physically buy and deliver each additional unit sold. This isn’t about which company is better run; it’s a structural difference in their business models.

Down the income statementRevenue is not profit. Watch what each cost takes out of it.

Quick check

How is gross margin calculated?

Part 2 of 2

Insider Angle: The trend in gross margin over time is often more telling than its absolute level at any one moment. If gross margin steadily shrinks over several quarters while revenue continues to grow, it can signal rising input costs, increasing competition leading to price cuts, or a shift towards lower-margin products. These shifts often show up in numbers long before they’re discussed in an earnings call. Since gross margin is at the top of the income statement, changes there impact every profitability metric below it.
Try This: Choose two companies from different industries, like a software company and a retailer. Calculate each company's gross margin from its latest income statement. Compare the results and investigate how the differences in their business models account for the gap.

Quick check

What does gross margin specifically exclude that operating margin and net margin do include?

Quiz

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