Gross profit margin measures the percentage of revenue remaining after subtracting the direct cost of producing the goods or services sold. It is calculated by dividing trailing twelve-month gross profit by trailing twelve-month revenue. Gross margin reveals the fundamental profitability of a company's products or services before overhead, sales, research, and administrative expenses are considered.
A company with a 60% gross margin retains 60 cents of every revenue dollar after production costs. This is the first and most important margin in the income statement hierarchy because it defines the maximum profit potential from the core product before all other expenses eat into it.
Gross margins vary enormously by industry. Software companies routinely achieve 70-90% gross margins because digital products have near-zero marginal cost. Manufacturing companies typically range from 20-40%. Grocery and commodity businesses may operate with margins in the single digits.