Gross margin tells you how much money a company keeps from each dollar of revenue after paying the direct costs of making its products or delivering its services. Expressed as a percentage, it reveals whether a business has enough room between its selling prices and its production costs to cover everything else: rent, salaries, marketing, interest on debt, and still turn a profit. A company with a 40% gross margin keeps 40 cents of every revenue dollar after production costs, leaving that 40 cents to fund operations and generate earnings.
How Gross Margin Is Calculated
The formula is straightforward: subtract cost of goods sold (COGS) from total revenue, then divide that result by total revenue. Multiply by 100 to get a percentage.
COGS includes the expenses tied directly to producing what the company sells: raw materials, factory labor, manufacturing overhead like equipment depreciation, and shipping costs to get products to a warehouse. It does not include rent on the corporate office, the CEO’s salary, advertising spending, or interest on loans. Those show up further down the income statement.
If a furniture maker brings in $2 million in revenue and spends $1.2 million on lumber, hardware, factory wages, and production equipment, its gross profit is $800,000 and its gross margin is 40%. That number by itself won’t tell you if the company is profitable overall, but it tells you a lot about what’s happening at the production level.
What a High Gross Margin Signals
A high gross margin means the company produces goods or services at a relatively low cost compared to what it charges. This can indicate several things. The business may have strong pricing power, meaning customers are willing to pay a premium. It may have negotiated favorable deals with suppliers. Or it may operate in an industry where the product itself is inexpensive to create, like software, where the marginal cost of serving one more customer is close to zero.
Software companies routinely carry gross margins above 60%. System and application software firms average around 72%, while internet software companies sit near 63%, according to data compiled by NYU Stern. Compare that with auto and truck manufacturers, which average roughly 10%, or basic chemical producers at about 9%. The gap reflects how different industries work: writing code once and distributing it digitally costs far less per unit than stamping steel and assembling vehicles.
What a Low or Falling Gross Margin Reveals
A low gross margin means production costs consume most of the revenue, leaving little room to pay for everything else. That’s not automatically a problem if the business model relies on high volume and thin margins, as grocery retailers do (their average gross margin is about 26%). But if gross margin is falling over time, something is changing for the worse.
A declining gross margin can point to rising material costs, higher factory labor expenses, or pricing pressure from competitors forcing the company to cut prices. When a business sees its margin shrinking, the typical responses are to renegotiate supplier contracts, find cheaper materials, reduce labor costs, or raise prices. Each option carries trade-offs. Raising prices can push customers toward substitutes. Cutting material costs can affect product quality. Tracking the trend over several quarters helps distinguish a temporary spike in input costs from a structural problem.
Comparing Companies Within an Industry
Gross margin is most useful when you compare companies that do similar things. A semiconductor firm averaging 59% and a steel producer averaging 12% aren’t in the same competitive universe, so comparing their margins tells you nothing about which is better managed. But comparing two semiconductor companies, or two grocery chains, highlights which one controls production costs more effectively or commands stronger pricing.
Here are some representative industry averages to give you a sense of what “normal” looks like across sectors:
- Software (system and application): roughly 72%
- Semiconductors: roughly 59%
- Healthcare products: roughly 54%
- Computers and peripherals: roughly 38%
- Machinery: roughly 37%
- General retail: roughly 33%
- Food processing: roughly 23%
- Aerospace and defense: roughly 17%
- Auto and truck manufacturing: roughly 10%
A company sitting well above its industry average likely has a cost advantage or a brand that supports premium pricing. One sitting well below may be struggling with inefficient production, unfavorable supplier terms, or a product line that customers won’t pay much for.
How Business Owners Use Gross Margin
If you run a business, gross margin is one of the first numbers to check when profits feel thin. It isolates the production side of your operation from everything else. If your gross margin is healthy but your bottom line is weak, the problem is overhead: too much spent on office space, administrative staff, or marketing. If your gross margin itself is low, the problem starts earlier, with what it costs to make or source your product.
Tracking gross margin by product line can be even more revealing. You might find that one product earns a 55% margin while another barely breaks 15%. That information can drive decisions about which products to promote, which to redesign, and which to discontinue. Better spending visibility also strengthens your position when renegotiating vendor contracts, because you can point to specific cost data rather than general feelings about prices being too high.
What Gross Margin Does Not Tell You
Gross margin only accounts for production costs. It ignores selling expenses, administrative overhead, research and development, interest payments, and taxes. A company can have an impressive 60% gross margin and still lose money if it spends heavily on marketing campaigns, carries expensive debt, or employs a large corporate staff.
That’s why analysts look at gross margin alongside net profit margin, which factors in all expenses. When the gap between gross margin and net margin is large, it means the company spends a significant share of revenue on costs beyond production. That could be intentional, like a tech startup investing heavily in growth, or it could signal bloated overhead. Either way, gross margin alone won’t give you the full picture.
Gross margin also doesn’t account for how efficiently a company uses its assets or how much capital it needs to operate. Two companies with identical gross margins can look very different once you factor in how much inventory each one ties up or how quickly each collects payment from customers. Think of gross margin as a critical first layer of analysis, not the final word on financial health.