Gross Margin
Gross margin is revenue minus the direct costs of producing what was sold (cost of goods sold), expressed as a percentage of revenue. It measures what the product itself earns before the costs of running the company: sales, administration, research, marketing.
The math
2 billion dollars of revenue against 1.2 billion of production costs leaves 800 million of gross profit: a 40 percent gross margin. Every point matters downstream, because gross profit is the budget that must fund everything else.
At 40 percent, a company keeping operating costs at 25 percent of revenue nets a 15 percent operating margin; the competitor producing at a 30 percent gross margin runs out of room before it runs out of bills.
| Company | Competitor | |
|---|---|---|
| Gross margin | 40% | 30% |
| Operating costs | 25% of revenue | 25% of revenue |
| Operating margin | 15% | 5% |
The trap
Ignoring the trend. A gross margin sliding two or three points over a few years is one of the earliest visible signs of eroding pricing power: competitors undercutting, customers negotiating harder, input costs that can no longer be passed through.
It shows up quarters before the damage reaches the bottom line, and it rarely reverses on its own.
The move
Read gross margin as a pricing power gauge: stable or rising through inflationary periods signals a product customers will not trade down from, which is moat evidence in numeric form. Compare only within an industry, and when a company’s gross margin sits far above peers, find the specific reason before trusting it; when it sits far below, do not assume management can simply fix it.