Gross Profit Shows What Sales Leave Before Overhead Arrives
A boutique owner rings up a $100 sweater and smiles — then remembers the wholesaler charged her $60 for it. Rent, payroll, and the card reader all have to live on the $40 that's left.
Gross profit is revenue minus the direct cost of the goods or services sold. It's the first cut of profit — the money left to cover everything else the business pays for.
The formula and a quick example
A retailer books $1 million of revenue against $650,000 in cost of goods sold. Gross profit is $350,000.
Divide that by revenue and you get a gross margin of 35% — thirty-five cents survive from each sales dollar before overhead shows up. That percentage view, the first member of the profit margin family, makes companies of different sizes comparable.
What it doesn't include
Office salaries, rent, software, advertising, insurance, interest, and taxes all land below the gross profit line. A fat gross profit can still end in a net loss once those bills arrive.
That's why gross profit answers one narrow question: whether selling the product costs less than customers pay for it. What happens next belongs to operating profit and the lines below it.
Why the number moves
Product mix shifts it without any price change. Sell more high-margin services and fewer low-margin goods, and company-wide gross margin climbs even though each item's economics stayed put.
Supplier prices, discounts, inventory write-downs, and production efficiency push it around too. A falling margin is a clue, not a verdict — the cause still has to be found.
Compare with care
One company tucks fulfillment or hosting costs into cost of sales; a rival parks similar costs in operating expenses. Their gross margins will look different even if their businesses aren't.
Within one company over time, though, the trend is telling. A steady slide in gross margin usually means pricing power or production costs are moving the wrong way.
For where these lines sit in a real filing, see the SEC's guide to reading a 10-K.
Before comparing two companies' gross margins, check what each one buries in cost of sales.