Gross margin is what remains of revenue after the direct cost of the goods or services sold, shown as a percentage. Sell a product for 100 that cost 60 to buy or make, and the gross margin is 40, or 40%. It comes before overheads — rent, salaries of people not directly producing, marketing — so it measures whether the thing you sell makes money on its own terms, before the business around it is paid for.
It is the number that separates busy from profitable. A retailer can grow revenue 20% with a promotion and lose money doing it if the margin on promoted lines drops to 5%. A manufacturer’s margin by product line shows which products should be pushed and which quietly dropped. A professional-services firm computes it per project as fees less staff time, and the projects everyone likes are often the ones that lose.
The most common confusion is with net margin, which subtracts every cost and shows what the whole business keeps. Another is which costs count as direct: freight in, packaging, payment fees and returns are argued over in every company. Rule of thumb: decide once, write the definition down, and use the same one in every report, because a margin that is calculated three ways will be trusted zero ways.
In Klayara, gross margin is a calculated field defined once from your sales and cost data and used on every dashboard, from the finance snapshot to the store league table, with the definition visible to anyone who asks.