๐ Metrics
Gross margin
How much of each sale you keep after the direct cost of making it.
Formula
Gross margin % = (Revenue โ COGS) รท Revenue
Gross margin shows how profitable the product itself is, before overheads like rent and salaries.
Software has high gross margins (70โ90%). Groceries and airlines are much lower. Comparing margins tells you what kind of business you're looking at.
๐งฎ Example
A T-shirt sells for โน800 and costs โน320 to make and ship. Gross margin = (800 โ 320) รท 800 = 60%.
๐ฏ Interview tip
If a company's gross margin falls, look at input costs or discounting before anything else.
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