Profitability ratio showing the share of revenue left after direct costs and highlighting unit economics.
Gross margin is gross profit expressed as a percentage of revenue. It shows how much of each sales dollar remains after covering the direct costs of producing or delivering what the company sells.
The formula is:
If a company earns $100 of revenue and keeps $40 after direct costs, gross margin is 40%.
Gross margin is one of the clearest indicators of underlying business economics.
It helps answer questions such as:
how much pricing power does the company have?
how efficient is production or service delivery?
how much room is left to cover operating expenses?
Investors watch gross margin because strong margin structure can support resilience, reinvestment, and long-term profitability.
Gross profit is the dollar amount.
Gross margin is the ratio.
That difference matters:
gross profit shows scale
gross margin shows efficiency and economic quality
A large company may report huge gross profit in dollars but have weaker margins than a smaller, more efficient business.
Gross margin can change because of:
changes in input costs
pricing pressure
product mix
supply-chain issues
discounting or promotions
That is why trend analysis is often more useful than a single-period number.
A high gross margin can be attractive, but it does not automatically make a business strong.
Investors still need to ask:
are operating expenses under control?
is demand durable?
is the margin sustainable?
is the company reinvesting enough?
High gross margin is a great starting point, not a final conclusion.
Operating margin goes further by accounting for operating expenses beyond direct costs.
That means:
gross margin focuses on core unit economics
operating margin focuses on overall operating efficiency
A company can have strong gross margin but weak operating margin if overhead is bloated.
Gross Profit: The dollar amount underlying gross margin.
Operating Margin: A lower-level profitability ratio after operating expenses.
Operating Income: The profit figure used in operating-margin analysis.
Revenue: The denominator in the gross-margin calculation.
EBITDA: Another measure used to evaluate operating performance.