Understanding companies
A profit margin expresses a defined profit as a percentage of revenue. It shows how much of each revenue unit remains at that stage of the income statement.
Make it click
For every pound entering a till, colour the part remaining after a named set of costs. Changing the costs included changes the size and meaning of the coloured slice.
Now put that into markets
Gross, operating and net margins divide different profit lines by revenue. They help compare scale and change, but only when definitions are compatible.
Margins move with prices, volumes, mix, input costs, productivity and accounting classification. Operating leverage can make profit change faster than revenue when fixed costs are significant.
Compare the same margin over several periods and with relevant peers. Look for volume, price and one-off explanations rather than treating every movement as lasting.
High margin is not automatically high quality or good value. Capital needs, competition, cyclicality and cash conversion can make similar margins worth different amounts.
Takeaway
