Margin measures the difference between selling price and cost as a share of selling price. Markup measures that same difference as a share of cost. Confusing them can make a reseller quote look more profitable than it is. Use clearly labelled arithmetic examples and include the actual relevant costs when making a business decision.
Write the formulas beside the result
For price P and cost C, simple gross margin is (P − C) ÷ P. Markup is (P − C) ÷ C. These formulas answer different questions even though the cash difference is identical.
Define which costs are included
A calculation using only credit acquisition cost omits payment fees, support time and other expenses. Label it accordingly. Do not call the result net profit when it excludes operating costs and any applicable tax treatment.
Avoid guaranteed earnings claims
A hypothetical price and cost do not establish actual demand or profitability. Keep examples educational and review the complete business model before setting terms. A lower pack unit cost alone is not proof of a viable resale price.
A practical sequence
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An example to work through
At a hypothetical selling price of $20 and cost of $12, the difference is $8. Margin is 40%; markup is about 66.67%. The percentages differ because their denominators differ.
Questions about this topic
Is a forty-percent markup a forty-percent margin?
No. They use different denominators.
Is gross margin the same as take-home profit?
No. Other costs and obligations can remain.
