Direct answer
Margin divides profit by selling price, while markup divides the same profit by cost; they describe the same transaction from different reference values and therefore usually produce different percentages.
What this calculation tells you
Markup shows how far a selling price is set above a defined cost. Margin shows what portion of selling revenue remains after that cost. They are both useful, but substituting one for the other can materially underprice a product or misstate performance.
The quality of either result depends on the cost definition. A direct product cost, fully loaded unit cost, contribution cost, and accounting cost answer different management questions.
Where it is used
Retail and wholesale
Set or review prices from unit costs while tracking the share of sales retained as gross profit.
Contracting and trades
Separate job cost, overhead recovery, contingency, and profit instead of treating one markup as a complete estimate.
Manufacturing
Compare product economics using consistent material, labour, and overhead definitions across volumes.
Services and professional work
Relate billable price to delivery cost, utilization, non-billable time, and business overhead.
Common situations
- Converting a target gross margin into a selling price.
- Explaining why a 25% markup does not create a 25% margin.
- Reviewing whether increased costs were reflected in price.
- Comparing product or job performance using the same cost basis.
The denominator changes the story
If cost is 80 and price is 100, profit is 20. Markup compares 20 with cost 80, while margin compares 20 with revenue 100. Both are correct and neither can be relabelled as the other.
The difference grows as percentages increase, so a small terminology mistake can create a large pricing gap.
Pricing needs more than a percentage
Cost-plus markup is simple, but it does not automatically account for demand, capacity, competitor alternatives, value to the customer, taxes, payment fees, returns, or risk.
SBA break-even guidance emphasizes separating fixed and variable costs and using contribution margin to understand the sales volume required to cover fixed costs. A gross margin on one item does not establish net business profit.
Use consistent cost definitions
Decide whether the analysis uses purchase cost, cost of goods sold, variable delivery cost, or a fully loaded estimate. Applying the same percentage to inconsistent cost bases makes comparisons misleading.
For services, available billable hours and non-billable work often affect the effective cost per sold hour.
Common mistakes
Do not add a target margin percentage directly to cost, compare gross and net margins, or ignore discounts and returns that reduce realized revenue.
- Name cost, price, and profit.
- State gross, contribution, or net context.
- Test volume and break-even alongside unit percentages.
Practical questions
Frequently asked questions
Why are margin and markup different when profit is the same?
They divide that profit by different reference values. Markup uses cost; margin uses selling price or revenue.
Can a high markup still produce a weak business result?
Yes. Sales volume, overhead, waste, discounts, returns, financing, taxes, and other expenses can consume the gross profit created by the markup.
Which measure should I use for pricing?
Markup can help build a price from cost, while margin helps evaluate profit as a share of revenue. Use both with a clearly defined cost base and a broader break-even view.
Further reading
Authoritative sources
Use these primary and professional resources to check definitions, conventions, or requirements that may extend beyond this guide.