Markup is profit measured against cost. Margin is profit measured against selling price. They are related but not interchangeable, so a 30% markup does not produce a 30% margin.
This is one of those small terminology problems that becomes expensive once a team starts using different percentages in quotes, price sheets and reports.
Markup uses cost as the base
Markup = (selling price − cost) ÷ cost. If cost is $70 and the price is $100, the markup is about 42.9%.
Because the base is cost, markup is convenient when a seller starts with a known unit cost and wants to add a percentage.
Margin uses selling price as the base
Margin = (selling price − cost) ÷ selling price. In the same $70 to $100 example, margin is 30%.
Margin is often the better management language when the business is discussing what percentage of revenue remains after the direct cost.
Why teams get into trouble
A salesperson may say “add 30%” while finance means “keep a 30% margin”. Those are different instructions and produce different prices.
Write the base into pricing rules. “30% markup on cost” is much clearer than “30% margin” if the method is what the team really means.
A simple pricing example
A product costs $70 and sells for $100. Profit is $30. The margin is 30% because profit is measured against the $100 selling price. The markup is about 42.9% because profit is measured against the $70 cost. Both are correct. They answer different questions.
What to write in a pricing rule
Write the base beside the percentage. “Add 30% markup to cost” is an operating instruction. “Maintain 30% gross margin” is a management target. Those statements should not be shortened to the same phrase in a sales template.
Review live quotes
Take a few real quotes and reverse the calculation. Check the actual margin and markup produced by the pricing rule. This is the quickest way to catch a team using finance language and sales language interchangeably.
Common mistakes
- Calling markup and margin the same percentage.
- Using revenue as the denominator in a cost-plus pricing rule by accident.
- Changing pricing logic without updating the sales templates and calculators.
Where a calculator or tool helps
Use the Markup vs Margin Calculator when you need to see both measures together. The Profit Margin Calculator is useful when the question is specifically about profit as a percentage of revenue.
A simple decision check
When a pricing instruction is handed to another person, include both the percentage and the base.
Recheck a few live quotes with the formula. A simple comparison often exposes where terminology has drifted.