Margin vs markup
Margin and markup describe the same profit from different perspectives. Margin divides profit by selling price; markup divides profit by cost.
1. Collect assumptions
With a cost of 100 and price of 150, profit is 50. Margin is 33.3%, while markup is 50%.
2. Check price and risk
Use margin when planning a price for target profitability; use markup when comparing profit with cost.
3. Document working rules
Translate the calculated result into a simple proposal: what the client receives, by when, how many changes are included and what happens when scope changes. The price then relates to a defined commitment.