Invoicing
Markup
The percentage added to your cost to determine the customer-facing sell price.
Definition
Markup ≠ margin. 40% markup on a $100 part = $140 sell price = 28.6% margin. Most trades mark up parts 25–50% and small consumables 100% or more.
Example
Cost $100 × 1.40 = $140 sell price, $40 profit, 28.6% margin.