In this article we guide you on setting a margin for quotes and invoices and this will update all your markups.
Margin: Sales minus costs of goods sold, so it is the percentage difference between the selling price and the profit.
Markup: Percentage difference between the actual cost and the selling price.
Step 1: Navigate to Accounts and select Quotes
Step 2: Select Quote you wish to set and update all Markups
Step 3: Select the Margin
Step 4: Change Margin
The Markup and Margin percentage should be updated and invoice changed.