You can use markup items to apply an additional charge to an order. Using markup items lets you track markup amounts without affecting inventory valuation.
For example, you can charge a rush fee for completing a service or delivering an item quicker than is usually guaranteed. You can choose to mark up the amount for this charge by a flat additional fee.
When you add a markup item as a line item, it increases only the line-item amount that precedes the markup item. This can be a line-item or a subtotal group. The markup can be either a percentage of the total amount for the line or flat rate.
To create a markup item:
Go to Lists > Accounting > Items > New.
On the New Item page, click Markup.
On the Markup page, enter an identifier for the item in the Item Name/Number field.
In the Rate field, enter the rate for this markup as either a percentage or a dollar amount. To indicate a percentage, type a % sign after the number. To enter a dollar amount, enter a positive number.
On the Accounting subtab, select an Account.
Click Save.