On a Project, you have the ability to toggle on and off financial fields that show you the amount of money spent on a Project, the budget of a Project, the margin on that Project, and the profit on that Project:

You can choose to view or hide these fields by hovering on the top field of the Project and clicking the edit pencil to the right, then toggling the fields you wish to view or hide:

The four fields are Spent, Total $, Margin and Profit.

Total $ refers to the total/expected revenue from the project. This would be looking across all your Items and multiplying Labour Out Rates against expected/allocated hours, and giving a total based on that.

Spent refers to the same Items and Labour Out Rates against your time tracked. This serves as a Burn rate.

Profit is calculated based on the Item Quantity/Hours against the Labour Out(Charge Rate) and Labour In(Labour Cost Rate). Your 'Labour Out x Quantity' less your 'Labour In x Quantity' will then be displayed as the Profit figure.

Margin is your project Profit Margin. It calculates this first by looking at a given item's Total Expected return and its Total Expected Cost to produce the Profit figure. This will then be taken as a percentage of the Total ($) field to product a Margin figure per item. This will then be calculated across all items and displayed as the Project Margin field.