There are two key reports for each project. Each one has a different focus and purpose.
The Project P&L (Profit & Loss) is a snapshot that shows you how your project is tracking from a financial perspective.
This report provides a breakdown of the project based on any products or services used. For instance, any time logged against a particular hourly service is shown here with the amount of total time that was originally quoted against what has actually been done. This is particularly helpful for getting a feel for where things were taking longer than expected. This allows you to more accurately quote for future projects.