Job costing in QuickBooks Desktop can also help you estimate more accurately. Estimating may be the most important—and most difficult—part of running a contractor business. But unless you compare your estimated costs to your actual costs after the work is complete, you have no way to know if you are estimating too high or low, and no way of improving your ability to estimate in the future. The QuickBooks Desktop job cost reports make it easy for you to compare your estimated costs to actual costs.
The level of detail in your Item list determines the level of detail in your job cost reports.