Job costing using accounting software enables you to track a number of factors and analyze the results to aid decision making. A Job costing report helps you ensure that all costs involved in a job have been properly invoiced to the customer. An Estimates vs. Actuals report compares quoted costs to actual costs, and quoted revenues to actual revenues so that you can analyze any variances between your quote and the actual result. You can then use the results of your analysis to create more accurate quotes when you bid on future jobs.