A Cost Breakdown Structure (CBS) is the cost allocation to the lowest level of the Work Breakdown Structure (WBS). A CBS is a breakdown of the costs of the various components of the structure including all works or services done by the contractors or subcontractors. A CBS is used to continuously compare the actual cost with the budget, and integrated to the cost control system. (Refer to the WBS (Work Breakdown Structure))

Related Definitions in the Project: The Work Breakdown Structure (WBS); Project Cost; Project Management