What is Budget at Completion (BAC)?

The Budget at Completion (BAC) is comparable to creating a budget for a large event in that it establishes a total expenditure limit for a project. It is the whole amount of money you intend to spend from beginning to end. The BAC is the entire monetary cap for the project—from buying supplies to paying for services and everything else needed to get the task done. It’s similar to deciding how much you’re prepared to spend on decorations, food, and entertainment when planning a party. It helps you keep track of your spending and guarantees you remain inside your budget during the project.