Estimate At Completion (EAC)

The Estimate At Completion (EAC) is the manager's projection of total cost of the project at completion.

EAC = AC + ((BAC - EV) / CPI) = BAC / CPI

This formula is based on the assumption, that the performance of the project to date gives a good indication of what a performance will be in the future. In other words this formula is using statistics of the project to date to predict future results.