What is the To-Complete Performance Index?

The To-Complete Performance Index, or TCPI, calculates the cost performance required on the remaining work to meet a specific financial target. TCPI equals the remaining work divided by the remaining funds, written as BAC minus EV divided by BAC minus AC when targeting the original budget, or BAC minus EV divided by EAC minus AC when targeting the revised estimate. A TCPI greater than 1.0 means the team must perform more efficiently than they have been to meet the target, which becomes increasingly unrealistic as the value rises above 1.1.