About To-Complete Performance Index (TCPI)
The To-Complete Performance Index (TCPI) is a calculated projection of the cost performance that must be achieved on the remaining work to meet recognized business goals, such as the Budget at Completion (BAC) or the Estimate at Completion (EAC).
TCPI is essentially a ratio of the remaining work to the remaining funds. It enables a project manager to determine the level of performance needed to achieve the cost or time objectives.
Based on the BAC, TCPI is calculated as (Budget at Completion minus Earned Value) divided by (Budget at Completion minus Actual Cost). Based on the EAC, TCPI is calculated as (Budget at Completion minus Earned Value) divided by (Estimate at Completion minus Actual Cost). P6 initially sets the BAC equal to the EAC in order to use only EAC in TCPI calculations.
Last Published Wednesday, April 1, 2026