What is the to-complete performance index (TCPI)?

To-Complete Performance Index (TCPI) is a metric in project management based on the Earned Value Management (EVM) method. TCPI indicates how efficiently the remaining budget must be used to complete the project within the given budget.

Formula for TCPI:

TCPI = (BAC - EV) / (BAC - AC)

where:

• BAC (Budget at Completion) — the total budget of the project
• EV (Earned Value) — the cost of work performed to date
• AC (Actual Cost) — the actual costs incurred to date

If TCPI > 1, it means that to complete the project within the budget, resource utilization efficiency needs to be increased. If TCPI < 1, the project is under budget.

TCPI helps managers understand how realistic the current plan is and what efforts are needed for successful project completion.