forProject Technology

To Complete Performance Index – BAC

To Complete Performance Index – BAC (TCPI)

EVM Terms Reviewed by forProject Technology - updated Oct 2026
Quick definition: To Complete Performance Index - BAC, or TCPI (BAC), shows whether the original Budget at Completion (BAC) is still achievable. It's the cost efficiency needed on the remaining work to finish within that budget.

TCPI (BAC) tests whether the original Budget at Completion is still achievable. It shows the cost efficiency needed on the remaining work to finish within that budget. It answers a narrower question than To Complete Performance Index - EAC (TCPI (EAC)): not whether the current estimate is realistic, but whether the original budget can still be met. The formula is TCPI (BAC) = (BAC − BCWP) / (BAC − ACWP), where BCWP is the Budgeted Cost for Work Performed and ACWP is the Actual Cost of Work Performed.

What this means for you

TCPI (BAC) puts a number on how much better a project would have to perform to recover to its original budget. Where that number sits far above the efficiency achieved so far, it's evidence the budget is no longer a realistic target — often the trigger for revising the Estimate at Completion.

Also known as
N/A
Used in
Assessing whether the original budget is still achievable

FAQ

When is TCPI (BAC) used instead of TCPI (EAC)?
When the question is whether the original budget can still be met, rather than whether the current estimate is realistic. That's the less common question.
What does a high TCPI (BAC) indicate?
That recovering to the original budget would need efficiency well beyond what the project has achieved — usually a sign the budget is no longer realistic.
Definition maintained by forProject Technology.
© 2026 forProject Technology, Inc.
forProject