The To Complete Performance Index (TCPI) is the ratio of the work remaining to be done to funds remaining to be spent as of the status date. A TCPI value greater than 1 indicates a need for increased performance; less than 1 indicates performance can decrease. This helps determine how much of an increase in performance is necessary on the remaining project or shell tasks to remain within budget.
TCPI = (BAC - BCWP) / (BAC - ACWP)
Example: ($1,000 – $400) / ($1,000 – $750) = 2.4