Cost Performance Index

Cost performance index, abbreviated as CPI, is a measure of the cost efficency of budgeted resources expressed as the ratio of earned value to actual cost.

 

Cost Performance Index Formula

\(\large{ CPI =  \frac{EV}{AC}  }\)

Symbol

\(\large{ CPI }\) = cost performance index

\(\large{ AC }\) = actual cost

\(\large{ EV }\) = earned value