Preparation for the PMP Exam: Earned Value Management (EVM) formulas

EV -- Earned Value
PV -- Planned Value
AC -- Actual Cost

BAC -- Budget At Completion (sum of all PVs)



Cost

CV -- Cost Variance
CV == EV - AC

CPI -- Cost Performance Index
CPI == EV / AC


Schedule

SV -- Schedule Variance
SV == EV - PV

SPI -- Schedule Performance Index
SPI == EV / PV


Forecast
ETC -- Estimated to Complete
EAC -- Estimated at Completion

Option	ETC	EAC
New estimate (re-estimate)	ETC	EAC == AC + ETC
Atypical variances (using remaining budget)	ETC == BAC-EV	EAC == AC + (BAC-EV)
Typical variances (using CPI)	ETC == (BAC-EV)/CPI	EAC == AC + (BAC-EV)/CPI == BAC/CPI
(using CPI and SPI)		EAC == AC + (BAC-EV)/(CPI*SPI)

VAC -- Variance at Completion
VAC == BAC - EAC

To-Complete Performance Index based on BAC
TCPI(BAC) == (BAC-EV) / (BAC-AC)

To-Complete Performance Index based on EAC
TCPI(EAC) == (BAC-EV) / (EAC-AC)

To-Schedule Performance Index
TSPI = (BAC-EV) / (BAC-PV)