Earned Value Management (EVM)

Earned Value Management (EVM) integrates scope, time, and cost.
PV = Planned Value = Budgeted Cost of Work Scheduled (BCWS)
EV = Earned Value = Budgeted Cost of Work Performed (BCWP)
AC = Actual Cost = Actual Cost of Work Performed (ACWP)
BAC = Budget at Completion
EAC = Estimate at Completion
ETC = Estimate to Complete
 
Example:
Performance of Day 1 :
Data : PV = $1000, EV = $750, AC = $900, BAC = $4000
 
1. Schedule Variance (SV) = EV – PV
SV = $750 – $1000 = -$250
 
2. Schedule Performance Index (SPI) = EV / PV
SPI = $750 / $1000 = 0.75
 
3. Cost Variance (CV) = EV – AC
CV = $750 – $900 = -$150
 
4. Cost Performance Index (CPI) = EV / AC
CPI = $750 / $900 = 0.83 [Interpretation: For every $1, 17 Cents are being wasted]
 
ValueSchedule VarianceCost Variance
> 0Ahead of ScheduleUnder Budget
= 0On timeWithin Budget
< 0Behind ScheduleOver Budget
ValueSchedule Performance Index
Cost Performance Index
> 1Ahead of ScheduleUnder Budget
= 1On timeWithin Budget
< 1Behind Schedule

Over Budget

Forecasting – As on date measurement. Its advantage is it gives alert.
1. For Entire Project
Estimate At Completion (EAC) = BAC / CPI
EAC = $4000 / 0.83 = $4819
 
2.For Remaining Project
Estimate To Complete (ETC) = EAC – AC
ETC = $4819 – $900 = $3919
 
To-Complete Performance Index (TCPI) – It is the new target of cost performance setup by the management.
TCPI = (Work Remaining in Money Terms) / (Fund Remaining) = (BAC – EV) / (BAC – AC)
TCPI = ($4000 – $750) / ($4000 – $900) = 1.05
 
TCPI Value:
> 1 : Performance need to be increased to stay within budget
< 1 : Performance can decrease to stay within budget
 
TCPI < 1 is preferred situation.

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