9. Estimate At Completion (EAC) - EAC is the projection of the total cost at the end of
the project. It is the actual cost occurred till date plus an estimated cost to complete
the remaining work. The EAC is calculated as -
EAC = Actual Cost (AC) + Estimate to Complete (ETC)
There are different methods to calculate EAC. A project can select the formula
that best fits as per their project type, complexity and size. The EAC can also
be calculated as -
EAC = BAC / CPI = BAC*AC / EV.
EAC = AC + (BAC - EV) / CPI
The EAC should be evaluated periodically on a monthly basis or when any
major changes happens in the project.
10. Estimate To Complete (ETC) - ETC is the estimated cost to complete the remaining
work of the project. ETC needs to be evaluated again if any significant changes
happens and the previous estimation becomes invalid. The Estimate To
Complete (ETC) is calculated as -
ETC = Estimate At Completion (EAC) - Actual Cost (AC)
11. Variance At Completion (VAC) - VAC predicts the difference between the Budget
At Completion (BAC) and the expected total costs that will occur at the end of the
project as per the current trends. It is the variance in the total cost of budget at the
completion of the project. It tells how much the project is under-run or overrun the
budgeted cost at the end of project. The VAC is calculated as -
VAC = Budget At Completion (BAC) - Estimate At Completion (EAC)
VAC < 0 (Negative) - The project is overrun.
VAC > 0 (Positive) - The project is under-run.
12. To Complete Performance Index (TCPI) - The TCPI predicts the performance
expected from the project to meet the BAC or EAC costs. TCPI gives a very
significant values that helps project to manage the project performance and
to do a recovery. The TCPI is calculated in two ways -
TCPI based on BAC is performed to meet the initial project BAC -
TCPI = (BAC - EV) / (BAC - AC)
TCPI based on EAC is performed to meet the initial project EAC -
TCPI = (BAC - EV) / (EAC - AC)
13. To Complete Schedule Performance Index (TSPI) - The TSPI predicts efficiency
require during remaining time period to meet the project schedule. The TSPI
is calculated as -
TSPI = (Planned Duration – Earned Schedule) / (Total Duration – Actual Time)
Planned Duration (PD) is also known as Estimated Duration (ED).
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