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# TOPIC: Criterion for equations for Estimate At Completion (EAC) ?

## Criterion for equations for Estimate At Completion (EAC) ? 4 years 4 days ago #23354

 Rahul Vadakke Veetil PMP Topic Author Offline Senior Boarder Posts: 72 Thank you received: 2 I have seen the following equations for EAC EAC = BAC / CPI EAC = AC + (BAC - EV) EAC = AC + ((BAC - EV) / (CPI x SPI)) Can you please clarify the criterion by which one of these can be used? Like, at which situation, should we use one particular formula from these? Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.

## Criterion for equations for Estimate At Completion (EAC) ? 4 years 2 days ago #23370

 Kyle Kilbride, PMP Offline Moderator Posts: 121 Karma: 7 Thank you received: 49 EAC = BAC / CPI Use this when you have a trend on your project you expect to continue, and does not pose issue to the project. EAC = AC + (BAC - EV) Use this if you had a deviation on your project, but going forward you expect the project to be brought back in alignment with plan. EAC = AC + ((BAC - EV) / (CPI x SPI)) Use this if schedule performance must be considered (e.g. if project is behind schedule). Regards, Kyle Kilbride, P.Eng, PMP PMPrepCast Community Moderator Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.

## Criterion for equations for Estimate At Completion (EAC) ? 4 years 1 day ago #23403

 Rahul Vadakke Veetil PMP Topic Author Offline Senior Boarder Posts: 72 Thank you received: 2 Thank you. Which one to use, if the CPI or SPI kept changing at random till now? Is BAC/CPI the most commonly used? Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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