Estimate to Complete

Estimate to complete (ETC) values are meant to provide an current estimate of what it will take to complete the remaining work for a project. At the beginning of a project, the time phased budget and ETC values are equal. The budget at completion (BAC) and estimated at completion (EAC) are also equal. Once work begins on the project, the actual costs replace the ETC values for the current reporting period. As a result, the EAC is updated every reporting period assuming you use the default calculation of EAC equals the cumulative to date actual costs plus the ETC. Comparing the BAC to the EAC provides an indication whether the work will be completed under or over budget. Comparing the baseline end dates to the forecast end dates provides an indication whether individual work elements or the project will complete earlier or later than planned.

A common best practice is to continually maintain the ETC values every reporting period where you are updating the data as needed for in progress work packages or near term work packages that are about to begin work. To establish the initial ETC values, you can generate them using the budget baseline work package dates and time phased budget data and then manually maintain the ETC data. Otherwise, you can import the current schedule data from your schedule tool provided you created your budget data using the baseline schedule or import the data from another system. Be sure to set the applicable project level forecast options to reflect how to you want to create and maintain the ETC data. See Set Forecast Options