Frozen Forecasts

A frozen forecast is created by copying the actual costs and the forecast classes defined in a cost set (selected when you freeze the forecast) to a new class.

The Retain EAC method always uses the following formula:

EAC = Forecast + Actual Costs

This provides a smooth S-curve report, where the forecast line in the curve report always starts from the end of the actual costs. In a gated actual cost scenario, there is a potential difference in the actual costs obtained from accounting and the forecast.

This method should be chosen with care, as the difference in the EAC and the actual costs, cumulative to date, produce strange results when producing the IPMR Format 4 report based on a Forecast or ETC class plus cumulative to date actual costs, and when comparing the results with the IPMR Format 1 report that uses the frozen forecast.