Estimated-Extra-Cost (EEC)

Estimated-Extra-Cost (EEC) is a forecasting method that allows you to forecast on top of the budget. If the budget is not correct, you can either modify the budget or forecast the budget deviation. If you choose to forecast the budget deviation, you only need to register the forecast for that part of the project scope in which budget deviations are expected. However, you must still modify your forecast if the budget is modified.

You must set the Leading Forecast Method field to Estimated Extra Cost in the Project Accounting Parameters (tpppc0100s000) session to default this forecasting method for a project.

You can insert the cost forecast periodically for a project using various sessions. Possible scenarios:

  • If parts of the project scope require a new forecast, specify a new cost forecast in these sessions for the current date:
    • Material Cost Forecast (tpppc2516m000) session
    • Labor Cost Forecast (tpppc2536m000) session
    • Equipment Cost Forecast (tpppc2556m000) session
    • Subcontracting Cost Forecast (tpppc2576m000) session
    • Sundry Cost Forecast (tpppc2596m000) session
    • Overhead Forecast (tpppc6106m000) session
  • If a major part of the project scope require a new cost forecast, generate the forecast records for the new date. You can then review the generated cost forecast records data of the new date and modify the forecast values, if required. Generate the cost forecast using the Generate from Previous Date check box in the Generate Cost Forecast by Cost Object (tpppc2216m000) or Generate Cost Forecast by Activity/Cost Type (tpppc2226m000)session. The advantage is, the previous forecast values are displayed when you specify the new values.

If the work is completed, the estimate-to-complete value must be zero. To reduce the work of defining the data, you can generate cost forecast using the Generate Empty Forecast check box in the Generate Cost Forecast by Cost Object (tpppc2216m000) or the Generate Cost Forecast by Activity/Cost Type (tpppc2226m000)session.

You can monitor the result of the EEC method in various ways. Possible scenarios:
  • Using the variance at completion (VAC) method. The VAC in the Control Inquiries sessions, the Performance Measurement sessions, and the Performance Measurement using EVM (tppss0702m000) session is calculated using this formula:

    Variance at Completion (VAC) = Cost Variance (CV) - Estimated Extra Cost (EEC)

    Where, the Cost Variance (CV) is the difference between the Performed value and the actual value.

  • The specified EEC forecast amount can be displayed as an additional planned cost (on top of the budget) in the Display Financial Analysis (tppss0701m000) session.
Note: 

The Control Inquiries sessions and the performance management sessions such as these, can be used to add and view the project cost control data, forecasting data and the project performance data:

  • Control by Project/Material (tpppc4513m000)
  • Control by Project (tpppc4510m000)
  • Control by Project/Extension (tpppc4530m000)
  • Control by Project/Element (tpppc4520m000)
  • Control by Project/Activity (tpppc4540m000)
  • Performance Measurement OBS (tpppc5560m000)
  • Performance Measurement Activity (tpppc5540m000)