Forecasting

EAC Forecast Calculator

Forecast the total final cost of your project based on current cost performance using the standard Earned Value formula EAC = BAC / CPI.

Calculator
EAC = BAC / CPI where CPI = EV / AC
Enter values to compute.

Interpretation Guide

  • EAC ≤ BACProject trending under budget at completion.
  • EAC 1–10% over BACModerate overrun — manage closely.
  • EAC > 10% over BACMaterial overrun — escalate and replan.

Example

BAC $500k, EV $200k, AC $240k → CPI 0.83 → EAC ≈ $600k, a $100k overrun forecast.

Real-world use cases

  • Monthly forecast updates
  • Change-control board decisions
  • Portfolio funding adjustments

Common mistakes

  • Assuming early-period CPI is stable
  • Ignoring known future risks not in CPI

Professional tips

  • Compare EAC against ETC bottom-up estimates
  • Use sensitivity (CPI × SPI) for stressed forecast
FAQ

Frequently asked questions

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