How do I accurately calculate Earned Value Management (EVM) for a delayed project?
My project is currently behind schedule and over budget. My Planned Value (PV) is $500k, but my Earned Value (EV) is only $350k, and my Actual Cost (AC) is already at $450k. Can someone help me calculate my SPI and CPI? More importantly, how do I present these numbers to executive leadership to explain our current status and our forecast for completion?
2025-09-15 in Project Management by Jennifer Taylor
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All answers to this question.
Based on your numbers, your Schedule Performance Index (SPI) is $EV / PV = 350 / 500 = 0.70$. Your Cost Performance Index (CPI) is $EV / AC = 350 / 450 = 0.78$. Since both values are below 1.0, you are both behind schedule and over budget. When presenting to executives, be direct: tell them you are only 70% efficient on time and 78% efficient on cost. Use these to calculate your Estimate at Completion (EAC) to show them the new projected total cost. It’s better to give them the bad news now with a data-backed recovery plan than to wait until the project fails. Transparency with EVM metrics actually builds more trust with leadership than vague promises.
Answered 2025-09-17 by Karen Robinson
Those formulas are great, but what if the reason for the delay was a "Force Majeure" event? Do the EVM rules change if the cause was outside of the project team's control?
Answered 2025-09-19 by Thomas Wright
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Thomas, the formulas don't change, but the Variance Analysis does. The EVM metrics show what happened, but the variance analysis explains why. If it was an external event, you would use these metrics to justify a change request to re-baseline the project. You essentially "reset" your PV and schedule based on the new reality. This is why documented logs are so important; they provide the context for the numbers. It allows you to say, "Yes, our CPI is 0.78, but here is the specific event that caused it and here is how the new baseline will prevent further decay."
Commented 2025-09-21 by Karen Robinson
Use the To-Complete Performance Index (TCPI) to show them exactly what level of efficiency is required for the rest of the project to finish on the original budget.
Answered 2025-09-23 by Joseph Martinez
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TCPI is a powerful metric! It really highlights the "steepness" of the hill the team has to climb to get back on track. It's a great reality check for stakeholders.
Commented 2025-09-24 by Jennifer Taylor
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