Earned Value Management (EVM) is a project management technique that integrates scope, schedule, and cost data to provide objective measures of project performance and progress. It answers three fundamental questions: how much work was planned, how much work was completed, and how much did the completed work cost.

Origins and History

EVM originated in the US Department of Defense as part of the Cost/Schedule Control Systems Criteria (C/SCSC), established in 1967 under the direction of the Air Force and the Office of the Secretary of Defense. C/SCSC required defense contractors to implement integrated cost and schedule management systems. The criteria evolved through several revisions, and in 1996 ANSI published the Earned Value Management Systems standard (ANSI/EIA-748), which replaced the DoD-specific criteria with an industry-wide standard. The standard was revised in 1998 and 2019. PMI incorporated EVM as a core technique in the PMBOK Guide, and it has been widely adopted outside defense in industries including construction, aerospace, IT, and energy. The UK’s Association for Project Management (APM) and NATO also reference EVM in their standards.

Core Metrics

EVM uses three fundamental measurements. Planned Value (PV) is the budgeted cost of work scheduled to be completed by a given date. Earned Value (EV) is the budgeted cost of work actually completed by that date. Actual Cost (AC) is the actual cost incurred for the work completed. From these, key indicators are derived: Schedule Variance (SV) = EV - PV (negative means behind schedule), Cost Variance (CV) = EV - AC (negative means over budget), Schedule Performance Index (SPI) = EV / PV, and Cost Performance Index (CPI) = EV / AC. The Estimate at Completion (EAC) forecasts total project cost based on current performance trends.

Practical Applications

EVM is mandatory on major US government contracts and is used across industries for early detection of schedule and cost deviations, forecasting final project costs and completion dates, and providing objective performance data to stakeholders and steering committees. Modern tools such as Microsoft Project, Primavera P6, and Deltek Cobra implement EVM calculations.

Sources

  1. Department of Defense (1967). “Cost/Schedule Control Systems Criteria (C/SCSC).” DoD Instruction 7000.2.
  2. ANSI/EIA (2019). “Earned Value Management Systems.” ANSI/EIA-748-D.
  3. Fleming, Q.W. and Koppelman, J.M. (2010). Earned Value Project Management, 4th ed. PMI.