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Calculate cost variance from earned value and actual cost.
Methodology note. Formulas are based on established Earned Value Management terminology. Core references include Project Management Institute (PMI) educational resources and U.S. Department of Energy EVM guidance. Last reviewed: August 14, 2026. Read methodology · View sources
Cost Variance formula
CV = EV − ACPositive CV is favorable; negative CV is unfavorable. Pair it with CPI for a ratio view of the same cost performance relationship.
For context and dependent metrics, continue to the related calculator or use the full earned value calculator.