SV

Schedule Variance is an Earned Value Management metric that measures the difference between work actually performed and work scheduled to be performed at a given point in time. SV is calculated as BCWP minus BCWS, with negative values indicating behind-schedule performance.

SV provides objective measurement of schedule performance without relying solely on milestone dates. In EVM reporting, SV is often expressed as both a dollar value and a percentage (SPI - Schedule Performance Index). Significant negative schedule variance triggers management attention and may require corrective action plans. Understanding SV trends helps identify emerging schedule risks early.