How do you calculate Variance at Completion (VAC)?

VAC = BAC − EAC. A negative VAC means you’re forecasting an overrun.

VAC shows if you are trending toward finishing under budget or over budget compared to the original plan.

Variance at Completion (VAC) Calculator

This VAC Calculator shows how far over or under budget you’re likely to finish. A negative VAC means you're projecting an overrun.

BAC (Budget at Completion) $ EAC (Estimate at Completion) $

VAC = BAC − EAC • Positive VAC → Under budget • Negative VAC → Over budget expected