Course Content
Unit IV: Managerial Accounting

Volume Variance typically refers to the differences between the expected (standard) level of activity and the actual level of activity. Volume variances are particularly important in the context of fixed costs, as these costs do not vary with production levels in the short term. The volume variance specifically addresses the impact of production volume (or activity level) on fixed costs, typically for both overhead and profitability.

Here are the key types of Volume Variance:


1. Overhead Volume Variance

Explanation: This variance measures the difference in applied fixed overhead based on the actual production volume compared to the standard (budgeted) volume. It isolates how much of the overhead variance is due to a difference in production levels.

Formula:

Overhead Volume Variance = (Actual Production Units Budgeted Production Units) × Fixed Overhead Rate per Unit

  • A favorable variance occurs when the actual volume is higher than expected (more units produced, more overhead absorbed).

  • An unfavorable variance occurs when the actual volume is lower than expected (fewer units produced, less overhead absorbed).

Example: If the factory planned to produce 10,000 units (standard volume) and applied fixed overhead based on this number but only produced 8,000 units, this would create a volume variance that shows how much of the fixed overhead was under-applied due to the lower production.