Deviations
The following deviations may occur between actual and budgeted amounts.
- Occupation deviation
 - Consumption deviation
 - Over-/undercoverage
 
Occupation deviation
Occupation deviation is only applicable to full-cost accounting systems.
- 
                              
Quantity Based:
allowed costs - (budgeted performance quantity * total effective rate/surcharge) - 
                              
Amount Based:
allowed costs - (surcharge base amount * effective surcharge) 
Consumption deviation
Actual costs - allowed costs