Meaning
Accounting process of allocating manufacturing overhead expenses, such as plant depreciation, factory rent and supervisor salaries, to inventory units based on production volume. Calculating fixed cost absorption governs unit cost calculations, gross margin reporting and inventory valuation under absorption costing standards. Application stops under variable costing methods where fixed overhead is expensed in the period incurred.
Absorption Process
Manufacturing overhead is distributed across units produced using predetermined overhead absorption rates based on machine hours or direct labor hours. Calculating fixed cost absorption requires comparing actual production output against standard budgeted capacity levels. High production volumes lower unit overhead costs by spreading fixed plant expenses over more finished goods.
Plant underutilization generates unfavorable variance write-offs when actual production falls below planned capacity targets. Inventory valuations include allocated fixed overhead until goods are sold.
Volume Variance
Low production output results in under-absorbed overhead that must be expensed directly to cost of goods sold. Inadequate fixed cost absorption depresses operating margins during periods of declining market demand. Production scheduling must balance inventory holding costs against overhead absorption benefits.
Valuation Boundary
Financial reporting standards mandate overhead allocation for external inventory valuation on balance sheets. Systematic fixed cost absorption prevents distortion of product profit margins across varying quarterly volume cycles. Capacity utilization drives unit cost stability.