Glossary term
Absorption Costing
Absorption costing is an accounting method that assigns both direct and indirect manufacturing costs to the units a business produces.
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What Is Absorption Costing?
Absorption costing is an accounting method that assigns all manufacturing costs to the units a business produces. It includes direct materials, direct labor, variable manufacturing overhead, and fixed manufacturing overhead. Because fixed factory costs are absorbed into inventory, some costs may remain on the balance sheet until the goods are sold.
The method is also called full absorption costing or full costing. It matters for businesses that manufacture products because it affects inventory values, cost of goods sold, gross profit, and the timing of expense recognition.
Key Takeaways
- Absorption costing assigns both variable and fixed manufacturing costs to products.
- It is commonly used for external financial reporting and tax inventory costing.
- Unsold inventory can carry a portion of fixed manufacturing overhead on the balance sheet.
- It differs from variable costing, which expenses fixed manufacturing overhead in the period incurred.
- The method can affect reported profit when production and sales volumes differ.
How Absorption Costing Works
A manufacturer starts by identifying product costs. Direct materials and direct labor are traced to products. Manufacturing overhead, such as factory rent, depreciation, utilities, supervision, and maintenance, is allocated to products using a reasonable cost driver or overhead rate.
When products are completed but not yet sold, the assigned costs remain in inventory. When the products are sold, those costs move into cost of goods sold. This timing is important because absorption costing can defer some fixed manufacturing overhead into inventory when production exceeds sales.
What Costs Are Included?
Cost type | Included in absorption costing? | Example |
|---|---|---|
Direct materials | Yes | Raw materials used in production |
Direct labor | Yes | Factory wages tied to production |
Variable manufacturing overhead | Yes | Production supplies or factory utilities that vary with output |
Fixed manufacturing overhead | Yes | Factory rent or equipment depreciation |
Selling and administrative costs | No | Sales commissions or office salaries |
Absorption Costing Versus Variable Costing
Variable costing assigns variable manufacturing costs to products and treats fixed manufacturing overhead as a period expense. Absorption costing assigns fixed manufacturing overhead to products. That difference can change reported income when inventory levels change.
If a company produces more units than it sells, absorption costing may show higher profit than variable costing because some fixed overhead is stored in ending inventory. If it sells more than it produces, absorption costing may show lower profit because overhead from prior inventory is released through cost of goods sold.
Why It Matters
Absorption costing affects the financial statements readers use to judge margins, inventory, and operating performance. A business with growing inventory may look more profitable under absorption costing because not all fixed factory costs hit the income statement immediately.
That does not make the method wrong. It means managers and investors should understand what the method is doing. Profit quality, inventory turnover, production levels, and cash flow can help reveal whether reported earnings reflect real demand or inventory build.
The Bottom Line
Absorption costing assigns all manufacturing costs, including fixed factory overhead, to produced units. It is important for inventory and cost of goods sold, but users should watch how production volume and unsold inventory affect reported profit.