Absorption Cost vs. Variable Cost

Attribute	Absorption Cost	Variable Cost
Includes fixed manufacturing overhead	Yes	No
Direct materials included	Yes	Yes
Direct labor included	Yes	Yes
Variable manufacturing overhead included	No	Yes
Used for external reporting	Yes	No

Definition

Absorption cost and variable cost are two different methods used in managerial accounting to allocate costs to products. Absorption cost includes all manufacturing costs, both variable and fixed, while variable cost only includes the variable manufacturing costs. Absorption costing is required by Generally Accepted Accounting Principles (GAAP) for external financial reporting, while variable costing is often used for internal decision-making purposes.

Components

Under absorption costing, all manufacturing costs are included in the cost of the product. This includes direct materials, direct labor, variable manufacturing overhead, and fixed manufacturing overhead. On the other hand, variable costing only includes direct materials, direct labor, and variable manufacturing overhead in the cost of the product. Fixed manufacturing overhead is treated as a period cost and is not included in the cost of the product under variable costing.

Income Statement Presentation

One of the key differences between absorption cost and variable cost is how they impact the income statement. Absorption costing allocates fixed manufacturing overhead to products based on the level of production, which can result in fluctuations in reported net income. In contrast, variable costing treats fixed manufacturing overhead as a period cost and does not allocate it to products. As a result, net income under variable costing is more stable and less affected by changes in production levels.

Inventory Valuation

Another important distinction between absorption cost and variable cost is how they value ending inventory. Under absorption costing, fixed manufacturing overhead is included in the cost of ending inventory, while under variable costing, only variable manufacturing costs are included in the cost of ending inventory. This can lead to differences in reported inventory values and can impact financial ratios and decision-making.

Decision-Making

When it comes to decision-making, absorption costing and variable costing can lead to different outcomes. Absorption costing may incentivize managers to increase production levels in order to spread fixed manufacturing overhead over more units, potentially leading to higher reported profits. On the other hand, variable costing focuses on the variable costs of production and may provide a more accurate representation of the costs associated with producing each unit.

Cost Behavior

One of the key differences between absorption cost and variable cost is how they treat fixed manufacturing overhead. Absorption costing treats fixed manufacturing overhead as a product cost and includes it in the cost of the product, regardless of whether the product is sold. Variable costing, on the other hand, treats fixed manufacturing overhead as a period cost and only includes it in the cost of goods sold when the product is sold. This can impact how costs are allocated and reported in the financial statements.

External Reporting

For external financial reporting purposes, absorption costing is required by GAAP. This is because absorption costing is seen as providing a more accurate representation of the total cost of producing a product, as it includes all manufacturing costs, both variable and fixed. Variable costing, on the other hand, is often used for internal decision-making purposes, as it focuses on the variable costs of production and can provide insights into the cost behavior of the business.

Conclusion

In conclusion, absorption cost and variable cost are two different methods used in managerial accounting to allocate costs to products. Absorption costing includes all manufacturing costs, both variable and fixed, while variable costing only includes the variable manufacturing costs. The choice between absorption costing and variable costing can impact how costs are allocated, how net income is reported, and how decisions are made within an organization. Understanding the differences between absorption cost and variable cost is essential for managers to make informed decisions and accurately assess the financial performance of their business.