6 5 Compare and Contrast Variable and Absorption Costing Principles of Accounting, Volume 2: Managerial Accounting

These differences are due to the treatment of
fixed manufacturing costs. Under absorption costing, each unit in
ending inventory carries $0.60 of fixed overhead cost as part of
product cost. Therefore, ending inventory under absorption costing
includes $600 of fixed manufacturing overhead costs ($0.60 X 1,000
units) and is valued at $600 more than under variable costing. Absorption costing can skew a company’s profit level due to the fact that all fixed costs are not subtracted from revenue unless the products are sold.

  • (d) Manufacturing costs that cannot be identified with any product is apportioned by computing predetermined absorption rate.
  • The apportionment and allocation of fixed manufacturing overheads to cost centres make executives more conscious about costs and services rendered.
  • Generally accepted accounting principles require use of absorption costing (also known as “full costing”) for external reporting.
  • Absorption vs. variable costing will only be a factor for companies that expense costs of goods sold (COGS) on their income statement.
  • Companies, however, can get information from variable costing and absorption costing systems as long as the companies can calculate the amount of every manufacturing fixed overhead per unit.

Over the year, the company sold 50,000 units and produced 60,000 units, with a unit selling price of $100 per unit. It identifies and combines all the production costs, whether Variable or Fixed. It discloses inefficient or efficient utilisation of production resources by indicating under-absorption or over-absorption of factory overheads.

What Is the Income Statement Under Marginal Costing? (Guidance)

However, absorption-style income statements are required by generally accepted accounting principles. You can calculate a cost per unit by taking the total product costs / total units PRODUCED. Yes, you will calculate a fixed overhead cost per unit as well even though we know fixed costs do not change in total but they do change per unit. When we prepare the income statement, we will use the multi-step income statement format.

When more units are produced (20,000) than sold (15,000), ending inventory is 5,000 units higher than beginning inventory. When fewer units are produced (10,000) than sold (15,000), ending inventory is 5,000 units lower than beginning inventory. For example, assume a new company has fixed overhead of $12,000 and manufactures 10,000 units. Direct materials cost is $3 per unit, sales invoice direct labor is $15 per unit, and the variable manufacturing overhead is $7 per unit. Under absorption costing, the amount of fixed overhead in each unit is $1.20 ($12,000/10,000 units); variable costing does not include any fixed overhead as part of the cost of the product. Figure 6.11 shows the cost to produce the 10,000 units using absorption and variable costing.

Advantages and Disadvantages of the Variable Costing Method

Next, we can use the product cost per unit to create the absorption income statement. We will use the UNITS SOLD on the income statement (and not units produced) to determine sales, cost of goods sold and any other variable period costs. Depending on a company’s business model and reporting requirements, it may be beneficial to use the variable costing method, or at least calculate it in dashboard reporting. Managers should be aware that both absorption costing and variable costing are options when reviewing their company’s COGS cost accounting process.

Direct and Indirect Costs

In case, the business shows seasonal sales pattern, the production may be built up during the slack season. If so, the operations will show losses during the period of production in the variable costing, and large profits will be shown in the periods when goods are sold. Therefore, the inclusion of fixed costs may, sometimes, lead to improper decisions. As such, absorption costing is of limited significance from the point of view of decision-making. There are also costs other than production or manufacturing costs which every firm has to incur.

How to Calculate Variable Contribution Margin

It is now time to consider aggregated financial data and take into account shifting amounts of SG&A. The following income statements present information about Nepal Company. On the left is the income statement prepared using the absorption costing method, and on the right is the same information using variable costing. For now, assume that Nepal sells all that it produces, resulting in no beginning or ending inventory.

Sales Revenue

Public companies are required to use the absorption costing method in cost accounting management for their COGS. Many private companies also use this method because it is GAAP-compliant whereas variable costing isn’t. Absorption costing is by GAAP because the product cost includes fixed overhead.

Absorption Costing Formula

This information must be interlaced with knowledge of markets, customer behavior, and the like. The resulting conclusions can set in motion plans of action that bear directly on the overall fate of the organization. Variable costing data are quite useful in avoiding incorrect decisions about product discontinuation. Some will usually be more successful than others, and a logical business decision may be to focus on the best-performing units, while discontinuing others. Each is being produced in equal proportion, and the company is fully able to meet customer demand from existing capacity (i.e., producing more will not increase sales).