Variable Cost and Net Operating Income

3885 Words Feb 25th, 2013 16 Pages
ASSIGNMENT P 6-16 , P6-17 PROBLEM 6-16 Variable and Absorption Costing Unit Product Costs and Income Statements; Explanation of Difference in Net Operating Income [LO1, LO2, LO3] Wiengot Antennas, Inc., produces and sells a unique type of TV antenna. The company has just opened a new plant to manufacture the antenna, and the following cost and revenue data have been provided for the first month of the plant's operation in the form of a worksheet.

Because the new antenna is unique in design, management is anxious to see how profitable it will be and has asked that an income statement be prepared for the month. Required: 1. Assume that the company uses absorption costing. a. Determine the unit product cost. b. Prepare an income statement
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Variable costing is sometimes referred to as direct costing or marginal costing. Absorption Costing As discussed in Chapter 3, absorption costing treats all manufacturing costs as product costs, regardless of whether they are variable or fixed. The cost of a unit of product under the absorption costing method consists of direct materials, direct labor,

and both variable and fixed manufacturing overhead. Thus, absorption costing allocates a portion of fixed manufacturing overhead cost to each unit of product, along with the variable manufacturing costs. Because absorption costing includes all manufacturing costs in product costs, it is frequently referred to as the full cost method. p. 231 EXHIBIT 6–1 Variable Costing versus Absorption Costing

Selling and Administrative Expenses Selling and administrative expenses are never treated as product costs, regardless of the costing method. Thus, under absorption and variable costing, variable and fixed selling and administrative expenses are always treated as period costs and are expensed as incurred. Summary of Differences The essential difference between variable costing and absorption costing, as illustrated in Exhibit 6-1, is how each method accounts for fixed manufacturing overhead costs—all other costs are treated the same under the two methods. In absorption costing, fixed manufacturing overhead costs are included as part of the costs of work in process inventories. When units

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