The next CPA Exam Question of the Day is answered by Yaeger CPA Review Instructor Cindy Simpson, CPA, CMA, CIA. Yaeger CPA Review provides these exclusively to the readers of another71.com.
2009 Wiley BEC, Module 45 (Planning, Control, and Analysis), MCQ 14, Page 338.
In calculating the breakeven point for a multi-product company, which of the following assumptions are commonly made when variable costing is used?
I. Sales volume equals production volume.
II. Variable costs are constant per unit.
III. A given sales mix is maintained for all volume changes.
A. I and II.
B. I and III.
C. II and III.
D. I, II, and III.
The Wiley answer on pages 347–348 states that [C] is the correct answer. Wiley states that item [I] is false in variable costing because the breakeven point will be the same even if production does not equal sales. Here is some additional explanation for why [C] is the BEST answer.
This question can be a little tricky because it mixes two concepts: CVP analysis and variable costing. If you refer to page 320 in the Wiley BEC book, item 3, you can see under the Assumptions of CVP Analysis, that question item [I] corresponds to assumption item [g] Units produced = Units sold, question item [II] corresponds to assumption item [d] Variable costs per unit are constant, and question item [III] corresponds to assumption item [b] The sales mix remains constant. Therefore, [I], [II], and [III] are all assumptions of CVP analysis. Regarding question items [II] and [III], both assumptions apply to variable costing because they are important in calculating contribution margin in single- and multi-product firms, and contribution margin is used in the variable costing income statement found on page 321 (middle of the page). Contribution margin = sales price — variable costs.
But what makes this question tricky is that they also include variable costing in the question. The difference between variable costing and absorption costing is the treatment of fixed factory overhead. In variable costing, fixed factory overhead is treated as a PERIOD cost and the entire amount is always subtracted in calculating net income.
However, in absorption costing (which is the costing we use in GAAP), fixed factory overhead is treated as a PRODUCT cost and flows through the inventory accounts of work-in-process and finished goods inventory, and is eventually expensed as Cost of Goods Sold (COGS) when the product is sold. If we produce MORE than we sell, then finished goods inventory goes up (trapping the fixed factory overhead), COGS goes down, and net income is higher (as compared to net income under variable costing). If we produce LESS than we sell, then finished goods inventory goes down (releasing the fixed factory overhead), COGS goes up, and net income is lower (as compared to net income under variable costing). The thing is, as you can see in my examples of comparing absorption costing versus variable costing . . . there is no requirement in variable costing that Sales = Production, so question item [I] is FALSE. That makes the BEST answer as question items [II] and [III] because these assumptions apply to both CVP analysis and variable costing, which is answer [C].
One other note: There is no requirement that Sales = Production in absorption costing either; that’s why we have changes in ending inventory from one accounting period to the next.
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