Managers in large organizations have to delegate some decisions to those who are at lower levels in the organization. This chapter explains how responsibility accounting systems, segmented income statements, and return on investment (ROI) and residual income measures are used to help control decentralized organizations.
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A decentralized organization does not confine decision-making authority to a few top executives; rather, decision-making authority is spread throughout the organization. The advantages of decentralization are as follows:
It enables top management to concentrate on strategy, higher-level decision- making, and coordinating activities.
It acknowledges that lower-level managers have more detailed information about local conditions that enable them to make better operational decisions.
It enables lower-level managers to quickly respond to customers.
It provides lower-level managers with the decision-making experience they will need when promoted to higher level positions.
It often increases motivation, resulting in increased job satisfaction and retention, as well as improved performance.
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The disadvantages of decentralization are as follows:
Lower-level managers may make decisions without fully understanding the “big picture.”
There may be a lack of coordination among autonomous managers. The balanced scorecard can help reduce this problem by communicating a company’s strategy throughout the organization.
Lower-level managers may have objectives that differ from those of the entire organization. This problem can be reduced by designing performance evaluation systems that motivate managers to make decisions which are in the best interests of the company.
It may difficult to effectively spread innovative ideas in a strongly decentralized organization. This problem can be reduced through the effective use of intranet systems, which enable globally dispersed employees to electronically share ideas.
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Responsibility accounting systems link lower-level managers’ decision-making authority with accountability for the outcomes of those decisions. The term responsibility center is used for any part of an organization whose manager has control over, and is accountable for cost, profit, or investments. The three primary types of responsibility centers are cost centers, profit centers, and investment centers.
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The manager of a cost center has control over costs, but not over revenue or investment funds.
Service departments such as accounting, general administration, legal, and personnel are usually classified as cost centers, as are manufacturing facilities. Standard cost variances and flexible budget variances, such as those discussed in Chapters 10 and 11, are often used to evaluate cost center performance.
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The manager of a profit center has control over both costs and revenue. Profit center managers are often evaluated by comparing actual profit to targeted or budgeted profit. An example of a profit center is a company’s cafeteria.
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The manager of an investment center has control over cost, revenue, and investments in operating assets. Investment center managers are often evaluated using return on investment (ROI) or residual income (discussed later in this chapter). An example of an investment center would be the corporate headquarters.
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Part I
Superior Foods Corporation provides an example of the various kinds of responsibility centers that exist in an organization.
Part Ii
The President and CEO, as well as the Vice President of Operations, manage investment centers.
Part III
The Chief Financial Officer, General Counsel, and Vice President of Personnel all manage cost centers.
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Each of the three product managers that report to the Vice President of Operations (e.g., salty snacks, beverages, and confections) manages a profit center.
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The bottling plant manager, warehouse manager, and distribution manager all manage cost centers that report to the Beverages product manager.
Learning objective number 1 is to prepare a segmented income statement using the contribution margin format and explain the difference between traceable fixed costs and common fixed costs.
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A segment is a part or activity of an organization about which managers would like cost, revenue, or profit data. Examples of segments include divisions of a company, sales territories, individual stores, service centers, manufacturing plants, marketing departments, individual customers, and product lines.
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As this slide illustrates, Superior Foods could segment its business by geographic region.
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Or, Superior Foods could segment its business by customer channel.
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There are two keys to building segmented income statements.
First, a contribution format should be used because it separates fixed from variable costs and it enables the calculation of a contribution margin. The contribution margin is especially useful in decisions involving temporary uses of capacity, such as special orders.
Second, traceable fixed costs should be separated from common fixed costs to enable the calculation of a segment margin.
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A traceable fixed cost of a segment is a fixed cost that is incurred because of the existence of the segment. If the segment were eliminated, the fixed cost would disappear. Examples of traceable fixed costs include the following:
The salary of the Fritos product manager at PepsiCo is a traceable fixed cost of the Fritos business segment of PepsiCo.
The maintenance cost for the building in which Boeing 747s are assembled is a traceable fixed cost of the 747 business segment of Boeing.
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A common fixed cost is a fixed cost that supports the operations of more than one segment, but is not traceable in whole or in part to any one segment. Examples of common fixed costs include the following:
The salary of the CEO of General Motors is a common fixed cost of the various divisions of General Motors.
The cost of heating a Safeway or Kroger grocery store is a common fixed cost of the various departments – groceries, produce, and bakery.
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It is important to realize that the traceable fixed costs of one segment may be a common fixed cost of another segment. For example,
the landing fee paid to land an airplane at an airport is traceable to a particular flight, but it is not traceable to first-class, business-class, and economy-class passengers.
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A segment margin is computed by subtracting the traceable fixed costs of a segment from its contribution margin. The segment margin is a valuable tool for assessing the long-run profitability of a segment.
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Part I
Allocating common costs to segments reduces the value of the segment margin as a guide to long-run segment profitability.
Part II
As a result, common costs should not be allocated to segments.
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Activity-based costing can help identify how costs shared by more than one segment are traceable to individual segments.
For example, assume that three products, a 9-inch, a 12-inch, and an 18-inch pipe, share 10,000 square feet of warehousing space, which is leased at a price of $4 per square foot.
If the 9-inch, 12-inch, and 18-inch pipes occupy 1,000, 4,000, and 5,000 square feet, respectively, then activity-based costing can be used to trace the warehousing costs to the three products as shown.
When using activity-based costing to trace fixed costs to segments, managers must still ask themselves if the traceable costs that they have identified would disappear over time, if the segment disappeared. In this example, if the warehouse was owned rather than leased, perhaps the warehousing costs assigned to a given segment would not disappear if the segment was discontinued.
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Assume that Webber, Inc. has two divisions – the Computer Division and the Television Division.
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The contribution format income statement for the Television Division is as shown. Notice that:
Cost of goods sold consists of variable manufacturing costs, and
Fixed and variable costs are listed in separate sections.
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Also notice that:
Contribution margin is computed by subtracting variable costs from sales; and
The divisional segment margin represents the Television Division’s contribution to overall company profits.
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The Television Division’s results can be rolled into Webber, Inc.’s overall results as shown. Notice that the results of the Television and Computer Divisions sum to the results shown for the whole company.
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The common costs for the company as a whole ($25,000) are not allocated to the divisions. Common costs are not allocated to segments because these costs would remain even if one of the divisions were eliminated.
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The Television Division’s results can also be broken down into smaller segments. This enables us to see how traceable fixed costs of the Television Division can become common costs of smaller segments.
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Assume that the Television Division can be broken down into two major product lines – Regular and Big Screen.
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Assume that the segment margins for these two product lines are as shown.
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Of the $90,000 of fixed costs that were previously traceable to the Television Division, only $80,000 is traceable to the two product lines and $10,000 is a common cost.
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The Financial Accounting Standards Board now requires that companies in the United States include segmented financial data in their annual reports. This ruling has implications for internal segment reporting because:
It mandates that companies report segmented results to shareholders using the same methods that are used for internal segmented reports.
Since the contribution approach to segment reporting does not comply with GAAP, it is likely that some managers will choose to construct their segmented financial statements using the absorption approach to comply with GAAP. The absorption approach hinders internal decision making because it does not distinguish between fixed and variable costs or common and traceable costs.
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The costs assigned to a segment should include all the costs attributable to that segment from the company’s entire value chain. The value chain consists of all major business functions that add value to a company’s products and services.
Since only manufacturing costs are included in product costs under absorption costing, those companies that choose to use absorption costing for segment reporting purposes will omit from their profitability analysis all “upstream” and “downstream” costs. “Upstream” costs include research and development and product design costs. “Downstream” costs include marketing, distribution, and customer service costs. Although these “upstream” and “downstream” costs are not manufacturing costs, they are just as essential to determining product profitability as are manufacturing costs. Omitting them from profitability analysis will result in the under-costing of products.
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Costs that can be traced directly to specific segments of a company should not be allocated to other segments. Rather, such costs should be charged directly to the responsible segment. For example, the rent for a branch office of an insurance company should be charged directly against the branch office rather than included in a company-wide overhead pool and then spread throughout the company.
Some companies allocate costs to segments using arbitrary bases. Costs should be allocated to segments for internal decision making purposes only when the allocation base actually drives the cost being allocated. For example, sales is frequently used to allocate selling and general and administrative expenses to segments. This should only be done if sales drive these period costs.
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Common costs should not be arbitrarily allocated to segments based on the rationale that “someone has to cover the common costs” for two reasons:
First, this practice may make a profitable business segment appear to be unprofitable. If the segment is eliminated the revenue lost may exceed the traceable costs that are avoided.
Second, allocating common fixed costs forces managers to be held accountable for costs that they cannot control.
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Assume that Hoagland's Lakeshore prepared the segmented income statement as shown.
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How much of the common fixed cost of $200,000 can be avoided by eliminating the bar?
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None of it. A common fixed cost cannot be eliminated by dropping one of the segments.
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Suppose square feet is used as the basis for allocating the common fixed cost of $200,000. How much would be allocated to the bar if the bar occupies 1,000 square feet and the restaurant 9,000 square feet?
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The bar would be allocated one tenth of the cost or $20,000.
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If Hoagland's allocates its common costs to the bar and the restaurant, what would be the reported profit of each segment?
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Take a minute and review this slide. Notice that the common costs of $200,000 are allocated to the bar and restaurant.
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Should the bar be eliminated?
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No. The profit was $40,000 before eliminating the bar. If we eliminate the bar, profit drops to $30,000!
Learning objective number 2 is to compute return on investment (ROI) and show how changes in sales, expenses, and assets affect ROI.
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An investment center’s performance is often evaluated using a measure called return on investment (ROI). ROI is defined as net operating income divided by average operating assets.
Net operating income is income before taxes and is sometimes referred to as earnings before interest and taxes (EBIT). Operating assets include cash, accounts receivable, inventory, plant and equipment, and all other assets held for operating purposes.
Net operating income is used in the numerator because the denominator consists only of operating assets.
The operating asset base used in the formula is typically computed as the average operating assets (beginning assets + ending assets/2).
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Most companies use the net book value (i.e., acquisition cost less accumulated depreciation) of depreciable assets to calculate average operating assets. With this approach, ROI mechanically increases over time as the accumulated depreciation increases. Replacing a fully-depreciated asset with a new asset will decrease ROI.
An alternative to using net book value is the use of the gross cost of the asset, which ignores accumulated depreciation. With this approach, ROI does not grow automatically over time, rather it stays constant; thus, replacing a fully-depreciated asset does not adversely affect ROI.
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DuPont pioneered the use of ROI and recognized the importance of looking at the components of ROI, namely margin and turnover.
Margin is computed as shown and is improved by increasing sales or reducing operating expenses. The lower the operating expenses per dollar of sales, the higher the margin earned.
Turnover is computed as shown. It incorporates a crucial area of a manager’s responsibility – the investment in operating assets. Excessive funds tied up in operating assets depress turnover and lower ROI.
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Any increase in ROI must involve at least one of the following – increased sales, reduced operating expenses, or reduced operating assets.
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Assume that Regal Company reports net operating income of $30,000; average operating assets of $200,000; sales of $500,000; and operating expenses of $470,000. What is Regal Company’s ROI?
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Given this information, its current ROI is 15%.
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The first way to increase ROI is to increase sales without any increase in operating assets.
Assume the following. First, Regale's manager was able to increase sales to $600,000 (an increase of 20%). Second, operating expenses increased to $558,000 (an increase of 18.7%). Third, net income increased to $42,000. Fourth, average operating assets remained unchanged.
Let’s calculate the new ROI.
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In this case, the ROI increases from 15% to 21%. Notice, for ROI to increase, the percentage increase in sales must exceed the percentage increase in operating expenses.
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The second way to increase ROI is to decrease operating expenses with no change in sales or operating assets.
Assume that Regale's manager was able to reduce operating expenses by $10,000 without affecting sales or operating assets.
Let’s calculate the new ROI.
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In this case, the ROI increases from 15% to 20%.
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The third way to increase ROI is to decrease operating assets with no change in sales or operating expenses.
Assume that Regale's manager was able to reduce inventories by $20,000 by using just-in-time techniques without affecting sales or operating expenses.
Let’s calculate the new ROI.
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In this case, the ROI increases from 15% to 16.7%.
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The fourth way to increase ROI is to invest in operating assets to increase sales.
Assume that Regale's manager invests $30,000 in a piece of equipment that increases sales by $35,000 while increasing operating expenses by $15,000.
Let’s calculate the new ROI.
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In this case, the ROI increases from 15% to 21.8%.
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It may not be obvious to managers how to increase sales, decrease costs, and decrease investments in a way that is consistent with the company’s strategy. A well-constructed balanced scorecard can provide managers with a road map that indicates how the company intends to increase ROI. A scorecard can answer questions such as:
Which internal business processes should be improved? and
Which customers should be targeted and how will they be attracted and retained at a profit?
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Just telling managers to increase ROI may not be enough. Managers may not know how to increase ROI in a manner that is consistent with the company’s strategy.
This is why ROI is best used as part of a balanced scorecard. A manager who takes over a business segment typically inherits many committed costs over which the manager has no control. This may make it difficult to assess this manager relative to other managers.
A manager who is evaluated based on ROI may reject investment opportunities that are profitable for the whole company but that would have a negative impact on the manager’s performance evaluation.
Learning objective number 3 is to compute residual income and understand its strengths and weaknesses.
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Residual income is the net operating income that an investment center earns above the minimum required return on its assets.
Economic Value Added (EVA) is an adaptation of residual income. We will not distinguish between the two terms in this class.
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The equation for computing residual income is as shown. Notice that this computation differs from ROI. ROI measures net operating income earned relative to the investment in average operating assets. Residual income measures net operating income earned less the minimum required return on average operating assets.
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Assume the information for a division of Zephyr, Inc. is as follows. The Retail Division of Zephyr, Inc. has average operating assets of $100,000 and is required to earn a return of 20% on these assets. In the current period, the division earns $30,000.
Let’s calculate residual income.
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The residual income of $10,000 is computed by subtracting the minimum required return of $20,000 from the actual income of $30,000.
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The residual income approach encourages managers to make investments that are profitable for the entire company but that would be rejected by managers who are evaluated using the ROI formula.
This occurs when the ROI associated with an investment opportunity exceeds the company’s minimum required return but is less than the ROI being earned by the division manager contemplating the investment.
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Redmond Awnings, a division of Wrap-up Corp., has a net operating income of $60,000 and average operating assets of $300,000. The required rate of return for the company is 15%. What is the division’s ROI?
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The ROI is 20%.
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If the manager of the division is evaluated based on ROI, will she want to make an investment of $100,000 that would generate additional net operating income of $80,000 per year?
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No, she would not want to invest in this project because its return is 18%, which would reduce her division’s ROI from 20% to 19.5%.
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The company’s required rate of return is fifteen percent. Would the company want the manager of the Redmond Awnings division to make an investment of $100,000 that would generate additional net operating income of $18,000 per year?
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Yes, she would want to invest in this project because the return on the investment exceeds the minimum required rate of return.
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Review this question. What is the division’s residual income?
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The residual income is $15,000.
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If the manager of the Redmond Awnings division is evaluated based on residual income, will she want to make an investment of $100,000 that would generate additional net operating income of $18,000 per year?
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Yes, she would want to invest in this project because it will increase the residual income by $3,000.
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The residual income approach has one major disadvantage. It cannot be used to compare the performance of divisions of different sizes.
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Recall that the Retail Division of Zephyr had average operating assets of $100,000, a minimum required rate of return of 20%, net operating income of $30,000, and residual income of $10,000.
Assume that the Wholesale Division of Zephyr had average operating assets of $1,000,000, a minimum required rate of return of 20%, net operating income of $220,000, and residual income of $20,000.
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The residual income numbers suggest that the Wholesale Division outperformed the Retail Division because its residual income is $10,000 higher. However, the Retail Division earned an ROI of 30% compared to an ROI of 22% for the Wholesale Division. The Wholesale Division’s residual income is larger than the Retail Division simply because it is a bigger division.
Appendix 12A: Transfer Pricing
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A transfer price is the price charged when one segment of a company provides goods or services to another segment of the company. While domestic transfer prices have no direct effect on the entire company’s reported profit, they can have a dramatic effect on the reported profitability of a division.
The fundamental objective in setting transfer prices is to motivate managers to act in the best interests of the overall company. Sub optimization occurs when managers do not act in the best interests of the overall company or even their own divisions.
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There are three primary approaches to setting transfer prices, namely negotiated transfer prices, transfers at the cost to the selling division, and transfers at market price.
Learning objective number 4 is to determine the range, if any, within which a negotiated transfer price should fall.
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A negotiated transfer price results from discussions between the selling and buying divisions.
Negotiated transfer prices have two advantages.
First, they preserve the autonomy of the divisions, which is consistent with the spirit of decentralization. The managers negotiating the transfer price are likely to have much better information about the potential costs and benefits of the transfer than others in the company.
Second, the range of acceptable transfer prices is the range of transfer prices within which the profits of both divisions participating in the transfer would increase. The lower limit is determined by the selling division. The upper limit is determined by the buying division.
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Assume the information as shown with respect to Imperial Beverages and Pizza Maven (both companies are owned by Harris and Louder).
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The selling division’s (Imperial Beverages) lowest acceptable transfer price is calculated as shown.
The buying division’s (Pizza Maven) highest acceptable transfer price is calculated as shown.
If Pizza Maven had no outside supplier for ginger beer, then its highest acceptable transfer price would be equal to the amount it expects to earn by selling the ginger beer, net of its own expenses.
Let’s calculate the lowest and highest acceptable transfer prices under three scenarios.
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Part I
If Imperial Beverages has sufficient idle capacity (3,000 barrels) to satisfy Pizza Maven’s demands (2,000 barrels) without sacrificing sales to other customers, then the lowest and highest possible transfer prices will be computed as follows.
Part II
The lowest acceptable transfer price, as determined by the seller, is 8 pounds.
Part III
The highest acceptable transfer price, as determined by the buyer, is 18 pounds. Therefore, the range of acceptable transfer prices is 8 pounds to 18 pounds.
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Part I
If Imperial Beverages has no idle capacity and must sacrifice other customer orders (2,000 barrels) to meet the demands of Pizza Maven (2,000 barrels), then the lowest and highest possible transfer prices will be computed as follows.
Part II
The lowest acceptable transfer price, as determined by the seller, is 20 pounds.
Part III
The highest acceptable transfer price, as determined by the buyer, is 18 pounds. Therefore, there is no range of acceptable transfer prices. This is a desirable outcome for Harris Louder because it would be illogical to give up sales of 20 pounds to save costs of 18 pounds.
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Part I
If Imperial Beverages has some idle capacity (1,000 barrels) and must sacrifice other customer orders (1,000 barrels) to meet the demands of Pizza Maven (2,000 barrels), then the lowest and highest possible transfer prices will be computed as follows.
Part II
The lowest acceptable transfer price, as determined by the seller, is 14 pounds.
Part III
The highest acceptable transfer price, as determined by the buyer, is 18 pounds. Therefore, the range of acceptable transfer prices is 14 pounds to 18 pounds.
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If a transfer within the company would result in higher overall profits for the company, there is always a range of transfer prices within which both the selling and buying divisions would have higher profits if they agree to the transfer. Nonetheless, if managers are pitted against each other rather than against their past performance or reasonable benchmarks, a no cooperative atmosphere is almost guaranteed. Thus, negotiations often break down even though it would be in both parties’ best interests to agree to a transfer price. Given the disputes that often accompany the negotiation process, most companies rely on some other means of setting transfer prices.
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Many companies set transfer prices at either the variable cost or full (absorption) cost incurred by the selling division. The drawbacks of this approach include:
Using full cost as a transfer price can lead to suboptimization because it does not distinguish between variable costs, which may be relevant to the transfer pricing decision, and fixed costs, which may be irrelevant.
If cost is used as the transfer price, the selling division will never show a profit on any internal transfer. The only division that shows a profit is the division that makes the final sale to an outside party.
Cost-based transfer prices do not provide incentives to control costs. If the actual costs of one division are passed on to the next, there is little incentive for anyone to work on reducing costs.
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A market price (i.e., the price charged for an item on the open market) is often regarded as the best approach to the transfer pricing problem.
It works best when the product or service is sold in its present form to outside customers and the selling division has no idle capacity.
With no idle capacity the real cost of the transfer from the company’s perspective is the opportunity cost of the lost revenue on the outside sale.
It does not work well when the selling division has idle capacity. In this case, market-based transfer prices are likely to be higher than the variable cost per unit of the selling division. Consequently, the buying division may make pricing and other decisions based on incorrect, market-based cost information rather than the true variable cost incurred by the company as a whole.
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The principles of decentralization suggest that companies should grant managers autonomy to set transfer prices and to decide whether to sell internally or externally. While subordinate managers may occasionally make suboptimal decisions, top managers should allow their subordinates to control their own destiny – even to the extent of granting subordinate managers the right to make mistakes.
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The objectives of domestic transfer pricing include: creating greater divisional autonomy; providing greater motivation for managers; enabling better performance evaluation; and establishing better goal congruence.
The objectives of international transfer pricing include: lessen taxes, duties and tariffs; lessen foreign exchange risks; improve competitive position; and improve relations with foreign governments.
Appendix 12B: Service Department Charges
Learning objective number 5 is to charge operating departments for services provided by service departments.
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Most large organizations have both operating departments and service departments. The central purposes of the organization are carried out in the operating departments. In contrast, service departments do not directly engage in operating activities. This appendix discusses why and how service department costs are allocated to operating departments.
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Service department costs are charged to operating departments for a variety of reasons including:
1. To encourage operating departments to wisely use service department resources.
2. To provide operating departments with more complete cost data for making decisions.
3. To help measure the profitability of operating departments.
4. To create an incentive for service departments to operate efficiently.
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The service department charges considered in this appendix can be viewed as a transfer price that is charged for services provided by service departments to operating departments.
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Whenever possible, variable and fixed service department costs should be charged separately to provide more useful data for planning and control of departmental operations.
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Variable service department costs should be charged to consuming departments according to whatever activity causes the incurrence of the cost.
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Fixed costs should be charged to consuming departments in predetermined lump-sum amounts that are based on the consuming departments’ peak-period or long-run average servicing needs. Importantly, fixed cost allocations:
Are based on the amount of capacity each consuming department requires.
Should not vary from period to period.
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Budgeted variable and fixed service department costs (rather than actual costs) should be charged to operating departments. Actual costs may contain inefficiencies that should not be charged to operating departments. Variable service department costs should be charged using a predetermined rate applied to the actual services consumed. The lump-sum amount of fixed costs should be based on budgeted fixed costs, not actual fixed costs.
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Let’s look at an example of allocating costs by behavior. Sipco has one service department, maintenance, and two operating departments: Cutting and Assembly. Variable maintenance costs are budgeted at $0.60 per machine hour. Fixed maintenance costs are budgeted at $200,000 per year.
Both planned and actual hours are given. We will allocate variable costs at the beginning of the year using planned hours and then we will allocate variable costs at the end of the year using actual hours. We will allocate fixed costs based on percent of peak capacity required.
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Variable cost allocations are made at the beginning of the year by multiplying the budgeted variable rate of $0.60 per machine hour by the planned hours for each operating department.
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Fixed service department costs are allocated to the operating departments by multiplying the percent of peak-period capacity required by each department times the $200,000 of budgeted fixed costs.
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Let’s take a quick check and see how we are doing on allocating costs by behavior. Foster City has an ambulance service that is used by the two public hospitals in the city. Variable ambulance costs are budgeted at $4.20 per mile. Fixed ambulance costs are budgeted at $120,000 per year. Data relating to the current year are illustrated in the table on the slide. You may want to refer back to this screen as you work through the question on the next slide.
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How much ambulance service cost will be allocated to Mercy Hospital at the beginning of the year?
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Variable cost allocations are made at the beginning of the year by multiplying the budgeted variable rate of $4.20 per mile by the planned number of miles for each hospital.
Fixed service department costs are allocated to the hospitals by multiplying the percent of peak-period capacity required by each hospital times the $120,000 of budgeted fixed costs.
So, the total cost allocated to Mercy Hospital at the beginning of the year is $117,000.
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Rather than charge service department fixed costs to operating departments in predetermined lump-sum amounts, some companies allocate them using a variable allocation base that fluctuates from period to period. This is a pitfall because it creates a situation where the fixed costs allocated to one operating department are heavily influenced by what happens in other operating departments.
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Let’s look at an example to illustrate the pitfalls of allocating fixed costs using a variable allocation base.
Colby Products has two sales territories, the Eastern Territory and the Western Territory. Both sales territories are serviced by one auto service center whose costs are all fixed. Contrary to good practice, Colby allocates the fixed service center costs to the sales territories on the basis of actual miles driven (a variable base).
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On your screen, you see data for miles driven in each sales territory and the service center’s $120,000 fixed cost. The Western territory maintained an activity level of 1,500,000 miles in both years. The Eastern division dropped from 1,500,000 miles driven in year 1 to 900,000 miles driven in year 2. Allocation rates based on total miles driven are shown for both years. The total number of miles driven in year 2 is less, so the allocation rate per mile in year 2 is higher.
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We allocate the $120,000 service center cost by multiplying the allocation rate per mile by the number of miles driven in each territory. The two sales territories share the service center’s costs equally because the miles driven in each territory are equal in the first year.
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Again we allocate the $120,000 service center cost by multiplying the allocation rate per mile by the number of miles driven in each territory. In year 2, the costs allocated to the Western territory increase by $15,000, despite the fact that the miles driven within the Western territory are the same as in year 1. Western’s costs for year 2 increased because Eastern's miles driven declined in year 2.
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While sales dollars is a popular allocation base for service department costs, it is a poor choice because sales dollars fluctuate from period to period, and the costs being allocated are often largely fixed. Allocation of service department costs based on sales can create a situation where the sales of one department influence the service department costs allocated to other departments.
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Let’s look at an example to illustrate the pitfalls of allocating service department costs based on sales revenue.
Clothier Inc., a men’s clothing store, has one service department and three sales departments, Suits, Shoes, and Accessories. Service department costs total $60,000 for both years in the example. Contrary to good practice, Clothier allocates the service department costs based on sales.
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Part I
We will focus on the Suit Department in this example. In the first year, Suit Department sales are $260,000 of the $400,000 of total sales. Two hundred sixty thousand dollars is 65% of $400,000. We allocate the service department costs to the Suit Department by multiplying 65% times $60,000. The result is $39,000.
Part II
In the next year, the manager of the Suit Department increased sales by $100,000. Sales in the other departments are unchanged. Let’s allocate the $60,000 service department cost for the second year given the sales increase.
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Part I
In the second year, Suit Department sales are $360,000 of the $500,000 of total sales. Three hundred sixty thousand dollars is 72% of $500,000. We allocate the service department costs to the Suit Department by multiplying 72% times $60,000. The result is $43,200.
Part II
The allocation of service department costs to the Suit Department increased by $4,200. The allocation of service department costs to the other two departments decreased. The Suit Department manager is likely to complain because his department is being forced to bear a larger share of service department costs simply because of his efforts to increase sales.