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Rev.Confirming Pages 1 Managerial Accounting and Cost Concepts << A LOOK BACK A LOOK AT THIS CHAPTER A LOOK AHEAD >> In the Prologue, we established the business context within which management accounting operates. We discussed topics such as strategy, Lean Production, and corporate governance that influence how managers perform their jobs. In addition, we introduced Good Vibrations, an international retailer of music CDs, and learned about its organizational structure. After describing the three major activities of managers in the context of Good Vibrations, this chapter compares and contrasts financial and managerial accounting. We define many of the terms that are used to classify costs in business. Because these terms will be used throughout the text, you should be sure that you are familiar with each of them. Chapters 2, 3, and 4 describe costing systems that are used to compute product costs. Chapter 2 describes job-order costing. Chapter 3 describes activity-based costing, an elaboration of job-order costing. Chapter 4 covers process costing. CHAPTER OUTLINE The Work of Management and the Need for Managerial Accounting Information Cost Classifications on Financial Statements ■ The Balance Sheet ■ Planning ■ The Income Statement ■ Directing and Motivating ■ Schedule of Cost of Goods Manufactured ■ Controlling ■ The End Results of Managers’ Activities ■ The Planning and Control Cycle Comparison of Financial and Managerial Accounting ■ Emphasis on the Future ■ Relevance of Data ■ Less Emphasis on Precision ■ Segments of an Organization ■ Generally Accepted Accounting Principles (GAAP) ■ Managerial Accounting—Not Mandatory General Cost Classifications ■ Manufacturing Costs ■ Nonmanufacturing Costs Product Costs versus Period Costs ■ Product Costs ■ Period Costs ■ Prime Cost and Conversion Cost bre27076_ch01_026-073.indd 26 Product Cost Flows ■ Inventoriable Costs ■ An Example of Cost Flows Cost Classifications for Predicting Cost Behavior ■ Variable Cost ■ Fixed Cost Cost Classifications for Assigning Costs to Cost Objects ■ Direct Cost ■ Indirect Cost Cost Classifications for Decision Making ■ Differential Cost and Revenue ■ Opportunity Cost ■ Sunk Cost 7/25/09 5:55:41 PM Confirming Pages LEARNING OBJECTIVES After studying Chapter 1, you should be able to: LO1 Identify the major differences and similarities between financial and managerial accounting. LO2 Identify and give examples of each of the three basic manufacturing cost categories. LO3 Distinguish between product costs and period costs and give examples of each. LO4 Prepare an income statement including calculation of the cost of goods sold. LO5 Prepare a schedule of cost of goods manufactured. DECISION FEATURE Management Accounting: It’s More than Just Crunching Numbers “Creating value through values” is the credo of today’s management accountant. It means that management accountants should maintain an unwavering commitment to ethical values while using their knowledge and skills to influence decisions that create value for organizational stakeholders. These skills include managing risks and implementing strategy through planning, budgeting and forecasting, and decision support. Management accountants are strategic business partners who understand the financial and operational sides of the business. They report and analyze not only financial measures, but also nonfinancial measures of process performance and corporate social performance. Think of these responsibilities as profits (financial statements), process (customer focus and satisfaction), people (employee learning and satisfaction), and planet (environmental stewardship). LO6 Understand the differences between variable costs and fixed costs. LO7 Understand the differences between direct and indirect costs. LO8 Understand cost classifications used in making decisions: differential costs, opportunity costs, and sunk costs. Source: Conversation with Jeff Thomson, president and CEO of the Institute of Management Accountants. 27 bre27076_ch01_026-073.indd 27 7/3/09 10:37:58 AM Confirming Pages 28 Chapter 1 T his chapter begins by describing the work of management and the need for managerial accounting information followed by a discussion of the differences and similarities between financial and managerial accounting. Next, we explain that in managerial accounting, the term cost is used in many different ways. The reason is that there are many types of costs, and these costs are classified differently according to the immediate needs of management. For example, managers may want cost data to prepare external financial reports, to prepare planning budgets, or to make decisions. Each different use of cost data demands a different classification and definition of costs. For example, the preparation of external financial reports requires the use of historical cost data, whereas decision making may require predictions about future costs. This notion of different costs for different purposes is a critically important aspect of managerial accounting. THE WORK OF MANAGEMENT AND THE NEED FOR MANAGERIAL ACCOUNTING INFORMATION Every organization—large and small—has managers. Someone must be responsible for formulating strategy, making plans, organizing resources, directing personnel, and controlling operations. This is true of the Bank of America, the Peace Corps, the University of Illinois, the Red Cross, and the Coca-Cola Corporation, as well as the local 7-Eleven convenience store. In this chapter, we will use a particular organization—Good Vibrations, Inc.—to illustrate the work of management. What we have to say about the management of Good Vibrations, however, is very general and can be applied to virtually any organization. Good Vibrations runs a chain of retail outlets that sells a full range of music CDs. The chain’s stores are concentrated in Pacific Rim cities such as Sydney, Singapore, Hong Kong, Beijing, Tokyo, and Vancouver. The company has found that the best way to generate sales and profits is to create an exciting shopping environment following a customer intimacy strategy. Consequently, the company puts a great deal of effort into planning the layout and decor of its stores—which are often quite large and extend over several floors in key downtown locations. Management knows that different types of clientele are attracted to different kinds of music. The international rock section is generally decorated with bold, brightly colored graphics, and the aisles are purposely narrow to create a crowded feeling much like one would experience at a popular nightclub on Friday night. In contrast, the classical music section is wood-paneled and fully sound insulated, with the rich, spacious feeling of a country club meeting room. Managers at Good Vibrations like managers everywhere, carry out three major activities—planning, directing and motivating, and controlling. Planning involves establishing a basic strategy, selecting a course of action, and specifying how the action will be implemented. Directing and motivating involves mobilizing people to carry out plans and run routine operations. Controlling involves ensuring that the plan is actually carried out and is appropriately modified as circumstances change. Management accounting information plays a vital role in these basic management activities—but most particularly in the planning and control functions. Planning An important part of planning is to identify alternatives and then to select from among the alternatives the one that best fits the organization’s strategy and objectives. The basic objective of Good Vibrations is to earn profits for the owners of the company by providing superior service at competitive prices in as many markets as possible. To further this strategy, every year top management carefully considers a range of options, or alternatives, for expanding into new geographic markets. This year management is considering opening new stores in Shanghai, Los Angeles, and Auckland. bre27076_ch01_026-073.indd 28 7/3/09 10:38:50 AM Confirming Pages Managerial Accounting and Cost Concepts 29 When making this choice, management must balance the potential benefits of opening a new store against the costs and demands on the company’s resources. Management knows from bitter experience that opening a store in a major new market is a big step that cannot be taken lightly. It requires enormous amounts of time and energy from the company’s most experienced, talented, and busy professionals. When the company attempted to open stores in both Beijing and Vancouver in the same year, resources were stretched too thinly. The result was that neither store opened on schedule, and operations in the rest of the company suffered. Therefore, Good Vibrations plans very carefully before entering a new market. Among other data, top management looks at the sales volumes, profit margins, and costs of the company’s established stores in similar markets. These data, supplied by the management accountant, are combined with projected sales volume data at the proposed new locations to estimate the profits that would be generated by the new stores. In general, virtually all important alternatives considered by management in the planning process impact revenues or costs, and management accounting data are essential in estimating those impacts. After considering all of the alternatives, Good Vibrations’ top management decided to open a store in the booming Shanghai market in the third quarter of the year, but to defer opening any other new stores to another year. As soon as this decision was made, detailed plans were drawn up for all parts of the company that would be involved in the Shanghai opening. For example, the Personnel Department’s travel budget was increased because it would be providing extensive on-site training to the new personnel hired in Shanghai. As in the case of the Personnel Department, the plans of management are often expressed formally in budgets, and the term budgeting is generally used to describe this part of the planning process. Budgets are usually prepared under the direction of the controller, who is the manager in charge of the Accounting Department. Typically, budgets are prepared annually and represent management’s plans in specific, quantitative terms. In addition to a travel budget, the Personnel Department will be given goals in terms of new hires, courses taught, and detailed breakdowns of expected expenses. Similarly, the store managers will be given targets for sales volume, profit, expenses, pilferage losses, and employee training. Good Vibrations’ management accountants will collect, analyze, and summarize these data in the form of budgets. Directing and Motivating In addition to planning for the future, managers oversee day-to-day activities and try to keep the organization functioning smoothly. This requires motivating and directing people. Managers assign tasks to employees, arbitrate disputes, answer questions, solve on-the-spot problems, and make many small decisions that affect customers and employees. In effect, directing is that part of a manager’s job that deals with the routine and the here and now. Managerial accounting data, such as daily sales reports, are often used in this type of day-to-day activity. Controlling In carrying out the control function, managers seek to ensure that the plan is being followed. Feedback, which signals whether operations are on track, is the key to effective control. In sophisticated organizations, this feedback is provided by various detailed reports. One of these reports, which compares budgeted to actual results, is called a performance report. Performance reports suggest where operations are not proceeding as planned and where some parts of the organization may require additional attention. For example, the manager of the new Shanghai store will be given sales volume, profit, and expense targets. As the year progresses, performance reports will be constructed that compare actual sales volume, profit, and expenses to the targets. If the actual results fall below the targets, top management will be alerted that the Shanghai store requires more attention. Experienced personnel can be flown in to help the new manager, or top management may conclude that bre27076_ch01_026-073.indd 29 7/3/09 10:38:50 AM Confirming Pages 30 Chapter 1 EXHIBIT 1–1 The Planning and Control Cycle Formulating long- and short-term plans (Planning) Comparing actual to planned performance (Controlling) Decision Making Implementing plans (Directing and Motivating) Measuring performance (Controlling) its plans need to be revised. As we shall see in later chapters, one of the central purposes of managerial accounting is to provide this kind of feedback to managers. The End Results of Managers’ Activities When a customer enters a Good Vibrations store, the results of management’s planning, directing and motivating, and controlling activities will be evident in the many details that make the difference between a pleasant and an irritating shopping experience. The store will be clean, fashionably decorated, and logically laid out. Featured artists’ videos will be displayed on TV monitors throughout the store, and the background rock music will be loud enough to send older patrons scurrying for the classical music section. Popular CDs will be in stock, and the latest hits will be available for private listening on earphones. Specific titles will be easy to find. Regional music, such as CantoPop in Hong Kong, will be prominently featured. Checkout clerks will be alert, friendly, and efficient. In short, what the customer experiences doesn’t simply happen; it is the result of the efforts of managers who must visualize and then fit together the processes that are needed to get the job done. The Planning and Control Cycle Exhibit 1–1 depicts the work of management in the form of the planning and control cycle. The planning and control cycle involves the smooth flow of management activities from planning through directing and motivating, controlling, and then back to planning again. All of these activities involve decision making, which is the hub around which the other activities revolve. COMPARISON OF FINANCIAL AND MANAGERIAL ACCOUNTING LEARNING OBJECTIVE 1 Identify the major differences and similarities between financial and managerial accounting. bre27076_ch01_026-073.indd 30 Managerial accounting is concerned with providing information to managers—that is, the people inside an organization who direct and control its operations. In contrast, financial accounting is concerned with providing information to stockholders, creditors, and others who are outside the organization. This contrast in orientation results in a number of major differences between financial and managerial accounting, even though they often rely on the same underlying financial data. Exhibit 1–2 summarizes these differences. As shown in Exhibit 1–2, financial and managerial accounting differ not only in their user orientation but also in their emphasis on the past and the future, in the type of data provided to users, and in several other ways. These differences are discussed in the following paragraphs. 7/3/09 10:38:51 AM Confirming Pages Managerial Accounting and Cost Concepts EXHIBIT 1–2 31 Comparison of Financial and Managerial Accounting Accounting • Recording • Estimating • Organizing • Summarizing Financial Accounting Financial and Operational Data Managerial Accounting • Reports to those outside the organization: Owners Creditors Tax authorities Regulators • Reports to those inside the organization for: Planning Directing and motivating Controlling Performance evaluation • Emphasizes financial consequences of past activities. • Emphasizes decisions affecting the future. • Emphasizes objectivity and verifiability. • Emphasizes relevance. • Emphasizes precision. • Emphasizes timeliness. • Emphasizes summary data concerning the entire organization. • Emphasizes detailed segment reports about departments, products, and customers. • Must follow GAAP. • Need not follow GAAP. • Mandatory for external reports. • Not mandatory. Emphasis on the Future Because planning is such an important part of the manager’s job, managerial accounting has a strong future orientation. In contrast, financial accounting primarily summarizes past financial transactions. These summaries may be useful in planning, but only to a point. The future is not simply a reflection of what has happened in the past. Changes are constantly taking place in economic conditions, customer needs and desires, competitive conditions, and so on. All of these changes demand that the manager’s planning be based in large part on estimates of what will happen rather than on summaries of what has already happened. Relevance of Data Financial accounting data should be objective and verifiable. However, for internal uses managers need information that is relevant even if it is not completely objective or verifiable. By relevant, we mean appropriate for the problem at hand. For example, it is difficult to verify what the sales volume is going to be for a proposed new store at Good Vibrations, but this is exactly the type of information that is most useful to managers. Managerial accounting should be flexible enough to provide whatever data are relevant for a particular decision. bre27076_ch01_026-073.indd 31 7/3/09 10:38:55 AM Confirming Pages 32 Chapter 1 Less Emphasis on Precision Making sure that dollar amounts are accurate down to the last dollar or penny takes time and effort. While that kind of accuracy is required for external reports, most managers would rather have a good estimate immediately than wait for a more precise answer later. For this reason, managerial accountants often place less emphasis on precision than financial accountants do. For example, in a decision involving hundreds of millions of dollars, estimates that are rounded off to the nearest million dollars are probably good enough. In addition to placing less emphasis on precision than financial accounting, managerial accounting places much more weight on nonmonetary data. For example, data about customer satisfaction may be routinely used in managerial accounting reports. Segments of an Organization Financial accounting is primarily concerned with reporting for the company as a whole. By contrast, managerial accounting focuses much more on the parts, or segments, of a company. These segments may be product lines, sales territories, divisions, departments, or any other categorization that management finds useful. Financial accounting does require some breakdowns of revenues and costs by major segments in external reports, but this is a secondary emphasis. In managerial accounting, segment reporting is the primary emphasis. Generally Accepted Accounting Principles (GAAP) Financial accounting statements prepared for external users must comply with generally accepted accounting principles (GAAP). External users must have some assurance that the reports have been prepared in accordance with a common set of ground rules. These common ground rules enhance comparability and help reduce fraud and misrepresentation, but they do not necessarily lead to the type of reports that would be most useful in internal decision making. For example, if management at Good Vibrations is considering selling land to finance a new store, they need to know the current market value of the land. However, GAAP requires that the land be stated at its original, historical cost on financial reports. The more relevant data for the decision—the current market value—is ignored under GAAP. While GAAP continues to shape financial reporting in the United States, most companies throughout the world are now communicating with their stakeholders using a different set of rules called International Financial Reporting Standards (IFRS). To better align U.S. reporting standards with the global community, the Securities and Exchange Commission (SEC) may eventually require all publicly traded companies in the U.S. to comply with IFRS instead of GAAP.1 Regardless of what the SEC decides to do, it is important to understand that managerial accounting is not bound by GAAP or IFRS. Managers set their own rules concerning the content and form of internal reports. The only constraint is that the expected benefits from using the information should outweigh the costs of collecting, analyzing, and summarizing the data. Nevertheless, as we shall see in subsequent chapters, it is undeniably true that financial reporting requirements have heavily influenced management accounting practice. Managerial Accounting—Not Mandatory Financial accounting is mandatory; that is, it must be done. Various outside parties such as the Securities and Exchange Commission (SEC) and the tax authorities require periodic financial statements. Managerial accounting, on the other hand, is not mandatory. A company is completely free to do as much or as little as it wishes. No regulatory bodies or other outside agencies specify what is to be done, or, for that matter, whether anything 1 The SEC may permit some companies in industries composed mainly of IFRS-reporting entities to adopt IFRS for calendar years ending on or after December 15, 2009. If the SEC decides to mandate IFRS for all publicly traded companies, then the three-year transitional process will begin in 2014. bre27076_ch01_026-073.indd 32 7/3/09 10:39:00 AM Confirming Pages Managerial Accounting and Cost Concepts 33 is to be done at all. Because managerial accounting is completely optional, the important question is always, “Is the information useful?” rather than, “Is the information required?” As explained earlier, the work of management focuses on planning, which includes setting objectives and outlining how to attain these objectives, and control, which includes the steps taken to ensure that objectives are realized. To carry out these planning and control responsibilities, managers need information about the organization. From an accounting point of view, this information often relates to the costs of the organization. In managerial accounting, the term cost is used in many different ways. The reason is that there are many types of costs, and these costs are classified differently according to the immediate needs of management. For example, managers may want cost data to prepare external financial reports, to prepare planning budgets, or to make decisions. Each different use of cost data may demand a different kind of cost. For example, historical cost data is used to prepare external financial reports whereas decision making may require current cost data. GENERAL COST CLASSIFICATIONS We have chosen to start our discussion of cost concepts by focusing on manufacturing companies, because they are involved in most of the activities found in other types of organizations. Manufacturing companies such as Texas Instruments, Ford, and DuPont are involved in acquiring raw materials, producing finished goods, marketing, distributing, billing, and almost every other business activity. Therefore, an understanding of costs in a manufacturing company can be very helpful in understanding costs in other types of organizations. In this chapter, we introduce cost concepts that apply to diverse organizations including fast-food outlets such as Kentucky Fried Chicken, Pizza Hut, and Taco Bell; movie studios such as Disney, Paramount, and United Artists; consulting firms such as Accenture and McKinsey; and your local hospital. The exact terms used in these industries may not be the same as those used in manufacturing, but the same basic concepts apply. With some slight modifications, these basic concepts also apply to merchandising companies such as Wal-Mart, The Gap, 7-Eleven, and Nordstrom. With that in mind, let’s begin our discussion of manufacturing costs. Manufacturing Costs Most manufacturing companies separate manufacturing costs into three broad categories: direct materials, direct labor, and manufacturing overhead. A discussion of each of these categories follows. Direct Materials The materials that go into the final product are called raw mate- LEARNING OBJECTIVE 2 Identify and give examples of each of the three basic manufacturing cost categories. rials. This term is somewhat misleading because it seems to imply unprocessed natural resources like wood pulp or iron ore. Actually, raw materials refer to any materials that are used in the final product; and the finished product of one company can become the raw materials of another company. For example, the plastics produced by Du Pont are a raw material used by Compaq Computer in its personal computers. One study of 37 manufacturing industries found that materials costs averaged about 55% of sales revenues.2 Raw materials may include both direct and indirect materials. Direct materials are those materials that become an integral part of the finished product and whose costs can be conveniently traced to the finished product. This would include, for example, the seats that Airbus purchases from subcontractors to install in its commercial aircraft and the tiny electric motor Panasonic uses in its DVD players. Sometimes it isn’t worth the effort to trace the costs of relatively insignificant materials to end products. Such minor items would include the solder used to make electrical connections in a Sony TV or the glue used to assemble an Ethan Allen chair. 2 Germain Boer and Debra Jeter, “What’s New About Modern Manufacturing? Empirical Evidence on Manufacturing Cost Changes,” Journal of Management Accounting Research, volume 5, pp. 61–83. bre27076_ch01_026-073.indd 33 7/3/09 10:39:01 AM Confirming Pages 34 Chapter 1 Materials such as solder and glue are called indirect materials and are included as part of manufacturing overhead, which is discussed later in this section. Direct Labor Direct labor consists of labor costs that can be easily (i.e., physically and conveniently) traced to individual units of product. Direct labor is sometimes called touch labor because direct labor workers typically touch the product while it is being made. Examples of direct labor include assembly-line workers at Toyota, carpenters at the home builder Kaufman and Broad, and electricians who install equipment on aircraft at Bombardier Learjet. Labor costs that cannot be physically traced to particular products, or that can be traced only at great cost and inconvenience, are termed indirect labor. Just like indirect materials, indirect labor is treated as part of manufacturing overhead. Indirect labor includes the labor costs of janitors, supervisors, materials handlers, and night security guards. Although the efforts of these workers are essential, it would be either impractical or impossible to accurately trace their costs to specific units of product. Hence, such labor costs are treated as indirect labor. IN BUSINESS Is Sending Jobs Overseas Always a Good Idea? In recent years, many companies have sent jobs from high labor-cost countries such as the United States to lower labor-cost countries such as India and China. But is chasing labor cost savings always the right thing to do? In manufacturing, the answer is no. Typically, total direct labor costs are around 7% to 15% of cost of goods sold. Because direct labor is such a small part of overall costs, the labor savings realized by “offshoring” jobs can easily be overshadowed by a decline in supply chain efficiency that occurs simply because production facilities are located farther from the ultimate customers. The increase in inventory carrying costs and obsolescence costs coupled with slower response to customer orders, not to mention foreign currency exchange risks, can more than offset the benefits of employing geographically dispersed low-cost labor. One manufacturer of casual wear in Los Angeles, California, understands the value of keeping jobs close to home in order to maintain a tightly knit supply chain. The company can fill orders for as many as 160,000 units in 24 hours. In fact, the company carries less than 30 days’ inventory and is considering fabricating clothing only after orders are received from customers rather than attempting to forecast what items will sell and making them in advance. How would they do this? The company’s entire supply chain—including weaving, dyeing, and sewing—is located in downtown Los Angeles, eliminating shipping delays. Source: Robert Sternfels and Ronald Ritter, “When Offshoring Doesn’t Make Sense,” The Wall Street Journal, October 19, 2004, p. B8. Major shifts have taken place and continue to take place in the structure of labor costs in some industries. Sophisticated automated equipment, run and maintained by skilled indirect workers, is increasingly replacing direct labor. Indeed, direct labor averages only about 10% of sales revenues in manufacturing. In some companies, direct labor has become such a minor element of cost that it has disappeared altogether as a separate cost category. Nevertheless, the vast majority of manufacturing and service companies throughout the world continue to recognize direct labor as a separate cost category. Manufacturing Overhead Manufacturing overhead, the third element of manufacturing cost, includes all manufacturing costs except direct materials and direct labor. Manufacturing overhead includes items such as indirect materials; indirect labor; maintenance and repairs on production equipment; and heat and light, property taxes, depreciation, and insurance on manufacturing facilities. A company also incurs costs for heat and light, property taxes, insurance, depreciation, and so forth, associated with its selling and administrative functions, but these costs are not included as part bre27076_ch01_026-073.indd 34 7/3/09 10:39:04 AM Confirming Pages Managerial Accounting and Cost Concepts 35 of manufacturing overhead. Only those costs associated with operating the factory are included in manufacturing overhead. Across large numbers of manufacturing companies, manufacturing overhead averages about 16% of sales revenues.3 Various names are used for manufacturing overhead, such as indirect manufacturing cost, factory overhead, and factory burden. All of these terms are synonyms for manufacturing overhead. Nonmanufacturing Costs Nonmanufacturing costs are often divided into two categories: (1) selling costs and (2) administrative costs. Selling costs include all costs that are incurred to secure customer orders and get the finished product to the customer. These costs are sometimes called order-getting and order-filling costs. Examples of selling costs include advertising, shipping, sales travel, sales commissions, sales salaries, and costs of finished goods warehouses. Administrative costs include all costs associated with the general management of an organization rather than with manufacturing or selling. Examples of administrative costs include executive compensation, general accounting, secretarial, public relations, and similar costs involved in the overall, general administration of the organization as a whole. Nonmanufacturing costs are also often called selling, general, and administrative (SG&A) costs or just selling and administrative costs. PRODUCT COSTS VERSUS PERIOD COSTS In addition to classifying costs as manufacturing or nonmanufacturing costs, there are other ways to look at costs. For instance, they can also be classified as either product costs or period costs. To understand the difference between product costs and period costs, we must first discuss the matching principle from financial accounting. Generally, costs are recognized as expenses on the income statement in the period that benefits from the cost. For example, if a company pays for liability insurance in advance for two years, the entire amount is not considered an expense of the year in which the payment is made. Instead, one-half of the cost would be recognized as an expense each year. The reason is that both years—not just the first year—benefit from the insurance payment. The unexpensed portion of the insurance payment is carried on the balance sheet as an asset called prepaid insurance. The matching principle is based on the accrual concept that costs incurred to generate a particular revenue should be recognized as expenses in the same period that the revenue is recognized. This means that if a cost is incurred to acquire or make something that will eventually be sold, then the cost should be recognized as an expense only when the sale takes place—that is, when the benefit occurs. Such costs are called product costs. LEARNING OBJECTIVE 3 Distinguish between product costs and period costs and give examples of each. Product Costs For financial accounting purposes, product costs include all costs involved in acquiring or making a product. In the case of manufactured goods, these costs consist of direct materials, direct labor, and manufacturing overhead. Product costs “attach” to units of product as the goods are purchased or manufactured, and they remain attached as the goods go into inventory awaiting sale. Product costs are initially assigned to an inventory account on the balance sheet. When the goods are sold, the costs are released from inventory as expenses (typically called cost of goods sold) and matched against sales revenue. Because product costs are initially assigned to inventories, they are also known as inventoriable costs. 3 J. Miller, A. DeMeyer, and J. Nakane, Benchmarking Global Manufacturing (Homewood, IL: Richard D. Irwin), Chapter 2. The Boer and Jeter article cited earlier contains a similar finding concerning the magnitude of manufacturing overhead. bre27076_ch01_026-073.indd 35 7/3/09 10:39:04 AM