2
An CHAPTER Introduction to Cost Terms
and Purposes
Learning Objectives
After studying this chapter, a student should be able to:
1.
Identify and distinguish the logic underlying three cost classification systems
derived from financial accounting information: period and inventoriable, direct and
indirect, prime and conversion
2.
Apply cost information to produce detailed financial schedules to illustrate how the
asset value of inventories expires into cost of goods sold reported on the income
statement
3.
Differentiate fixed costs from variable costs using the management-accounting
cost-classification system
4.
Explain the limitations that the use of average or unit costs impose on managerial
decision making
5.
Apply management-accounting logic to classify costs for use in managerial
decisions
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CHAPTER OVERVIEW
Strategic decisions involve cost information that is not necessarily routine financial
information. Different decisions require different cost information. Thus, the phrase
different costs for different purposes
Product costing needs information distinguished by three classifications: period and
inventoriable, direct and indirect, and prime and conversion. This information can be
used to determine cost of a unit of production or unit product cost.
When the cost of inventory is appropriately determined then the cost of a goods sold out
of that inventory will be more accurate. This provides management with information on
the relationship of profit to sales and the income reported on the income statement.
Management looks at those costs as variable per unit or fixed so that extrapolations or
what if hypotheses can be made within the limitations of the assumptions about the
behaviour of total costs within the relevant range of activity.
Cost objects, direct costs and indirect costs are defined and illustrated. The concepts of
cost tracing and cost allocation are introduced. Cost drivers and cost management are
defined and their interrelationship described. The relationships of cost drivers, variable
costs, and fixed costs are explained. Several approaches are provided to illustrate the
concept of cost behaviour. Major assumptions underlying the definitions of variable and
fixed costs are given and the relevant range is defined. Uses and limitations of unit costs
are explained. Graphs are used to depict these important relationships.
Manufacturing firms and their related manufacturing cost categories are introduced.
Prime and conversion costs are defined and the decreasing importance of direct labour in
automated manufacturing systems is explained.
The financial statements for service, merchandising, and manufacturing sector companies
are compared with the cost of goods sold section being explained and illustrated in detail.
Then costs as assets and expenses are discussed. The three types of inventory appearing
on a manufacturers balance sheet are defined.
The use of unit costs for management decisions is potentially dangerous. Since fixed
costs are constant in the total amount within the relevant range any variation in the output
in units will cause forecasting errors. It is best to segregate the fixed costs from the total
cost, then calculate the change based on variable costs to get the impact of the change. If
necessary add back the total fixed cost amount to the total variable costs to determine the
total cost of a forecasted output.
Product cost is the sum of the costs assigned to a product for a specific purpose, which
could be:
1. Cost-control-problem identification and management; to maximize revenues
and minimize cost
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2. Product pricing and product emphasis, by establishing an appropriate value
proposition where the customer is willing to pay maximum price to maximize
revenues
3. Contracting with government agencies, classification of costs that withstand
scrutiny by external auditors, thus ensuring maximum reimbursement
4. Financial statements that comply with GAAP, COGS must include only
inventoriable costs and other costs are reported as period costs.
TEACHING TIP:
Begin the session on chapter with an overview of the chapter. Make the major points in a
three to five minute opening statement. Use the forgoing to guide your comments. At the
end of the session, close with a reiteration of the same points.
TEACHING TIP: Hand out the quiz questions (quiz fits multiple 8.5 by 11 sheets) at the
beginning of the lecture so that students can write their answer and or make a correction
as necessary. The quiz paper gives the opportunity to make a note about the correct
answer as explained during feedback session. The quiz could be used as part of a
personal response system, or "clicker" technology.
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CHAPTER OUTLINE
Learning Objective 1
Identify and distinguish the logic underlying three cost
classification systems derived from financial accounting
information: period and inventoriable, direct and indirect, prime
and conversion
I.
Cost Classification: Accounting Logic for Cost Management
A. Costs and Relevant Cost Information
1.
Cost is a resource sacrificed or foregone to achieve a specific objective.
2.
Relevant information is information that changes with different decisions.
Costs are not relevant for all decisions. Relevant costs should be used to
support good management decisions.
B. Period and Inventoriable Costs
1.
Period costs are expensed because they will not provide a future benefit.
The benefits have been achieved in generating revenues in the current
period and thus the expense is matched with those revenues generated in
the period.
2.
Cost of Goods Sold (COGS) or Cost of sales (COS) is the accumulated
cost of manufacturing or purchasing respectively, the goods or products
that are sold.
3.
Inventoriable costs is the accumulation of all costs incurred to either
manufacture, as in finished goods inventory or purchase inventory for
resale, merchandise inventory.
4.
Cost of Goods Manufactured (COGM) is the costs of all finished goods
transferred into finished goods inventory, whether sold or unsold
irrespective of the time period when the work was done.
5.
Cost of Goods Available for Sale (COGAS) the cost of goods that are
available for sale during the period. COGAS is made up of beginning
finished goods inventory plus cost of goods manufactured during the
period.
See the Schedule of Cost of Goods Manufactured and Sold at the end of the notes.
Do Chapter Quiz multiple choice question 1.
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Chapter 2
II. Direct and Indirect Costs
A. Direct costs of production can be traced to a given cost objecta single output
unit--in an economically feasible way.
B. Indirect costs of a cost object are related to but cannot be readily traced to specific
output units in an economically feasible way.
C. Factors affecting classification of a cost as direct or indirect:
1. Materiality of contribution to the total cost per unit of output
2. Information technology available to create and maintain management
information system.
3. Production process used and whether the transformation is dependent on
human verses equipment and technology. In other words whether it is a
labour intensive or machine intensive process.
Do Chapter Quiz multiple choice questions 2 and 3.
III. Prime Costs and Conversion Costs
A. The process framework or logic partitions all inventoriable costs into either of
two classifications, prime or conversion
1. Prime costs are significant costs of inputs, usually direct materials is the most
significant single cost in the process costing system. Direct manufacturing
labour can be significant enough to be included in prime cost.
2. Conversion costs include immaterial amounts of labour and all the other costs
necessary to complete a large number of units of output flowing through a
manufacturing process where one unit of output is not distinguishable from
another unit.
B. This classification aids management in monitoring and controlling the costs and
to predict profit performance.
IV. Strategy
A. Strategy is .a way of thinking that relies on hypothesis generation and
testingIt is intelligently opportunistic in search of its goals.while leaving
room for new and unintended strategies to emerge. In more straight forward
language a strategy is pursued by looking at all the opportunities that are available
and connecting the possible outcomes with the mission statement. These possible
outcomes need to be measured in terms of revenues and matching costs.
B. The results of strategies will be the identification of value propositions which are
benefits for which customers will pay. You need to know the cost-benefit
analysis of each value proposition.
C. Develop the what if question and then test the hypothesis with ifthen
question.
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Chapter 2
Do Chapter Quiz multiple choice question 4.
In-class exercise Mastery Questions Learning Objective 1: Question 2
Assign Exercise 2-19.
Learning Objective 2:
Apply cost information to produce detailed financial schedules to
illustrate how the asset value of inventories expires into cost of
goods sold reported on the income statement
V. Merchandising in Contrast to Manufacturing
A. Cost of Sales versus Cost of Goods Sold
1. Finished goods inventory is the result of acquiring goods through purchases
from suppliers of a ready to sell item or through the manufacturing processes
where resources such as materials, labour, and machines are used to produce a
ready to sell item.
B. When the finished goods are eventually sold the income statement presentation
will be cost of sales for merchandising and the cost of goods sold for
manufacturing a period cost as they represent the cost matched with the revenues
which were generated from the sales of merchandise for merchandising and
finished goods in the case of manufacturing. [Refer to Exhibit 2-9 on page 51.]
C. Different Costs for Different Contracts
1. As can be seen in Exhibit 2-10 the routine treatment of direct manufacturing
labour is a direct cost, however the fringe costs are not included. This has the
effect of changing the direct cost as a percentage of total costs.
2. Alternatively, we see that a change in definition of direct manufacturing costs
will change this relationship. Normally, this is not an arbitrary decision, but
when there is an economic incentive to include the direct manufacturing
labour fringe costs as well it is acceptable.
3. Governance IssuesDifferent Cost Classifications
So where there is discretion on the application of cost classification the
responsibility of the professional accountant is of foremost concern. The
Professional Ethics states that management accountants must act with
responsibility for and fidelity to public needs as well as fairness to clients
(amount others). (Governance Issues, page 53)
Do Chapter Quiz multiple choice questions 5 and 6.
In-class exercise Mastery Questions Learning Objective 2:
Question 2
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Learning Objective 3:
Differentiate fixed costs from variable costs using the
management-accounting cost-classification system
VI. Cost Drivers and Cost Management
A. In order to keep up with the competition, organizations analyze costs
continuously with the view of reducing or eliminating costs:
1. Effective and successful cost strategies include analyzing cost and benefit
tradeoffs
2. External factors are considered, including customer preferences and
competitors advantages, in order to develop mission and value proposition.
3. Strategies like product differentiation have been developed using activitybased management, value added analysis, and now lean management
techniques.
4. Lean management focuses on the output and how to reduce or eliminate nonvalue added costs such as waste.
B. Cost Drivers: different Names for Different Causes
1. Managements understanding of classification of costs as variable or fixed is
dependent on the causal factor of costs. What drives the variable costs as
opposed to what drives or causes fixed costs.
2. Cost drivers are what cause cost to change, so that if the quantity of the cost
driver changes the costs will change for the output unit.
3. Two types of causes:
a. Material cause or the input, materials and labour principally.
b. Efficient cause or the internal process of transforming material and labour
into an output unit.
4. Cost control means that not all costs are classified as inventoriable. Excluded
costs are expensed to the period under the financial accounting standards.
Marketing, distribution, and customer services do not cause the cost of the
output unit to increase but the cost of the unit sold to increase.
C. Cost Management
Describes the actions taken by managers to continuously control and reduce
costs yet satisfy customers.
1. Causes of costs are many and mostly cannot be tied to a single factor. Take
for example purchase cost which is caused by two factors, the price per unit of
direct materials and the quantity of direct materials purchased.
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Chapter 2
2. Other factors will cause direct material costs to increase waste caused by
inefficient handling of the direct materials, more materials required to achieve
a given level of units of output.
3. Poorly designed products will lead to waste and more complex processes. The
end result will be the cost of the unit of output.
4. Cost management begins long before the production process. What is
designed dictates how it is to be processed. A poor design has consequences
which may affect subsequent production costs, also customer services costs.
These consequences are best anticipated in the continuous-flow goal of lean
management.
VII. Cost Behaviour: Variable and Fixed Costs
A. Variable cost (VC) changes in proportion to change in the quantity of a cost
driver of an output unit.
B. fixed cost (FC) remains unchanged despite changes in the quantity of output units
produced.
C. Assumptions:
1. Costs are defined as variable or fixed with respect to a specified cost object, a
unit of output.
2. the time horizon must be specified
3. total costs (TC) are the sum of VC + FC and are linear
4. there is only one cost driver for each cost
5. variations of the level of the cost driver are within a relevant range over a
specified time horizon
D. A relevant range is the range of quantity of output units through which a specific
relationship between cost and and its material and efficient cost driver is valid
E. Cost behaviour of Variable, Fixed, and Total Inventoriable Costs [Refer to
Exhibit 2-11 on page 57]
Do Chapter Quiz multiple choice questions 7 and 8.
In-class exercise Mastery Questions Learning Objective 3: Question 1
Assign Exercise 2-24.
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Chapter 2
Learning Objective 4:
Explain the limitations that the use of average or unit costs impose
on managerial decision making
VIII. Unit Costs are an Average
A. Unit cost is computed by dividing some cost total by some number of units. It is
also called average unit cost.
B. Variable costs per unit remain constant over the relevant range. See column E
in Exhibit 2-11
C. Fixed costs per unit/average cost(FC) unit change because of the averaging of
$9,500,000 over a range of Q or cell phones produced. See column G in Exhibit
2-11. Graphically see Exhibit 2-12
D. Use Unit Average Fixed Costs Cautiously. Whenever fixed costs are present,
the average unit cost will change at different volume levels. The reason it is
important to understand the behaviour of fixed, variable, and average costs is
that both strategic and accounting decisions are made on the basis of this
information. If the information directs attention to a non-existent problem, or to
the wrong problem, then decisions to remedy the problem will be ineffective.
Do Chapter Quiz multiple choice question 9.
In-class exercise Mastery Questions Learning Objective 4: Question 2
Assign Exercise 2-25.
Learning Objective 5:
Apply management-accounting logic to classify costs for use in
managerial decisions
IX. Different Costs for Different Purposes
Product cost is the sum of the costs assigned to a product for a specific purpose,
which could be:
1. Cost-control-problem identification and management. Where-ever costs
are incurred managers need relevant information to identify cost-control
problems.
2. Product pricing and product emphasis. Maximizing revenues means
offering a product with an appropriate value proposition to match what
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customers are willing to pay. Relevant information is needed to make the
correct pricing decisions to remain competitive. This information is used to
forecast future outcomes used in pro forma or budgeted income statements.
3. Contracting with government agencies. Government contracts are unique
in that they specify what costs are allowable and what is not allowable. The
contractor convent what will be done and if it fails to do them it can be
penalized. The costing of the project or product can be audited by the
government so a government contract requires a special budget and a
commensurate costing system to produce the desired documentation for
reimbursement.
4. Financial statements. As the primary source of information for external
decision makers it requires adherence to GAAP. Only inventoriable costs can
be included in COGS, all other costs are reported as period costs.
Do Chapter Quiz multiple choice question 10.
In-class exercise Mastery Questions Learning Objective 5: Question 1
Assign Exercise 2-40
includes a Help Me Solve this button that produces a
pop-up window which breaks the question down into
more manageable steps and provides tips to help
students solve the specific part of the problem they are working on.
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Chapter 2
CHAPTER 2 QUIZ
1.
The costs incurred to either manufacture finished goods or purchase finished goods
for resale, merchandise inventory, are:
a.
cost of goods sold
c.
period costs
b.
inventoriable costs.
d.
cost of goods manufactured
Questions 2 and 3 are based on the following data:
Epsilon Company manufactures plastic coated metal clips. The following were among
Epsilons 2010 manufacturing costs:
Wages_________________________________
Machine operators
$200,000
Maintenance workers
30,000
Plant supervisor
90,000
Materials used___________________________
Metal wire
$500,000
Lubricant for oiling machinery
10,000
Plastic coating
380,000
2.
[AICPA Adapted] Epsilons 2010 direct manufacturing labor amounted to
a. $320,000. b.
3.
c.
$200,000.
d.
$290,000.
[AICPA Adapted] Epsilons 2010 direct materials amounted to
a. $890,000. b.
4.
$230,000.
$880,000.
c.
$510,000.
d.
$500,000.
Three part classification of inventoriable costs are:
a.
b.
Direct manufacturing labour is the only conversion cost
c.
Direct material costs are the only prime costs
d.
5.
Indirect costs are the only conversion costs
Direct labour and indirect manufacturing labour are the only conversion costs
The manager wants to know where the cost of goods sold figure has been
calculated. The following are being considered, which one is the correct one:
a.
Beginning inventory plus purchases.
b.
Cost of goods available
c.
Cost of goods available less ending inventory
d.
Ending inventory plus purchases
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Chapter 2
Chapter 2 Quiz continued
6.
The three categories of inventories commonly found in many manufacturing
companies and they are:
a.
b.
purchased goods, period costs, and cost of goods sold.
c.
raw materials, work-in-process, and finished goods.
d.
7.
direct materials, direct labor, and indirect manufacturing costs.
LIFO, FIFO, and weighted average.
The shipping department of Omicron Company had the following information for
2010:
Salaries
Packaging
Postage
Rent of warehouse space
$750,000 all employees on guaranteed contracts
$300,000 depending on size of item(s) shipped
$400,000 depending on weight of item(s) shipped
$200,000 annual lease
Omicrons shipping department had fixed costs amounting to
a. $700,000.
8.
b.
$750,000.
c.
$950,000.
d.
$1,650,000.
Kappa Company successfully bid on jobs printing standard notebook covers during
the year using last years price of $0.27 per cover. This amount was calculated from
prior year costs, noting that no changes in any costs had occurred from the past year
to the current year. At the end of the year, the company manager was shocked to
discover that the company had suffered a loss. How could this be? she exclaimed.
We had no increases in cost and our price was the same as last year. Last year we
had a healthy income. What could explain the companys loss in this current year?
a.
Their costs were all variable costs and the amount produced and sold
increased.
b.
Their costs last year were actual costs but they used budgeted costs to make
their bids.
c.
They used a different cost object this year than the previous year.
d.
Their costs were mostly fixed costs and the amount produced this year was
less than last year.
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Chapter 2
Chapter 2 Quiz continued
9.
Managers need cost information to make decisions concerning cost reductions. The
following choices are listed below. Choose the correct one that leads to an optimal
decision.
a.
b.
Total fixed costs and average unit fixed cost
c.
Total variable costs and variable costs per unit
d.
10.
Total costs and total unit cost
Variable cost per unit and total fixed costs
Beta Corp has entered into an agreement with the local government to receive a
property tax rebate for specific costs that it incurs for land development in the first
two years of business. This is an example of:
a.
product period costs
b.
product inventoriable costs
c.
identifying costs for cost control purposes
d.
expenses
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Chapter 2
CHAPTER 2 QUIZ SOLUTIONS:
1.
[b]
2.
[c]
3.
[b]
4.
[a]
5.
[c]
6.
[c]
7.
[c]
8.
[d]
9.
[d]
10.
[c]
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Chapter 2
WRITING/DISCUSSION EXERCISES
1.
Define and illustrate a cost object.
Describe and give an example of cost other than one with a conventional
meaning (cash outlay).
Everything has a cost. Not all costs are evident or can they be identified and
measured in a more conventional manner but they are costs nevertheless.
Some costs are named but not accounted for in the traditional sense. One example
is opportunity cost [defined in text at later point] that can be associated with any
cost object. Though financial amounts may be associated with this cost, they do not
appear in the accounting records.
Human costs are another example of costs that may be associated with most cost
objects. The text emphasizes the importance of using a management accounting
system to help individuals do their jobs better. Sometimes companies engage in cost
management that benefits the company by costing their employees (and society) on
a personal basis. Mandatory overtime for parents of young children may save a
company the cost of additional employees but deprive the children of time spent
with their parents or contribute to latch-key situations and the lack of adult
supervision and interaction.
Environmental costs may also be assigned to most cost objects. Though these costs
have been highlighted with legislation and are being identified and measured more
often, they may exist in less obvious ways. The interesting story of Easter Island
and how it came to be uninhabitable could be used as an example of using up
resources to the point of changing an environment so much that the damage is
irreparable.
Until recently, unused capacity was not identified as a cost. In a later chapter costs
are attached to this situation and cost objects identified.
2.
Distinguish between direct costs and indirect costs.
If a cost can be traced directly to its cost object, why might a company choose not
to trace but to include that cost in the indirect cost category and allocate on some
arbitrary basis? Explain the advantage and disadvantage of tracing versus not
tracing.
Advantages
Cost may be feasible to trace but not in an economical manner
Cost may be more costly to trace than the benefit of accuracy provided by
tracing (materiality taken in context of all costs)
Disadvantage
Loss of accuracy
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Chapter 2
3.
Explain cost drivers, variable costs, and fixed costs.
How can a cost driver/cost relationship be developed?
The development of a relationship is similar to that of developing a working model
(often labeled the scientific method). Thoughtful observation is primary. As one
observes recorded data, both financial and nonfinancial, noting relevant changes in
related factors, causal relationships can be inferred. From the inferences,
assessment can be made about the plausibility of such a cause-effect relationship.
Most relationships are complex and all of the interrelationships cannot be
discerned, therefore a model cannot be as accurate and reliable as the actual
relationship. Models must be simplistic in order to be useful (cost-benefit
approach). They must also be updated form time to time or cast off for a new
approach as things change. Models can be relied upon to eliminate some errors
that could occur without their use. If a model is used like a checklist then
inexperienced workers can be productive more quickly by following an experience
model before they gain complete understanding. Artificial intelligence is based
upon human models of thinking about a particular task. In the example of filling out
income tax returns, the model gave right answers more often than the
professionals did because the professionals sometimes forget to include a minor
item or consideration.
4.
Distinguish among, merchandising companies, and manufacturing companies,
and service-sector companies.
Why would a service-sector company need cost accounting when they do not
have product inventories or cost of goods sold?
Service-sector companies do have products and need to know if the revenues
generated by those products or services exceed the cost of furnishing the service.
For financial accounting the service cannot be inventoried because it does not exist
until it is performed, at which time it becomes an expense. The expense is not
labeled cost of goods sold because it is not a good in the traditional meaning.
Cost accounting is more than costing a product that can be inventoried. Costs must
be accumulated and assigned for service-sector companies. The greater context of
cost management is also important for service-sector companies.
5.
Interpret unit costs cautiously.
Explain why a variable cost stays the same per unit and a fixed cost changes per
unit. Which cost would decision makers prefer to use as a per unit cost and why?
In calculating a per unit cost, division is used. Variable costs derive the name
variable from their total cost behavior. As the numerator changes (the cost), the
denominator (the cost driver) also changes in proportion so that the quotient is the
same at any level within the relevant range. A fixed cost, however, means that the
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numerator is fixed in total within the relevant range. As the denominator changes,
the numerator does not, and the resulting quotient changes with each change in the
denominator. The name of the cost is based upon total cost behavior and does not
apply to per unit cost behavior, but in fact, the unit behavior can be described as
the opposite of how the total behavior is described.
Most decision makers would do well to use only variable costs on a per unit basis.
Decisions are about the future, and in predicting costs, one would want to use a
cost for which the behavior was more easily predictable. Fixed costs can be
predicted more easily in total. To use them as unit costs, one would have to
carefully predict a level of activity for the cost driver. If another activity level were
to be considered, the per unit cost would have to be recalculated; whereas for the
variable cost, several levels of activity could be used without recalculating the per
unit cost (relevant range concept).
6.
Explain why product costs are computed in different ways for different
purposes.
If costs can be assigned in different ways for different purposes, how does one
know what costs to combine?
The purpose for which costs are to be developed must be clearly defined. From that
clear purpose, a cost object can be identified so costs can then be appropriately
assigned. In the situations in which the cost object may be defined commonly as the
product cost but for which differing amounts of the same costs are assigned, one
can look more closely at the particular purposes. The cost object, though appearing
to be the same product in various situations, is not. For purposes of pricing, the
product must cover all costs of the organization for that is the means by which
the company would earn a profit. For purposes of costing the product for a
specific contract, the terms of the contract would have to be met. For financial
accounting purposes, the cost of the product would have to meet the definition
given under GAAP. Using a common label for a cost object such as product cost
is not enough to define the combining of cost but one must look to the particular
purpose and its full meaning.
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Chapter 2
BEWARE OF UNIT COSTS
Total
Unit
Variable
Varies Same
Fixed
Fixed
Changes
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Chapter 2
Schedule of Cost of Goods Manufactured and Sold
Beginning direct materials inventory
+ Purchases___________________
Available for use
Ending direct materials inventory__
Direct materials used
Direct manufacturing labor
Indirect manufacturing costs (Listing)
Variable
Fixed_________________________
Total Manufacturing costs incurred during current period
+ Beginning work in process inventory
Total manufacturing costs to account for
Ending work in process inventory
Cost of goods manufactured
+ Beginning finished goods inventory
Goods available for sale
Ending finished goods inventory__
Cost of goods sold (to income statement)
Income Statement
Revenue (Sales)
Cost of goods sold (from schedule)
Gross margin
Operating costs_________________
Operating income_________________
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