an introduction to cost terms and purposes © 2009 pearson prentice hall. all rights reserved
TRANSCRIPT
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An Introduction to Cost Terms and Purposes
© 2009 Pearson Prentice Hall. All rights reserved.
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Basic Cost TerminologyCost – sacrificed resource to achieve a
specific objectiveActual cost – a cost that has occurredBudgeted cost – a predicted costCost object – anything of interest for which a
cost is desired
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Cost Object Examples at BMWCost Object Illustration
Product BMW X 5 sports activity vehicle
Service Dealer-support telephone hotline
ProjectR&D project on DVD system enhancement
CustomerHerb Chambers Motors, a dealer that purchases a broad range of BMW vehicles
Activity Setting up production machines
Department Environmental, Health & Safety
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Basic Cost TerminologyCost accumulation – a collection of cost data
in an organized mannerCost assignment – a general term that
includes gathering accumulated costs to a cost object. This includes:Tracing accumulated costs with a direct
relationship to the cost object and Allocating accumulated costs with an indirect
relationship to a cost object
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Direct & Indirect CostsDirect costs – can be conveniently and
economically traced (tracked) to a cost objectIndirect costs – cannot be conveniently or
economically traced (tracked) to a cost object. Instead of being traced, these costs are allocated to a cost object in a rational and systematic manner
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BMW: Assigning Costs to a Cost Object
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Cost ExamplesDirect Costs
PartsAssembly line wages
Indirect CostsElectricityRentProperty taxes
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Factors Affecting Direct / Indirect Cost ClassificationCost MaterialityAvailability of information-gathering
technologyOperational Design
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Cost BehaviorVariable costs – changes in total in
proportion to changes in the related level of activity or volume
Fixed costs – remain unchanged in total regardless of changes in the related level of activity or volume
Costs are fixed or variable only with respect to a specific activity or a given time period
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Cost Behavior, continuedVariable costs – are constant on a per-unit
basis. If a product takes 5 pounds of materials each, it stays the same per unit regardless of one, ten or a thousand units are produced
Fixed costs – change inversely with the level of production. As more units are produced, the same fixed cost is spread over more and more units, reducing the cost per unit
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Cost Behavior SummarizedTotal Dollars Cost per Unit
Variable Costs
Change in proportion with
outputMore output = More cost
Fixed CostsUnchanged in
relation to output
Change inversely with output
More output = lower cost
per unit
Total Dollars Cost Per Unit
Variable CostsChange in
proportion with output
More output = More cost
Unchanged in relation to output
Fixed Costs Unchanged in relation to output
Change inversely with
outputMore output = lower cost
per unit
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Cost Behavior Visualized
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Other Cost ConceptsCost Driver – a variable that causally affects
costs over a given time spanRelevant Range – the band of normal activity
level (or volume) in which there is a specific relationship between the level of activity (or volume) and a given costFor example, fixed costs are considered fixed
only within the relevant range.
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Relevant Range Visualized
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A Cost CaveatUnit costs should be used cautiously. Since
unit costs change with a different level of output or volume, it may be more prudent to base decisions on a total dollar basis.Unit costs that include fixed costs should
always reference a given level of output or activity
Unit Costs are also called Average Costs
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Multiple Classification of CostsCosts may be classified as:
Direct / Indirect, and Variable / Fixed
These multiple classifications give rise to important cost combinations:Direct & VariableDirect & FixedIndirect & VariableIndirect & Fixed
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Multiple Classification of Costs, Visualized
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Different Types of FirmsManufacturing-sector companies – create and
sell their own productsMerchandising-sector companies – product
resellersService-sector companies – provide services
(intangible products)
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Types of Manufacturing InventoriesDirect Materials – resources in-stock and
available for useWork-in-Process (or progress) – products
started but not yet completed. Often abbreviated as WIP
Finished Goods – products completed and ready for sale
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Types of Product CostsAlso known as Inventoriable Costs
Direct MaterialsDirect LaborIndirect Manufacturing – factory costs that are
not traceable to the product. Other common names for this type of cost include Manufacturing Overhead costs or Factory Overhead costs.
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Accounting Distinction Between CostsInventoriable costs – product manufacturing
costs. These costs are capitalized as assets (inventory) until they are sold and transferred to Cost of Goods Sold.
Period costs – have no future value and are expensed as incurred.
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Cost FlowsThe Cost of Goods Manufactured and the
Cost of Goods Sold section of the Income Statement are accounting representations of the actual flow of costs through a production system.Note the importance of inventory accounts in
the following accounting reports, and in the cost flow chart
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Cost Flows Visualized
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Cost of Goods Manufactured
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Multiple-Step Income Statement
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Other Cost ConsiderationsPrime cost is a term referring to all direct
manufacturing costs (labor and materials)Conversion cost is a term referring to direct
labor and factory overhead costs, collectivelyOvertime labor costs are considered part of
overhead due to the inability to precisely know the true cause of these costs
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Different Definitions of Costs for Different ApplicationsPricing and product-mix decisions – may use
a “super” cost approach (comprehensive)Contracting with government agencies – very
specific definitions of cost for “cost plus profit” contracts
Preparing external-use financial statements – GAAP-driven product costs only
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Different Definitions of Costs for Different Applications
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Three Common Features of Cost Accounting & Cost Management
1. Calculating the cost of products, services, and other cost objects
2. Obtaining information for planning & control, and performance evaluation
3. Analyzing the relevant information for making decisions
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