1. 1 ACTIVITY-BASED COSTING Chapter 7 Accounting Principles II AC 2102 - Fall Semester, 1999

2. 2 Limitations of Traditional Cost Accounting Systems For companies operating in an advanced manufacturing environment traditional cost systems often are inadequate and cause the company to operate with severe competitive disadvantages Activity-Based Costing is a contemporary approach that has been developed to deal with this new and challenging environment

3. 3 Characteristics of An Advanced Manufacturing Environment Intense Competition –usually on a world wide level Continuous Improvement Total Quality Management Total Customer Satisfaction Sophisticated Technology

4. 4 Signs That A Company’s Cost Accounting System May Be Outdated The outcome of bids is difficult to explain Competitors’ prices appear to be unrealistically low Products that are difficult to produce show high profits Operational managers want to drop products that appear profitable Profit margins are difficult to explain

5. 5 Signs That A Company’s Cost Accounting System May Be Outdated The company has a highly profitable niche to itself Customers do not complain about price increases The accounting department spends a lot of time supplying cost data for special projects Some departments are using their own accounting systems Product costs change because of changes in financial reporting regulations

6. 6 Two Key Characteristics of Companies Who Need More Accurate Costing Systems The proportion of nonunit-related overhead costs to total overhead costs is large The degree of product diversity is great

7. 7 Nonunit-Related Overhead Costs Using plantwide rates or departmental rates –assumes that a product’s consumption of overhead resources is related strictly to the units produced (or to a single cost driver) But there are overhead activities that are unrelated to the number of units produced –Examples: Setup costs (number of batches) Engineering design changes (number of products or alterations requested) Using only unit-based activity drivers to assign nonunit-related costs can cause distorted product costs

8. 8 Product Diversity If products consume the nonunit overhead activities in the same proportion as the unit overhead activities, – then no product-costing distortion will occur with the use of traditional costing methods However if the product line contains products that are quite diverse then such distortions will probably be significant

9. 9 Product Diversity When products consume overhead in different proportions Products consume overhead differently because they may be different in the following ways: –Product size –Product complexity –Setup Time –Size of batches –Special Request of Customers

10. 10 Regardless of the nature of Product Diversity Product cost will be distorted whenever the following situation prevails: – quantity of unit-based overhead that a product consumes does not vary in direct proportion to the quantity consumed of nonunit-based overhead

11. 11 The Basic Logic Of Activity-Based Costing Organization are really involved in performing a variety of activities To carry out these activities requires the consumption of resources –Thus resource costs should first be assigned to activities and then activity costs to the products, services, customers, etc. for which these activities were performed

12. 12 The Two Stage Process OF Activity-Based Costing 1st Stage: –Trace costs to activities –Rather than to an organizational unit such as a plant or department 2nd Stage: –Assign activity costs to products (or the cost object of interest)

13. 13 Some Key Features Of Activity-Based Costing Systems Emphasizes direct tracing and driver tracing –Exploiting cause-and-effect relationships In contrast, traditional costing systems tend to be allocation intensive –Largely ignoring cause-and-effect relationships Note: –The principal computational difference between the two methods concerns the nature and number of cost drivers used

14. 14 Drivers Used In Activity-Based Costing Systems Uses both unit-based and nonunit- based activity drivers These drivers must reflect a cause-and- effect relationship In practical terms, drivers must explain a large percentage of activity cost variablity

15. 15 Number of Cost Drivers Used In Activity-Based Costing The number of drivers used is generally greater than the number of unit-based drivers commonly used in a traditional system The ABC method produces increased product-costing accuracy

16. 16 First-Stage Procedure Relating Resource Costs To Activities Resources: –economic elements that are consumed in performing activities –examples: labor, material, electricity Activity: –a basic unit of work performed within an organization –examples: typing a letter, setting up a machine, assembling a product, packaging

17. 17 Determining The Cost To Perform One Unit of An Activity Once an activity is defined, –the managerial accountant must determine the resources which are expended in performing the activity The resources used in performing the activity are identified or assigned to the activity by –Direct tracing –Driver Tracing (called resource drivers) –Cost Allocation

18. 18 Reducing The Number of Activity Overhead Rates Most organizations generally will perform hundreds of activities To calculate the rate per unit for each of these activities is unmanageable Therefore activities are grouped and the costs for a similar set of activities are totaled together –This collection of costs for a set of activities is called a homogeneous cost pool

19. 19 How Activities Are Grouped To reduce the number of activity charging rates required and to streamline the costing process, activities are grouped in homogeneous sets based on similar characteristics: (1) They are logically related (2) The have the same (or reasonably close) consumption ratios for all products Since the activities within the homogeneous cost pool have the same consumption ratio, – costs can be assigned to all products with a single activity driver

20. 20 The Five Steps In The First-Stage Procedures (1) Activities are identified (2) Costs are assigned to activities –For resources that are consumed (3) Related activities are grouped to form homogeneous sets (4) The costs of grouped activities are summed to define homogeneous cost pools (5) Pool (overhead charging) rates are computed –The appropriate activity driver is selected –Total pool costs are divided by total units of the activity driver

21. 21 The Second Stage Procedure In Activity-Based Costing Using activity cost drivers, the costs of each overhead pool are assigned to products Thus, the costs of a product or service would include the following: –Any material or labor costs that can be directly attached to the product or service being costed - these costs are called prime costs –Any other costs which would be assigned through activity drivers - these drivers are sometimes called pool rates

22. 22 The Second Stage Procedure Some Additional Comments Products or services are produced by carrying out various activities The resources consumed by each activity was determined in stage one –From this analysis, resource consumption costs per “unit” of activity was determined –These calculated costs per “unit” of activity are called activity drivers, or “pool” rates In the 2nd stage, these rates are used to charge the costs of activities to products and services

23. 23 Activities Some Additional Comments Activity implies action taken or work performed Activities are generally what an organization does to satisfy customer needs Activities are the building blocks for (1) product costing (2) continuous improvement The focus of activity-based costing is activities

24. 24 Activity Identification Observing and listing the work performed within an organization Interviews, observation, flowcharting of operations, study of processes, counting of document flows, etc. are all used for identifying the activities performed within an organization Each activity is usually described by an action verb and an object Once identified, activities are listed in a document called an activity inventory

25. 25 The Activity Inventory List of all identified activities List could easily contain 200 to 300 activities Activity attributes are used to further describe and classify the activities Activity attributes –nonfinancial and financial information items that describe individual activities For product costing, then attributes which reflect how products consume activities would be focused on

26. 26 Example of An Activity Inventory 1. Ordering materials 2. Receiving materials 3. Testing product 4. Setting up batches 5. Collecting engineering data 6. Welding subassemblies 7. Moving materials 8. Providing utilities 9. Providing space 10. Packaging goods 11. Shipping goods 12. Paying for materials 13. Billing customers 14. Making collections

27. 27 Classification Of Activities For Product Costing Purposes Activity attributes are used to group related activities into sets that form the basis for homogeneous cost pools Grouping activities has several advantages: (1) Reduces the number of overhead rates needed (2) Simplifies the task of product costing (3) Decreases the overall complexity of the ABC product costing model

28. 28 Two Basic Attributes That Activities Have To Have In Common To Be Grouped In The Same Set (1) Activity-level attribute –They are performed in at the same general activity-level –Activities that can be logically related (2) Driver Attribute –They can use the same activity driver to assign costs to a cost object –They must have the same consumption ration

29. 29 Activity-level Classification Building A Set of Related Activities Activities are classified into one the the following four general activity categories: (1) Unit Level (2) Batch Level (3) Product Level (4) Facility Level Grouping activities into these categories facilitates more accurate product costing –because each level responds to different types of cost drivers

30. 30 Unit-level Activities Are activities that are performed every time a unit is produced Examples: –quantity of direct material and direct labor activities varies with the numbe of units produced –power and machine hours are used each time a unit is produced The costs of unit-level activities vary with the number of units produced

31. 31 Batch-level Activities Are activities that are performed every time a batch is produced Examples: –Setups, production scheduling, and material handling The costs of batch-level activities vary with the number of batches produced –but these costs are fixed or unaffected with respect to the number of units in each batch

32. 32 Product-level (Sustaining) Activities Are activities peformed as needed to support the various products produced by the company Examples: –Engineering changes, development of product- testing procedures, marketing a product, process engineering, and expediting These activities and their costs tend to increase as the number of different products increases

33. 33 Facility-level Activities Are those activities that sustain a factory’s general manufacturing processes Examples: –plant management, landscaping, support of community programs, security, property taxes, and plant depreciation These activities benefit the organization at some level, but do not provide a benefit for any specific product

34. 34 Product-Related Categories Activity Driver Classification Unit Level Batch Level Product Level Activities within these three categories contain product-related activities It is possible to measure the demands placed on these activities by individual products

35. 35 Activity Drivers Factors which measure the demands placed on activities by cost objects These drivers are used to assign the cost of activities to cost objects Activities with the same consumption ratios can use the same activity driver to assign costs

36. 36 Grouping Activities All activities, within each of the first three levels (unit, batch or product), –can use the same activity driver to assign costs –this creates a homogeneous set of activities –results in a collection of activities that are at the same level and use the same activity drivers

37. 37 Facility-level Activities The Challenge of Cost Assignment Pose a problem for the ABC philosophy of tracing costs to products Tracing costs to products depends on the ability to identify the amount of each activity consumed by a product But these activities are common to a variety of products It is not possible to identify how individual products consume these activities

38. 38 Facility-level Activities The Challenge of Cost Assignment ABC systems usually implement a full costing approach and allocate these facility- level costs to products Unit level, batch-level, or product-level cost drivers are often used for the allocation Or the total overhead charged by the first three drivers is used as a basis for assigning facility-level costs

39. 39 Facility-level Activities The Challenge of Cost Assignment The arbitrary or somewhat “crude” assignment of facility-related costs is not a serious problem in many instances The distortion in total product cost caused by questionable allocation bases may not be significant because these costs often make up a relatively small portion of the total costs

40. 40 ABC & Customer-Driven Costs Customer diversity just as possible as product diversity Customers can consume customer-driven activities in different proportions Sources of customer diversity: –order frequency, geographic distance, sales and promotional support, engineering support requirements, service support Knowing costs of different customers can be vital for pricing, product mix decisions and improving profitability

41. 41 Customer Costing vs. Product Costing ABC Costing Systems Assigning the costs of customer service to customers is done in the same way that manufacturing costs are assigned to products Include in activities inventory: –order entry, order picking, shipping, making sales calls, evaluating a clients credit, etc. Assign the costs of the resources consumed to these activities and then to the customers requiring or demanding these activities

42. 42 Traditional Costing vs. ABC Costing Traditional Systems Use only unit-based drivers Ignore batch, product, & facility level distinc. Assign all fixed OH in an arbitrary way Do not easily permit analysis of value & non-value activities Frequently distort product costs ABC Systems Use all four levels of drivers Eplicitly consider all four levels of activities Arbitrary allocations of fixed costs reduced Allow managers to identify which activities add value Improve accuracy of product costs

43. 43 Managerial Perspective On Activity-Based Costing (1) Offers more than just more accurate product cost information Also provides information about the costs and performance of activities and resources Can be used to trace costs accurately to cost objects other than products –To activities,customers, channels of distribution, etc.

44. 44 Managerial Perspective On Activity-Based Costing (2) Provides means to identify areas where efficiency can be improved Basic Steps: –Better understand and know the costs of activities –Evaluate the importance of each activity to the organization and its customers –Better understand how efficiently each activity is performed –Determine opportunities to simplify, modify, make more efficient, or eliminate activities

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