Week 4 Flashcards
Costing system
Process of accumulating, classifying, and assigning direct materials, direct labour and factory overhead costs to cost objects. There is need for accurate cost information, especially for firms that employ a cost leadership strategy, as increased profitability will come from minimizing unnecessary and workable costs. The overall costing system used should match the competitive strategy and nature of the firm. There are three components of the costing system that a firm must decide on:
- Cost accumulation method
- Cost measurement method
- Overhead application method
Cost accumulation method
- Job costing entails that costs can be accumulated by tracing them to a specific product or service. In this type of system, the jobs consist of individual or batches of products or services. When direct cost allocation can take place, job costing is most relevant for the firm. Also, some firms operate with a push method, in which products are produced based on forecasts of consumer demand, and others use a pull method, in which production occurs when customers order some quantity of product;
- Process costing entails that costs can be accumulated at the department level and then allocated from the departments to the products or services. Process costing is commonly found in firms that produce one or few homogeneous products or services.
Cost measurement method
- An actual costing system uses actual costs incurred for all product costs, including direct materials, direct labour and factory overhead;
- A normal costing system uses actual costs for direct materials and direct labour, but uses normal costs for factory overhead. Normal costing consists of estimating a portion of overhead to be assigned to each product as t is produced. It provides a timely estimate of the cost of producing each product or job;
- A standard costing system uses standard costs and quantities for direct materials, direct labour and factory overhead. Standard costs are expected costs the firm should attain. It provides a basis for cost control, performance evaluation, and process improvement.
Overhead application method
- Volume based costing, with volume based cost drivers;
- Activity based costing, using both volume and non-volume based cost drivers to provide a more accurate allocation of overhead costs to products.
Strategic Role of Costing
Firms need accurate cost information to be able to compete successfully. And to get this information, firms need to choose a cost system that is a match for their competitive strategy. For example, a cost leadership firm is more likely to use process costing systems, based on activity.
Job Costing: The Cost Flows
Job costing is a product costing system that accumulates and assigns costs to specific jobs, customers, projects, or contracts.
A basic supporting element to the system is the job cost sheet, which records and summarizes the costs of direct materials, direct labour, and factory overhead for a job.
The job cost sheet shows the materials, labour and overhead required for the production batch of 20 units for a firm called TFI.
Overhead application
Process of allocating factory overhead costs to jobs, involving the allocation of indirect costs to cost objects. There are two approaches: actual costing and normal costing.
- The previously discussed actual costing system uses actual costs for direct materials and direct labour, and records actual factory overhead for the jobs. Actual factory overhead costs are incurred each month for indirect materials, indirect labour, and other indirect factory costs (e.g. factory rent, insurance, etc.). Usually, the total amount of actual overhead is not known until the end of the accounting period, when all relevant figures are in.
- A normal costing system uses actual costs for direct materials and direct labour, and applied factory overhead to jobs by using a predetermined rate. This system avoids the fluctuations in cost per unit under actual costing, which originate from changes in the month-to-month volume of units produced and consequently changes in overhead costs.
The predetermined factory overhead rate
Estimated rate used to apply factory overhead dost to a specific job. The amount of overhead applied to a job using the rate is called factory overhead’ applied. Four steps are necessary:
- Estimate total factory overhead costs for the upcoming operating period;
- Select the most appropriate cost driver for applying the factory overhead costs;
- Estimate the total amount of the chosen cost driver for the upcoming operating period;
- Divide the estimated factory overhead costs by the estimated amount of the chosen cost driver.
Overapplied overhead
The amount of factory overhead applied that exceeds the actual factory overhead cost incurred.
Underapplied overhead
The amount by which actual factory overhead exceeds factory overhead applied.
Operation costing
Hybrid costing system that uses a job costing approach to assign direct
material costs to jobs and a process costing approach to assign conversion costs to products or services.
It is used in manufacturing operations, whose conversion activities are very similar across different product lines, but whose direct materials’ usage differs significantly.
Resource consumption cost drivers
Measure the amount of resources consumed by an activity.
Activity consumption cost drivers
Measure the demand cost objects place on resources. Understanding the fundamental difference between the two is necessary when discussing costing systems.
Two-stage cost assignment procedure
Assigns resource costs to activity cost pools and then to cost objects to determine the amount of resource costs for each of the cost objects.
Volume-based costing systems
Assign factory overhead costs first to plant or departmental cost pools, and then to products and services. Therefore, in the first stage: factory overhead
costs are combined into a single plant cost pool, or several departmental cost
pools. In the second stage: a volume-based rate, in terms of units produced or hours used in production, is then used to apply overhead to each of the cost objects.
Volume based costing may lead to the aggregation error, as different departments and products may use varying degrees of support systems and indirect costs.