8/11/2019 Cost Driver - Wikipedia, The Free Encyclopedia
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Cost driverFrom Wikipedia, the free encyclopedia
According to CIMA, cost driver is any factor which causes a
change in the cost of an activity. A cost driver
is the unit of an activity that causes the change in activity's
cost. Examples: In marketing, cost drivers are
Number of advertisements, Number of sales personnel etc. In
Customer service, cost drivers are Number of
service calls attended, number of staff in service department,
number of warranties handled, Hours spent on
servicing etc...
"Cost drivers are the structural determinants of the cost of an
activity, reflecting any linkages or
interrelationships that affect it" (M. Porter). Therefore we
could assume that the cost drivers determine the
cost behavior within the activities, reflecting the links that
these have with other activities and relationships
that affect them.
The Activity Based Costing (ABC) approach relates indirect cost
to the activities that drive them to be
incurred. Activity Based Costing is based on the belief that
activities cause costs and therefore a link should
be established between activities and product. The cost drivers
thus are the link between the activities and
the cost.
Generally, the cost driver for short term indirect variable
costs may be the volume of output/activity; but for
long term indirect variable costs, the cost drivers will not be
related to volume of output/activity.
In traditional costing the cost driver to allocate indirect cost
to cost objects was volume of output. With the
change in business structures, technology and thereby cost
structures it was found that the volume of output
was not the only cost driver. Some examples of indirect costs
and their drivers are: indirect costs for
maintenance, with the possible driver of this cost being the
number of machine hours; or, the indirect cost of
handling raw-material cost, which may be driven by the number of
orders received; or, inspection costs that
are driven by the number of inspections or the hours of
inspection or production runs.
John Shank and Vijay Govindarajan list cost drivers into two
categories: Structural cost drivers that are
derived from the business strategic choices about its underlying
economic structure such as scale and scope
of operations, complexity of products, use of technology, etc.,
and Executional cost drivers that are derived
from the execution of the business activities such as capacity
utilization, plant layout, work-force
involvement, etc. Resource cost Driver is measure of quantity of
resources consumed by an activity. It is
used to assign cost of a resource to activity or cost pool.
Activity Cost Driver is measure of frequency and
intensity of demand placed on activities by cost object. It is
used to assign activity costs to cost objects.
To carry out a value chain analysis, ABC is a necessary tool. To
carry out ABC, it is necessary that cost
drivers are established for different cost pools.
References
Strategic Cost Management: The New Tool for Competitive
Advantageby Shank and Govindarajan
Cost Accounting: a managerial emphasis- 12a Edio (2005) by
Charles T. Horngren, George Foster
e Srikant M. Datar
"Competitive Advantage", by Michael Porter.
t driver - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Cost_driver
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