Homogeneous Cost Pool

A way of logically grouping together related costs

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What is a Homogeneous Cost Pool?

A homogeneous cost pool is essentially an accounting term used by the management of a company to group together costs that show a similar cause and effect, or benefits received, or relationship in terms of the allocation base of costs. In short, homogeneous cost pools are a way of logically grouping together related costs. The more similar the cost pools are, the more easily they can be attributed to a specific cost.

Homogeneous Cost Pool

An activity cost pool is one of the most common forms of homogeneous cost pools. It involves the grouping together of all costs that are associated with a given task within a company, such as the making of a specific product. Pooling together all the costs associated with all activities required to complete a given task makes it easier to obtain a solid estimate of how much the task will actually cost the company.

Breaking Down Homogeneous Cost Pool

The allocation base of cost determines how the cost is assigned to a cost pool. For example, the costs associated with maintaining machinery would likely be assigned based on hours of operation. The longer the machinery runs, the higher the estimated maintenance cost assigned to the cost pool.

The cause and effect relationship focuses on why resources need to be used or consumed and on identifying what specifically drives the cost of one activity or another. For example, say that the number of hours spent on quality control is a cost allocation base.

A manufacturer producing a good that is intricately designed and requires a lot of parts all working together perfectly – such as a high-technology product – needs to spend a substantial amount of time ensuring that each product’s quality is up to standards. For this reason, quality control, then, is a significant cost driver in the manufacturing process.

The grouping by benefits into cost pools is determined by which departments benefit from the allocation base. For example, consider advertising expenses. A company’s advertising produces benefits for the entire company, not just for a single department. Therefore, it seems appropriate that a company would distribute advertising expenses evenly across all departments.

The Good and the Bad of a Homogeneous Cost Pool

The larger the number of cost drivers within a company, the bigger the number of homogeneous cost pools there will likely be. Identifying such cost pools can genuinely help a company better estimate and account for costs, ultimately helping improve its bottom line.

The primary difficulty with cost pools, especially when there are a lot of them, is that they can require a significant amount of effort and time to establish what should be included within them and then to them over the long-term.

Therefore, it’s advantageous for a company to limit the number of its cost pools as much as possible in most cases. However, doing so may mean that each cost pool may become less homogeneous – the costs within it may not be similar. While this can make establishing accurate cost estimates more difficult, in the end, it can save companies a good deal of time and money when it comes to establishing and maintaining the cost pools themselves.

For smaller, activity-based costing projects, there is less of an issue with cost pools. There is a smaller number of costs to be considered, and therefore, the pool’s accuracy level can be more easily monitored and estimated.

While they come with some inherent difficulties, homogeneous cost pools can make a huge difference for companies in accurately determining and managing costs. Using cost pools can help companies more effectively anticipate and plan for expenditures.

Additional Resources

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