5.2 Distinction between activity-based costing and the Traditional absorption costing

Activity-based costing (ABC) and traditional absorption costing are two different methods used in cost accounting to allocate costs to products or services. Here are the key distinctions between the two approaches:

1. Cost allocation basis:
   • Traditional absorption costing: This method typically allocates costs based on a single cost driver, such as direct labor hours or machine hours. It assumes that these drivers are the primary factors driving costs across different products or services.
   • Activity-based costing: ABC identifies and assigns costs based on multiple cost drivers or activities. It recognizes that different products or services consume different activities and resources, and therefore, costs should be allocated accordingly. ABC focuses on understanding the cause-and-effect relationship between activities and costs.
2. Complexity of cost allocation:
   • Traditional absorption costing: It is a simpler and less detailed method of cost allocation. Costs are typically allocated to products or services using a predetermined overhead rate based on a single cost driver. This can lead to distortions and inaccuracies if the single cost driver does not accurately represent the cost incurrence.
   • Activity-based costing: ABC is more complex and detailed. It involves identifying numerous activities and cost drivers, which leads to a more accurate allocation of costs to products or services. ABC provides a more comprehensive understanding of cost behavior and allows for a better analysis of cost drivers and their impact on overall costs.
3. Focus on overhead costs:
   • Traditional absorption costing: This method primarily focuses on allocating indirect or overhead costs to products or services. It assumes that indirect costs are incurred uniformly across the organization and assigns them based on a predetermined rate.
   • Activity-based costing: ABC also considers indirect or overhead costs, but it goes a step further by identifying the specific activities that drive these costs. ABC provides a more detailed view of how different activities consume resources and contribute to overall costs. It allows for a more accurate allocation of indirect costs based on the actual consumption of activities by products or services.
4. Decision-making support:
   • Traditional absorption costing: It may not provide accurate cost information for decision-making, especially when products or services have different activity consumption patterns. This can lead to suboptimal decisions.
   • Activity-based costing: ABC provides more accurate cost information, enabling better decision-making. It helps in identifying cost-saving opportunities, process improvements, and product/service profitability analysis. ABC allows organizations to prioritize resources and investments based on the activities that create the most value.

Overall, activity-based costing is a more sophisticated and detailed approach that provides a better understanding of costs compared to traditional absorption costing. It recognizes the heterogeneity of cost drivers and activities, resulting in more accurate cost allocations and improved decision-making.