Activity-Based Costing vs. Direct Labour Allocation at Vroom
This paper analyzes overhead cost allocation methods at Vroom plc, a motorcycle manufacturer producing three product lines: Sunshine, Roadster, and Fireball. It first calculates net profit for each line using direct labour hours as the cost driver, then recalculates using activity-based costing (ABC), which allocates overhead through deliveries, set-ups, and purchase orders. The comparison reveals that while the direct labour method shows all three products as profitable, ABC exposes the Fireball as loss-making by approximately £110,833 annually. The paper argues that ABC produces more accurate product-level cost information and offers strategic recommendations for improving Fireball's profitability or pricing.
- Overview of Cost Allocation Methods at Vroom plc: Direct labour vs. ABC profit calculations introduced
- Activity-Based Costing: Methodology and Inputs: Why ABC requires better data than traditional costing
- ABC vs. Direct Labour: Comparative Results: How overhead categories differ across the two systems
- The Fireball's True Cost Profile: ABC reveals Fireball is a loss-making product
- Strategic Implications of Adopting ABC: Using ABC findings to improve pricing and efficiency
- Recommendation and Conclusion: Adopt ABC with a parallel transition period
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What makes this paper effective
- Grounds its argument in concrete numerical comparisons — two full income statements side by side — so the case for ABC is demonstrated, not just asserted.
- Explains the intuitive logic behind each method's weakness and strength, making technical accounting concepts accessible without oversimplifying them.
- Moves logically from analysis to actionable recommendations (consolidate deliveries, reduce production runs, adjust pricing), giving the paper practical value beyond the numbers.
Key academic technique demonstrated
The paper uses a structured compare-and-contrast method: it first presents results under the incumbent system, then reruns the same problem under ABC, and isolates the difference to a single figure (£110,833). This technique — hold the data constant and vary the method — cleanly isolates the variable under examination and is a classic approach in managerial accounting analysis.
Structure breakdown
The paper opens with numerical tables for both allocation methods, then transitions to a prose analysis explaining why the methods diverge. A firm-level income statement is presented with and without the Fireball to quantify the impact. The paper closes with strategic recommendations and a call to adopt ABC, supported by a proposed transition period. The argument flows from data to interpretation to decision.
Overview of Cost Allocation Methods at Vroom plc
This analysis examines overhead cost allocation at Vroom plc, a motorcycle manufacturer with three product lines: Sunshine, Roadster, and Fireball. Two approaches are compared: the current system, which uses direct labour hours as the cost driver for all overhead, and activity-based costing (ABC), which allocates overhead through specific activity drivers.
Using direct labour hours as the cost driver, the net profit calculation for each motorcycle line is presented in the table below.
Vroom plc — Net Profit by Product (Driver: Direct Labour Hours)
| Sunshine | Roadster | Fireball | Total | |
|---|---|---|---|---|
| Output | ||||
| Direct Labour (DL) | ||||
| Materials | ||||
| Revenue | ||||
| Less: DL | ||||
| Less: Materials | ||||
| Gross Profit | ||||
| Less: Overhead | ||||
| Net Profit |
Activity-Based Costing: Methodology and Inputs
Activity-based costing is designed to allocate overhead costs based on the resources that each activity consumes (The Economist, 2009). The key distinction is that cost drivers are assigned differently — in a manner that better reflects actual resource usage — rather than being selected on an ad hoc basis (Investopedia, 2013).
Using ABC, overhead is divided into three categories: deliveries to retailers, set-up costs for production, and the cost of processing purchase orders. Each category is allocated to each product according to how much of that activity each product actually consumes. The ABC net profit calculations for Vroom's three product lines are as follows.
Vroom plc — Net Profit by Product (Driver: ABC)
| Sunshine | Roadster | Fireball | Total | |
|---|---|---|---|---|
| Output | 250,000 | |||
| Direct Labour (DL) | 100,000 | 110,000 | 40,000 | |
| Revenue | 2,800,000 | |||
| Less: DL | 1,100,000 | 400,000 | ||
| Less: Materials | 400,000 | 480,000 | 180,000 | |
| Less: Deliveries | 800,000 | 640,000 | 560,000 | |
| Less: Set-ups | 2,666,667 | 1,000,000 | ||
| Less: Purchase Orders | 1,750,000 | 1,312,500 | 437,500 | |
| Net Profit | 1,050,000 | 1,800,833 | (110,833) |
ABC vs. Direct Labour: Comparative Results
The current system uses direct labour hours as the means by which overhead is allocated. This is not an accurate reflection of how overhead costs are actually incurred — it is, in fact, a shorthand assumption that bears little relationship to reality. Using direct labour hours as the means of allocating overhead tells us that each of Vroom's products is profitable. Activity-based costing gives us a different and more revealing result.
Activity-based costing requires a higher standard of information gathering than traditional costing. Instead of relying on an unsubstantiated assumption that there is a link between direct labour hours and overhead costs incurred for a given product, ABC requires the gathering of accurate, activity-level data. This data is then used directly in the decision-making process. ABC is therefore superior in terms of its inputs, and it follows that ABC also produces a more useful output.
Each overhead category — deliveries, set-ups, and purchase orders — incurs different costs, and ABC allocates those costs on the basis of how much each product actually consumes. Some products require more work in terms of servicing retailer accounts and incur greater productivity losses due to set-up time. Activity-based costing requires us to gather that information and incorporate it into our analysis.
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