Activity-Based Costing vs. Traditional Overhead Allocation
This paper examines overhead cost allocation methods for a boat manufacturing company producing three models: Goose Rocks, Kennebunkport, and Ogunquit. It contrasts a traditional unit-based allocation system with activity-based costing (ABC) using direct labor hours and multiple cost pools. The analysis demonstrates that the traditional method significantly underallocates overhead to the Ogunquit, which is the most labor-intensive model. Using ABC, the paper recalculates unit costs, evaluates profit margins, and determines an appropriate selling price. It also explores breakeven analysis and the implications of volume changes, concluding that more accurate costing leads to better pricing and resource-allocation decisions.
- Traditional Overhead Allocation by Units Produced: Unit-based system understates Ogunquit overhead share
- Reallocation Using Direct Labor Hours: Labor-hours shift most overhead to Ogunquit
- Benefits of Multiple Cost Pools: Multiple pools reflect true resource consumption better
- Activity-Based Costing with Multiple Cost Drivers: ABC tables allocate seven overhead categories by driver
- Unit Cost, Pricing, and Margin Analysis: ABC unit cost drives revised Ogunquit selling price
- Breakeven Analysis and Production Decisions: Volume drop raises costs; breakeven near five units
- Conclusions on Cost Accuracy and Decision-Making: ABC improves pricing, resource allocation, profitability insight
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What makes this paper effective
- Moves logically from a simple unit-based allocation to progressively more sophisticated costing methods, building the argument for ABC step by step.
- Uses concrete numerical tables at each stage so the reader can verify how the reallocation changes cost figures, making the analytical claims easy to follow.
- Connects technical cost calculations directly to managerial decisions — pricing, production volume, and whether to continue a product line — demonstrating applied relevance.
Key academic technique demonstrated
The paper employs comparative quantitative analysis: it runs the same overhead allocation problem through three different methods (unit-based, direct-labor-hour-based, and multi-pool ABC) and then compares outcomes. This side-by-side technique is standard in managerial accounting coursework and effectively shows how the choice of allocation base materially changes reported product costs and downstream business decisions.
Structure breakdown
The paper is organized as a lettered response set (A through L), here regrouped into thematic sections. It opens by critiquing the existing allocation method, introduces two alternative approaches, calculates a full ABC unit cost for the Ogunquit, derives a target selling price based on the Kennebunkport margin benchmark, stress-tests the price at lower volume, and closes with a breakeven calculation and a set of managerial lessons. Each section builds directly on the numbers established in the previous one.
Traditional Overhead Allocation by Units Produced
The traditional allocation system may not be accurate because it allocates overhead based solely on the number of units produced. It does not account for the time required to produce each individual unit. Overhead costs would be more accurate if they reflected not just the number of units, but also the time taken to produce each one. If the Ogunquit consumes more than 12% of the company's total production time, then the current system undervalues it from an overhead allocation perspective.
Manufacturing overhead allocation under the traditional unit-based method produced the following results last year:
Reallocation Using Direct Labor Hours
When overhead is allocated using direct labor hours instead of units produced, the distribution changes dramatically. Because the Ogunquit is far more labor-intensive per unit, it absorbs the largest share of overhead under this approach:
Benefits of Multiple Cost Pools
The use of more than one cost pool improves overhead allocation because it better reflects the way resources are actually consumed in the production of each boat. Relying on a single cost pool places the entire emphasis on just one cost driver — whether that is direct labor hours or the number of boats produced. Using multiple cost pools more accurately captures the totality of resources the company devotes to each product, leading to a more realistic picture of true production costs.
Activity-Based Costing with Multiple Cost Drivers
Applying activity-based costing (ABC) with separate cost pools for each overhead category yields the following allocation across the three models:
The ABC overhead allocated to the Ogunquit across all cost pools amounts to $1,478,863. Divided across 20 units, this yields a per-unit overhead charge of $73,943, which forms the basis for the full unit cost calculation below.
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