Which costing approach helps avoid fixed overhead distortion in product cost?

Which costing approach helps avoid fixed overhead distortion in product cost?

• A. Absorption costing
• B. Activity-based costing
• C. Variable costing
• D. Cost-plus pricing

Answer: (C)

Understanding how fixed overhead affects product cost is key. When fixed manufacturing overhead is allocated to products, the unit cost can swing with how much is produced, which distorts decisions based on what a unit actually costs to make. Variable costing avoids this by excluding fixed overhead from the inventory cost. Only variable manufacturing costs are included in product cost, while fixed overhead is treated as a period expense. This means the cost per unit reflects the true incremental resources needed for that unit, making it easier to judge profitability, set prices, and perform short-term decisions like make-or-buy or CVP analysis. The other approaches still spread fixed overhead into product costs (or focus on pricing rather than costing), so they don’t eliminate that distortion.

Understanding how fixed overhead affects product cost is key. When fixed manufacturing overhead is allocated to products, the unit cost can swing with how much is produced, which distorts decisions based on what a unit actually costs to make. Variable costing avoids this by excluding fixed overhead from the inventory cost. Only variable manufacturing costs are included in product cost, while fixed overhead is treated as a period expense. This means the cost per unit reflects the true incremental resources needed for that unit, making it easier to judge profitability, set prices, and perform short-term decisions like make-or-buy or CVP analysis. The other approaches still spread fixed overhead into product costs (or focus on pricing rather than costing), so they don’t eliminate that distortion.