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CMA Final · Strategic Cost Management · Throughput Accounting

Under throughput accounting as used in Theory of Constraints, which one of the following costs is treated as a truly variable cost when computing throughput for a product?

Raw materials bought from outside suppliers and consumed in the product are the truly variable cost in throughput accounting. Throughput equals sales less such costs. Fixed-wage labour, rent, depreciation and salaries are treated as operating expenses, not deducted when computing throughput.

  1. ADirect labour paid on a fixed monthly wage
  2. BFactory rent and depreciation
  3. CRaw materials purchased from outside suppliers and consumed in the productCorrect
  4. DSupervisors' salaries

Explanation

Throughput is sales revenue minus totally variable costs, which are mainly purchased direct materials (and items such as bought-in components or sales commission). Fixed-wage labour, rent, depreciation and salaries are operating expenses that do not vary with output in the short run, so they are excluded from throughput.

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