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A contractor leases a mini-excavator for $1,500 per month. This cost remains constant regardless of how many hours the excavator is used within a month. For job costing purposes, how should this excavator lease payment be classified?

  1. ASemi-variable Cost
  2. BDirect Cost
  3. CFixed Cost
  4. DVariable Cost
Show answer & explanation

Correct answer: C. Fixed Cost

A fixed cost is a cost that does not change in total, regardless of changes in the level of activity (e.g., production volume or hours of use) within a relevant range. The excavator lease payment, being constant monthly, fits this definition.

Why the other options are wrong

  • A. Semi-variable costs have both fixed and variable components, which is not described here.
  • B. Direct costs are directly attributable to a specific job; while it might be allocated, its nature is fixed.
  • D. Variable costs change in total with the level of activity; this cost is constant.

Fixed Cost

A cost that does not change in total as the level of activity (e.g., production, sales, or hours of equipment use) increases or decreases within a relevant range.

  • Examples include rent, insurance, and salaries of administrative staff.
  • Per unit fixed cost decreases as activity increases.
  • Important for break-even analysis and budgeting.

Memory trick: Fixed stays flat, Variable varies.

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