4.2 Costs, Scale of Production and Break-Even Analysis

Cambridge IGCSE Business Studies (0450)

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2026 Syllabus Objectives

By the end of this topic, you should be able to:

4.2.1 — Identify and classify costs

  • Classify costs as fixed, variable, average, or total, using examples
  • Use cost data to make simple decisions, such as whether to stop or continue production

4.2.2 — Economies and diseconomies of scale

  • Explain the concept of economies of scale with examples (purchasing, marketing, financial, managerial, technical)
  • Explain the concept of diseconomies of scale with examples (poor communication, lack of commitment from employees, weak coordination)

4.2.3 — Break-even analysis

  • Understand the concept of break-even
  • Construct, complete, or change a simple break-even chart
  • Read and interpret a break-even chart
  • Calculate the break-even output from given data
  • Define, calculate, and interpret the margin of safety
  • Use break-even analysis to help make simple decisions
  • Understand the limitations of break-even analysis

Part 1: Identifying and Classifying Costs

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Why do costs matter?

Every business spends money to operate. These spending amounts are called costs. Before a manager makes any decision — such as what price to charge, where to open a factory, or whether to keep making a product — they need to understand their costs clearly. Without this knowledge, a business might accidentally sell products at a loss (selling for less than it costs to make them).

Types of Costs

Fixed Costs (FC)

Fixed costs are costs that do not change no matter how many units the business produces or sells.

  • Even if the business produces zero items, these costs still have to be paid.
  • Even if the business produces 10,000 items, these costs stay the same.

Examples of fixed costs:

  • Rent for the factory or shop
  • Insurance payments
  • Manager salaries
  • Bank loan repayments
  • Machinery purchase costs

Simple way to remember it: Fixed costs are the bills you pay just to keep the doors open — whether you're busy or not.

Variable Costs (VC)

Variable costs are costs that change directly with the amount produced or sold.

  • When output goes up, variable costs go up.
  • When output goes down, variable costs go down.
  • If the business produces zero items, variable costs are zero.

Examples of variable costs:

  • Raw materials (e.g. cloth for a clothing factory)
  • Wages paid to workers directly involved in making the product
  • Packaging materials
  • Electricity used specifically for production

Simple way to remember it: Variable costs follow production. The more you make, the more you spend.

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