different types of costs: fixed, variable, direct and indirect

5.4 Costs – Cost Information

In business, understanding how costs behave helps you plan and price products. We’ll look at four key types of costs: fixed, variable, direct and indirect.

Fixed vs. Variable Costs

Fixed costs stay the same no matter how many items you produce. Variable costs change with production level.

  • 🏠 Fixed: Rent, insurance, salaries of permanent staff.

  • 💡 Variable: Electricity for machines, raw materials, hourly wages.

Mathematically: Total Cost = Fixed Cost + Variable Cost × Quantity → \$C = F + Vq\$

Direct vs. Indirect Costs

Direct costs can be traced straight to a product or service. Indirect costs support several products and cannot be traced to one.

  • 🛠️ Direct: Raw materials, direct labour.

  • 🏢 Indirect: Factory utilities, maintenance, admin salaries.

Example: If you make a T‑shirt, the cotton is a direct cost; the electricity that powers the sewing machine is indirect.

Combining the Concepts

Let’s see how all four types fit together with a simple table.

Cost TypeExampleBehaviour
Fixed DirectPurchase of a sewing machineSame each month, tied to production
Variable DirectCotton for each T‑shirtIncreases with quantity produced
Fixed IndirectFactory rentSame every month, supports all products
Variable IndirectElectricity for lightingVaries with production hours

Quick Quiz

  1. Which cost would you expect to stay the same if you double production?

  2. Identify a direct cost in a coffee shop.

  3. Why is it important to separate direct and indirect costs when calculating product cost?

Answers: 1️⃣ Fixed costs; 2️⃣ Coffee beans; 3️⃣ To allocate costs accurately and set correct prices.