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SingaporeElements of Business SkillsSyllabus dot point

Where does a business get its money from, and what does it spend money on?

Explain the main sources of income for a business and the main types of cost, and the difference between fixed and variable costs

A simple guide to where a business gets money and what it spends. Sources of income, types of cost, and the difference between fixed and variable costs, with Singapore examples.

Generated by Claude Opus 4.87 min answer

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What this dot point is asking

You need to explain the main sources of income for a business and the main types of cost, and the difference between fixed and variable costs. Income is the money a business takes in; costs are what it spends. Keep your answer practical and tied to a real business such as a cafe or bakery, and be ready to sort costs into fixed (stay the same) and variable (change with how much is made or sold).

The answer

Where a business gets its money: income

Income (also called revenue) is the money a business takes in. The main source for most businesses is sales - the money customers pay for the goods or services. A cafe's main income is the money customers pay for food and drinks.

A business may also get money from other sources, such as money the owner puts in to start it, or a loan from a bank, but the main ongoing income is sales.

What a business spends: costs

Costs are the money a business spends to run. Common costs include:

  • Rent for the shop or premises.
  • Wages for the staff.
  • Stock or materials - the goods or ingredients to sell or use.
  • Utilities - electricity, water, gas.
  • Equipment - machines, tills, furniture.
  • Other costs - cleaning, packaging, advertising.

A business must keep its total costs below its income to make a profit.

Fixed costs

A fixed cost stays the same no matter how much the business makes or sells. The business pays it even in a quiet week. Rent is the classic example: the bakery pays the same rent whether it sells a lot or a little. Insurance and a manager's monthly salary are also fixed.

Variable costs

A variable cost changes with how much the business makes or sells. The more it makes, the higher the cost. Ingredients are the classic example: the more bread a bakery bakes, the more flour and eggs it uses. Packaging usually rises with sales too.

Why the difference matters

The difference matters because a business must pay its fixed costs even when sales are low, so it needs enough income to cover them. Knowing its fixed and variable costs helps a business work out its total costs, set fair prices, and plan for quiet times.

Examples in context

Example 1. A bakery in a quiet week. Even when few customers come, the bakery still pays its rent and the baker's monthly salary - these fixed costs do not fall. But it uses less flour and fewer eggs because it bakes less, so these variable costs drop. This shows why a business needs enough income to cover fixed costs even in slow periods.

Example 2. A bubble-tea stall on a busy weekend. On a busy day the stall's income from sales rises sharply. Its variable costs - cups, tea, milk, pearls - also rise because it makes more drinks. But its fixed rent for the unit stays exactly the same. Sorting costs this way helps the owner see how busy days affect her money.

Try this

  • Cue. State the main source of income for a shop, and list four costs a shop has to pay. Remember the main income is sales, then name real costs such as rent, wages, stock, and utilities.

  • Cue. Explain the difference between a fixed cost and a variable cost, with an example of each for a cafe. Remember fixed stays the same (rent) and variable changes with how much is made or sold (ingredients).

  • Cue. Explain why the difference between fixed and variable costs matters to a business. Link it to having to pay fixed costs even when sales are low, and to planning, pricing, and working out total costs.

Exam-style practice questions

Practice questions written in the style of SEAB exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.

Original4 marksA cafe earns money and also has many costs. (a) State the main source of income for the cafe. (b) List four costs the cafe has to pay.
Show worked answer →

(a) The main source of income is sales - the money customers pay for food and drinks (sales revenue).

(b) Four costs: rent for the shop, wages for the staff, ingredients or stock (food and drink supplies), and electricity or utility bills. Equipment and cleaning supplies are also accepted.

What markers reward: the main income correctly named as sales or sales revenue, and four real, sensible costs a cafe actually pays.

Original5 marks(a) Explain the difference between a fixed cost and a variable cost. (b) For a bakery, give one example of a fixed cost and one example of a variable cost, and explain why the difference matters.
Show worked answer →

(a) A fixed cost stays the same no matter how much the business makes or sells, such as rent. A variable cost changes with how much the business makes or sells, such as ingredients - the more bread baked, the more flour is used.

(b) Fixed cost: rent for the bakery, which is the same each month. Variable cost: flour and eggs, which rise when more is baked. The difference matters because the business must pay fixed costs even when sales are low, so it needs enough income to cover them; knowing both helps it work out its total costs and price its products.

What markers reward: a clear fixed-versus-variable difference (stays the same vs changes with output), a correct example of each for a bakery, and a reason the difference matters (planning, covering fixed costs, pricing).

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