Pearson Edexcel · A-Level · Economics B
Course version: 9EB0 · Version from Sept 2015
A) The circular flow of income
Full specification wording
Circular flow of income, expenditure and output: a) The circular flow of income
The circular flow of income is a macroeconomic model illustrating how money moves through an economy.
Checked against the Pearson Edexcel 9EB0 specification (opens in a new tab) on .
- Point 1 of 4
- 3 key terms
Study notes
From the checked teaching notes for this specification point.
The idea
The circular flow of income is a macroeconomic model illustrating how money moves through an economy. It demonstrates the continuous flow of income and expenditure between households and firms. Households provide factors of production (land, labour, capital, enterprise) to firms in exchange for factor incomes (rent, wages, interest, profit). Firms use these factors to produce goods and services, which households then purchase using their income. This creates a continuous loop where national income equals national expenditure and national output.
For example: A worker earns a wage from a factory and spends it at a local supermarket, returning the money to the firm sector.
What earns the marks
- Identification of households and firms as the two main economic agents in the basic model.
- Recognition that households supply factors of production and receive factor incomes.
- Understanding that firms supply goods and services and receive consumer expenditure.
- Knowledge that national income, national output, and national expenditure are theoretically equal in this model.
Common mistakes and how to put them right
Confusing the flow of physical goods and services with the flow of money.
Put it right: The money flow goes in the opposite direction to the physical flow.
Assuming the basic circular flow model includes government and international trade.
Put it right: The basic model only includes households and firms.
Believing that households only provide labour.
Put it right: They provide all factors of production, including land, capital, and enterprise.
Exam tips
- When analysing the circular flow, always distinguish clearly between physical flows (goods, services, factors) and monetary flows (income, expenditure).
- Remember the identity that National Income is equivalent to National Output and National Expenditure when answering questions on macroeconomic equilibrium.
- Use the circular flow model to explain how a change in one sector, such as household spending, directly affects another, such as firm revenue.
Try the lesson
The start of the Circular flow of income, expenditure and output: a) The circular flow of income lesson, made from checked teaching notes for this specification point.
Have a go first
In the basic two-sector circular flow of income model, which of the following represents a real flow from households to firms?
Listen
The circular flow of income is a macroeconomic model illustrating how money moves through an economy. It demonstrates the continuous flow of income and expenditure between households and firms. Households provide factors of production (land, labour, capital, enterprise) to firms in exchange for factor incomes (rent, wages, interest, profit). Firms use these factors to produce goods and services, which households then purchase using their income. This creates a continuous loop where national income equals national expenditure and national output. For example, a worker earns a wage from a factory and spends it at a local supermarket, returning the money to the firm sector. A strong answer earns marks for these points. Identification of households and firms as the two main economic agents in the basic model. Recognition that households supply factors of production and receive factor incomes. Understanding that firms supply goods and services and receive consumer expenditure. Knowledge that national income, national output, and national expenditure are theoretically equal in this model. Exam tip: When analysing the circular flow, always distinguish clearly between physical flows (goods, services, factors) and monetary flows (income, expenditure).
Key words
Say what each word means before you turn the card.
National income
Try answering aloud or in your head before turning the card.
Factors of production
Try answering aloud or in your head before turning the card.
Economic agents
Try answering aloud or in your head before turning the card.
See every definition
- National income
- In the model, national income is theoretically equal to national expenditure and national output.
- Factors of production
- Land, labour, capital and enterprise, which households provide to firms in exchange for factor incomes.
- Economic agents
- Households and firms are the two main economic agents in the basic model.
There is more to this lesson
The full lesson goes on to check your understanding and help you earn the marks. Create a free account to carry on, with your progress saved.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge
Test your understanding of Circular flow of income, expenditure and output: a) The circular flow of income
Active recall beats re-reading. Take an instant quiz now to test what you’ve learned and lock it into long-term memory.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge