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The Circular Flow of Income

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Submitted By violoniste48
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Explain, with the aid of appropriate diagrams, how the five sector circular flow of income interacts to generate economic activity.

The circular flow model represents two flows: the real flow of production and the flow of money. The real flow refers to the flow of resources and goods and services within an economy. Firstly, the simple circular flow of income encompasses two closed sectors – firms and households, and two markets – the product and factor. Households sell resources, such as land, labour, capital and enterprise, to firms in the resource market, which then use the resources to produce goods and services, which are then sold back to households in the product market. Households receive income for their resources from firms through rent payments, wages, interest and profits, and they then use that income to purchase goods and services. This model represents a subsistence economy.

However, the simple circular flow of income does not accurately represent the real world as there are many other sectors which contribute to economic activity. A closer approximation of the real world can be arrived at by adding injections and leakages to the model. Leakages are the losses from the flows, and injections are the additions back into the flows. Saving, taxes and imports are all leakages from the circular flow, which are matched by injections, which are investment, government spending and exports. We can now add three more sectors into our model: financial institutions, governments, and other countries.

All five sectors interact to generate economic activity. Savings are the parts of the consumers’ income that are not spent but saved. Investment is spending by firms to produce capital goods. Households place their savings in financial institutions, such as banks, which are leakages as the money is not being spent on goods and services. Firms then obtain funds

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