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Explaining Community (Social) Surplus

Level:
AS, A Level, IB
Board:
AQA, Edexcel, OCR, IB, Eduqas, WJEC

Last updated 20 Aug 2020

The concept of community of social / society surplus is explored and explained in this short microeconomics video.

Explaining Community (Social) Surplus

What is community surplus?

Community surplus is also known as social or society surplus.

It is the sum of consumer and producer surplus at a given price and quantity in a market.

At a free market equilibrium price, the level of consumer and producer surplus is maximised.

This is also known as the point of allocative efficiency.

In the absence of a change (shift) in demand and/or supply there is no other price and output combination that could increase community surplus.

When community surplus is maximised, an optimum allocation of scarce resources has been achieved.

Using this concept in your economics exams

  • Showing the effects of government intervention such as indirect taxes and producer subsidies
  • Showing the impact on economic welfare of innovation and higher productivity which shows reduces costs and increases supply
  • Analysing the possible impact of monopoly / market power on prices and allocative efficiency / social outcomes

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