8.1 Government Policies to Achieve Efficient Resource Allocation and Correct Market Failure

2026 📋 Syllabus Objectives

By the end of these notes, you should be able to:

  1. Explain and evaluate the measures governments use to tackle different forms of market failure, including:

    • Specific and ad valorem indirect taxes
    • Subsidies
    • Price controls
    • Production quotas
    • Prohibitions and licences
    • Regulation and deregulation
    • Direct provision
    • Pollution permits
    • Property rights
    • Nationalisation and privatisation
    • Provision of information
    • Behavioural insights and 'nudge' theory

  2. Understand government failure in microeconomic intervention, including its definition, causes, and consequences.

📖 Background: Why Does the Government Intervene?

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Before we look at the tools the government uses, it is important to understand why it intervenes in the first place.

In a free market (a market with no government involvement), resources are allocated by the forces of supply and demand. Ideally, this leads to allocative efficiency — meaning goods and services are produced in the amounts that consumers actually want, and nothing is wasted.

However, markets sometimes fail. Market failure means the free market does not allocate resources efficiently on its own. This can happen because of:

  • Negative externalities — when producing or consuming something harms others (e.g. pollution from a factory)
  • Positive externalities — when producing or consuming something benefits others who don't pay for it (e.g. education, vaccinations)
  • Public goods — goods that the market will not provide at all because no one can be charged for using them (e.g. street lighting)
  • Information failure — when buyers or sellers don't have accurate information to make good decisions (e.g. people underestimating the harm of smoking)
  • Merit goods — goods that are better for people than they realise, so the free market under-provides them (e.g. healthcare, education)
  • Demerit goods — goods that are worse for people than they realise, so the free market over-provides them (e.g. cigarettes, alcohol)
  • Monopoly power — when one firm dominates a market and charges high prices unfairly

When market failure occurs, the government may step in to correct the problem and move the market closer to allocative efficiency. The rest of these notes explain the tools it uses and how effective they are.

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