Economic systems: free market, command and mixed economies

Three systems

• Free market economy: resources are allocated by the price mechanism, through millions of decisions by consumers and privately owned firms. The state's role is minimal (law, defence, property rights). Adam Smith described how self-interest guided by markets can serve the public good, the 'invisible hand'.
• Command (planned) economy: the state owns most resources and decides what, how and for whom to produce, through central planning. Prices and output are set by planners.
• Mixed economy: resources are allocated partly by markets and partly by the state. Every real economy is mixed; they differ in the size of the state's role.

Free markets: merits and problems

Merits:

• efficient allocation: prices signal what consumers want, and profit gives firms an incentive to supply it
• competition encourages low costs, innovation and choice
• consumer sovereignty and economic freedom
• no costly planning bureaucracy

Problems:

• market failure: public goods are not provided, externalities are ignored (pollution), information gaps
• inequality of income and wealth: goods go to those who can pay
• instability: booms, busts and bubbles
• monopoly power can develop

Command economies: merits and problems

Merits:

• the state can provide public goods and merit goods and avoid harmful goods
• can reduce inequality and guarantee basic needs and employment
• resources can be directed quickly to national priorities

Problems:

• information problem: planners cannot know the wants of millions of people, so shortages and surpluses arise
• weak incentives: without profit, firms have little reason to cut costs, innovate or improve quality
• bureaucracy, inefficiency and limited consumer choice
• loss of economic and political freedom

The role of the state in a mixed economy

In a mixed economy the state:

• provides public goods (defence, street lighting) and merit goods (education, healthcare)
• corrects market failure with taxes, subsidies and regulation
• redistributes income through taxes and benefits
• sets laws, protects property rights and promotes competition
• manages the economy to reduce instability

Evaluate: the right balance is a normative question. Too little intervention leaves market failure; too much risks government failure (topic 1.3.6).

Worked example

A country moves from central planning towards a free market. Give one likely benefit and one likely cost.

1. Benefit: prices now signal what consumers want and profit gives firms incentives, so shortages fall and quality and choice improve.
2. Cost: without state provision, inequality may rise and some goods such as public goods may be underprovided.

Answer: Benefit: better incentives and allocation through the price mechanism. Cost: greater inequality and market failure.

Check yourself

1. In a command economy, decisions about what to produce are mainly made by
   • consumers through the price mechanism
   • private firms seeking profit
   • foreign governments
   • the state through central planning
   Show answer

   the state through central planning. Planners set output targets and prices.

2. A key weakness of a command economy is that
   • it always has high inequality
   • planners lack the information to match output to consumers' wants
   • it has no government
   • prices change too quickly
   Show answer

   planners lack the information to match output to consumers' wants. Without prices to signal wants, shortages and surpluses are common.

3. Which is an advantage of a free market economy?
   • Public goods are always provided
   • Income is shared equally
   • External costs are always taken into account
   • Firms have a profit incentive to respond to consumers and cut costs
   Show answer

   Firms have a profit incentive to respond to consumers and cut costs. The profit motive and competition encourage efficiency and innovation.

4. Which best describes a mixed economy?
   • Resources are allocated partly by markets and partly by the state
   • The state owns every firm
   • There is no government intervention
   • Only exports are planned
   Show answer

   Resources are allocated partly by markets and partly by the state. Every real economy combines market and state allocation.

5. Which is a reason for state involvement in a mixed economy?
   • Free markets always produce too much of every good
   • Prices never change in free markets
   • Free markets may underprovide public goods such as street lighting
   • The state can always know consumers' wants better than markets
   Show answer

   Free markets may underprovide public goods such as street lighting. Non-excludable goods are not supplied by profit-seeking firms.

6. Explain why weak incentives may reduce efficiency in a command economy.
   Show answer

   State-owned firms do not keep profits, so managers and workers gain little from cutting costs, improving quality or innovating. Meeting a planned target matters more than satisfying consumers, so resources are wasted.. Link the missing profit motive to behaviour, then to wasted resources.

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Sources

• Pearson Edexcel International Advanced Subsidiary/Advanced Level in Economics specification (2018)

Last updated 8 November 2026. Spotted a mistake? Tell us.