Solutions to Market Failure: Maximum & Minimum Prices · Revision Notes · Economics

Four of the most commonly used methods to address market failure in markets are
- maximum prices
- minimum prices
- indirect taxation
- subsidies
Additional methods of intervention include regulation, nationalisation, privatisation, and government (state) provision of public goods

A maximum price is set by the government below the existing free market equilibrium price and sellers cannot legally sell the good/service at a higher price
Governments will often use maximum prices in order to help consumers.
- Sometimes they are used for long periods of time e.g. housing rental markets.
- Other times they are short-term solutions to unusual price increases e.g. petrol

The initial market equilibrium is at P_eQ_e
A maximum price is imposed at P_max
- The lower price reduces the incentive to supply and there is a contraction in QS from Q_e→ Q_s
- The lower price increases the incentive to consume and there is an extension in QD from Q_e→ Q_d
- This creates a condition of excess demand equal to Q_sQ_d

Advantages	Disadvantages
Some consumers benefit as they purchase at lower prices Maximum prices can stabilise markets in the short term during periods of intense disruption e.g. Covid supplies at the start of the pandemic	Some consumers are unable to purchase due to the shortage The unmet demand usually encourages the creation of illegal markets (black market or grey market) as desperate buyers turn to illegal bidding Maximum prices distort market forces and therefore can result in an inefficient allocation of scarce resources e.g. maximum prices in rentals in the property market create a shortage

A minimum price is set by the government above the existing free market equilibrium price and sellers cannot legally sell the good or service at a lower price
Governments will often use minimum prices in order to help producers or to decrease consumption of a demerit good such as alcohol

The initial market equilibrium is at P_eQ_e
A minimum price is imposed at P_min
- The higher price increases the incentive to supply and there is an extension in QS from Q_e→ Q_s
- The higher price decreases the incentive to consume and there is a contraction in QD from Q_e→ Q_d
- This creates a condition of excess supply Q_dQ_s

Advantages	Disadvantages
In agricultural markets, producers benefit as they receive a higher price (governments will often purchase excess supply and store it or export it) When used in demerit markets, output falls (Ggovernments will not purchase the excess supply of a demerit good) Producers usually lower their output in the market to match the QD at the minimum price and this helps to reduce the external costs	It costs the government to purchase the excess supply and an opportunity cost is involved Farmers may become over-dependent on the government's help Producers lower output which may result in an increase in unemployment in the industry

Advantages

Disadvantages

In agricultural markets, producers benefit as they receive a higher price (governments will often purchase excess supply and store it or export it)
When used in demerit markets, output falls (Ggovernments will not purchase the excess supply of a demerit good)
Producers usually lower their output in the market to match the QD at the minimum price and this helps to reduce the external costs

It costs the government to purchase the excess supply and an opportunity cost is involved
Farmers may become over-dependent on the government's help
Producers lower output which may result in an increase in unemployment in the industry

Minimum prices are also used in the labour market to protect workers from wage exploitation
- These are called national minimum wages
A national minimum wage (NMW) is a legally imposed wage level that employers must pay their workers
- It is set above the market rate
- The minimum wage per hour varies based on age

The demand for labour (D_L) represents the demand for workers by firms
The supply of labour (S_L) represents the supply of labour by workers
The market equilibrium wage and quantity for truck drivers in the UK is seen at W_eQ_e
The UK government imposes a national minimum wage (NMW) at W₁
Incentivised by higher wages, the supply of labour increases from Q_e to Q_s
Facing higher production costs, the demand for labour by firms decreases from Q_e to Q_d
This means that at a wage rate of W₁ there is excess supply of labour and the potential for unemployment equal to Q_dQ_s

Advantages	Disadvantages
Guarantees a minimum income for the lowest-paid workers Higher income levels help to increase consumption in the economy May incentivise workers to be more productive	Raises the costs of production for firms who may respond by raising the price of goods and services If firms are unable to raise their prices, the introduction of a minimum wage may force them to lay off some workers (increase unemployment)

Intervention to address market failure