Government failure occurs when an intervention leads to a deeper market failure or causes a new market failure.
It can happen if a policy fails to create enough of an incentive for people to change their behaviour or if policies are poorly judged or expensive and make problems worse
Causes of government failure
Distortion of the Market
Government intervention can cause the market to move away from the equilibrium and create shortages
Unintended Consequences
Government intervention can have unexpected adverse effects e.g. increasing benefits may increase unemployment
Information Gaps
Imperfect information may create a welfare loss as the government may over or under subsidise/tax/regulate products