Government failure in macroeconomic policies happens when government actions intended to improve the economy lead to worse outcomes than a free market would have produced, or when the costs of these actions are higher than the benefits received.

Key causes of government failure include:

• Policy lags and timing problems: It takes time for the government to recognize an economic issue, agree on a solution, and implement it. By the time the policy starts affecting the economy, the original problem may have already changed or passed.
• Uncertainty and imperfect information: Policymakers often work with inaccurate economic forecasts and do not fully understand how specific parts of the economy will react. This can lead them to choose the wrong tools to fix a problem.
• Crowding out: When the government borrows a lot of money to fund its programs, it can push interest rates higher. These high rates make it harder for private businesses and individuals to borrow, which reduces their investment and spending.
• Misaligned incentives and political economy: Politicians may focus on short-term popularity, such as trying to win an upcoming election, rather than focusing on long-term economic stability. This can lead to moral hazard, where bailouts encourage companies to take too many risks.
• Unintended consequences: Policies often create new problems, such as industries becoming dependent on government subsidies for survival, or cases where large companies gain too much influence over the government regulations meant to control them (known as regulatory capture).