Some microeconomic policies could have adverse macroeconomic impacts and vice versa, for example, indirect taxes to fix market failure could reduce competitiveness and decrease SRAS.
The government has four main macroeconomic objectives to provide macro stability.
The long run trend of economic growth in the UK is about 2.5%.
Governments aim to have sustainable economic growth for the long run.
In emerging markets and developing economies, governments might aim to increase economic development before economic growth, which will improve living standards, increase life expectancy and improve literacy rates.
Governments aim to have as near to full employment as possible.
The unemployment rate in the UK is around 3%.
The labour force should be employed in productive work.
The government inflation target in the UK is 2%, measured with CPI.
This aims to provide price stability for firms and consumers, and will help them make decisions for the long run.
If the inflation rate falls 1% outside this target, the Governor of the Bank of England has to write a letter to the Chancellor of the Exchequer to explain why this happened and what the Bank intends to do about it.
Governments aim for the current account to be satisfactory, so there is not a large deficit.
The government might have the following macroeconomic objectives: Balanced government budget: This ensures the government keeps control of state borrowing, so the national debt does not escalate.
Protection of the environment: This aims to provide long run environmental stability.
Greater income equality: Income and wealth should be distributed equitably, so the gap between the rich and poor is not extreme.
Demand-side policies are policies designed to increase consumer demand, so that total production in the economy increases.
Monetary policy is used by the government to control the money flow of the economy.
Interest rates in the UK are controlled by the Monetary Policy Committee (MPC), which is independent from the government.
Fiscal policy uses government spending and revenues from taxation to influence AD.
The base rate, which controls the interest rates across the economy, is controlled by the Bank of England.
Supply-side policies aim to improve the long run productive potential of the economy.
To improve skills and quality of the labour force, the government could subsidise training, lowering costs for firms and improving the skills of workers.
The Great Depression was caused by the Wall Street Crash of 1929, which led to a huge loss in consumer and business confidence, decreasing consumption and investment.
The Global Financial Crisis, also known as The Great Recession, refers to the decline in world GDP in 2008-2009.
Interest rates were high to help maintain the pound, which came under attack from speculators.
The USA used more expansionary fiscal policy, and this is perhaps why it recovered faster.
To increase incentives, market-based policies could include reducing income and corporation tax to encourage spending and investment.
Market-based policies limit the intervention of the government and allow the free market to eliminate imbalances.
To promote competition, market-based policies could involve deregulating or privatising the public sector, allowing firms to compete in a competitive market.
In 2010, the UK prioritised reducing National Debt but the USA did not make this decision until 2013.
A reduction in the base rate will lead to a rise in AD through a number of transmission mechanisms: Consumption and investment increase due to lower costs of borrowing.
Spending more on healthcare helps improve the quality of the labour force, and contributes towards higher productivity.
Interventionist policies rely on the government intervening in the market.
This may help to reduce occupational immobility.
The government thought balancing the budget was essential so they cut public sector wages and unemployment benefits and raised income tax.
To reform the labour market, market-based policies could involve reducing the NMW or abolishing it altogether, allowing free market forces to allocate wages and the labour market should clear.
The USA introduced protectionism whilst the UK was committed to the gold standard, where its currency was fixed to gold and was overvalued.
The UK cut VAT from 17.5% to 15% and saw a huge increase in government borrowing.
The 1920s had been a period of unsustainable boom and the banking system was unstable; the government allowed the banks to crash.
Higher consumption, due to lower borrowing, will mean that asset prices increase.