Monetary policy and the transmission mechanism, quantitative easing, financial stability, asset bubbles and the regulation of the financial sector.

What this dot point is asking

WJEC wants you to explain how monetary policy works through the transmission mechanism, the role of quantitative easing, and how governments manage financial stability, asset bubbles and the regulation of the financial sector.

The answer

Monetary policy and the transmission mechanism

A cut in the bank rate works through several channels: cheaper borrowing and a lower reward for saving raise consumption and investment; higher asset prices (bonds, shares, houses) raise wealth and spending; and a lower exchange rate raises net exports. Together these raise components of aggregate demand, shifting AD right to raise output and the price level. A rise in the rate does the reverse to curb inflation. In the UK, monetary policy is set by the independent central bank to keep it credible and free of short-term political pressure. Its limits are time lags before spending responds, the weakness of rate cuts at very low rates (the liquidity trap), and that it cannot easily target particular regions.

Quantitative easing

QE was deployed on a large scale after the financial crisis and during the pandemic, when the bank rate had hit its effective floor and conventional rate cuts were exhausted. By lowering long-term borrowing costs and raising asset prices, QE aims to support aggregate demand. Its effects are debated: it may have prevented a deeper slump, but critics argue it inflated asset prices (benefiting wealth-holders and worsening inequality) and that its eventual unwinding (quantitative tightening) is difficult. QE illustrates how monetary policy adapts when the standard interest-rate tool reaches its limits.

Financial stability and regulation

A banking crisis imposes enormous negative externalities on the rest of the economy, lost output, unemployment and the cost of bailouts, as the 2008 crisis showed. Because individual banks do not bear the full systemic cost of their risk-taking (moral hazard), the market under-prices risk and over-lends, then crashes. This market failure justifies regulation: capital and liquidity requirements (banks must hold buffers), stress tests, limits on risky lending, and a lender of last resort (the central bank) to prevent panics. The costs of regulation are that it can raise the cost of credit, push activity into less-regulated "shadow banking", and impose compliance costs, and it cannot foresee every risk. The systemic externalities generally justify regulation, but it must limit risk without unduly choking credit.

Examples in context

Example 1. The Bank of England, rates and QE. Since gaining independence, the Bank of England has set interest rates to meet the 2 per cent inflation target, cutting them to near zero and deploying large-scale QE after 2008 and during the pandemic, then raising rates sharply to fight the 2022 inflation surge. This shows the transmission mechanism, the use of QE when rates hit their floor, and the difficult trade-off between controlling inflation and supporting output.

Example 2. The 2008 crisis and tighter regulation. The 2008 financial crisis, rooted in excessive risk-taking, an asset bubble in housing, moral hazard and systemic contagion, imposed huge costs on the wider economy and led to bank bailouts. The regulatory response (higher capital requirements, stress tests, ring-fencing) is the textbook case of correcting financial market failure, and the ongoing debate over whether regulation is too tight or too loose is exactly the evaluation the exam expects.

Try this

Q1. Name two channels of the monetary policy transmission mechanism. [2 marks]

• Cue. Any two of: the cost of borrowing and reward for saving (consumption and investment), asset prices and wealth, and the exchange rate (net exports).

Q2. Explain why moral hazard in banking is an argument for regulation. [3 marks]

• Cue. If banks expect to be bailed out, they do not bear the full systemic cost of their risk-taking, so they take excessive risk (a market failure); regulation such as capital requirements makes them internalise more of the risk.