How effective is quantitative easing at raising the rate of inflation?

• →Quantitative easing (QE) is an unconventional monetary policy tool whereby a central bank, such as the Bank of England, creates new money electronically and uses it to purchase financial assets, usually government bonds from commercial banks.
• →This injection of liquidity increases the capital (money) held by commercial banks, which should, in theory, lower the cost of borrowing by pushing down long-term interest rates.
• →This means that cheaper credit encourages both consumer spending and business investment, increasing aggregate demand and putting upward pressure on the price level.
• →As a result, QE should help an economy escape deflationary pressure or return inflation towards its target rate. For example, following the 2008 financial crisis, the Bank of England conducted multiple rounds of QE, eventually purchasing over £375 billion of assets by 2012; inflation did remain above the 2% target for much of this period, suggesting some demand-side stimulus occurred.
• →However, the effectiveness of QE in raising inflation is significantly limited when banks choose to hold excess reserves rather than extend lending, this is referred to as a liquidity trap, where the transmission mechanism from asset purchases to real economic activity breaks down. So whilst QE may support inflation expectations and lower borrowing costs at the margins, its ability to reliably raise the rate of inflation is contingent on whether increased bank reserves actually translate into higher consumer and business spending.

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This diagram shows a rightward shift of the money supply curve, reducing the equilibrium interest rate in the money market. In the context of QE, the central bank purchases financial assets from commercial banks, expanding the money supply. The resulting fall in interest rates reduces the cost of borrowing, encouraging consumer spending and business investment — increasing aggregate demand and shifting AD rightward. The diagram illustrates the first stage of the QE transmission mechanism from money supply expansion through to lower interest rates.

• →The monetary transmission mechanism: Understand the full chain from asset purchases → higher asset prices → lower yields → cheaper borrowing → higher spending → higher aggregate demand → higher inflation. A break at any link weakens the policy.
• →Liquidity trap: When interest rates are already close to zero, further monetary loosening may have negligible effect because banks hoard reserves and households prefer to hold cash rather than spend or invest — this is particularly relevant during a deep recession.
• →Inflation expectations: QE works partly by signalling that the central bank is committed to expansionary policy, which can raise inflation expectations and encourage spending before prices actually rise. If credibility is low, this channel also fails.
• →Asset price inflation vs consumer price inflation: QE tends to inflate financial asset prices (equities, bonds, property) more directly than it raises CPI inflation; evaluative answers should distinguish between these effects and consider who benefits.
• →Quantitative vs qualitative easing: The scale of asset purchases matters — small-scale QE in a severely contracted economy may be insufficient to shift aggregate demand meaningfully, whereas large-scale programmes risk overshooting the inflation target if confidence suddenly recovers.

• →This question assesses students' understanding of unconventional monetary policy and its macroeconomic consequences, specifically the mechanisms through which central bank intervention in financial markets is supposed to influence aggregate demand, output, and the price level.
• →It maps to Edexcel spec point 2.6.2.b.o2, which covers the use and effectiveness of monetary policy instruments beyond conventional interest rate adjustments.
• →Strong answers are expected to demonstrate knowledge of the monetary transmission mechanism, apply it to the specific context of raising inflation, and evaluate the conditions under which the policy succeeds or fails — including the role of commercial banks, consumer confidence, and the state of the broader economy.

Examined 3 times across Edexcel since 2017.

The highest tariff recorded — 25 marks in October 2021 — required a diagram, indicating that full evaluation of QE can be examined at the most demanding level on Paper 2.

• →Macroeconomic Objectives and Policies — understanding the inflation target and the broader policy goals of the Bank of England is essential context for evaluating whether QE has succeeded or fallen short of its objectives.