Question and essay plan
The annual rate of inflation in the UK was 2.8% in April 2026. However, back in September 2015, the annual rate of inflation was negative, at -0.1%.
Question: Evaluate the view that the consequences of inflation are worse than the consequences of deflation (25 marks).
Quick essay plan:
- Intro: define inflation, deflation.
- Analysis point 1: contraction in AD due to inflation – reduction in consumption and exports.
- Evaluation point 1: importance of other countries’ inflation rates for effect on exports.
- Analysis point 2: deflation / expectations of continued deflation can lead to a deflationary spiral.
- Evaluation point 2: depends how long deflation is expected to last. May be temporary.
- Conclusion: Deflation is worse – harder to fix and deflationary spiral can be particularly harmful. Depends on the cause of deflation.
Full model answer
Inflation is a persistent increase in the price level. Deflation is when the rate of inflation is negative.
Inflation may be associated with slower economic growth through a contraction in aggregate demand. The rate of inflation reached 11.1% in October 2022 in the UK, well above the Bank of England’s target range of 2% +- 1 percentage point. If the price level is increasing, this reduces the purchasing power of consumers for those whose wages rise more slowly than inflation. This could include public sector workers. So consumption falls. In addition savers see the real value of their savings eroded due to inflation. This reduces the real value of their wealth, reducing savers’ confidence, which may lead to consumption falling further. A higher price level in the UK relative to other countries could reduce export demand, as foreign consumers switch to buying goods from elsewhere. This reduces the level of UK exports. As consumption and exports are components of aggregate demand (AD = C + I + G + X – M), a higher UK price level leads to a contraction in AD in the UK. This is associated with falling real GDP, as the price level rises from PL1 to PL2, real GDP falls from Y1 to Y2. Reduced economic activity could reduce real incomes, making it even harder for consumers to afford goods and services.
However, whether UK inflation reduces export competitiveness depends on other countries’ inflation rates. Inflation could be caused by a rise in global energy prices, as was the case in 2022. This could lead to cost-push inflation throughout the global economy. So UK exports would not lose their price competitiveness as foreign goods would not appear cheaper. So UK exports may not fall as much, so UK aggregate demand may not fall as much following inflation in the UK.
Deflation could lead to a deflationary spiral. Japan experienced a cumulative reduction in the price level by 4% from 1998 to 2012, contributing to a “lost decade” of economic growth. Deflation in Japan may increase the real value of their debt. This reduces the value of borrowers’ real wealth. This could reduce borrower confidence, which could reduce consumption. Moreover, consumers may believe that the deflation means prices may be lower in the future, so the expected rate of inflation may fall and become negative. So consumers may delay consumption, expecting they can buy the goods for a cheaper price in the future and thus save money. As consumption is a component of AD, AD could shift left from AD to AD1. This could reduce the price level further from PL1 to PL2. This could lead consumers to delay their consumption even further. So AD may shift further left from AD1 to AD2. Altogether this results in the price level falling from PL1 to PL3, while real GDP for Japan falls from Y1 to Y3, meaning slower economic growth.
However, this depends how long the deflation is expected to last. Deflation may be temporary, for example where the central bank intervenes with lower interest rates. An example is the UK Bank of England lowering interest rates to 0.1% in the Covid-19 pandemic. This could make borrowing cheaper, leading to an increase in borrowing to fund consumption. This could boost consumption and aggregate demand, leading to a higher equilibrium price level. Because consumers may expect the Bank of England to intervene, inflation expectations may remain above zero, even when there is deflation today. So consumes may not delay consumption, so there may not be a deflationary spiral.
Overall, the consequences of deflation are likely to be worse than the consequences of inflation. A deflationary spiral can slow economic growth and it may not always be possible to eliminate deflation with lower interest rates. It is difficult for interest rates to be set significantly below zero, as this could cause savers to take their money out of the banks to avoid losing money, which could lead to bank failure. This effective lower bound on interest rates mean deflation may become permanent rather than temporary. However, in the presence of inflation, interest rates can always go higher to make inflation a temporary phenomenon. Whether deflation is worse than inflation does depend on the cause of the deflation. Suppose deflation is caused by a shift right in long-run aggregate supply, sometimes referred to as “benign” deflation. For example, this could be because workers are becoming better trained and hence more productive, increasing equilibrium real GDP. So deflation may be associated with economic growth. However, if the inflation is caused by falling AD (“malign”), this is associated with slowing economic growth.
Brief tutor commentary
This answer contains effective explanations. In particular the points for the contraction in AD and the deflationary spiral lend themselves to detailed explanations.
The evaluation points are also well explained and link back to the question.
The importance of other countries’ inflation rates, temporary or permanent deflation or inflation, and the cause of deflation / inflation are typical evaluation points for essays on this topic.
Real world examples are present throughout the response too. I recommend knowing examples of high inflation and deflation in particular.
Altogether, this answer likely scores full marks or close to this.
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