Model essay (b): is deflation worse than inflation?

What this lesson teaches

• I can explain how these macroeconomic problems hurt households, firms and governments.

  Syllabus 9570, 3.2.2(b). Macroeconomic Issues: Consequences of undesirable economic growth, unemployment, price instability, persistently large balance of trade deficit or surplus for economic agents on the standard of living

Make a guess

Prices fall because demand is collapsing. Why can this make people spend even less?

1. They delay buying, expecting lower prices later.
2. Shops close, so people have fewer places left to spend.
3. They have more money left over to save.

The answer to part (b)

Introduction

Deflation is a sustained fall in the general price level, while inflation is a sustained rise. Both can harm an economy. This essay argues that deflation caused by falling demand is usually more harmful than mild inflation, because it can feed on itself. But deflation from rising productivity is harmless, and high inflation can be more damaging than mild deflation. The judgement depends on the cause, the rate and how expectations respond.

Paragraph 2: deflation can become a spiral

When people expect prices to keep falling, they delay buying cars, appliances and homes, because waiting makes them cheaper. Firms see weaker demand and delay investment. In Figure 2, AD falls from AD0 to AD1, so the price level falls to P1 and real output to Y1. Firms cut jobs and wages, so incomes fall, people spend even less, and AD falls again. This deflationary spiral can be hard to escape. Japan's long period of falling or flat prices from the late 1990s came with years of weak growth.

Paragraph 3: deflation raises real debts and unemployment

Deflation also makes debts heavier. The amount owed on a loan is fixed, but when prices and incomes fall, it takes a larger share of income to repay. Households and firms with debts cut spending to repay them, and some default, which harms banks. Wages are also slow to fall, because workers resist pay cuts. So when prices fall, real wages rise, and firms hire fewer workers, raising unemployment. Monetary policy also struggles. Interest rates cannot be cut much below zero, so when prices are falling, real interest rates stay high and borrowing stays costly.

Paragraph 4: the costs of inflation

Inflation also does harm. It reduces the purchasing power of money, so people on fixed incomes, such as retirees living on savings, can buy less. Lower-income households suffer most, because food and transport, whose prices often rise fastest, take a larger share of their budgets. Unexpected inflation redistributes income from savers to borrowers. It makes planning harder, so firms may delay investment. If a country's inflation is higher than its trading partners', its exports become less competitive. Very high inflation can destroy trust in money altogether.

Paragraph 5: when each is less harmful

Not all deflation is harmful. If prices fall because productivity rises, as with computers and phones, output and real incomes rise too. Singapore saw mild deflation in 2015 and 2016, and again in 2020, mainly because world oil prices fell, and it did not set off a spiral. Mild, stable inflation of around 2% is also not very harmful. People expect it and plan for it, and it gives firms room to adjust real wages without cutting pay.

Paragraph 6: evaluation

Which is more harmful depends first on the cause. Deflation caused by falling AD is the dangerous kind, because it cuts output and jobs and feeds on itself. Deflation caused by cheaper imports or higher productivity is not. It depends second on the rate and on expectations. Mild inflation is less harmful than demand-driven deflation, because it does not trigger delayed spending or heavier debts. But rapid, unpredictable inflation can be more harmful than mild deflation, because it erodes savings and trust in money.

Conclusion

Deflation is more harmful than inflation when it comes from falling demand. It can start a spiral of delayed spending, heavier debts and rising unemployment that policy finds hard to stop. It is not always more harmful: deflation from rising productivity does little damage, and high inflation can be worse than mild deflation.

Margin notes: how each paragraph scores

Introduction

Defines both terms, gives a stand with conditions and names three criteria.

Paragraph 2

L3 analysis: the deflationary spiral step by step on Figure 2, with Japan as real evidence.

Paragraph 3

Three more costs of deflation (real debt, sticky wages, the limit on interest rates), each with its reason.

Paragraph 4

The other side: the costs of inflation, saying who is hurt and why. Two-sided analysis is required for L3.

Paragraph 5

Separates benign from harmful cases, with Singapore's deflation in 2015-16 and 2020. This sets up the evaluation.

Paragraph 6

E3: two well-explained judgements (cause, rate and expectations), each comparing the two directly.

Conclusion

Answers 'more harmful' with clear conditions.

Overall: L3 and E3, 13 to 15 marks

Both sides analysed with a diagram and real cases, and the comparison is weighed. Describing the costs of each without comparing them would score E1 at most.

Worked example: A 4-minute plan

Fix the stand and criteria, then sort the arguments.

1. Stand: demand-driven deflation is usually more harmful than mild inflation, but not more than high inflation. Criteria: cause, rate, expectations.
2. Deflation: delayed spending, spiral (Figure 2); heavier real debt; sticky wages, unemployment; policy limits.
3. Inflation: lost purchasing power, fixed incomes; uncertainty; redistribution; competitiveness.
4. Judge: benign deflation from productivity is harmless; high inflation can be worse.

Watch out for this

Falling prices are always good, because everyone can buy more.

If prices fall because demand is collapsing, incomes and jobs fall too, and people delay spending. Falling prices are only harmless when they come from higher productivity.

Check your understanding

Why does deflation make debts harder to repay?

1. Banks raise the amount owed when prices fall to protect their profits.
2. Deflation raises interest rates automatically, so monthly repayments go up.
3. The sum owed is fixed while prices and incomes fall, so it weighs more.