What is Deflation?
Deflation is the opposite of inflation — a persistent decline in the average price level of goods and services over time. While cheaper prices sound good, deflation can slow economic growth and create unemployment.
Deflation is a sustained decrease in the average price level, causing each unit of currency to buy more over time. It discourages spending because consumers expect prices to fall further, leading to reduced investment and hiring.
Step-by-step worked examples
Japan's average price level fell from 100 in 1990 to 95 in 2000. What was the deflation rate?
Deflation rate = (New level − Old level) / Old level Deflation = (95 − 100) / 100 = −0.05 = −5% Prices fell 5% over the decade.
With deflation at −2%, a $10 item today will cost how much next year?
New price = Old price × (1 + deflation rate) New price = 10 × (1 − 0.02) = 10 × 0.98 = $9.80 The item is 20 cents cheaper.
A worker earns $50,000 in deflation where prices fall 3%. What happens to real wages?
Real wage = Nominal wage / (1 + deflation) Real wage = 50,000 / (1 − 0.03) ≈ 51,546 Real purchasing power RISES.
Flashcards
Quick quiz
Q1.Deflation means…
Q2.In deflation, why do consumers spend less?
Q3.A $100,000 debt in 5% deflation becomes…
Q4.Japan experienced deflation from the 1990s–2010s. The result was…
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Common mistakes
Thinking deflation means 'cheap and good.' — Correct: Deflation paralyzes spending and investment, harming the economy.
Confusing deflation with disinflation. — Correct: Disinflation = slowing inflation; deflation = negative inflation.
Assuming wages fall slower than prices in deflation. — Correct: Wages often fall faster, hurting workers despite cheaper goods.
Thinking central banks want zero inflation. — Correct: Central banks target 2% inflation to avoid deflation.
FAQ
What is deflation?
Deflation is a sustained decline in average price level, making your money worth more but discouraging spending and growth.
Is deflation the opposite of inflation?
Yes — inflation = rising prices; deflation = falling prices. But they're not equally bad; deflation is more economically harmful.
Why do deflation periods slow the economy?
People delay purchases expecting cheaper prices later, businesses reduce investment, and unemployment rises.
Can governments prevent deflation?
Yes — through monetary policy (printing money, lowering rates) and fiscal policy (spending, tax cuts). Central banks actively avoid deflation.