money & economicsWikipedia

Inflation is the steady rise in prices that erodes what each unit of money can buy

the gist

Inflation is an increase in the average price of goods and services, measured by a price index such as the consumer price index. When prices rise, each unit of currency buys fewer goods, so inflation is a fall in money's purchasing power. Its causes include growth in the money supply, shifts in demand, supply shocks such as energy crises, and changes in expectations, which can become self-fulfilling. Deflation, a general fall in prices, is its opposite.

how it works

Central banks use interest rates and open market operations to influence how much money circulates. Higher rates make borrowing more expensive, which slows spending and eases price pressure. Lower rates do the reverse.

so what

Moderate inflation can reduce unemployment because wages adjust slowly, but high or unpredictable inflation discourages saving and investment and squeezes real wages. Most economists favour a low, steady rate, which central banks pursue mainly by setting interest rates. Understanding inflation explains why everyday prices and central bank decisions are linked.

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