Knowra Hyperinflation Hyperinflation Hyperinflation is an extremely rapid and sustained rise in the general price level that sharply reduces money’s purchasing power. It often coincides with a collapse in confidence in the currency.
Quantity theory of money : A framework relating the money supply, spending velocity, prices, and real output. It links rapid money growth to rising prices, while showing why money demand and output also matter.
German hyperinflation : The severe inflationary crisis in the Weimar Republic that peaked in 1923. It illustrates how fiscal pressure, reparations, and the Ruhr occupation accompanied a collapse in the mark.
Menu costs : The costs businesses incur when changing prices, such as updating labels or computer systems. Frequent repricing becomes a practical burden when prices change rapidly.
Stagflation : The coexistence of high inflation, weak economic growth, and often high unemployment. Stagflation combines inflation with stagnation but does not necessarily involve a runaway collapse in money demand.
Purchasing power : The quantity of goods and services that a unit of money can buy. Its rapid decline is the defining everyday consequence of hyperinflation.
Seigniorage : Government revenue obtained by issuing money rather than collecting taxes or borrowing. When ordinary financing fails, money creation can fund deficits and accelerate price increases.
Hungarian pengő hyperinflation : The postwar Hungarian hyperinflation of 1945–1946, the most extreme recorded episode by monthly inflation rate. It shows how devastating monetary collapse can become amid wartime destruction and fiscal breakdown.
Shoe-leather costs : Resources wasted when people make extra efforts to avoid holding money that loses value. Households and firms spend time and effort minimizing cash balances as purchasing power erodes.
Deflation : A sustained decline in the general price level. Deflation raises money’s purchasing power, the opposite direction from hyperinflation.
Consumer price index : A measure tracking changes in the prices of a representative basket of consumer goods and services. Price indexes help quantify the pace of inflation and identify extreme episodes.
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