This paper examines inflation as a macroeconomic phenomenon, tracing its manifestations from mild price increases to hyperinflation with historical examples from Germany, Hungary, and Brazil. It explains how inflation signals monetary disequilibrium and surveys the principal causes: demand-pull, cost-push, imported, and structural inflation. The paper also classifies inflation by whether it is anticipated or unanticipated and whether it is open or repressed. It concludes by evaluating traditional anti-inflationary policy instruments—price freezes, fiscal and budget measures, credit restrictions, and income policies—assessing their practical limitations and trade-offs.
Inflation, as a sign of disequilibrium in the economy, is proportional to the magnitude of that disequilibrium: its level is higher as the gap between total demand and total supply widens.
Price increases, as an expression of inflation, may take values ranging from 0.5–1% to two- or three-digit figures per year. This is the case of rampant inflation, which manifested itself in recent decades in countries such as Italy in the 1970s, several countries in Latin America during the 1970s and 1980s, and Israel at the beginning of the 1980s. At the start of the 1990s, some countries in a "transition phase" faced rampant inflation. Although inflationary pressures were high, the economies of these countries continued to function; there were even situations of remarkable economic performance, such as Brazil in the 1980s and Turkey in the 1990s.
When inflation brings an annual price increase written with three or four figures, the phenomenon is called hyperinflation. There is a conventional threshold for this type of inflation: a monthly price increase of more than 50%, which corresponds to a rate of approximately 13,000% per year.
Known cases of hyperinflation are rare; the cases of Germany, Hungary, and Brazil are most frequently cited in the economic literature.
In Germany's case, during 1922–1923, prices rose more than ten billion times. The effect was a diminution of the monetary base, in real terms, by a factor of 30. Wages in real terms fluctuated by more than 33% from month to month.
Hungary went through two periods of hyperinflation: March 1923–February 1924 and August 1945–July 1946. Similar episodes were recorded in Poland, Yugoslavia, and the Soviet Union at the beginning of the 1990s.
In Brazil during 1989, prices grew by 1,650%, which corresponds to a daily increase of 0.78%.
The soaring of prices is one effect of inflation; the other is the increase in the quantity of money available in the economy. High inflation rates are often associated with substantial increases in the money supply. The inflationary phenomenon, which grew over time to enormous proportions, presents two characteristics in the last 50 years. First, price rises were extremely diverse throughout the economy, varying significantly from sector to sector, which indicates a disproportionate increase in consumption. Second, inflation is a sign of monetary depreciation.
It is not entirely accurate to equate general price increases with inflation. It is more precise to say that price rises are accompanied by inflation and a depreciation of the value of money. This depreciation rests on a fundamental truth: if a monetary unit is worth less, it will be available in greater quantity. Therefore, price increases are caused by an abundance of means of payment. If a price indicates the relative value of a product, then the price index is relevant to the purchasing power of the national currency.
Inflation, as the principal form of monetary disequilibrium, presents itself in various forms depending on the causes that generate it.
Demand-pull inflation is generated by disequilibria on the market for goods and services — specifically, by the excess of demand for goods over a globally inelastic supply. The effect of such disequilibria is an increase in the prices of goods and services, driven by an increase in the money supply.
The causes that drive the quantity of money upward are tied to surpluses in the balance of payments, excessive monetary creation, and shifts in the relationship between savings and consumption. The inelasticity of supply is caused by an insufficiency of goods in stock or even by their complete absence, and may be temporary or long-term. Such disequilibria initially manifest within one economic sector and then extend, by specific mechanisms, to the entire economy. These mechanisms include inter-industry relationships, increases in incomes and the resulting demand for goods and services, the "contagious" effect of rising incomes, and the generalization of price increases.
Cost-push inflation is generated by union demands for wage increases in areas where productivity is not on an upward slope. The consequence of such wage modifications is a change in the price of goods and services produced by those workers and, subsequently, a generalization of the phenomenon. The basis for the price increase is the divergence between the evolution of productivity and the evolution of wages. Statistically, if productivity rises by 5% and wages by 9%, prices will rise by approximately 4%. If the wage level exceeds the price level, the corresponding difference is transformed into profit.
Imported inflation is the result of national economies participating in international trade flows of capital, goods, and services, and is caused by the imports of a particular country. An unfavorable variation in foreign exchange rates is, for importers, a mechanism that generates an inflationary process, since production costs rise under the pressure of "imported" prices.
"Anticipated vs. unanticipated; open vs. repressed"
"Price freezes, fiscal tools, credit limits, income policy"
All these measures utilize one common method: reducing economic activity. Consequently, other means have been sought in order to influence the general level of prices without affecting economic activity. Two important analytical frameworks in this regard are the inflationary gap (expressed in the national income identity Y = I + C + G + X) and the Phillips Curve, which describes the empirical relationship between inflation and unemployment. Together, these frameworks remain central tools for understanding how inflationary pressures interact with broader macroeconomic performance.
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