This book analyzes the revenues from the creation of currency by a central government. Adopting an institutional perspective, it develops a general theory of seigniorage by identifying three monetary regimes in economic history and the history of economic thought: a commodity currency, a fiat currency and a credit currency regime. As such it provides a modern analytical framework to analyze the nature of revenues from the creation of currency and their optimal height, whether currency is issued by means of minting coins, by printing and spending paper notes, by crediting private entities, or combinations thereof. The results of this analysis stretch beyond the immediate topic. The book establishes a relationship between the theory of seigniorage and government debt, the theory of the interest rate, the optimal rate of inflation, or the effectiveness and inflationary limits of outright monetary transactions.

The paper measures the effects of the integration of European financial markets and lower inflation in the EMS on the revenue from seigniorage for the EC member countries with particular focus on the high inflation countries. Assuming that by 1992 all EC members participate fully in the EMS and reserve requirements are unified, the revenue from seigniorage will be reduced by about 2 percentage points of GDP in Greece and Portugal and 0.5-0.8 percentage points in Italy and Spain. Two different measures of seigniorage yield similar results regarding the change, but differ regarding the level.

The elasticity of substitution in transactions between money and bonds is a crucial determinant of the seigniorage- maximizing inflation rate and of whether the semi- elasticity of money demand with inflation increases with inflation.

This paper examines the welfare effects of mitigating the costs of inflation. In a simple model where money reduces transaction costs, a fall in the costs of inflation is equivalent to financial innovation. This can be caused by paying interest on deposits, indexing money, or “dollarizing.” Results indicate that financial innovation raises welfare in low inflation economies while reducing it in high inflation economies, due to the offsetting indirect effect of higher inflation to finance the budget.

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