In a surprisingly growing number of regions in Germany private "regional currencies" are issued as a cash substitute for the euro. Currently, these regional currencies are conceived almost exclusively as Schwundgeld (depreciative currency), which loses value on a predetermined timescale. This...

A transactions model of the demand for multiple media of exchange is developed. Some results are expected, and others are both new and surprising. There are both extensive and intensive margins to currency substitution, and inflation may affect the two margins differently, leading to subtle...

In recent years, Bolivia has accumulated a significant level of international reserves due to favorable external environment and the exchange rate regimen (crawling peg). In this context arises the question of: Which one is the optimal level of international reserves? According to the...

Although most CIS and East Asian countries are de jure classified as free floaters, they de facto pursue (tight) dollar pegs. This paper emphasizes dollar denomination of shortterm and long-term payment flows as reasons for exchange rate stabilization. Based on the analysis of ‚competitive...

Central bank policy suffers from time-inconsistency when facing a banking crisis : A bailout is optimal ex post but ex ante it should be limited to control moral hazard. Dollarization provides a credible commitment not to help at the cost of not helping even when it would be ex ante optimal to...

This paper analyzes deviations from uncovered interest rate parity which are interpreted as indicator of the substitutability of currencies. Backward recursive statistical tests and error correction models are applied to study the co-movement of interest rates, and rolling regressions are used...

Tiny changes in the American monetary policy can have dramatic effects on the rest of the world because of its double role of national and international currency. This is what I call the Triffin dilemma, an ever green concept in international finance. In the paper I show how it works through...