We argue that a transaction tax is likely to amplify, not dampen, volatility in the foreign exchange markets. Our argument stems from the decentralized trading practice and the presumable discrepancy between 'informed' and 'uninformed' traders' valuations. Since informed 'traders' valuations are likely to be less dispersed, a transaction tax penalizes informed trades disproportionately, leading to increased volatility. Empirical support for this prediction is found by investigating the effect of transaction costs on the volatility of DEM/USD and JPY/USD returns. High-frequency data are used and an increase in transaction costs is found to have a significant positive effect on volatility.
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Paper provided by European University Institute in its series Economics Working Papers with number
ECO2005/19.
Length: Date of creation: 2005 Date of revision: Handle: RePEc:eui:euiwps:eco2005/19
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Find related papers by JEL classification: F31 - International Economics - - International Finance - - - Foreign Exchange F42 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - International Policy Coordination and Transmission G15 - Financial Economics - - General Financial Markets - - - International Financial Markets G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation
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