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Might a Securities Transactions Tax Mitigate Excess Volatility?

其他書名	Some Evidence from the Literature
出版	CoFE, 2004
URL	http://books.google.com.hk/books?id=1kvvxwEACAAJ&hl=&source=gbs_api

註釋International financial markets are said to be excessively volatile due to destabilizing speculation and excessive market volume. Transactions taxes might help. From studying the literature we conclude that there must be an optimal market liquidity, which minimizes excess volatility. There are two effects when imposing a transactions tax. Both reduce excess volatility in highly speculative markets when tax rates are small. The total tax effect then is unambiguous. However, in illiquid markets the tax might raise volatility.