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Berentsen, Aleksander
Huber, Samuel
Marchesiani, Alessandro
Year of Publication: 
Series/Report no.: 
Working Paper 176
We investigate the positive and normative implications of a tax on financial market transactions in a dynamic general equilibrium model, where agents face idiosyncratic liquidity shocks and financial trading is essential. Our main finding is that agents' portfolio choices display a pecuniary externality which results in too much trading. We calibrate the model to U.S. data and find an optimal tax rate of 2.5 percent. Imposing this tax reduces trading in financial markets by 30 percent.
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Working Paper

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