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Optimal Asset Taxes in Financial Markets with Aggregate Uncertainty

Florian Scheuer ()

Review of Economic Dynamics, 2013, vol. 16, issue 3, 405-420

Abstract: This paper studies Pareto-optimal risk-sharing arrangements in a private information economy with aggregate uncertainty and ex ante heterogeneous agents. I show how to implement Pareto-optima as equilibria when agents can trade claims to consumption contingent on aggregate shocks in financial markets. The first result is that if aggregate and idiosyncratic shocks are independent, the implementation of optimal allocations does not require any interventions in financial markets. This result can be extended to dynamic settings in the sense that, in this case, only savings need to be distorted, but not trades in financial markets. Second, I characterize optimal trading distortions in financial markets when aggregate and idiosyncratic shocks are not independent. In this case, optimal asset taxes must be higher for those securities that pay out in aggregate states in which consumption is more volatile. For instance, this can provide an efficiency justification for the frequently observed differential tax treatment of different asset classes, such as debt and equity claims. (Copyright: Elsevier)

Keywords: Insurance; Aggregate uncertainty; Financial markets; Optimal taxation (search for similar items in EconPapers)
JEL-codes: D82 D86 E21 E62 G14 G18 H21 (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1010/j.red.2012.03.002

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