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Optimal Policy for Macro-Financial Stability

  • Huigang Chen

    (MarketShare Partners)

  • Eric Young

    (University of Virginia)

  • Christopher Otrok

    (University of Missouri/St Louis Fed)

  • Alessandro Rebucci

    (IADB)

  • Gianluca Benigno

    (London School of Economics)

In this paper we study whether policy makers should wait to intervene until a financial crisis strikes or rather act in a preemptive manner. We study this question in a relatively simple dynamic stochastic general equilibrium model in which crises are endogenous events induced by the presence of an occasionally binding borrowing constraint as in Mendoza (2010). First, we show that the same set of taxes that replicates the constrained social planner allocation could be used optimally by a Ramsey planner to achieve the first best unconstrained equilibrium: in both cases without any precautionary intervention. Second, we show that the extent to which policymakers should intervene in a preemptive manner depends critically on the set of policy tools available and what these instruments can achieve when a crisis strikes. For example, in the context of our model, we find that, if the policy tools is constrained so that the first best cannot be achieved and \ the policy maker has access to only one tax instrument, it is always desirable to intervene before the crisis regardless of the instrument used. If however the policy maker has access to two instruments, it is optimal to act only during crisis times. Third and finally, we propose a computational algorithm to solve Markov-Perfect optimal policy for problems in which the policy function is not differentiable.

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Paper provided by Society for Economic Dynamics in its series 2013 Meeting Papers with number 636.

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Date of creation: 2013
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Handle: RePEc:red:sed013:636
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Society for Economic Dynamics Marina Azzimonti Department of Economics Stonybrook University 10 Nicolls Road Stonybrook NY 11790 USA

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  1. Javier Bianchi, 2011. "Overborrowing and Systemic Externalities in the Business Cycle," American Economic Review, American Economic Association, vol. 101(7), pages 3400-3426, December.
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  5. Gianluca Benigno & Huigang Chen & Christopher Otrok & Alessandro Rebucci & Eric R. Young, 2011. "Financial Crises and Macro-Prudential Policies," IDB Publications (Working Papers) 27738, Inter-American Development Bank.
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