Suchergebnisse

We study optimal time-consistent distortionary taxation when the repayment of government debt is not enforceable. The government taxes labor income or issues noncontingent debt in order to finance an exogenous stream of stochastic government expenditures. The government can repudiate its debt subject to some default costs, thereby introducing some state-contingency to debt. We are motivated by the fact that domestic sovereign default is an empirically relevant phenomenon, as Reinhart and Rogoff (2011) demonstrated. Optimal policy is characterized by two opposing incentives: an incentive to postpone taxes by issuing more debt for the future and an incentive to tax more currently in order to avoid punishing default premia. A generalized Euler equation (GEE) captures these two effects and determines the optimal back-loading or front-loading of tax distortions.

This paper studies the design of optimal fiscal policy when a government that fully trusts the probability model of government expenditures faces a fearful public that forms pessimistic expectations. We identify two forces that shape our results. On the one hand, the government has an incentive to concentrate tax distortions on events that it considers unlikely relative to the pessimistic public. On the other hand, the endogeneity of the public's expectations gives rise to a novel motive for expectation management that aims towards the manipulation of equilibrium prices of government debt in a favorable way. These motives typically act in opposite directions and induce persistence to the optimal allocation and the tax rate.

This paper studies the design of optimal fiscal policy when a government that fully trusts the probability model of government expenditures faces a fearful public that forms pessimistic expectations. We identify two forces that shape our results. On the one hand, the government has an incentive to concentrate tax distortions on events that it considers unlikely relative to the pessimistic public. On the other hand, the endogeneity of the public's expectations gives rise to a novel motive for expectation management that aims towards the manipulation of equilibrium prices of government debt in a favorable way. These motives typically act in opposite directions and induce persistence to the optimal allocation and the tax rate.

How should public debt be managed when uncertainty about the business cycle is widespread and debt levels are high, as in the aftermath of the last financial crisis? This paper analyzes optimal fiscal policy with ambiguity aversion and endogenous government spending. We show that, without ambiguity, optimal surplus-to-output ratios are acyclical and that there is no rationale for either reduction or further accumulation of public debt. In contrast, ambiguity about the cycle can generate optimal policies that resemble "austerity" measures. Optimal policy prescribes front-loaded fiscal consolidations and convergence to a balanced primary budget in the long run. This is the case when interest rates are sufficiently responsive to cyclical shocks; that is, when the intertemporal elasticity of substitution is sufficiently low.

In times when elevated government debt raises concerns about dimmer global growth prospects, we ask: How can the government provide incentives for innovation in a fiscally sustainable way? We address this question by examining the Ramsey problem of finding optimal tax and subsidy schemes in a model in which growth is endogenously sustained by risky innovation. We characterize the shadow value of growth and entry in the innovation sector. We find that a profit tax is required to replicate the first-best in order to balance the externalities associated with innovative activity. At the second-best, the profit tax is designed to optimally respond to growth shocks above and beyond what is prescribed by the standard tax-smoothing incentives in economies with exogenous growth. The interplay of risk and innovation opens a new margin for optimal taxation.