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Working Paper
Supply-side economics in a global economy
Recent quantitative studies predict large welfare gains from reducing tax distortions in a closed economy, despite costly transitional dynamics to more efficient tax systems. This paper examines transitional dynamics and gains of tax reforms for countries in a global economy, and provides numerical solutions for international tax competition games. Tax reforms in a global economy cause cross-country externalities through capital flows in response to consumption-smoothing and debt-servicing effects, with taxes on world payments affecting the distribution of welfare gains. Within the class of ...
Working Paper
Putting the brakes on Sudden Stops: the financial frictions-moral hazard tradeoff of asset price guarantees
The hypothesis that Sudden Stops to capital inflows in emerging economies may be caused by global capital market frictions, such as collateral constraints and trading costs, suggests that Sudden Stops could be prevented by offering price guarantees on the emerging-markets asset class. Providing these guarantees is a risky endeavor, however, because they introduce a moral-hazard-like incentive similar to those that are also viewed as a cause of emerging markets crises. This paper studies this financial frictions-moral hazard tradeoff using an equilibrium asset-pricing model in which margin ...
Working Paper
The business cycles of currency speculation: a revision of the Mundellian framework
In his seminal 1960 study on the dynamics of alternative exchange rate regimes, Robert Mundell proposed a theory of balance-of-payments crises in which speculators base their actions on the observed holdings of central bank foreign reserves. We examine the quantitative implications of this view from the perspective of an equilibrium business cycle model in which rational expectations of a devaluation are conditioned on foreign reserves. The model explains some of the empirical regularities of the business cycle associated with temporary fixed-exchange-rate regimes. In turn, these cyclical ...
Discussion Paper
Rational herd behavior and the globalization of securities markets
This paper shows that globalization of securities markets exacerbates the volatility of capital flows by strengthening incentives for herding behavior. This is a prediction of a mean-variance portfolio optimization model with imperfect information, in which investors acquire country-specific expertise at a fixed cost and incur variable reputational costs. The model produces equilibria in which incentives to confirm rumors decrease with globalization. Simulations based on equity markets data and country credit ratings suggest that herd behavior can induce large capital outflows from emerging ...
Working Paper
Distributional Incentives in an Equilibrium Model of Domestic Sovereign Default
Europe?s debt crisis resembles historical episodes of outright default on domestic public debt about which little research exists. This paper proposes a theory of domestic sovereign default based on distributional incentives affecting the welfare of risk-averse debt and non-debtholders. A utilitarian government cannot sustain debt if default is costless. If default is costly, debt with default risk is sustainable, and debt falls as the concentration of debt ownership rises. A government favoring bondholders can also sustain debt, with debt rising as ownership becomes more concentrated. These ...
Working Paper
On the solvency of nations: are global imbalances consistent with intertemporal budget constraints?
Theory predicts that a nation's stochastic intertemporal budget constraint is satisfied if net foreign assets (NFA) are integrated of any finite order, or if net exports (NX) and NFA satisfy an error-correction specification with a residual integrated of any finite order. We test these conditions using data for 21 industrial and 29 emerging economies for the 1970-2004 period. The results show that, despite the large global imbalances of recent years, NFA and NX positions are consistent with external solvency. Country-specific unit root tests on NFA-GDP ratios suggest that nearly all of them ...
Conference Paper
Putting the brakes on Sudden Stops: the financial frictions - moral hazard tradeoff of asset price guarantees
The hypothesis that Sudden Stops to capital inflows in emerging economies may originate in frictions inherent to global capital markets, such as collateral constraints and trading costs, suggests that Sudden Stops could be prevented by an international organization that offers exante price guarantees on the emerging-markets asset class. Providing these guarantees is a risky endeavor, however, because they introduce a moral-hazard-like incentive similar to those that are viewed as another culprit behind emerging markets crises. This paper studies this financial frictions-moral hazard tradeoff ...
Working Paper
Approximately Right?: Global v. Local Methods for Open-Economy Models with Incomplete Markets
Global and local methods are widely used in international macroeconomics to analyze incomplete-markets models. We study solutions for an endowment economy, an RBC model and a Sudden Stops model with an occasionally binding credit constraint. First-order, second-order, risky steady state and DynareOBC solutions are compared v. fixed-point-iteration global solutions in the time and frequency domains. The solutions differ in key respects, including measures of precautionary savings, cyclical moments, impulse response functions, financial premia and macro responses to credit constraints, and ...
Working Paper
Optimal Domestic (and External) Sovereign Default
Infrequent but turbulent episodes of outright sovereign default on domestic creditors are considered a ?forgotten history? in macroeconomics. We propose a heterogeneous- agents model in which optimal debt and default on domestic and foreign creditors are driven by distributional incentives and endogenous default costs due to value of debt for self-insurance, liquidity, and risk-sharing. The government?s aim to redistribute resources across agents and through time in response to uninsurable shocks produces a rich dynamic feedback mechanism linking debt issuance, the distribution of government ...
Working Paper
Precautionary demand for foreign assets in sudden stop economies: an assessment of the new mercantilism
Financial globalization had a rocky start in emerging economies hit by Sudden Stops. Foreign reserves have grown very rapidly since then, as if those countries were practicing a New Mercantilism that views foreign reserves as a war-chest for defense against Sudden Stops. This paper conducts a quantitative assessment of this argument using a stochastic intertemporal equilibrium framework in which precautionary foreign asset demand is driven by output variability, financial globalization, and Sudden Stop risk. In this framework, credit constraints produce endogenous Sudden Stops. We find that ...