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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
Saving Europe?: The Unpleasant Arithmetic of Fiscal Austerity in Integrated Economies
What are the macroeconomic effects of tax adjustments in response to large public debt shocks in highly integrated economies? The answer from standard closed-economy models is deceptive, because they underestimate the elasticity of capital tax revenues and ignore cross-country spillovers of tax changes. Instead, we examine this issue using a two-country model that matches the observed elasticity of the capital tax base by introducing endogenous capacity utilization and a partial depreciation allowance. Tax hikes have adverse effects on macro aggregates and welfare, and trigger strong ...
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
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 ...
Working Paper
Natural Resources and Sovereign Risk in Emerging Economies: A Curse and a Blessing
Emerging economies that are large oil producers have sizable external debt, their country risk rises when oil prices fall, and several of them have defaulted at least once since 1979. Moreover, while oil and non-oil output reduce country risk on impact and in the long-run, oil reserves reduce it marginally on impact but increase it in the long-run. We propose a model of sovereign default and oil extraction consistent with these observations. The sovereign manages oil reserves strategically to make default less painful by altering the value of autarky, and hence its sustainable debt falls. All ...
Working Paper
An anatomy of credit booms: evidence from macro aggregates and micro data
This paper proposes a methodology for measuring credit booms and uses it to identify credit booms in emerging and industrial economies over the past four decades. In addition, we use event study methods to identify the key empirical regularities of credit booms in macroeconomic aggregates and micro-level data. Macro data show a systematic relationship between credit booms and economic expansions, rising asset prices, real appreciations, widening external deficits and managed exchange rates. Micro data show a strong association between credit booms and firm-level measures of leverage, firm ...
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
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
Resource Curse or Blessing? Sovereign Risk in Resource-Rich Emerging Economies
In this paper we document the stylized facts about the relationship between international oil price swings, sovereign risk and macroeconomic performance of oil-exporting economies. We show that even though being a bigger oil producer decreases sovereign risk?because it increases a country?s ability to repay?having more oil reserves increases sovereign risk by making autarky more attractive. We develop a small open economy model of sovereign risk with incomplete international financial markets, in which optimal oil extraction and sovereign default interact. We use the model to understand the ...
Working Paper
The syndrome of exchange-rate-based stabilizations and the uncertain duration of currency pegs
This paper conducts a quantitative examination of the hypothesis that uncertain duration of currency pegs causes the sharp real appreciations and business cycles that affect chronically countries using fixed exchange rates as an instrument to stop high inflation. Numerical solutions of equilibrium dynamics of a two-sector small open economy with incomplete markets show that uncertain duration rationalizes the syndrome of exchange-rate-based stabilizations without price or wage rigidities. Three elements of the model are critical for these results: (a) a strictly-convex hazard rate function ...