Research Database

Using 50 years of data for emerging markets, we document that sovereign governments partially default often and with varying intensity, resulting in lengthy default episodes with hump-shaped patterns for partial default and debt. Default episodes lead to haircuts for lenders but not to reductions in debt, because the defaulted debt accumulates and the sovereign continues to borrow. We present a theory of partial default that replicates these properties, which are absent in standard sovereign default theory. Partial default is a flexible way to raise funds, as the sovereign chooses its intensity and duration, but it also amplifies debt crises as the defaulted debt accumulates at increasingly high interest rates. This theory rationalizes the patterns of default episodes, the heterogeneity of partial default, and partial default's comovements with spreads, debt, and output. We conduct policy counterfactuals in the form of pari passu and no-dilution clauses and debt relief policies, and we discuss their welfare implications.

We analyze the magnitude and persistence of the racial wealth gap using a long-run model of heterogeneous dynasties with an occupational choice and bequests. Our innovation is to introduce endogenous beliefs about risky returns, reflecting differences in dynasties' investment experiences over time. Feeding the exclusion of Black dynasties from labor and capital markets into the model as the only driving force, we find that the model quantitatively reproduces current and historical racial gaps in wealth, income, entrepreneurship, mobility, and beliefs about risky returns. We explore how the future trajectory of the racial wealth gap might change in response to various policies. Wealth transfers to all Black dynasties that eliminate the average wealth gap today do not lead to long-run wealth convergence. The logic is that centuries-long exclusions lead Black dynasties to hold pessimistic beliefs about risky returns and to forgo investment opportunities after the wealth transfer. Investment subsidies toward Black entrepreneurs are more effective than wealth transfers in permanently eliminating the racial wealth gap.

This paper studies the welfare effects of encouraging rural-urban migration in the developing world. To do so, we build and analyze a dynamic general-equilibrium model of migration that features a rich set of migration motives. We estimate the model to replicate the results of a field experiment that subsidized seasonal migration in rural Bangladesh, leading to significant increases in migration and consumption. We show that the welfare gains from migration subsidies come from providing better insurance for vulnerable rural households rather than correcting spatial misallocation by relaxing credit constraints for those with high productivity in urban areas that are stuck in rural areas.

How does wealth taxation differ from capital income taxation? When the return on investment is equal across individuals, a well-known result is that the two tax systems are equivalent. Motivated by recent empirical evidence documenting persistent return heterogeneity, we revisit this question. With heterogeneity, the two tax systems typically have opposite implications for both efficiency and inequality. Under capital income taxation, entrepreneurs who are more productive and therefore generate more income pay higher taxes. Under wealth taxation, entrepreneurs who have similar wealth levels pay similar taxes regardless of their productivity, which expands the tax base, shifts the tax burden toward unproductive entrepreneurs, and raises the savings rate of productive ones. This reallocation increases aggregate productivity and output. In the simulated model parameterized to match the US data, replacing the capital income tax with a wealth tax in a revenue-neutral fashion delivers a significantly higher average welfare. Turning to optimal taxation, the optimal wealth tax (OWT) is positive and yields large welfare gains by raising efficiency and lowering inequality. In contrast, the optimal capital income tax (OKIT) is negative—a subsidy—and delivers lower welfare gains than OWT, owing to the welfare losses from higher inequality. Furthermore, when the transition path is considered, the gains from OKIT turn into significant welfare losses for existing cohorts, whereas OWT continues to deliver robust welfare gains. These results suggest that moderate wealth taxation may be a more appealing alternative than capital income taxation, which can be significantly more distorting under return heterogeneity than under the equal-returns assumption.

We study the COVID-19 epidemic in emerging markets that face financial frictions and its mitigation through social distancing and vaccination. We find that restricted vaccine availability in emerging markets, as captured by limited quantities and high prices, renders the pandemic exceptionally costly in these countries, compared with economies without financial frictions. Improved access to financial markets enables a better response to the delay in vaccine supplies, as it supports more stringent social distancing measures before wider vaccine availability. We show that financial assistance programs to such financially constrained countries can increase vaccinations and lower fatalities, at no present-value cost to the international community.

The appendix accompanies Staff Report 581: Optimal Cooperative Taxation in the Global Economy.

We show that explicitly modeling primary commodities in an otherwise totally standard incomplete markets open economy model can go a long way in explaining the Mussa puzzle and the Backus-Smith puzzle, two of the main puzzles in the international economics literature.

We develop a framework with rich worker heterogeneity, firm monopsony power, and putty-clay technology to study the distributional impact of the minimum wage in the short and long run. Our production technology is disciplined to be consistent with the small estimated employment effects of the minimum wage in the short run and the large estimated elasticities of substitution across inputs in the long run. We find that in the short run, a large increase in the minimum wage has a small effect on employment and therefore increases the labor income of the workers who were earning less than the new minimum wage. In the long run, however, the minimum wage has perverse distributional implications in that it reduces the employment, income, and welfare of precisely the low-income workers it is meant to help. Nonetheless, these long-run effects take time to fully materialize because firms slowly adjust their mix of inputs. Existing transfer programs, such as the earned income tax credit (EITC), are more effective at improving long-run outcomes for workers at the low end of the wage distribution. But combining existing programs with a modest increase in the minimum wage generates even larger welfare gains for low-earning workers.

We consider an economy with perpetual youth and inelastic labor supply that grows endogenously. Consumers are subject to idiosyncratic capital accumulation risk and markets are incomplete. The government purchases consumption goods, makes transfers in the form of baby bonds, and it can use consumption and wealth taxes. The wealth distribution is given in closed form. When the intertemporal elasticity of substitution ɛ is equal to 1, the government can run a permanent primary deficit, up to a finite upper bound, if the coefficient of relative risk aversion is high enough and the factor share of labor is not too close to 1. This causes the risk-free rate r to be below the growth rate g of the economy. But the government can implement Pareto improvements when r - g does not exceed zero by enough. If ɛ ≠ 1, then there may not be an upper bound on the permanent primary deficits of the government. If ɛ Є (0,1), this happens when the economy is relatively unproductive, and then taking deficits to be very large makes all consumers worse off. If ɛ Є (1,∞), very large deficits are possible if the economy is sufficiently productive, and then they imply unbounded Pareto improvements.