Research

We study the optimal design of corporate tax policy in a textbook life-cycle model featuring two key deviations: (i) firms are imperfectly competitive and (ii) households save by purchasing equity shares in a stock market. In this simple environment, the financial wealth of savers is equal to the sum of the productive capital owned by firms and a component capturing the NPV of unproductive rents – what we term “market power wealth” (MPW). We show that this novel component has non-trivial macroeconomic effects, with important implications for corporate tax policy. In particular, MPW significantly crowds out productive investment and accordingly can rationalize a high corporate tax rate. The optimal corporate tax code in our setting assigns the statutory corporate tax rate to target the financial value of pure profits while incentivizing capital accumulation with a partial expensing of firm investment costs.

This paper proposes a methodology to integrate gender into traditional debt sustainability analysis, which we dub “gender-responsive debt sustainability analysis” (GR-DSA). Standard approaches to assessing debt sustainability focus on fiscal adjustments that stabilize the debt/GDP ratio, either ignoring or underestimating the large social costs — especially along gender lines — of fiscal austerity. In contrast, our GR-DSA explicitly incorporates sociopolitical constraints on the level and composition of fiscal adjustments into the definition of debt sustainability. Paying special attention to the importance for gender equality of safeguarding spending on social infrastructure — e.g. childcare, education, and health care — we show how to calculate the appropriate amount of debt relief when a debt burden is unsustainable. To illustrate the applicability of a GR-DSA, we numerically implement a “proof of concept” based on the current post-pandemic debt crisis and evaluate the debt sustainability of a sample of 68 low and low-middle income countries. Our results suggest that a hypothetical economy with a debt/GDP ratio above the 75th percentile of the 2023 distribution needs debt relief as high as around 30 percent of GDP. Therefore, the key takeaway from our proposed GR-DSA is that failing to seriously consider the gender dimensions of fiscal adjustment packages severely understates the need for debt relief in the current climate, particularly in developing countries.

Technological innovations can expand an economy’s production possibilities frontier, but they may also weaken the effectiveness of its regulations. We build a model in which technical change offers opportunities for circumventing regulations — “regulatory arbitrage.” The function of regulation in our setup is to induce firms to supply a public good. Technologies differ along two dimensions: (a) productivity and (b) the effectiveness of regulation. Although firms have a private incentive to adopt new technologies that lower the burden of regulation, regulatory arbitrage is undesirable from a social perspective. We show that the competitive equilibrium in which firms are free to choose their production technology features both sub-optimal productivity and excessive regulatory arbitrage. In addition, poorly designed regulation can lead firms to shift towards productivity-reducing and high arbitrage technologies. We delineate conditions under which a regulatory authority with limited instruments can nonetheless implement the economy’s first-best.

This paper studies the effects of capital account liberalization on female employment and its implications for structural change in developing countries. Using a large industry-level panel of 88 low and middle-income countries, we provide evidence that episodes of financial liberalization lead to large declines in female employment in tradable sectors. These declines are driven almost entirely by structural reallocation effects between sectors and not by changes in the gender composition of employment within sectors. Based on this evidence, we build a stylized model of a small open economy with tradable and nontradable sectors featuring occupational segregation across genders. We use this framework to study the impact of capital inflows and the female wage penalty on the real exchange rate and female employment in tradables. Our model also implies that when the female burden of non-market home production is sufficiently large, capital inflows will disproportionately hurt female employment relative to male employment.

We study the aggregate and distributional effects of corporate tax reforms when market power is heterogeneous across sectors and firms. We use a life-cycle model with incomplete markets in which capital and equity do not always move in tandem when corporate tax policy changes. On the one hand, the increase in the tax rate causes the classic partial equilibrium effect of reducing the demand for capital; an effect that can be greater or lower depending on different provisions in the tax code and sectoral characteristics. On the other hand, the tax reduces the value of equity wealth due to the taxation of market power rents, shifting the supply of aggregate equity downward and inducing a negative effect on equity returns. This novel general equilibrium effect reduces the cost of capital and is typically expansionary. In our benchmark calibration, designed to match a realistic distribution of markups and markdowns, as well as the institutional details of the US corporate tax code, increasing the corporate tax rate can stimulate aggregate investment, output, and wages. Moreover, this reform reduces wealth inequality as equity shareholders are concentrated at the top.

This paper studies the endogenous reaction of domestic monetary policy to changes in foreign policies. In particular, I examine the existence and magnitude of cross-border strategic spillovers between countries that are tightly linked through global financial and trade networks. Using a spatial / network model that treats every country’s monetary policy as potentially endogenous, I provide empirical evidence that strategic spillovers are not only sizable but are also amplified depending on the network structure of the global economy. That a change in policy in one country leads to an adjustment in policy in another country suggests that the underlying macroeconomic spillovers are significant. I also present evidence that capital account policies provide substantial insulation against foreign monetary shocks.

The consensus view is that capital controls can effectively lengthen the maturity composition of capital inflows and increase the independence of monetary policy but are not generally effective at reducing net inflows and influencing the real exchange rate. This paper studies the adjustment dynamics of the real exchange rate towards its long-run equilibrium and presents empirical evidence that capital controls increase the persistence of misalignments. Allowing the speed of adjustment to vary according to the intensity of restrictions on capital flows, it is shown that the real exchange rate converges to its long-run level at significantly slower rates in countries with capital controls. This result is stronger when the exchange rate is undervalued and is independent of confounding factors such as the exchange rate regime and other forms of heterogeneity affecting the speed of adjustment. I also find evidence that controls on capital inflows have greater effects than controls on outflows. In addition, while the combination of capital controls with a fixed or managed exchange rate regime significantly increases the persistence of misalignments, controls appear to loose traction under more flexible exchange rate arrangements.

The impact of the post-crisis Federal Reserve policy of near-zero interest rates and Quantitative Easing (QE) on income and wealth inequality has become an important policy and political issue. Critics have argued that by raising asset prices, near-zero interest rates and QE have significantly contributed to increases in inequality, while practitioners of central banking, counter that the distributional impact have probably been either neutral or even egalitarian in nature due to its employment impacts. Yet there has been little academic research that addresses empirically this important question. We use data from the Federal Reserve’s Survey of Consumer Finances to analyze the impact of three key channels of QE policy on the distribution of income:  1) the employment channel, 2) the asset appreciation and return channel, and 3) the mortgage refinancing channel. Applying the distributional decomposition method proposed by Firpo et al. (2007), we find that while employment changes and mortgage refinancing were equalizing, these impacts were nonetheless swamped by the large dis-equalizing effects of asset appreciations. In order to identify causality, we propose a simple counterfactual exercise building on the extensive literature on the macroeconomic impacts of QE on asset prices and the unemployment rate. We conclude that QE likely led to a modest increase in income inequality.

Existing empirical studies have focused on determinants of investment. We focus instead on the factors promoting episodes of accelerated capital stock growth that last seven years or longer. After identifying 190 such episodes we employ econometric analysis to explore: (i) the conditions that precede episodes, (ii) structural changes during episodes, and (iii) the characteristics that distinguish episodes that are sustained beyond the final year from those that are not. Turning points in investment tend to be preceded by stable and undervalued real exchange rates, low inflation, and net capital outflows, especially on the portfolio account. We also find some evidence for a positive correlation with large increases in natural resource rents and trade openness. Finally, we find that economies typically experience a shift in economic structure toward the manufacturing sector during periods of accelerated investment.

I build a macroeconomic model of a natural resource abundant small open economy. The model is in the tradition of the canonical dependent economy framework with one key departure: the non-tradable sector features a non-clearing product market due to the existence of search frictions. I study the equilibrium in this economy under the assumption of rigid prices in the non-tradable sector. The equilibrium is shown to be generically inefficient due to aggregate demand externalities arising from natural resource endowments. In this setting, optimal government transfer policy is countercyclical and may entail the permanent buildup of a sovereign wealth fund. I apply this framework to two classic questions in international and development economics: optimal exchange rate policy and development policy in the presence of learning-by-doing spillovers.

This paper studies the social welfare implications of capital controls when controls are imperfectly binding and financial markets actively aim to bypass their enforcement. I consider a series of models of a small open economy featuring a “Dutch disease” externality arising from excessive capital inflows, as well as strategic interactions between a regulatory authority attempting to enforce capital controls and a financial sector attempting to evade them. In contrast to most existing theoretical models, which assume perfectly enforceable capital controls, the effective tax on capital inflows in this essay is endogenously determined by the interplay of the administrative capacity of domestic regulators, the complexity or sophistication of the financial sector, and the existence of regulatory loopholes. The models suggest that capital controls, by internalizing externalities associated with capital inflows, can improve welfare relative to a “laissez-faire” benchmark even when these are imperfectly binding.