Working Papers
2018
June 13, 2018
The Macroeconomic and Distributional Implications of Fiscal Consolidations in Low-income Countries
Description: We quantitatively investigate the macroeconomic and distributional impacts of fiscal consolidations in low-income countries (LICs) through value added tax (VAT), personal income tax (PIT), and corporate income tax (CIT). We extend the standard heterogeneous agents incomplete markets model by including multiple sectors and rural-urban distinction to capture salient features of LICs. We find that overall, VAT has the least efficiency costs but is highly regressive, while PIT impacts the economy in the opposite way with CIT staying in between. Cash transfers targeting rural households mitigate the negative distributional impacts of VAT most effectively, while public investment leads to little redistribution.
June 13, 2018
The Effects of Weather Shocks on Economic Activity: What are the Channels of Impact?
Description: Global temperatures have increased at an unprecedented pace in the past 40 years. This paper finds that increases in temperature have uneven macroeconomic effects, with adverse consequences concentrated in countries with hot climates, such as most low-income countries. In these countries, a rise in temperature lowers per capita output, in both the short and medium term, through a wide array of channels: reduced agricultural output, suppressed productivity of workers exposed to heat, slower investment, and poorer health. In an unmitigated climate change scenario, and under very conservative assumptions, model simulations suggest the projected rise in temperature would imply a loss of around 9 percent of output for a representative low-income country by 2100.
June 13, 2018
The Exposure to Routinization: Labor Market Implications for Developed and Developing Economies
Description: Evidence that the automation of routine tasks has contributed to the polarization of labor markets has been documented for many developed economies, but little is known about its incidence in developing economies. We propose a measure of the exposure to routinization—that is, the risk of the displacement of labor by information technology—and assemble several facts that link the exposure to routinization with the prospects of polarization. Drawing on exposures for about 85 countries since 1990, we establish that: (1) developing economies are significantly less exposed to routinization than their developed counterparts; (2) the initial exposure to routinization is a strong predictor of the long-run exposure; and (3) among countries with high initial exposures to routinization, polarization dynamics have been strong and subsequent exposures have fallen; while among those with low initial exposure, the globalization of trade and structural transformation have prevailed and routine exposures have risen. Although we find little evidence of polarization in developing countries thus far, with rapidly rising exposures to routinization, the risks of future labor market polarization have escalated with potentially significant consequences for productivity, growth and distribution.
June 13, 2018
Short Term Inflation Determinants in Barbados
Description: Inflation in Barbados is mainly imported. But how are external shocks transmitted to the domestic economy? Shouldn’t there be also a domestic component, albeit very small, given the presence of capital controls? We focus on short term dynamics and contribute to the existing literature in three ways: (i) we identify the process with which inflation expectations are likely to be formed in Barbados; (ii) we add forward looking inflation expectations as one of the main channels through which external monetary shocks are transmitted to the economy; and (iii) we measure the importance of domestic shocks. We find that due to the peg, forward-looking inflation expectations in the reserve currency country are an important component of the inflation expectation process in Barbados and that they are a key channel in the international monetary transmission mechanism. Domestic factors, mainly monetary shocks, also matter given the limited degree of monetary autonomy provided by capital controls.
June 13, 2018
Fiscal Adjustment in the Gulf Countries: Less Costly than Previously Thought
Description: This paper estimates fiscal multipliers for the Gulf Cooperation Council (GCC) countries. Using OLS panel fixed effects on a sample of six countries from 1990-2016, results indicate that GCC fiscal multipliers have declined in recent years which would make the on-going fiscal consolidation less costly than previously thought. Though both capital and current multipliers have declined in recent years, capital multipliers are larger than current multipliers, which implies that reducing (less productive) current spending will help limit the adverse impact of such measures on growth.
June 13, 2018
Are Elasticities of Taxable Income Rising?
Description: This paper assesses a possible explanation for the global downward trend in top personal income tax rates over the last decades: globalization and the related tax evasion and avoidance opportunities could have raised elasticities of taxable income, which would imply lower optimal tax rates. The paper estimates elasticities of taxable income for top income earners using a large sample of economies and years with a common method, allowing an analysis of trends in such elasticities. The paper finds that elasticities do not appear to exhibit any clear pattern over the years. The downward trend in tax rates must have other possible explanations, which are briefly discussed.
June 13, 2018
Pushed Past the Limit? How Japanese Banks Reacted to Negative Interest Rates
Description: In this paper, we investigate how negative interest rate policy (NIRP) introduced in January 2016 by the Bank of Japan (BoJ) affected Japanese banks' lending and risk taking behavior. The BoJ's announcement was an unexpected surprise to the market and was followed by a sharp drop in equity prices of Japanese financial firms. We exploit the cross-sectional variation in the change of share prices on the day of the announcement to measure banks' differential exposure to NIRP. We show that more exposed banks increased their credit and took on more risk compared to banks that were less exposed to negative rates.
June 13, 2018
Progressive Taxation of Extractive Resources as Second-Best Optimal Policy
Description: The paper provides a critical review of the literature on the concept of progressivity in the taxation of petroleum and mineral resources and offers a fresh perspective on its purpose and measurement. Regressive taxes, such as royalties, exist to satisfy policy objectives other than revenue maximization, such as achieving early revenues, while rent-based or profit-sensitive fiscal instruments must be designed with progressive marginal rates to maximize government revenues. Hence, the emphasis should be placed on tax rate progression of the direct taxation of profit or rent, rather than progressivity in the overall government take. However, as regressive taxes, by their very nature, tend to be distortionary, the optimal degree of progression in the rent- or profit-tax rates must take these distortions into account. The central ideas are illustrated with a simple analytical model in which a second-best optimal tax rate schedule on profit is characterized in the presence of the tax distortions caused by the regressive taxes. Some practical implications of the analysis are discussed.
June 8, 2018
How Public Investment Could Help Strengthen Iran’s Growth Potential: Issues and Options
Description: Public investment is key to growth in developing oil-exporting countries and oil revenue is an important source of finance for public investment. Assessing the growth impact of public investment in Iran under various investment scaling-up (gradual, aggressive, and conservative) and oil price (baseline and adverse) scenarios, this paper shows that because of absorptive capacity constraint and investment inefficiency the growth outcome of an aggressive investment scaling-up is not significantly different from a conservative or a gradual scenario while its costs, in terms of fiscal adjustment, are significantly higher, especially during low oil price periods. An improvement in investment efficiency has a significant positive impact on growth outcome and leads to higher private consumption and investment. Using an oil fund, on the other hand, can help contain the size of fiscal adjustments, although it would result in a larger appreciation of real exchange rate and deterioration in the current account balance.
June 5, 2018
The U.S. Personal Saving Rate
Description: This paper develops a time series model for aggregate consumption to predict the U.S. personal saving rate. It then uses the model to test whether there has been a structural break in consumption behavior because of the 2008 financial crisis. Before the crisis, the personal saving rate was trending downwards. However, in 2008 there was a significant rise in the saving rate that continued until the end of 2012, suggesting a permanent change in household behavior. To assess this issue formally, the unknown parameters of the model are estimated using data for 1961Q1-2007Q4, a period which precedes the crisis. The model is then used to predict the saving rate from 2008Q1 onwards and to assess whether the rise in the saving rate after 2008 was due to sizable, but transitory, income/wealth shocks or to changes in the underlying elasticities between saving and its determinants (hence structural). The statistical evidence suggests there was no structural break in the household saving behavior, implying that the rise in the saving rate during 2008-2012 was caused by the negative shocks to income, employment and wealth. This result explains why the saving rate resumed its decline in 2013, as real disposable income, employment and net worth recovered. Assuming that the real growth in these determinants remains strong, the estimated model predicts continued negative pressures on the current account deficit and further external imbalances attributable to the U.S. household sector.