Working Papers
2023
March 17, 2023
A Deep Dive into Tax Buoyancy: Comparing Estimation Techniques in a Large Heterogeneous Panel
Description: This paper provides new empirical evidence on tax buoyancy (tax revenues responsiveness to changes in economic activity) over the period 1990-2020 using a large panel of 185 countries. This study compares short-term and long-term buoyancy coefficients for total tax revenues and different individual taxes by reviewing and contrasting a range of estimators. Our results broadly confirm the main body of the literature on long-term buoyancy hovering around one. We find evidence of lower estimates for short-term buoyancy relative to previous literature, suggesting a limited automatic stabilization power of taxes. As a robustness exercise, in addition to changes in tax rates, we introduce novel control variables for tax exemptions and bases to disentangle discretionary from automatic tax revenue changes. The marginal changes in the results when controlling for policy actions suggest that, on average, the economic cycle does not necessarily influence tax reforms.
March 17, 2023
Capital Controls in Times of Crisis – Do They Work?
Description: This paper provides an analysis of the use and effects of capital controls in 27 AEs and EMDEs which experienced at least one financial crisis between 1995 and 2017. Countries often turn to using capital controls in crisis: some ease inflow controls while others tighten controls on outflows. A key finding is that countries with pervasive controls before the start of the crisis are shielded compared to countries with more open capital accounts, which see a significant decline in capital flows during crises. In contrast, the effectiveness of capital controls introduced during crises appears to be weak and difficult to identify. There is also some evidence that the introduction of outflow controls during crises is negatively associated with sovereign debt ratings, but that investors may actually forgive with time.
March 17, 2023
Public Debt and Household Inflation Expectations
Description: We use randomized controlled trials in the US, UK, and Brazil to examine the causal effect of public debt on household inflation expectations. We find that people underestimate public debt levels and increase inflation expectations when informed about the correct levels. The extent of the revisions is proportional to the size of the information surprise. Confidence in the central bank considerably reduces the sensitivity of inflation expectations to public debt. We also show that people associate high public debt with stagflationary effects and that the sensitivity of inflation expectations to public debt is considerably higher for women and low-income individuals.
March 17, 2023
Determinants and Social Dividends of Digital Adoption
Description: We identify key drivers of digital adoption, estimate fiscal costs to provide internet subsidies to households, and calculate social dividends from digital adoption. Using cross-country panel regressions and machine learning, we find that digital infrastructure coverage, internet price, and usability are the most statistically robust predictors of internet use in the short run. Based on estimates from a model of demand for internet, we find that demand is most price responsive in low-income developing countries and almost unresponsive in advanced economies. We estimate that moving low-income developing and emerging market economies to the levels of digital adoption in emerging and advanced economies, respectively, will require annual targeted subsidies of 1.8 and 0.05 percent of GDP, respectively. To aid with subsidy targeting, we use microdata from over 150 countries and document a digital divide by gender, socio-economic status, and demographics. Finally, we find substantial aggregate and distributional gains from digital adoption for education quality, time spent doing unpaid work, and labor force participation by gender.
March 17, 2023
Public-Private Wage Differentials and Interactions Across Countries and Time
Description: We compile a novel database on average public and private sector wages and public-private wage differentials, which we use to analyze how average public-private wage differentials vary according to gender and skill level as well as over time. We further examine the dynamic relationship between public and private wage levels and the implications for inflation. On average, public-sector workers earn around 10 percent more relative to comparable private sector workers, with the premium being higher for women, low-skilled workers, and in developing countries. The average public sector wage premium varies counter-cyclically, increasing during economic downturns, and increases prior to elections. Both private sector wages and inflation respond positively to changes in public wages, albeit with significant heterogeneity in the effects across countries reflecting differences in labor market characteristics and prevailing macroeconomic conditions.
March 17, 2023
Fiscal Consolidation: Taking Stock of Success Factors, Impact, and Design
Description: Surges in public debt in many countries since the COVID-19 pandemic have rekindled interest in fiscal consolidations, which often entail difficult policy choices in the face of economic and political constraints. This paper presents findings from a survey of the literature on fiscal consolidations, focusing on the pre-existing conditions, impact and design aspects of past consolidation episodes. These findings provide insight into factors that influence the chance of successful consolidations, their growth and distributional impact, the pace, phasing, duration and policy mix of reforms to mitigate the impact, and the role of fiscal institutions and capacity development in successful consolidations.
March 17, 2023
Measurement and Use of Cash by Half the World’s Population
Description: The use of cash for payments is not well measured. We view the value of cash withdrawn from ATMs, or as a share of all payments, as a more accurate and timely measure of cash use compared to the standard measure of currency in circulation, or as a ratio to GDP. These two measures are compared for 14 advanced and emerging market economies. When aggregated, the trend in cash use for payments is currently falling for half the world’s population. Such a measure can help inform policy decisions regarding CBDC and regulatory decisions concerning access to and use of cash.
March 17, 2023
Derivative Margin Calls: A New Driver of MMF Flows
Description: During the March 2020 market turmoil, euro area money-market funds (MMFs) experienced significant outflows, reaching almost 8% of assets under management. This paper investigates whether the volatility in MMF flows was driven by investors’ liquidity needs related to derivative margin payments. We combine three highly granular unique data sources (EMIR data for derivatives, SHSS data for investor holdings of MMFs and Refinitiv Lipper data for daily MMF flows) to construct a daily fund-level panel dataset spanning from February to April 2020. We estimate the effects of variation margin paid and received by the largest holders of EURdenominated MMFs on flows of these MMFs. The main findings suggest that variation margin payments faced by some investors holding MMFs were an important driver of the flows of EUR-denominated MMFs domiciled in euro area.
March 17, 2023
Monetary Policy Implications of Central Bank Digital Currencies: Perspectives on Jurisdictions with Conventional and Islamic Banking Systems
Description: Central bank digital currencies (CBDCs) promise many benefits but, if not well designed, they could have undesired consequences, including for monetary policy. Issuing an unremunerated CBDC or a wholesale CBDC does not change the objectives of monetary policy or the operational framework for monetary policy. CBDCs can, however, induce changes in the retail, wholesale and cross border payments that have negative spillover effects on monetary policy, through their effects on money velocity, bank deposit disintermediation, volatility of bank reserves, currency substitution, and capital flows. Countries most vulnerable are those with banking systems dominated by small retail deposits and demand deposits, low levels of digital payments and weak macro fundamentals. Proposed CBDC design features, such as caps on CBDC holdings and unremunerating the CBDC can moderate disintermediation risks, but they are not sufficient. Central banks will need to ensure that unintended macroeconomic risks are comprehensively identified and mitigated.
March 17, 2023
Debt Mutualization in the Euro Area: A Quantitative Exploration
Description: This paper explores the feasibility of an idea proposed first by the German Council of Economic Experts in 2011 and revisited by Italian and French authorities in 2021: the one-off mutualization of some European legacy debt through the creation of a European Debt Management Agency (EDMA). The paper does not argue in favor or against these proposals or make a proposal of its own. Rather it outlines a conceptual framework that can be used to quantify the contours of mutualization proposals and draws lessons from the debt assumption in the United States in 1790. The framework suggests that by capitalizing the convenience yield on European-wide safe assets, the EDMA could issue up to 15 percent of euro area GDP, helping to put national debts on a sounder trajectory. The analysis suggests that, without mutualization, some euro area countries are likely to experience decreasing debt-to-GDP ratios over the forecast period. This is not the case for Belgium, Finland, France, Italy, and Spain, where further fiscal consolidation would be needed. For these countries, we consider the effects of a debt mutualization equivalent to 26 percent of their GDP. For Italy, this operation alone is enough to ensure a decreasing debt-to-GDP path. For the others, the news is more mixed: while the additional fiscal consolidation is smaller, 1.3 to 2.3 percent of GDP are still required to reduce debt with 95 percent probability.