Working Papers
2024
March 22, 2024
Smooth Forecast Reconciliation
Description: How to make forecasts that (1) satisfy constraints, like accounting identities, and (2) are smooth over time? Solving this common forecasting problem manually is resource-intensive, but the existing literature provides little guidance on how to achieve both objectives. This paper proposes a new method to smooth mixed-frequency multivariate time series subject to constraints by integrating the minimum-trace reconciliation and Hodrick-Prescott filter. With linear constraints, the method has a closed-form solution, convenient for a high-dimensional environment. Three examples show that the proposed method can reproduce the smoothness of professional forecasts subject to various constraints and slightly improve forecast performance.
March 22, 2024
The Economic Impacts and the Regulation of AI: A Review of the Academic Literature and Policy Actions
Description: We review the literature on the effects of Artificial Intelligence (AI) adoption and the ongoing regulatory efforts concerning this technology. Economic research encompasses growth, employment, productivity, and income inequality effects, while regulation covers market competition, data privacy, copyright, national security, ethics concerns, and financial stability. We find that: (i) theoretical research agrees that AI will affect most occupations and transform growth, but empirical findings are inconclusive on employment and productivity effects; (ii) regulation has focused primarily on topics not explored by the academic literature; (iii) across countries, regulations differ widely in scope and approaches and face difficult trade-offs.
March 22, 2024
Deciphering the GloBE in a Low-Tax Jurisdiction
Description: Pillar Two rules of the Inclusive Framework agreement on a minimum corporate tax (known as ‘Global Anti-Base Erosion Rules’, for short GloBE) have important implications for the design of the corporate income tax. This chapter discusses these implications particularly from the perspective of low-tax jurisdictions. It argues that it is not possible to design a system that always guarantees generating exactly the bare minimum tax intended by the rules and motivates that this should not be the policy objective anyway. Importantly, if no profit tax already exists, countries need to consider whether to adopt one, and if yes, in what form. There is a case for introducing a general profit tax beyond the GloBE rules, together with a qualifying GloBE domestic minimum top-up tax as a backstop. The familiar alternatives of efficient economic rent tax designs, however, are no longer equivalent under the GloBE. In practice, given the specifics of the rules, an efficient rent tax on in-scope multinationals cannot be combined with a statutory tax rate below a certain cutoff, because the minimum tax becomes always binding. Under the GloBE, immediate expensing particularly maintains the time-value of fully deducting the cost of investment, without impacting the GloBE effective tax rate.
March 15, 2024
High Inflation in the Baltics: Disentangling Inflation Dynamics and Its Impact on Competitiveness
Description: This paper identifies and quantifies the drivers of inflation dynamics in the three Baltic economies and assesses the effectiveness of fiscal policy in fighting inflation. It also analyzes the macroeconomic impact of inflation on competitiveness by focusing on the relationship between wages and productivity in the tradeable sector. The results reveal that inflation in the Baltics is largely driven by global factors, but domestic demand matters as well, suggesting that fiscal policy can play a role in containing inflation. Also, there is robust evidence of a long-run (cointegration) relationship between (real) wages in the tradeable (manufacturing) sector and productivity in the Baltics with short-term deviations self-correcting in Estonia and Lithuania only.
March 15, 2024
Can Fiscal Consolidation Announcements Help Anchor Inflation Expectations?
Description: In this paper, we use quarterly data and a novel database on fiscal policy consolidation announcements, for a sample of advanced economies and emerging markets to quantify the effects of fiscal tightening on inflation expectations. We find that fiscal consolidation announcements reduce inflation expectations over the medium-term (three and five-years ahead), but not in the short-term (one-year ahead). There is also some evidence that consolidation announcements reduce “disagreement” about expected future inflation at longer horizons. The inflation anchoring role of consolidation announcements is enhanced by the strength of a country’s fiscal and monetary frameworks, and when fiscal and monetary policy work in tandem. In addition, we find that initial conditions matter—inflation expectation’s response to consolidation announcements is larger in periods of high contemporaneous inflation. With these results in hand, we show that the effectiveness of fiscal consolidation in controlling realized inflation depends greatly on the response of inflation expectations to consolidation announcements. These results show that fiscal policy is crucial to anchor inflation expectations and a key element of a credible disinflationary process.
March 15, 2024
Effect of Exchange Rate Movements on Inflation in Sub-Saharan Africa
Description: This paper provides new evidence on the exchange rate passthrough to domestic inflation in Sub-Saharan Africa (SSA) using both bilateral US dollar exchange rate and the nominal effective exchange rate (NEER), and monthly data. We find that depreciations cause sizable increases in domestic inflation. The passthrough in SSA is higher than in other regions and its magnitude depends on the exchange rate regime, type of exchange rate (bilateral versus NEER), natural resource endowment and domestic market competitiveness. The passthrough is found to be disproportionately larger and more persistent for large depreciation shocks, and for exchange rate changes that are more persistent. We also find evidence of asymmetry, with passthrough eight times stronger during depreciations than appreciations. Additional findings suggest that improved monetary policy effectiveness is an important driver of our observed declining estimates of exchange rate passthrough over time, supporting the long-standing view that strengthening monetary policy frameworks and credibility helps mitigate the impact of depreciations on inflation.
March 15, 2024
Climate Variability and Worldwide Migration: Empirical Evidence and Projections
Description: We estimate a bilateral gravity equation for emigration rates controlling for decadal weather averages of temperature, precipitation, droughts, and extreme precipitation in origin countries. Using the parameter estimates of the gravity equation, we estimate global, regional, and country-by-country emigration flows using different population and climate scenarios. Global emigration flows are projected to increase between 73 and 91 million in 2030-2039; between 83 and 102 million in 2040-2049; between 88 and 121 in 2050-59, and between 87 and 133 million in 2060-2069. Changes in emigration flows are mainly due to population growth in the origin countries.
March 15, 2024
Efficient Economic Rent Taxation under a Global Minimum Corporate Tax
Description: The international agreement on a corporate minimum tax is a milestone in global corporate tax arrangements. The minimum tax disturbs the equivalence between otherwise equivalent forms of efficient economic rent taxation: cash-flow tax and allowance for corporate equity. The marginal effective tax rate initially declines as the statutory tax rate rises, reaching zero where the minimum tax is inapplicable, and increases thereafter. This kink occurs at a lower statutory rate under cash-flow taxation. We relax the assumption of full loss offset; provide a routine for computing effective rates under different designs; and discuss policy implications of the minimum tax.
March 15, 2024
The ECB’s Future Monetary Policy Operational Framework: Corridor or Floor?
Description: This paper reviews the trade-offs involved in the choice of the ECB’s monetary policy operational framework. As long as the ECB’s supply of reserves remains well in excess of the banks’ demand, the ECB will likely continue to employ a floor system for implementing the target interest rate in money markets. Once the supply of reserves declines and approaches the steep part of the reserves demand function, the ECB will face a choice between a corridor system and some variant of a floor system. There are distinct pros and cons associated with each option. A corridor would be consistent with a smaller ECB balance sheet size, encourage banks to manage their liquidity buffers more tightly, and facilitate greater activity in the interbank market. But it would require relatively more frequent market operations to ensure the money markets rate stays close to the policy rate and could leave the banking system vulnerable to intermittent liquidity shortages that may have financial stability implications and impair monetary transmission. The floor, on the other hand, would allow for more precise control of the overnight rate and a lower risk of liquidity shortages, but it would entail a somewhat larger ECB balance sheet, weaken the incentives for banks to manage their liquidity buffers, and discourage interbank market activity. The analysis of tradeoffs suggests that, on balance, in steady state, a hybrid system that combines the features of the “parsimonious floor” (with a minimal volume of reserves) with a lending facility or frequent short-term full-allotment lending operations priced at or very close to the deposit rate, making it a “zero (or near-zero) corridor”, would be most conducive for achieving the ECB’s monetary policy objective.
March 8, 2024
Monetary Policy with Uncertain Inflation Persistence
Description: When uncertain about inflation persistence, central banks are well-advised to adopt a robust strategy when setting interest rates. This robust approach, characterized by a "better safe than sorry" philosophy, entails incurring a modest cost to safeguard against a protracted period of deviating inflation. Applied to the post-pandemic period of exceptional uncertainty and elevated inflation, this strategy would have called for a tightening bias. Specifically, a high level of uncertainty surrounding wage, profit, and price dynamics requires a more front-loaded increase in interest rates compared to a baseline scenario which the policymaker fully understands how shocks to those variables are transmitted to inflation and output. This paper provides empirical evidence of such uncertainty and estimates a New Keynesian Dynamic Stochastic General Equilibrium (DSGE) model for the euro area to derive a robust interest rate path for the ECB which serves to illustrate the case for insuring against inflation turning out to have greater persistence.