Working Papers
2024
April 16, 2024
The Power of Prices: How Fast Do Commodity Markets Adjust to Shocks?
Description: This paper establishes supply and demand elasticities for a broad set of commodities based on a consistent dataset and identification methodology. We apply granular IV methods to a new cross-country panel dataset of commodity production and consumption from 1960-2021. The results indicate that commodity demand and supply are typically price inelastic. Demand and supply tend to be the most inelastic for minerals, whereas they are most elastic for agricultural commodities. The elasticities of energy commodities fall somewhere in between. Supply and demand become more elastic at longer time horizons for mineral and energy commodities, but not for most agricultural commodities.
April 5, 2024
A Primer on Bitcoin Cross-Border Flows: Measurement and Drivers
Description: The rapid growth of crypto assets raises important questions about their cross-border usage. To gain a better understanding of cross-border Bitcoin flows, we use raw data covering both on-chain (on the Bitcoin blockchain) and off-chain (outside the Bitcoin blockchain) transactions globally. We provide a detailed description of available methodologies and datasets, and discuss the crucial assumptions behind the quantification of cross-border flows. We then present novel stylized facts about Bitcoin cross-border flows and study their global and domestic drivers. Bitcoin cross-border flows respond differently than capital flows to traditional drivers of capital flows, and differences appear between on-chain and off-chain Bitcoin cross-border flows. Off-chain cross-border flows seem correlated with incentives to avoid capital flow restrictions.
April 5, 2024
Harnessing Satellite Data to Improve Social Assistance Targeting in the Eastern Caribbean
Description: Prioritizing populations most in need of social assistance is an important policy decision. In the Eastern Caribbean, social assistance targeting is constrained by limited data and the need for rapid support in times of large economic and natural disaster shocks. We leverage recent advances in machine learning and satellite imagery processing to propose an implementable strategy in the face of these constraints. We show that local well-being can be predicted with high accuracy in the Eastern Caribbean region using satellite data and that such predictions can be used to improve targeting by reducing aggregation bias, better allocating resources across areas, and proxying for information difficult to verify.
April 5, 2024
How Vulnerable is Sub-Saharan Africa to Geoeconomic Fragmentation?
Description: This paper studies the potential effects of geoeconomic fragmentation (GEF) in the sub-Saharan Africa region (SSA) through quantifying potential long-term economic costs. The paper considers two alternative GEF scenarios in which trade relations are fully or partially curtailed across world economies. Our quantification relies on a multi-country multi-sector general equilibrium model and takes a deep dive into the impact across SSA’s oil-rich, other resource-rich and non-resource-rich countries. The results are based on a detailed dataset including information for 136 tradable primary commodity and 24 manufacturing and services sectors in 145 countries—32 of which are in SSA. We find that under GEF, SSA could experience long-term wellfare losses of approximately 4 percent of GDP, twice the losses of the rest of the world. This strong effect results from the large losses of other resource-rich and non-resource rich countries in SSA, given their high dependence on commodity trade. However, if the world experiences a less severe GEF-induced trade disruption—a strategic decoupling—SSA countries could derive minor gains from the re-shuffling of global market supply, specially in energy products.
April 5, 2024
Unveiling the Dance of Commodity Prices and the Global Financial Cycle
Description: We examine the impact of commodity price changes on the business cycles and capital flows in emerging markets and developing economies (EMDEs), distinguishing between their role as a source of shock and as a channel of transmission of global shocks. Our findings reveal that surges in export prices, triggered by commodity price shocks, boost domestic GDP, an effect further amplified by the endogenous decline of country spreads. However, the effects on capital flows appear muted. Shifts in U.S. monetary policy and global risk appetite drive the global financial cycle in EMDEs. Eased global credit conditions, attributed to looser U.S. monetary policy or lower global risk appetite, lead to a rise in export prices, higher output, a decrease in government borrowing costs, and stimulate greater capital flows. The endogenous response of export prices amplifies the output effects of a more accommodative U.S. monetary policy while country spreads magnify the impact of shifts in global risk appetite.
April 5, 2024
Can Energy Subsidies Help Slay Inflation?
Description: Many countries have used energy subsidies to cushion the effects of high energy prices on households and firms. After documenting the transmission of oil supply shocks empirically in the United States and the Euro Area, we use a New Keynesian modeling framework to study the conditions under which these policies can curb inflation. We first consider a closed economy model to show that a consumer subsidy may be counterproductive, especially as an inflation-fighting tool, when applied globally or in a segmented market, at least under empirically plausible conditions about wage-setting. We find more scope for energy subsidies to reduce core inflation and stimulate demand if introduced by a small group of countries which collectively do not have much influence on global energy prices. However, the conditions under which consumer energy subsidies reduce inflation are still quite restrictive, and this type of policy may well be counterproductive if the resulting increase in external debt is high enough to trigger sizeable exchange rate depreciation. Such effects are more likely in emerging markets with shallow foreign exchange markets. If the primary goal of using fiscal measures in response to spikes in energy prices is to shield vulnerable households, then targeted transfers are much more efficient as they achieve their goals at lower fiscal cost and transmit less to core inflation.
April 5, 2024
Financial Stability in a Higher-for-Longer Interest Rate Environment The Case of the Middle East and North Africa
Description: This paper assesses the state and resilience of corporate and banking sectors in the Middle East and North Africa (MENA) in a “higher-for-longer” interest rate environment using granular micro data to conduct the first cross-country corporate and banking sector stress tests for the MENA region. The results suggest that corporate sector debt at risk may increase sizably from 12 to 30 percent of total corporate debt. Banking systems would be broadly resilient in an adverse scenario featuring higher interest rates, corporate sector stress, and rising liquidity pressures with Tier-1 capital ratios declining by 2.3 percentage points in the Gulf Cooperation Council (GCC) countries and 4.0 percentage points in non-GCC MENA countries. In the cross-section of banks, there are pockets of vulnerabilities as banks with higher ex-ante vulnerabilities and state-owned banks suffer greater losses. While manageable, the capital losses in the adverse scenario could limit lending and adversely impact growth.
April 5, 2024
This Is Going to Hurt: Weather Anomalies, Supply Chain Pressures and Inflation
Description: As climate change accelerates, the frequency and severity of extreme weather events are expected to worsen and have greater adverse consequences for ecosystems, physical infrastructure, and economic activity across the world. This paper investigates how weather anomalies affect global supply chains and inflation dynamics. Using monthly data for six large and well-diversified economies (China, the Euro area, Japan, Korea, the United Kingdom, and the United States) over the period 1997-2021, we implement a structural vector autoregressive model and document that weather anomalies could disrupt supply chains and subsequently lead to inflationary pressures. Our results—based on high-frequency data and robust to alternative estimation methodologies—show that these effects vary across countries, depending on the severity of weather shocks and vulnerability to supply chain disruptions. The impact of weather shocks on supply chains and inflation dynamics is likely to become more pronounced with accelerating climate change that can have non-linear effects. These findings have important policy implications. Central bankers should consider the impact of weather anomalies on supply chains and inflation dynamics to prevent entrenching second-round effects and de-anchoring of inflation expectations. More directly, however, governments can invest more for climate change adaptation to strengthen critical infrastructure and thereby minimize supply chain disruptions.
April 5, 2024
Designing a Progressive VAT
Description: This paper presents a novel approach to addressing VAT regressivity, by proposing the adoption of a progressive VAT: a single-rate, broad-base, VAT, whereby tax paid on consumption is re-paid to lower income households in real-time, at the moment of purchase. Such a system can effectively eliminate regressivity, while minimizing the political economy, cash-flow, and welfare stigma obstacles that are often associated with standard welfare transfers used in modern VAT systems. It would also have other significant advantages, particularly in terms of compliance incentives.
April 5, 2024
Changing Global Linkages: A New Cold War?
Description: Global linkages are changing amidst elevated geopolitical tensions and a surge in policies directed at increasing supply chain resilience and national security. Using granular bilateral data, this paper provides new evidence of trade and investment fragmentation along geopolitical lines since Russia’s invasion of Ukraine, and compares it to the historical experience of the early years of the Cold War. Gravity model estimates point to significant declines in trade and FDI flows between countries in geopolitically distant blocs since the onset of the war in Ukraine, relative to flows between countries in the same bloc (roughly 12% and 20%, respectively). While the extent of fragmentation is still relatively small and we do not know how longlasting it will be, the decoupling between the rival geopolitical blocs during the Cold War suggests it could worsen considerably should geopolitical tensions persist and trade restrictive policies intensify. Different from the early years of the Cold War, a set of nonaligned ‘connector’ countries are rapidly gaining importance and serving as a bridge between blocs. The emergence of connectors has likely brought resilience to global trade and activity, but does not necessarily increase diversification, strengthen supply chains, or lessen strategic dependence.