Commodity Shocks And Exchange Rate Regimes Implications For The Caribbean Commodity Exporters

Declining commodity prices during mid-2014-2016 posed significant challenges to commodity-exporting economies. The severe terms of trade shock associated with a sharp fall in world commodity prices have raised anew questions about the viability of pegged exchange rate regimes. More recently, the COVID-19 pandemic and the measures needed to contain its spread have been associated with a significant disruption in several economic sectors, in particular, travel, tourism, and hospitality industry, adding to the downward pressure on commodity prices, a sharp fall in foreign exchange earnings, and depressed economic activity in most commodity exporters. This paper reviews country experiences with different exchange rate regimes in coping with commodity price shocks and explores the role of flexible exchange rates as a shock absorber, analyzing the macroeconomic impact of adverse term-of-trade shocks under different regimes using event study and panel vector autoregression techniques. It also analyzes, conceptually and empirically, policy and technical considerations in making exchange rate regime choices and discusses the supporting policies that should accompany a given regime choice to make that choice sustainable. It offers lessons that could be helpful to the Caribbean commodity-exporters.

The experience of developing countries over 1990-2010 indicates that commodity prices have a significant impact on fiscal outcomes. Both revenue and expenditure rise in response to commodity (import or export) price increases; the response of the fiscal deficit is ambiguous. A floating exchange rate regime only partially offsets the impact; foreign-exchange reserves do not dampen the effects. Hence, there is a strong case for fiscal hedging against commodity price shocks. Hedging instruments based on a limited set of benchmark world prices for a narrow set of commodities may suffice to realize most of the potential benefits.

Commodity-exporting countries have significantly benefited from the commodity price boom of recent years. At the current juncture, however, uncertain global economic prospects have raised questions about their vulnerability to a sharp fall in commodity prices and the policies that can shield it from such a shock. To address these questions, this paper takes a long term (4 decade) view at emerging markets' commodity dependence, the history of commodity price busts and the role of policies in mitigating or amplifying their economic impact. The paper highlights the stark difference in trends between Latin America - one of the most vulnerable regions given its high, and rising, commodity dependence - and emerging Asia - which has evolved from being a net exporter to a net importer of commodities in the last 40 years. We find evidence, however, that while commodity dependence is an important ingredient, a country's ultimate degree of vulnerability to commodity price shocks is to a great extent determined by the flexibility and quality of its policy framework. Policies in the run-up of sharp terms-of-trade drops - especially when those are preceded by booms - play a particularly important role. Limited exchange rate flexibility, a weak external position, and loose fiscal policy tend to amplify the negative effects of these shocks on domestic output. Financial dollarization also appears to act as a shock "amplifier."

This paper examines the persistence of shocks to world commodity prices, using monthly IMF data on primary commodities between 1957–98. We find that shocks to commodity prices are typically long–lasting and the variability of the persistence of price shocks is quite wide. The paper also discusses the implications of these findings for national and international schemes to stabilize earnings from commodity exports and finds that if price shocks are long–lived, then the cost of stabilization schemes will likely exceed any associated smoothing benefits.

This paper investigates the impact of commodity price shocks on financial sector fragility. Using a large sample of 71 commodity exporters among emerging and developing economies, it shows that negative shocks to commodity prices tend to weaken the financial sector, with larger shocks having more pronounced impacts. More specifically, negative commodity price shocks are associated with higher non-performing loans, bank costs and banking crises, while they reduce bank profits, liquidity, and provisions to nonperforming loans. These adverse effects tend to occur in countries with poor quality of governance, weak fiscal space, as well as those that do not have a sovereign wealth fund, do not implement macro-prudential policies and do not have a diversified export base. These findings are robust to a battery of robustness checks.

After skyrocketing over the past decade, commodity prices have remained stable or eased somewhat since mid-2011—and most projections suggest they are not likely to resume the upward trend observed in the last decade. This paper analyzes what this turn in the commodity price cycle may imply for output growth in Latin America and the Caribbean. The analysis suggests that growth in the years ahead for the average commodity exporter in the region could be significantly lower than during the commodity boom, even if commodity prices were to remain stable at their current still-high levels. Slower-than-expected growth in China represents a key downside risk. The results caution against trying to offset the current economic slowdown with demand-side stimulus and underscore the need for ambitious structural reforms to secure strong growth over the medium term.

The recent boom and bust in commodity prices has raised concerns about the impact of volatile commodity prices on Latin American countries’ fiscal positions. Using a novel quarterly data set-which includes unique country-specific commodity price indices and a comprehensive measure of public expenditures-this paper analyzes the dynamic effects of commodity price fluctuations on fiscal revenues and expenditures for eight commodity-exporting Latin American countries. The results indicate that Latin American countries’ fiscal positions react strongly to shocks to commodity prices, yet there are marked differences across countries. Fiscal variables in Venezuela display the highest sensitivity to commodity price shocks, with expenditures reacting significantly more than revenues. At the other end of the spectrum, in Chile expenditure reacts very little to commodity price fluctuations, and the dynamic responses of its fiscal indicators are very similar to those seen in high-income commodity-exporting countries. This distinct behavior across countries may relate to institutional arrangements, which in some cases include the efficient application of fiscal rules amid political commitment and high standards of transparency.

In this paper, we analyze how lack of credibility and transparency of monetary and fiscal policies undermines the effectiveness of macroeconomic policies to isolate the economy from commodity price fluctuations. We develop a general equilibrium model for a commodity-exporting economy where macro policies are conducted through rules. We show that the responses of output, aggregate demand, and inflation to an increase in commodity price are magnified when these rules are imperfectly credible and lack transparency. If policies are imperfectly credible, then transparency helps private agents to learn the systematic behavior of the autorities, reducing the effects of commodity prices shocks. Coherent with the model, we show cross-country evidence that monetary policy transparency and fiscal credibility reduce the incidence of export price volatility on output volatility. Also, our results indicate that having an explicit fiscal rule and an inflation targeting regime contribute to isolate the economy from terms of trade fluctuations.

Many emerging economies depend on commodities whose prices are volatile. High prices for these commodities naturally help those sectors related to the production of the commodities, but the economic benefits for other sectors are ambiguous. These effects can be different according to the characteristics of the sector, leading to a positive or negative sectoral effect depending on several features. Also, commodity price shocks may affect spending differently according to the characteristics of the population. A feature prevalent in many emerging economies is a low degree of banking penetration, which can affect the magnitude of commodity shocks, because banking services are related to how people save and borrow, affecting their ability to smooth spending when they face income shocks. This dissertation studies the effects of commodity price shocks in exporting economies, analyzing the overall and sectoral effects, as well as the regional effects according to access to banking services among inhabitants. The first chapter analyzes the effect of commodity price fluctuations on both overall and sectoral outcomes in a commodity-exporting economy. Using Chilean and international copper market data, I find positive copper price changes stemming from copper-specific demand shocks generate a broad GDP expansion with no visible decline in the exports of any sector, including manufacturing. These results provide evidence against the Dutch disease hypothesis involving the crowding out effect of commodity price increases on the manufacturing sector. The second chapter studies how features of a commodity-exporting economy such as the degree of substitution between domestic and foreign goods, the income effect on labor supply, and trade policy related to tariffs on imports shape overall and sectoral effects of commodity price shocks. For that, I estimate key structural parameters of a small open economy business-cycle model with 6 sectors by matching my empirical impulse responses and find that a low degree of substitution between domestic and foreign goods explains the positive sectoral effect of a commodity price shock. Then, I evaluate how tariffs on imports shape the effect of commodity price shocks and find low tariffs make the small open economy less sensitive to commodity price shocks when the elasticity of substitution between domestic goods and imports is small. The third chapter studies the relationship between access to banking services and the magnitude of external shocks. Using quarterly data of the number of checking and savings bank accounts per person as an indicator of access to banking services, I analyze the effects of commodity price changes conditional on the number of bank accounts per person across Mexican states. I find decreases in commodity prices generate a bigger contraction in total production in states with low numbers of bank accounts per person. A rise in commodity prices generates a bigger expansion of the number of formal workers as well as a wider contraction in the number of informal workers in regions with a low number of bank accounts per person

Fluctuations in commodity prices are an important driver of business cycles in small emerging market economies (EMEs). We document how these fluctuations correlate strongly with the business cycle in EMEs. We then embed a commodity sector into a multi-country EMEs’ business cycle model where exogenous fluctuations in commodity prices follow a common dynamic factor structure and coexist with other driving forces. The estimated model assigns to commodity shocks 42 percent of the variance in income, of which a considerable part is linked to the common factor. A further amplification mechanism is a ”spillover” effect from commodity prices to risk premia.