Exchange rates

Marcel Fratzscher, Lukas Menkhoff, Lucio Sarno, Tobias Stöhr, 23 February 2018

Central bank interventions in foreign exchange markets have long been viewed with scepticism by academics. This column examines foreign exchange interventions for a sample of 33 advanced and developing economies. Interventions occur frequently, in episodes that can last several days, and are often successful in smoothing exchange rates. These results show that central bankers, particularly in emerging markets, appreciate the efficacy of interventions.

Emine Boz, Gita Gopinath, Mikkel Plagborg-Moller, 11 February 2018

In international macroeconomics, it is typically assumed that the exchange rate between two trading partners matters most for trade prices, quantities, and terms of trade. This column presents evidence supporting an alternate view – that a country’s exchange rate relative to the US dollar is most important. This is because invoicing in dollars is common, even when the US is not part of a transaction. The findings have important implications for the conduct of monetary and exchange rate policies.

Filippo di Mauro, Vlad Demian, Jan-Paul van de Kerke, 08 December 2017

It is well-established in theoretical and empirical models that an exchange rate movement affects exports, but we are far from a consensus on the size and relevance of this effect. Macro-based analyses tend to yield very low values for the elasticity of exports to the exchange rate, while micro- or sectoral-based estimations tends to be higher. This column shows that one reason for the disagreement is that macro estimations fail to incorporate the characteristics of the underlying distribution of firm productivity and its asymmetries. Doing so generates higher elasticity estimates than the macro estimations, and greater country-level diversification.

Giancarlo Corsetti, Gernot Müller, Keith Kuester, 16 September 2017

The classic rationale for flexible exchange rates was that policymakers would be unconstrained by currency targets. The Great Recession, however, saw numerous central banks constrained instead by the zero lower bound. This column considers which exchange rate regime is best for small open economies in a global recession. The model suggests that if the source of the shock is abroad and foreign interest rates become constrained at their zero lower bound, then flexible exchange rates do provide a great deal of insulation to the domestic economy.

Cécile Couharde, Anne-Laure Delatte, Carl Grekou, Valérie Mignon, Florian Morvillier, 02 September 2017

Academics have traditionally computed their own measure for assessing whether a currency is over- or undervalued, while policymakers rely on scarce public information with inconsistent data. This column introduces a new database, EQCHANGE, which includes nominal and real effective exchange rates, as well as equilibrium real effective exchange rates for more than 180 countries from 1973 onwards. It represents the longest and largest publicly available database on equilibrium exchange rates and corresponding misalignments.

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