Dominant Currency Paradigm
research · Gopinath, G., & Itskhoki, O. (2015). Exchange rate disconnect: a dominant currency paradigm. (2015)
The dominant currency paradigm holds that most international trade is invoiced in a few dominant currencies—primarily the US dollar—so that exchange rate movements have limited immediate effects on trade volumes and prices. Firms set prices in these currencies and are slow to adjust, leading to a disconnect between exchange rates and trade balances.
Core Concepts
The Problem
Standard models predict that a depreciating currency will boost exports and rebalance trade, but empirical evidence showed this effect is weak and slow.
The Claim
The dominant role of the dollar in trade invoicing explains the muted response of trade flows to exchange rate changes, with significant implications for monetary policy and the international transmission of shocks.
Key Evidence
- •Seminal papers by Gopinath and Itskhoki (2015) and subsequent empirical studies show that over 80% of global trade is invoiced in dollars, far exceeding the US share of world trade.
- •Micro-data on firm pricing confirms that firms adjust prices in dollar terms only gradually.
Practical Implication
Countries cannot rely on exchange rate flexibility alone to resolve trade imbalancies; monetary policy transmission is altered, and the case for capital controls or other instruments may strengthen.
Nuance & Limits
The paradigm applies primarily to short- and medium-run dynamics; over very long horizons, quantities may adjust more fully. The dominance of the dollar is not immutable and could shift if other currencies are used more widely for invoicing.
Source Material
Videos
Conversation with Tyler episode where Gopinath discusses the dominant currency paradigm
Citation Density
2000+
Gaps
- ⚠ How will the rise of the euro or renminbi as invoicing currencies affect DCP?
- ⚠ What's the role of dominant currencies in a world of digital currencies?
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