1:13:55
Keynote - Hahn Lecture, Gita Gopinath: Dominant Currency Paradigm
RoyalEconomicSociety
Overview
This lecture introduces the Dominant Currency Paradigm (DCP) as a more accurate framework for understanding international macroeconomics than traditional models. It challenges the assumptions of Producer Currency Pricing (PCP) and Local Currency Pricing (LCP) by presenting empirical evidence on how prices are set in international trade. The DCP posits that a few dominant currencies, primarily the US dollar, are used for invoicing and pricing in a vast majority of global trade, even when the US is not directly involved in the transaction. This has significant implications for how exchange rate fluctuations affect trade volumes, inflation, and the effectiveness of monetary policy, suggesting that a stronger dollar can lead to a reduction in global trade.
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Chapters
- Traditional Keynesian open economy macro models assume price stickiness, but differ on the currency in which prices are rigid.
- The Producer Currency Pricing (PCP) model assumes prices are sticky in the currency of the producer (e.g., US prices sticky in dollars, Japanese prices sticky in yen).
- The Local Currency Pricing (LCP) model assumes prices are sticky in the currency of the buyer (e.g., US prices to Japan sticky in yen, Japanese prices to US sticky in dollars).
- These two paradigms lead to opposite predictions about how exchange rate movements affect terms of trade and trade balances.
Understanding these foundational models is crucial because they form the basis of much economic policy discussion and analysis regarding exchange rates and international trade.
In PCP, a US export price set in dollars remains fixed, making it cheaper for foreign buyers if the dollar depreciates. In LCP, a US export price to Japan, set in yen, would become more expensive for Japanese buyers if the yen depreciates against the dollar.
- Empirical data shows that the US dollar is used for invoicing in international trade far more than its share of global trade would suggest.
- The dollar's invoicing share is disproportionately high for many countries, even when trading with non-US partners.
- While the Euro is also used, its invoicing share is largely confined to trade involving Eurozone countries.
- The assumption that countries price exports in their own currency (PCP) is largely contradicted by the data.
This evidence challenges the core assumptions of existing models and highlights the need for a framework that accounts for the widespread use of a dominant currency.
Japan, despite only 22% of its exports going to the US, invoices about 50% of its exports in US dollars.
- Research on US import and export prices reveals significant price stickiness, typically lasting 10-12 months.
- Even when prices change, they are not fully responsive to exchange rate fluctuations, especially for goods invoiced in dollars.
- Goods priced in dollars show very low immediate exchange rate pass-through, while goods priced in foreign currencies show higher immediate pass-through.
- This suggests that the invoicing currency choice significantly impacts how exchange rate changes affect import prices.
Understanding how exchange rates translate into actual prices is key to analyzing inflation and the real effects of monetary policy.
When the US dollar depreciates, import prices invoiced in dollars change much less than import prices invoiced in other foreign currencies, leading to lower overall price pass-through into the US economy.
- The DCP model incorporates pricing in a dominant currency (often the dollar), strategic complementarities in pricing, and the use of imported inputs.
- It moves beyond a two-country framework to include a dominant currency region, a home country, and the rest of the world.
- This framework aims to better match empirical observations of international pricing behavior.
- The model allows for endogenous choice of invoicing currency and explains why prices might remain sticky in the dominant currency even when the exchange rate changes.
This new modeling approach provides a more realistic representation of global trade dynamics, moving beyond the simplifying assumptions of older paradigms.
A firm selling to multiple countries might choose to invoice in dollars to maintain price stability relative to competitors and manage costs of imported inputs, even if its direct trade with the US is limited.
- In the DCP, expansionary monetary policy in a small open economy leads to depreciation but has a muted impact on exports due to dollar-denominated pricing.
- This results in a significant increase in inflation and a decrease in imports, leading to an overall decline in trade volume.
- Unlike traditional models, a stronger dollar can lead to a reduction in global trade because many countries' import and export prices are dollar-linked.
- Optimal monetary policy in the DCP framework should consider stabilizing inflation, the output gap, and the exchange rate relative to the dominant currency.
These findings suggest that the global economic landscape and the effectiveness of policy tools are significantly shaped by the dominance of certain currencies in international transactions.
An expansionary monetary policy in Colombia (a small open economy) leads to peso depreciation, causing inflation and a drop in imports, but not a significant boost in exports, ultimately reducing overall trade.
Key takeaways
- The US dollar plays a disproportionately large role in invoicing and pricing international trade, even for transactions not involving the US.
- Traditional models assuming Producer Currency Pricing (PCP) or Local Currency Pricing (LCP) fail to capture this reality.
- Price stickiness in the dominant currency means exchange rate pass-through is slow and uneven, impacting inflation and trade differently than predicted by older models.
- A stronger dollar can lead to a contraction in global trade because it makes imports more expensive for many countries and does not sufficiently boost their exports.
- Monetary policy effectiveness in small open economies is altered by the Dominant Currency Paradigm, with a greater focus needed on the exchange rate relative to the dominant currency.
- The choice of invoicing currency is not arbitrary but influenced by strategic considerations and the use of imported inputs, leading to stable pricing patterns.
Key terms
Dominant Currency Paradigm (DCP)Producer Currency Pricing (PCP)Local Currency Pricing (LCP)Exchange Rate Pass-ThroughPrice StickinessInvoicing CurrencyTerms of TradeStrategic ComplementaritiesImported InputsSmall Open Economy
Test your understanding
- How does the Dominant Currency Paradigm (DCP) differ from the Producer Currency Pricing (PCP) and Local Currency Pricing (LCP) models in its assumptions about international pricing?
- What empirical evidence supports the claim that the US dollar is a dominant currency in international trade invoicing?
- Explain how price stickiness in the dominant currency affects exchange rate pass-through and inflation in importing countries.
- What are the implications of the DCP for the relationship between a stronger US dollar and global trade volumes?
- How does the DCP alter the optimal monetary policy strategy for a small open economy compared to traditional models?