2011年-IMF国际货币组织全球_A_Theory_of_Domestic_and_International_Trade_Finance_36页_1012kb

Summary of "A Theory of Domestic and International Trade Finance"

Core Content

This paper presents a theoretical model to explain the "great trade collapse" that occurred during the 2008-2009 financial crisis. It argues that trade finance plays a crucial role in the collapse by introducing asymmetry in the risk assessment process between domestic and international transactions.

Main Viewpoints

• Trade Finance as a Critical Factor: Trade finance is essential for business transactions, as over 90% of transactions involve some form of credit, insurance, or guarantee. It is particularly vital during economic downturns when financing becomes more difficult.

• Asymmetric Risk Assessment: During crises, the risk of international transactions increases relative to domestic ones. Banks are more knowledgeable about domestic firms due to higher transaction volumes, leading to more precise screening and lower default risk.

• Trade Finance Premium: The model shows that banks charge higher financing costs for international transactions due to less precise screening. This creates a trade finance premium, which is counter-cyclical—rising more sharply during downturns than during booms.

• Letter of Credit (L/C) as a Solution: The use of letters of credit in international transactions shifts the non-payment risk from the buyer to their bank, allowing for better risk mitigation. However, it also introduces inter-bank informational friction, which can increase financing costs during a crisis.

• Impact on Trade Volume: The combination of higher financing costs and increased risk during crises leads to a sharper decline in international trade compared to domestic trade, as the price channel amplifies the effect of financing constraints.

Key Information

1. Model Overview

• The model is based on a single intermediate goods producer supplying to both domestic and foreign buyers.
• Domestic transactions (D) are free of trade costs (τₐ = 1), while international transactions (F) face variable trade costs (τₐ > 1).
• Banks provide transaction-specific financing with interest rates determined by their screening precision and the risk of default.

2. Screening Mechanism

• Banks screen borrowers and their trading partners to assess creditworthiness.
• Precision levels of screening tests (α) are determined by the amount of information banks acquire, which is costly.
• Banks use higher precision screening for domestic firms and lower precision for foreign firms due to the lower volume of international transactions.

3. Trade Finance Premium

• The trade finance premium arises from the higher risk of international transactions.
• The premium is counter-cyclical, meaning it rises more during a recession than during a boom.
• This is because less precise screening for foreign firms makes them more sensitive to changes in default risk during economic downturns.

4. Letter of Credit (L/C) System

• L/Cs are used exclusively in international transactions.
• They shift non-payment risk from the buyer to their bank, improving the loan repayment probability.
• However, they also introduce inter-bank informational friction, which can increase the cost of financing during a crisis.

5. Empirical Evidence and Theoretical Contributions

• Empirical studies show that during the financial crisis, the price of international trade finance increased significantly, and trade volumes declined more sharply than domestic ones.
• The paper contributes to the literature by:
  • Endogenizing the relative riskiness of international transactions.
  • Deriving macroeconomic implications based on the cyclical properties of trade finance.
  • Introducing a novel explanation for the use of L/Cs in international trade.

6. Related Literature

• The paper builds on existing literature on trade credit, credit constraints, and payment systems.
• It is closely related to studies that examine the optimal payment system in international trade, such as those by Schmidt-Eisenlohr (2009), Olsen (2010), and Antràs and Foley (2011).
• It also connects to the literature on financial development and comparative advantage, showing that financial development can influence trade patterns.

Structure of the Paper

• I. Introduction: Introduces the "great trade collapse" and the role of trade finance in explaining it.
• II. Baseline Model: Sets up the model with a single intermediate goods producer and two types of firms (good and bad).
• III. Trade Finance Premium: Analyzes the counter-cyclical nature of the trade finance premium.
• IV. Extension: Letter of Credit (L/C): Examines the role of L/Cs in international trade and their impact on financing costs.
• V. Conclusion: Summarizes the main findings and implications of the model.

Figures

• Figure 1: Illustrates screening tests for domestic and international transactions under the open account system.
• Figure 2: Summarizes the properties of screening tests, including their concavity and sensitivity to default rates.

References

• The paper cites several key studies, including:
  • Baldwin (2009) on the magnitude of the trade collapse.
  • Levchenko et al. (2010) on the relationship between trade and GDP.
  • Haddad, Harrison, and Hausman (2010) on import price trends.
  • Amiti and Weinstein (2011) on the effect of bank health on exports.
  • Chor and Manova (forthcoming) on the role of trade finance in the global recession.

Conclusion

The paper concludes that the asymmetric screening process in trade finance, combined with the use of letters of credit, leads to a greater decline in international trade during financial crises. This mechanism provides a theoretical foundation for understanding the observed empirical patterns and highlights the importance of financial factors in shaping trade outcomes.