2013年-IMF国际货币组织全球_Brazil_Technical_Note_on_Macroprudential_Policy_Framework_41页_1mb

Brazil: Technical Note on Macroprudential Policy Framework

Introduction

This document, published in January 2013, provides an analysis of Brazil's macroprudential policy framework. It highlights the limitations of traditional microprudential policies, which were exposed during the global financial crisis, and emphasizes the need for a systemic approach to financial stability. Brazil has been an early adopter of macroprudential policies, with the National Monetary Council (CMN) and the Central Bank of Brazil (BCB) playing central roles in monitoring and maintaining financial stability. The note outlines key recommendations to improve the macroprudential framework, including better systemic risk monitoring, enhanced policy implementation, and institutional reforms.

Core Content

Main Recommendations

Systemic Risk Assessment

Cyclical Systemic Risks

• External Vulnerabilities: Brazil, as a major commodity exporter, is exposed to global economic uncertainty and capital flow volatility. The country's financial system has seen increased capital inflows, particularly in the form of portfolio investments, which have reached 10% of GDP in 2009. These inflows can be volatile, leading to sudden stops or reversals that may impact financial institutions and exchange rate stability.
• Equity and Derivatives Markets: These markets are especially vulnerable to sudden changes in sentiment due to the significant presence of foreign investors.
• Commodity Price Fluctuations: The terms of trade and growth are heavily influenced by commodity prices, particularly oil. A global recession or a sharp decline in commodity prices could have a significant impact on financial stability.
• Domestic Risks: Credit-to-GDP ratio has risen from 26% in 2002 to 49% in 2011, indicating a rapid expansion of credit. However, the overall ratio remains relatively low by international standards. The high debt service-to-income ratio (23%) in Brazil suggests that households may be vulnerable in a downturn.
• Real Estate Price Pressures: Housing prices in major metropolitan areas like Rio de Janeiro and São Paulo have grown by about 30% annually, though the pace has moderated since 2011. Despite these increases, the impact on financial stability is limited due to the low proportion of housing loans in the banking sector.

Cross-sectional and Cross-border Systemic Risks

• Domestic Interconnectedness: The financial system is highly interconnected, with mutual funds and banks linked through repo transactions and investments. The BCB has conducted stress tests showing that the failure of a large bank would result in a maximum loss of 0.8% of the system's assets and affect only a small number of financial institutions.
• Indirect Contagion Risk: If more than 20–25% of customer deposits are withdrawn simultaneously, indirect contagion through liquidity channels could have more severe effects.
• Cross-border Risk: Foreign banks account for about 20% of banking assets, and cross-border claims are relatively low, at around 5% and 20% of GDP. Exposure to euro-peripheral countries is minimal, with less than 4% of cross-border claims related to these countries. FX risk is low due to small net exposures and the use of hedging instruments.

Systemic Risk Mitigation Instruments

Capital Flow Management Measure (IOF)

• Tax Rates: IOF tax rates vary depending on the type of financial transaction, with higher rates for short-term transactions.
• Effectiveness: The IOF has been effective in managing capital inflows and reducing volatility, though its unilateral effectiveness is limited. It has a moderate multilateral impact, as it affects not only domestic institutions but also foreign investors.
• Impact on Market Sentiment: Event studies show that the IOF has had a measurable effect on capital flows, reducing the likelihood of sudden stops and reversals.

Reserve Requirements

• Statutory Ratios: Reserve requirements are set by the BCB and are an important tool for managing liquidity and systemic risk.
• Effectiveness: Stress tests indicate that the reserve requirements have helped maintain the resilience of the banking sector. However, there are instances of circumvention, which could undermine their effectiveness.
• Impact on Banks: Banks with higher reserve requirements tend to be more stable, though some may find ways to bypass them.

Restrictions on Consumer Loans

• LTV and DTI Limits: The BCB has considered implementing limits on loan-to-value (LTV) and debt-to-income (DTI) ratios to prevent excessive leverage in the housing sector.
• Effectiveness: These limits could help mitigate risks in the household sector, especially in the event of a cyclical downturn.
• Current Trends: There are indications of financial distress in parts of the household sector, particularly due to high interest rates and short maturities.

Potential Macroprudential Instruments

• Countercyclical Capital Buffers: These could be used to absorb potential losses during periods of credit expansion.
• Macro-financial Linkages Models: Advanced models that assess the relationship between financial and economic conditions could help in early detection of systemic risks.
• Network Analysis: This approach helps in identifying and monitoring interconnectedness within the financial system to assess contagion risks.
• Enhanced Surveillance: The BCB should expand its monitoring to include a broader range of systemic risk indicators and improve the frequency and depth of analysis.

Institutional Architecture

Current Arrangements

• The BCB has a dedicated department, DESIG, responsible for financial system monitoring and systemic risk assessment.
• DESIG includes 226 staff members and is divided into various divisions, including Banking Sector Monitoring, Non-Banking Sector Monitoring, Credit Monitoring, Liquidity and Market Monitoring, and Systemic Risk Monitoring.
• The BCB also collaborates with other regulatory bodies such as the Securities and Exchange Commission (CVM), Superintendence of Private Insurances (SUSEP), and Superintendence of Complementary Pensions (PREVIC).

Strengths and Weaknesses

• Strengths: The BCB has a strong institutional framework with dedicated resources and tools for monitoring financial stability. The use of stress tests and network analysis helps in identifying systemic risks.
• Weaknesses: The current framework lacks a centralized committee for systemic risk monitoring and crisis coordination. There is also a need for more comprehensive and timely reporting of systemic risk assessments.

Key Desirables for Institutional Reform

• Multi-partite Committee: A high-level committee comprising all financial safety net providers should be established with a clear mandate for systemic risk monitoring and crisis coordination.
• Enhanced Accountability: The committee should publish periodic systemic risk assessments and update Congresso Nacional do Brasil regularly.
• Coherent Policy Implementation: The committee should ensure that macroprudential policies are implemented consistently across the banking and non-banking sectors to close regulatory gaps.
• Improved Data Collection and Analysis: The BCB should enhance its data collection processes and develop more sophisticated models to assess macro-financial linkages and systemic risk.

Conclusion

The document outlines a comprehensive assessment of Brazil's macroprudential policy framework, highlighting the need for improved systemic risk monitoring, better policy implementation, and institutional reforms. It provides a detailed list of recommendations aimed at enhancing the resilience of the financial system and mitigating both cyclical and cross-sectional risks. The BCB has made significant progress in developing its macroprudential tools, but further improvements are necessary to ensure the framework is fully functional and effective.