2016年-世界发展银行全球_Negative_Interest_Rate_Policies___Sources_and_Implications_66页_2mb

Negative Interest Rate Policies: Sources and Implications

Core Content

This paper explores the sources and implications of negative interest rate policies (NIRP), focusing on their domestic and international effects, particularly in the context of unconventional monetary policy measures. It analyzes the rationale behind NIRP implementation, the monetary transmission channels, the evolution of financial variables, and the financial stability risks and spillover effects on emerging market and developing economies (EMDEs).

Main Points

1. Introduction of NIRP

• Background: Central banks have implemented NIRP to provide additional monetary stimulus due to weak growth, low inflation expectations, and declining real equilibrium interest rates.
• Scope: NIRP has been adopted by several major central banks, including the European Central Bank (ECB), Bank of Japan (BoJ), Swiss National Bank (SNB), Danmarks Nationalbank (DNB), Swedish Riksbank, and Central Bank of Hungary (MNB).
• Impact: NIRP has been used to lower the lower bound of interest rates, support growth, and stabilize inflation expectations.

2. Sources of NIRP

• Main Motivations:
  • Stabilizing inflation expectations and supporting growth (ECB, BoJ, MNB, Riksbank).
  • Responding to currency appreciation and capital inflow pressures (SNB, DNB).
• Complementary Policies: Central banks often accompany NIRP with other measures, such as quantitative easing (QE), forward guidance, and exchange rate interventions, to ease financing conditions and stimulate economic activity.

3. Monetary Transmission Channels

• Conceptual Similarity: NIRP transmission channels are conceptually similar to conventional monetary policy, operating through the interest rate, credit, portfolio, and exchange rate channels.
• Complications:
  • Interest Rate Channel: NIRP can lower short-term and long-term nominal rates, but banks may resist passing on negative rates to depositors and borrowers due to profitability concerns.
  • Credit Channel: NIRP may encourage banks to lend more by taxing liquidity hoarding, but diminished profitability and capital constraints could limit credit growth.
  • Portfolio Channel: Lower short-term rates can increase demand for higher-yielding assets, such as equities, potentially boosting asset prices and wealth effects.
  • Exchange Rate Channel: NIRP can reduce the attractiveness of domestic currency investments, pressuring exchange rates and possibly contributing to currency depreciation.

4. Evolution of Financial Variables

• Interest Rates: NIRP has led to lower nominal and real interest rates, with sovereign bond yields in some countries falling below zero.
• Event Study Findings: Early market reactions to NIRP announcements showed similar effects to conventional monetary easing, but diminishing returns over time suggest reduced effectiveness of later QE programs.
• Excess Reserves: Banks have maintained higher excess reserves due to uncertainty and balance sheet repair, which limits the effectiveness of NIRP in reducing borrowing costs.

5. Financial Stability Risks

• Potential Risks:
  • Erosion of Bank Profitability: Negative rates can reduce net interest income, which may discourage lending.
  • Excessive Risk Taking: Banks may take on more risk to offset losses from negative rates.
  • Yield Curve Compression: NIRP could shift the yield curve downward, potentially distorting financial markets.
• Current Evidence: So far, no significant evidence of compromised financial stability has emerged.

6. Spillovers to EMDEs

• Capital Flows: NIRP in advanced economies can encourage capital flows to EMDEs as investors seek higher yields.
• Challenges:
  • Macroeconomic Fundamentals: Weak fundamentals in EMDEs may limit the benefits of favorable financing conditions.
  • U.S. Dollar Strength: A stronger U.S. dollar could increase balance sheet pressures on EMDEs and heighten policy challenges.
• Policy Responses: Central banks in EMDEs may implement capital controls, exchange rate interventions, or monetary tightening to mitigate spillovers.

Key Information

• NIRP Countries: Currently account for one-fourth of global GDP.
• Negative Rates: Implemented on excess commercial bank reserves, effectively taxing banks for holding cash.
• Effectiveness: While NIRP has shown modest benefits, it may also have manageable costs and risks.
• Challenges: The long-term use of NIRP and below-zero rates could lead to financial instability, though no clear evidence has emerged yet.
• Global Implications: Spillovers from NIRP to EMDEs are similar to other unconventional measures, such as QE.

Conclusion

NIRP has become an important tool in the central bank policy toolkit, particularly in the face of persistently low inflation, weak growth, and diminished returns from conventional measures. However, due to domestic and global implications, these policies require careful handling to maximize benefits while managing risks. The paper underscores the need for further research and prudent policy design to ensure effective and stable monetary outcomes.