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Summary of Fiscal Policies for a Low-Carbon Economy

Core Content

This report explores the role of fiscal policies in supporting the transition to a low-carbon economy, with a focus on carbon taxation and green bonds. It highlights the importance of combining these two instruments to achieve environmental sustainability, economic resilience, and intergenerational equity.

The report addresses the economic and financial challenges posed by climate change, including stranded assets, volatility in asset and commodity prices, and the impact of oil price fluctuations on financial markets and fiscal policy. It argues that traditional fiscal tools, such as carbon taxation, are insufficient on their own to meet the scale of investment needed for climate action, and that green bonds can complement them by providing additional financing and long-term incentives.

Main Views

• Climate change is a major threat to economic stability and growth, particularly for developing countries. It can lead to poverty traps, financial instability, and fiscal constraints.
• Carbon taxation is a key fiscal instrument that can internalize negative externalities from carbon-intensive activities and provide co-benefits such as improved public health and reduced inequality.
• Green bonds serve as bridge financing and can help smooth the transition to a low-carbon economy by providing long-term capital and reducing financial market risks.
• The combination of carbon taxes and green bonds enhances policy effectiveness, supports renewable energy development, and increases overall welfare.
• Financial markets play a critical role in green investment and climate policy implementation, but they often exhibit short-termism and myopic behavior, which can hinder green investment.
• The report advocates for green fiscal recovery strategies, especially in the context of the post-COVID-19 economic recovery, emphasizing the need for debt restructuring, debt forgiveness, and new financial instruments such as green convertible bonds.

Key Information

1. Climate and Economic Risks

• Climate change and related disasters can cause economic and social destruction, long-term poverty traps, and fiscal challenges.
• Oil price volatility is a major concern for financial markets, and it is closely linked to macroeconomic regimes and sovereign risk.
• Stranded assets—assets that lose value due to environmental regulations or market shifts—pose a significant risk to carbon-intensive sectors.

2. Carbon Taxation

• A Pigouvian carbon tax addresses negative externalities of carbon-intensive activities and has positive co-benefits.
• It can facilitate structural economic changes toward low-carbon growth, but alone is not sufficient to meet the scale of investment needed.
• Carbon taxes are more effective when combined with green bonds to provide additional resources and incentives for low-carbon transition.

3. Green Bonds

• Green bonds are financial instruments designed to fund climate-friendly projects.
• They can reduce capital costs, lower volatility, and improve risk-return profiles.
• The report suggests that green bonds can be used to de-risk portfolios and support green recovery efforts.
• However, the green bond market is still small and illiquid, making market analysis and policy design challenging.

4. Macroeconomic Models

• The report discusses four types of macroeconomic climate models:
  • Type 1: NORDHAUS DICE (2008)
  • Type 2: Extended IAMs
  • Type 3: Macroeconomic policy augmented models
  • Type 4: Synthesis models with regime changes
• These models are used to assess the impact of climate policies on economic growth, investment, and fiscal space.

5. Policy Recommendations

• Governments should combine carbon taxation and green bonds to support low-carbon transitions and avoid short-termism.
• Fiscal policy must be aligned with climate goals, and green fiscal recovery is essential for post-pandemic economic rebuilding.
• Private investment in green bonds can be encouraged through tax incentives and market reforms.
• Debt restructuring and financial innovation (e.g., climate-to-debt swaps) are important for countries with limited fiscal space.

Conclusion

The report emphasizes that fiscal policies—particularly carbon taxation and green bonds—are crucial for a low-carbon transition. They can help mitigate climate risks, reduce financial instability, and support sustainable growth. The combination of these instruments is especially beneficial for financial markets, investors, and governments in achieving long-term resilience and economic recovery.

The need for green fiscal policies is clear, and further empirical research is required to better understand market dynamics, investment behavior, and policy effectiveness. As the green bond market evolves, policy makers must adapt to ensure sustainable and inclusive recovery from both climate change and economic crises.