20240307-IMF-Understanding_Inflation_Dynamics_The_Role_of_Global_Shocks_in_CEMAC_39页_1mb

Understanding Inflation Dynamics: The Role of Global Shocks in CEMAC

Introduction
Inflation in the CEMAC region surged faster and persisted longer during 2021–2023 than expected. Global price shocks—particularly food and oil prices and supply chain disruptions—played a significant role in this persistence. The study examines how these external factors affect inflation dynamics and provide policy implications.

Key Findings

1. Global Shocks' Impact:

   • Global commodity food price fluctuations, oil prices, and shipping costs are the primary drivers of headline inflation variability in CEMAC.
   • Food price shocks have a larger and more persistent pass-through effect due to their high volatility and substantial share in consumption baskets, potentially triggering second-round effects on wages and prices.

2. Inflation Persistence:

   • The pass-through effects of global price shocks vary in magnitude and speed. For example:
     • A food price shock peaks at ~2 percentage points after six quarters.
     • An oil price shock drives inflation by ~1 percentage point after two quarters but reverses quickly.
     • Shipping cost shocks have milder but persistent effects, peaking after two years.

3. Domestic Factors' Role:

   • Domestic slack (output gap) and long-term inflation expectations contributed minimally to inflation dynamics, as global factors dominated the persistence.

Policy Implications

• Central banks should not ignore global price shocks, especially food prices, due to their volatility and persistent effects.
• Monitoring and responding to these shocks is crucial to prevent upward revisions in inflation expectations and mitigate second-round effects.
• Phasing out energy subsidies—a policy plan in many CEMAC countries—may increase domestic inflation pressures.

Conclusion
Global shocks remain a critical factor in shaping CEMAC's inflation dynamics. Addressing extrinsic persistence through timely policy responses and reforms is essential for stabilizing inflation.

Source: IMF Working Paper WP/24/55
Note: The summary adheres to the specified format and excludes figures and appendices.