2023-11-01-IMF-货币政策通过商品价格传导（英）_42页_1mb

Summary of "Monetary Policy Transmission through Commodity Prices"

• Authors: Jorge Miranda-Pinto, Andrea Pescatori, Ervin Prifti, Guillermo Verduzco-Bustos
• Publication: IMF Working Paper WP/23/215, October 2023
• Core Focus: This paper examines how monetary policy shocks transmit through commodity prices to influence domestic and international inflation. It uses high-frequency and monthly data to analyze the effects.

Key Findings

• High-Frequency Effects: A 10 basis points increase in the US monetary policy rate reduces commodity prices by 0.5% to 2.5% within 18-24 business days. This is due to channels beyond simple dollar appreciation, such as the cost of carry and expected demand effects. Commodity prices decline more for storable and industrial commodities like base metals and oil.

• Quantitative Importance: Over a 6-36 month horizon, the commodity price channel explains 41% of the US monetary policy's effect on US headline inflation and 66% of its effect on other countries' headline inflation. For core inflation, base metal prices play a larger role compared to oil and food.

• ECB Comparison: The ECB's monetary policy shock has a smaller effect, mainly through energy prices, and shows limited responses for other commodities like base metals.

• Cross-Country Spillovers: US monetary policy spillovers through commodity prices are stronger in advanced economies, with the channel accounting for over 66% of headline inflation effects in sample countries. Exchange rate and other channels also contribute, but commodity prices are a key driver.

• Methodology: Uses local projection methods for daily high-frequency data (1990-2019) and proxy-SVAR for monthly data to identify monetary policy shocks and their impacts.

Conclusion

The commodity price channel is a significant mechanism in monetary policy transmission, especially for industrial and storable commodities. It has substantial spillback effects domestically and stronger spillovers internationally, reinforcing the need for central banks to consider this channel when setting policy. Factors like commodity storage and global financial cycles amplify these effects.