Heaven or Earth? The Evolving Role of Global Shocks for Domestic Monetary Policy

Kristin Forbes, Jongrim Ha and M. Ayhan Kose

No 21109, CEPR Discussion Papers from Centre for Economic Policy Research

Abstract: Business cycles are increasingly driven by global shocks, rather than the domestic demand shocks prominent in earlier decades, posing challenges for central banks seeking to meet domestic mandates and communicate their policy decisions. This paper analyzes the evolving influence and characteristics of global and domestic shocks in advanced economies from 1970-2024 using a new FAVAR model that decomposes movements in interest rates, inflation, and output growth into four global shocks (demand, supply, oil, and monetary policy) and three domestic shocks (demand, supply, and monetary policy). We find that the role of global shocks has increased sharply over time and that their characteristics differ from those of domestic shocks across multiple dimensions. Compared to domestic shocks, global shocks have a larger supply component, higher variance, more persistent effects on inflation, and are more asymmetric (contributing more to tightening than to easing phases of monetary policy). As global supply shocks have become more prominent, central banks have also been less willing to “look through†their effects on inflation than for comparable domestic shocks. The distinct characteristics and rising influence of global shocks—particularly global supply shocks—have significant implications for modeling monetary policy and designing central bank frameworks.

Keywords: Federal; funds; rate (search for similar items in EconPapers)
JEL-codes: E31 E32 E52 F41 F42 F44 F47 G2 Q43 (search for similar items in EconPapers)
Date: 2026-02
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