How Much Can GSCPI Improvements Help Reduce Inflation?
Inflationary pressures—their determinants and evolution—continue to dominate policy discussions. In this post, we provide a simple framework to analyze the determinants of different measures of inflation and use it to lay out a risk-scenario analysis. We find that global supply factors captured by the New York Fed’s Global Supply Chain Pressure Index (GSCPI) are strongly associated with inflationary developments measured by the producer price index (PPI) and by the c0nsumer price index (CPI). Under the assumption that the GSCPI falls back to its historical average over twelve months, our model would project a substantial easing of consumer price inflation over 2023 to below 4.0 percent. The normalization of the GSCPI would then be consistent with a return of inflation to levels consistent with a soft-landing scenario.
The Global Supply Side of Inflationary Pressures
U.S. inflation has surged as the economy recovers from the COVID-19 recession. This phenomenon has not been confined to the U.S. economy, as similar inflationary pressures have emerged in other advanced economies albeit not with the same intensity. In this post, we draw from the current international experiences to provide an assessment of the drivers of U.S. inflation. In particular, we exploit the link among different measures of inflation at the country level and a number of global supply side variables to uncover which common cross-country forces have been driving observed inflation. Our main finding is that global supply factors are very strongly associated with recent producer price index (PPI) inflation across countries, as well as with consumer price index (CPI) goods inflation, both historically and during the recent bout of inflation acceleration.