There have been important methodological changes in the Consumer Price Index (CPI) over time. These distort comparisons of inflation from different periods, which have become more prevalent as inflation has risen to 40-year highs. To better contextualize the current run-up in inflation, this paper constructs new historical series for CPI headline and core inflation that are more consistent with current practices and expenditure shares for the post-war period. Using these series, we find that current inflation levels are much closer to past inflation peaks than the official series would suggest. In particular, the rate of core CPI disinflation caused by Volcker-era policies is significantly lower when measured using today’s treatment of housing: only 5 percentage points of decline instead of 11 percentage points in the official CPI statistics.
We study how the recent run-up in housing and rental prices affects the outlook for inflation in the United States. Housing held down overall inflation in 2021. Despite record growth in private market-based measures of home prices and rents, government measured residential services inflation was only four percent for the twelve months ending in January 2022. After explaining the mechanical cause for this divergence, we estimate that, if past relationships hold, the residential inflation components of the CPI and PCE are likely to move close to seven percent during 2022. These findings imply that housing will make a significant contribution to overall inflation in 2022, ranging from one percentage point for headline PCE, to 2.6 percentage points for core CPI. We expect residential inflation to remain elevated in 2023.
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