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Consumer Price Index

Recent and upcoming methodology changes: 2023

Changes to new vehicles methodology (posted March 8, 2023)

With the release of February 2023 data in March, the CPI for new vehicles will modify model changeover processing so that model year changeovers designated as ‘non-comparable’ will be excluded from the year-over-year calculation.

Changes to new vehicles methodology (posted January 4, 2023)

With the release of January 2023 in February, the CPI for new vehicles will introduce a methodology improvement to the time series filter that estimates the most recent cyclical trend and short term fluctuations. The new vehicles factsheet will also be updated at that time.

Owner’s Equivalent Rent (OER) Unit Weight Refinement (posted September 2, 2022)

Beginning with January 2023 data, BLS plans to adjust the weighting method for Owner’s Equivalent Rent (OER) in the CPI. The new method will use neighborhood level information on housing structure types to weight OER’s unit sample observations.  BLS will continue to sample and weight housing units to be geographically representative.  In some neighborhoods, detached houses are underrepresented in survey responses so additional unit weight will be given to underrepresented detached houses in the OER index sample.  For more information on adjusting housing weights for structure types, see the research article “Location, Location, Structure Type: Rent Divergence within Neighborhoods.”

Last Modified Date: March 8, 2023