PCE data from the BEA, CPI data from the BLS, chart by Mish
Chart Notes
CPI MeasurementsThe CPI measures prices of items directly paid by consumers. Shelter has the biggest weight at 36.315 percent of the entire index.Home prices are not in the CPI, just rent and Owners’ Equivalent Rent (OER). OER is the price a homeowner would pay to rent if they rented instead of owned.
PCE MeasurementsThe PCE contains items directly paid by consumers but also expenses paid on behalf of consumers. Medical care is the best example. The PCE measures prices of individual policies as well as corporate health policies and Medicare.
CPI vs PCENeither measures home prices directly. Both measures are flawed. Inflation matters, not just consumer inflation. The Fed has not figured this out.As a result of the difference in measurements and weights, Rent has a bigger impact on the CPI compared to PCE, and PCE overweighs health care vs the CPI.The biggest factor in estimating year-over-year changes is what happened to the month-over-month change a year ago.Investopedia notes “Prior PCE figures are subject to revision every year. That can result in different measurements over extended periods. Some observers feel that this reflects the inability to value personal consumption expenditures accurately.”
Expected ResultsThe Bloomberg consensus was correct across the board.I expected the PCE price index would rise 0.1 percent not 0.2 percent.Calculated to two decimal places, the increase was 0.16 percent. Another 0.02 percentage points would have done it.For discussion, please see Expect Favorable CPI and PCE Inflation Reports for Two More MonthsI am much more confident of year-over-year declines in both PCE and CPI indexes for August and September.I will revisit more precise estimates later, but I expect at least a 0.2 percentage point improvement in all of the numbers in my lead chart.More By This Author:The Gap Between Real GDP And GDI Increases To New Record $616 BillionMomentum For Harris Stalls, Silver Calls The Election A 50-50 Tossup The Not Affordable American Dream In Three Pictures