As Expected, CPI Inflation Is Higher in November as the Fed Struggles to Hit Its Inflation Target.

Image generated by GTP-4o illustrating inflation.

On December 11, the Bureau of Labor Statistics (BLS) released its monthly report on the consumer price index (CPI). The following figure compares headline inflation (the blue line) and core inflation (the red line).

• The headline inflation rate, which is measured by the percentage change in the CPI from the same month in the previous month, was 2.7 percent—up from 2.6 percent in October. 
• The core inflation rate, which excludes the prices of food and energy, was unchanged at 3.3 percent for the fourth month in a row. 

Both headline inflation and core inflation were the same as economists surveyed by the Wall Street Journal had expected.

In the following figure, we look at the 1-month inflation rate for headline and core inflation—that is the annual inflation rate calculated by compounding the current month’s rate over an entire year. Calculated as the 1-month inflation rate, headline inflation (the blue line) increased sharply from 3.0 percent in October to 3.8 percent in November. Core inflation (the red line) increased from 3.4 percent in October to 3.8 percent in November.

Overall, considering 1-month and 12-month inflation together, the U.S. economy may still be on course for a soft landing—with the annual inflation rate returning to the Fed’s 2 percent target without the economy being pushed into a recession. However, progress on lowering inflation has slowed or, possibly, stalled. So, the probability of a “no landing” outcome, with inflation remaining above the Fed’s target for an indefinite period, seems to have increased.

The relatively high rates of core inflation in both the 12-month and 1-month measures are concerning because most economists believe that core inflation is a better indicator of the underlying inflation rate than is headline inflation. It’s important not to overinterpret the data from a single month, although this is the fourth month in a row that core inflation has been above 3 percent. (Note, that the Fed uses the personal consumption expenditures (PCE) price index, rather than the CPI in evaluating whether it is hitting its 2 percent inflation target.)

As we’ve discussed in previous blog posts, Federal Reserve Chair Jerome Powell and his colleagues on the Fed’s policymaking Federal Open Market Committee (FOMC) have been closely following inflation in the price of shelter. The price of “shelter” in the CPI, as explained here, includes both rent paid for an apartment or house and “owners’ equivalent rent of residences (OER),” which is an estimate of what a house (or apartment) would rent for if the owner were renting it out. OER is included in the CPI to account for the value of the services an owner receives from living in an apartment or house.

As the following figure shows, inflation in the price of shelter has been a significant contributor to headline inflation. The blue line shows 12-month inflation in shelter, and the red line shows 1-month inflation in shelter. Twelve-month inflation in shelter has been declining since the spring of 2023, but in November it was at a still high 4.8 percent. One-month inflation in shelter—which is much more volatile than 12-month inflation in shelter—fell from 4.7 percent in October to 4.1 percent in November.

To better estimate of the underlying trend in inflation, some economists look at median inflation and trimmed mean inflation.

• Median inflation is calculated by economists at the Federal Reserve Bank of Cleveland and Ohio State University. If we listed the inflation rate in each individual good or service in the CPI, median inflation is the inflation rate of the good or service that is in the middle of the list—that is, the inflation rate in the price of the good or service that has an equal number of higher and lower inflation rates. 
• Trimmed mean inflation drops the 8 percent of good and services with the highest inflation rates and the 8 percent of goods and services with the lowest inflation rates. 

The following figure is from the Federal Reserve Bank of Cleveland. It shows that median inflation (the orange line) fell from 4.1 percent in October to 3.9 percent in November. Trimmed mean inflation (the blue line) was unchanged at 3.2 percent for the fourth month in a row. These data provide confirmation that (1) core CPI inflation at this point is likely running higher than a rate that would be consistent with the Fed achieving its inflation target, and (2) that progress toward the target has slowed.

Will this persistence in inflation above the Fed’s 2 percent target cause the FOMC to hold constant its target range for the federal funds rate? Investors who buy and sell federal funds futures contracts still expect that the FOMC will cut its target for the federal funds rate by 0.25 percentage point at its next meeting on December 17-18. (We discuss the futures market for federal funds in this blog post.) The following figure shows that today these investors assign a probability of 94.7 percent to the FOMC cutting its target for the federal funds rate by 0.25 percentage point and a probability of only 5.3 percent to the committee leaving its target unchanged at its current range of 4.50 percent to 4.75 percent.