Median inflation – HubbardOBrienEconomics.com Blog

New PCE Data Show Inflation Slowing

Image generated by GTP-4o of people shopping.

As we discussed in this blog post on Wednesday, the Federal Reserve’s policymaking Federal Open Market Committee (FOMC) voted to reduce its target for the federal funds rate by 0.25 percentage point. After the meeting, the committee released its “Summary of Economic Projections” (SEP). The SEP showed that the committee’s forecasts of the inflation rate as measured by the personal consumption expenditures (PCE) price index for this year and next year are both higher than the committee had forecast in September, when the last SEP was released. The Fed relies on annual changes in the PCE price index to evaluate whether it’s meeting its 2 percent annual inflation target.

This morning (December 20), the BEA released monthly data on the PCE price index as part of its “Personal Income and Outlays” report for November.

The following figure shows PCE inflation (the blue line) and core PCE inflation (the red line)—which excludes energy and food prices—for the period since January 2016 with inflation measured as the percentage change in the PCE from the same month in the previous year. Measured this way, in November PCE inflation was 2.4 percent, up from 2.3 percent in October. Core PCE inflation in November was 2.8 percent, unchanged from October. Both PCE inflation and core PCE inflation were slightly lower than the expectations of economists surveyed before the data were released.

The following figure shows PCE inflation and core PCE inflation calculated by compounding the current month’s rate over an entire year. (The figure above shows what is sometimes called 12-month inflation, while this figure shows 1-month inflation.) Measured this way, PCE inflation fell sharply in November to 1.5 percent from 2.8 percent in October. Core PCE inflation also fell from 3.2 percent in October to 1.4 percent in November. Although both 12-month PCE inflation and 12-month core PCE inflation remained above the Fed’s 2 percent annual inflation target, 1-month PCE inflation and 1-month core PCE inflation dropped to well below the inflation target. But the usual caution applies that data from one month shouldn’t be overly relied on; it’s far too soon to draw the conclusion that inflation is likely to remain below the 2 percent target in future months.

Median inflation is calculated by economists at the Federal Reserve Bank of Cleveland and Ohio State University as another way of measuring the underlying trend in inflation. If we listed the inflation rate for each individual good or service included in the PCE, 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. The following figure from the Federal Reserve Bank of Cleveland includes, along with PCE inflation (the green line) and core PCE inflation (the blue line), median PCE inflation (the orange line). All three inflation rates are measured over 12 months. Median PCE inflation in November was 3.1 percent, unchanged from October.

In his press conference earlier this week, Fed Chair Jerome Powell noted that: “we’ve had recent high readings from non-market services.” Non-market services are services whose prices the BEA imputes rather than measures directly. For instance, the BEA assumes that prices of financial services—such as brokerage fees—vary with the prices of financial assets. So that if stock prices rise, the prices of financial services included in the PCE price index also rise. Powell argued that these imputed prices “don’t really tell us much about … tightness in the economy. They don’t really reflect that.” The following figure shows 12-month inflation (the blue line) and 1-month inflation (the red line) for market-based PCE, excluding the prices of food and energy. (The BEA explains the market-based PCE measure here.)

These measures of inflation tell a similar story to the measures considered earlier: 12-month inflation continues to run above the Fed’s 2 percent inflation target, while 1-month inflation slowed significantly in November and is below the 2 percent target. By this measure 12-month inflation was unchanged in November at 2.4 percent, while 1-month inflation declined from 2.5 percent in October to 1.4 percent in November.

To summarize, the less volatile 12-month measures of inflation show it to be persistently above the Fed’s target, while the more volatile 1-month measures show inflation to have fallen below target. If the FOMC were to emphasize the 1-month measures, we might expect them to continue cutting the target for the federal funds rate at the committee’s next meeting on January 28-29. The more likely outcome is that, unless other macroeconomic data that are released between now and that meeting indicate a significant strengthening or weakening of the economy, the committee will leave its target for the federal funds rate unchanged. (The BEA’s next release of monthly PCE data won’t occur until January 31, which is after the FOMC meeting.)

Investors who buy and sell federal funds futures contracts expect that the FOMC will leave its federal funds rate target unchanged at its next meeting. (We discuss the futures market for federal funds in this blog post.) As shown in the following figure, investors assign a probability of 91.4 percent to the FOMC leaving its target for the federal funds rate at the current range of 4.25 percent to 4.50. Investors assign a probability of only 8.6 percent to the FOMC cutting its target by 0.25 percentage point.

Inflation Cools Slightly in Latest CPI Report

Inflation was running higher than expected during the first three months of 2024, indicating that the trend in late 2023 of declining inflation had been interrupted. At the beginning of the year, many economists and analysts had expected that the Federal Reserve’s policy-making Federal Open Market Committee (FOMC) would begin cutting its target for the federal funds rate sometime in the middle of the year. But with inflation persisting above the Fed’s 2 percent inflation target, it has become likely that the FOMC will wait until later in the year to start cutting its target and might decide to leave the target unchanged through the remainder of 2024.

Accordingly, economists and policymakers were intently awaiting the report from the Bureau of Labor Statistics (BLS) on the consumer price index (CPI) for April. The report released this morning showed a slight decrease in inflation, although the inflation rate remains well above the Fed’s 2 percent target. (Note that, as we discuss in Macroeconomics, Chapter 15, Section 15.5 (Economics, Chapter 25, Section 25.5), 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.)

The inflation rate for April measured by the percentage change in the CPI from the same month in the previous month—headline inflation—was 3.4 percent—about the same as economists had expected—down from 3.5 percent in March. As the following figure shows, core inflation—which excludes the prices of food and energy—was 3.6 percent in April, down from 3.8 percent in March.

If 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—the declines in the inflation rate are larger. Headline inflation declined from 4.6 percent in March to 3.8 percent in April. Core inflation declined from 4.4 percent in March to 3.6 percent in April. Note that the value for core inflation is the same whether we measure over 12 months or over 1 month. Overall, we can say that inflation seems to have cooled in April, but it still remains well above the Fed’s 2 percent target.

As has been true in recent months, the path of inflation in the prices of services has been concerning. As we’ve noted in earlier posts, Federal Reserve Chair Jerome Powell has emphasized that as supply chain problems have gradually been resolved, inflation in the prices of goods has been rapidly declining. But inflaion in services hasn’t declined nearly as much. Powell has been particularly concernd about how slowly the price of housing has been declining, a point he made again in the press conference that followed the most recent FOMC meeting.

The following figure shows the 1-month inflation rate in service prices and in service prices not included including housing rent. The figure shows that inflation in all service prices has been above 4 percent in every month since July 2023, but inflation in service prices slowed markedly from 6.6 percent in March to 4.4 percent in April. Inflation in service prices not including housing rent declined more than 50 percent, from 8.9 percent in March to 3.4 percent in April. But, again, even though inflation in service prices declined in April, as the figure shows, the 1-month inflation in services is volatile and even these smaller increases aren’t yet consistent with the Fed meeting its 2 percent inflation target.

Finally, in order to get a better estimate of the underlying trend in inflation, some economists look at median inflation, which 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. As the following figure shows, at 4.3 percent, median inflation in April was unchanged from its value in March.

Today’s report was good news for the Fed in its attempts to reduce the inflation rate to its 2 percent target without pushing the U.S. economy into a recession. But Fed Chair Jerome Powell and other members of the FOMC have made clear that they are unlikely to begin cutting the target for the federal funds rate until they receive several months worth of data indicating that inflation has clearly resumed the downward path it was on during the last months of 2023. The unexpectedly high inflation data for the first three months of 2024 has clearly had a significant effect on Fed policy. Powell was quoted yesterday as noting that: “We did not expect this to be a smooth road, but these [inflation readings] were higher than I think anybody expected,”

Is Sugar All You Need?

Dylan’s Candy Bar in New York City (Photo from the New York Times)

Can prices of one type of good track inflation accurately? As we’ve discussed in a number of blog posts (for instance, here, here, and here), there is a debate among economists about which of the data series on the price level does the best job of tracking the underlying rate of inflation.

The most familiar data series on the price level is the consumer price index (CPI). Core CPI excludes the—typically volatile—food and energy prices. In gauging whether it is achieving its goal of 2 percent annual inflation, the Federal Reserve uses the personal consumption expenditures (PCE) price index. The PCE price index includes the prices of all the goods and services included in the consumption category of GDP, which makes it a broader measure of inflation than the CPI. To understand the underlying rate of inflation, the Fed often focuses on movements in core PCE.

With the increase in inflation that started in the spring of 2021, some economists noted that the prices of particular goods and services—such as new and used cars and housing—were increasing much more rapidly than other prices. So some economists concentrated on calculating inflation rates that excluded these or other prices from either the CPI or the PCE.

For example, the following figure shows the inflation rate measured by the percentage change from the same month in the previous year using the median CPI and using the trimmed mean PCE. If we list 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. The trimmed mean measure of PCE inflation is compiled by economists at the Federal Reserve Bank of Dallas by dropping from the PCE the goods and services that have the highest and lowest rates of inflation. During the period when the inflation rate was increasing rapidly during 2021 and 2022, CPI inflation increased more and was more volatile than PCE inflation. That difference between movements in the two price level series is heightened when comparing median inflation in the CPI with trimmed mean inflation in the PCE. In particular, using trimmed mean PCE, the inflation of late 2021 and 2022 seems significantly milder than it does using median CPI.

The United States last experienced high inflation rates in the 1970s, when few people used personal computers and easily downloading macroeconomic data from the internet wasn’t yet possible. Today, it’s comparatively easy to download data on the CPI and PCE and manipulate them to investigate how the inflation rate would be affected by dropping the prices of various goods and services. It’s not clear, though, that this approach is always helpful in determining the underlying inflation rate. In a market system, the prices of many goods and services will be affected in a given month by shifts in demand and supply that aren’t related to general macroeconomic conditions.

In a recent blog post, economists B. Ravikumar and Amy Smaldone of the Federal Reserve Bank of St. Louis note that there is a strong correlation between movements in the prices of the “Sugar and Sweets” component of the CPI and movements in the overall CPI. Their post includes the following two figures. The first shows the price level since 1947 calculated using the prices of all the goods and services in the CPI (blue line) and the price level calculated just using the prices of goods included in the “Sugar and Sweets” category (red line). The data are adjusted to an index where the value for each series in January 1990 equals 100. The second figure shows the percentage change from the previous month for both series for the months since January 2000.

The two figures show an interesting—and perhaps surprising—correlation between sugar and sweets prices and all prices included in the CPI. The St. Louis Fed economists note that although the CPI is only published once per month, prices on sugar and sweets are available weekly. Does that mean that we could use prices on sugar and sweets to predict the CPI? That seems unlikely. First, consider that the sugar and sweets category of the CPI consists of three sub-categories:

White, brown, and raw sugar and natural and artificial sweetners
Chocolate and other types of candy, fruit flavored rolls, chewing gum and breath mints
Other sweets, including jelly and jams, honey, pancake syrup, marshmallows, and chocolate syrup

Taken together these products are less than 3 percent of the products included in the CPI. In addition, the prices of the goods in this category can be heavily dependent on movements in sugar and cocoa prices, which are determined in world wide markets. For instance, the following figure shows the world price of raw cocoa, which soared in 2024 due to bad weather in West Africa, where most cocoa is grown. There’s no particular reason to think that factors affecting the markets for sugar and cocoa will also affect the markets in the United States for automobiles, gasoline, furniture, or most other products.

In fact, as the first figure below shows, if we look at the inflation rate calculated as the percentage change from the same month in the previous year, movements in sugar and sweets prices don’t track very closely movements in the overall CPI. Beginning in the summer of 2022—an important period when the inflation that began in the spring of 2021 peaked—inflation in sugar and sweets was much higher than overall CPI inflation. Anyone using prices of sugar and sweets to forecast what was happening to overal CPI inflation would have made very poor predictions. We get the same conclusion from comparing inflation calculated by compounding the current month’s rate over an entire year: Inflation in sugar and sweets prices is much more volatile than is overall CPI inflation. That conclusion is unsurprising given that food prices are generally more volatile than are the prices of most other goods.

It can be interesting to experiment with excluding various prices from the CPI or the PCE or with focusing on subcategories of these series. But it’s not clear at this point whether any of these adjustments to the CPI and the PCE, apart from excluding all food and energy prices, gives an improved estimate of the underlying rate of inflation.

How Will the Fed React to Another High Inflation Report?

In a recent podcast we discussed what actions the Fed may take if inflation continues to run well above the Fed’s 2 percent target. We are likely a step closer to finding out with the release this morning (April 10) by the Bureau of Labor Statistics (BLS) of data on the consumer price index (CPI) for March. The inflation rate measured by the percentage change in the CPI from the same month in the previous month—headline inflation—was 3.5 percent, slightly higher than expected (as indicated here and here). As the following figure shows, core inflation—which excludes the prices of food and energy—was 3.8 percent, the same as in January.

If 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—the values seem to confirm that inflation, while still far below its peak in mid-2022, has been running somewhat higher than it did during the last months of 2023. Headline CPI inflation in March was 4.6 percent (down from 5.4 percent in February) and core CPI inflation was 4.4 percent (unchanged from February). It’s worth bearing in mind that the Fed’s inflation target is measured using the personal consumption expenditures (PCE) price index, not the CPI. But CPI inflation at these levels is not consistent with PCE inflation of only 2 percent.

“Part of the reason for the modest decline of nonhousing services inflation so far is that many of these services were less affected by global supply chain bottlenecks and are generally thought to be less interest sensitive than other sectors such as housing or durable goods. Production of these services is also relatively labor intensive, and the labor market remains tight. Given the size of this sector, some further progress here will be essential to restoring price stability.”

The following figure shows the 1-month inflation rate in services prices and in services prices not included including housing rent. Some economists believe that the rent component of the CPI isn’t well measured and can be volatile, so it’s worthwhile to look at inflation in service prices not including rent. The figure shows that inflation in all service prices has been above 4 percent in every month since July 2023. Inflation in service prices increased from 5.8 percent in February to 6.6 percent in March . Inflation in service prices not including housing rent was even higher, increasing from 7.5 percent in February to 8.9 percent in March. Such large increases in the prices of services, if they were to continue, wouldn’t be consistent with the Fed meeting its 2 percent inflation target.

Finally, some economists and policymakers look at median inflation to gain insight into the underlying trend in the inflation rate. 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. As the following figure shows, although median inflation declined in March, it was still high at 4.3 percent. Median inflation is volatile, but the trend has been generally upward since July 2023.

Financial investors, who had been expecting that this CPI report would show inflation slowing, reacted strongly to the news that, in fact, inflation had ticked up. As of late morning, the Dow Jones Industrial Average had decline by nearly 500 points and the S&P 5o0 had declined by 59 points. (We discuss the stock market indexes in Macroeconomics, Chapter 6, Section 6.2 and in Microeconomics and Economics, Chapter 8, Section 8.2.) The following figure from the Wall Street Journal shows the sharp reaction in the bond market as the interest rate on the 10-year Treasury note rose sharply following the release of the CPI report.

Lower stock prices and higher long-term interest rates reflect the fact that investors have changed their views concerning when the Fed’s Federal Open Market Committee (FOMC) will cut its target for the federal funds and how many rate cuts there may be this year. At the start of 2024, the consensus among investors was for six or seven rate cuts, starting as early as the FOMC’s meeting on March 19-20. But with inflation remaining persistently high, investors had recently been expecting only two or three rate cuts, with the first cut occurring at the FOMC’s meeting on June 11-12. Two days ago, Neel Kashkari, president of the Federal Reserve Bank of Minneapolis raised the possibility that the FOMC might not cut its target for the federal funds rate during 2024. Some economists have even begun to speculate that the FOMC might feel obliged to increase its target in the coming months.

After the FOMC’s next meeting on April 30-May 1 first, Chair Powell may provide some additional information on the committee’s current thinking.

Consumer Price Inflation Comes in Somewhat Higher than Expected

Federal Reserve Chair Jerome Powell (Photo from Bloomberg News via the Wall Street Journal.)

Economists, policymakers, and Wall Street analysts have been waiting for macroeconomic data to confirm that the Federal Reserve has brought the U.S. economy in for a soft landing, with inflation arrving back at the Fed’s target of 2 percent without the economy slipping into a recession. Fed officials have been cautious about declaring that they have yet seen sufficient data to be sure that a soft landing has actually been achieved. Accordingly, they are not yet willing to begin cutting their target for the federal funds rate.

For instance, on March 6, in testifying before the Commitee on Financial Services of the U.S. House of Representatives, Fed Chair Jerome Powell stated that the Fed’s Federal Open Market Committee (FOMC) “does not expect that it will be appropriate to reduce the target range until it has gained greater confidence that inflation is moving sustainably toward 2 percent.” (Powell’s statement before his testimony can be found here.)

The BLS’s release today (March 12) of its report on the consumer price index (CPI) (found here) for February indicated that inflation was still running higher than the Fed’s target, reinforcing the cautious approach that Powell and other members of the FOMC have been taking. The increase in the CPI that includes the prices of all goods and services in the market basket—often called headline inflation—was 3.2 percent from the same month in 2023, up slightly from 3.1 In January. (We discuss how the BLS constructs the CPI in Macroeconomics, Chapter 9, Section 19.4, Economics, Chapter 19, Section 19.4, and Essentials of Economics, Chapter 3, Section 13.4.) As the following figure shows, core inflation—which excludes the prices of food and energy—was 3.8 percent, down slightly from 3.9 percent in January.

If 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—the values are more concerning, as indicated in the following figure. Headline CPI inflation is 5.4 percent (up from 3.7 percent in January) and core CPI inflation is 4.4 percent (although that is down from 4.8 percent in January). The Fed’s inflation target is measured using the personal consumption expenditures (PCE) price index, not the CPI. But CPI inflation at these levels is not consistent with PCE inflation of only 2 percent.

Even more concerning is the path of inflation in the prices of services. As we’ve noted in earlier posts, Chair Powell has emphasized that as supply chain problems have gradually been resolved, inflation in the prices of goods has been rapidly declining. But inflaion in services hasn’t declined nearly as much. Last summer he stated the point this way:

The following figure shows the 1-month inflation rate in services prices and in services prices not included including housing rent. Some economists believe that the rent component of the CPI isn’t well measured and can be volatile, so it’s worthwhile to look at inflation in service prices not including rent. The figure shows that inflation in all service prices has been above 4 percent in every month since July 2023. Although inflation in service prices declined from January, it was still a very high 5.8 percent in February. Inflation in service prices not including housing rent was even higher at 7.5 percent. Such large increases in the prices of services, if they were to continue, wouldn’t be consistent with the Fed meeting its 2 percent inflation target.

Finally, some economists and policymakers look at median inflation to gain insight into the underlying trend in the inflation rate. 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. As the following figure shows, although median inflation declined in February, it was still high at 4.6 percent and, although median inflation is volatile, the trend has been generally upward since July 2023.

The data in this month’s BLS report on the CPI reinforces the view that the FOMC will not move to cut its target for the federal funds rate in the meeting next week and makes it somewhat less likely that the committee will cut its target at the following meeting on April 30-May 1.