Tag: Stagflation

CPI Inflation Worsens, as Expected

Image generated by ChatGPT.

Today (September 11), the Bureau of Labor Statistics (BLS) released its report on the consumer price index (CPI) for August. The following figure compares headline CPI inflation (the blue line) and core CPI 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 year, was 2.9 percent in August, up from 2.7 in July. 
  • The core inflation rate, which excludes the prices of food and energy, was 3.1 percent in August, up slightly from 3.0 percent in July. 

Headline inflation and core inflation were both the same as economists surveyed 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) jumped from 2.4 percent in July to 4.7 percent in August. Core inflation (the red line) increased from 3.9 percent in July to 4.2 percent in August.

The 1-month and 12-month inflation rates are both indicating that inflation accelerated in August. Core inflation—which is often a good indicator of future inflation—in particular has been running well above the Fed’s 2 percent inflation target during the last two months.

Of course, it’s important not to overinterpret the data from a single month. The figure shows that the 1-month inflation rate is particularly volatile. Also note that the Fed uses the personal consumption expenditures (PCE) price index, rather than the CPI, to evaluate whether it is hitting its 2 percent annual inflation target.

Core inflation had been running significantly higher than headline inflation in the past few months because gasoline prices had generally been falling since February. Gasoline prices turned around in August, however, increasing at a 25.5 percent annual rate. As shown in the following figure, 1-month inflation in gasoline prices moves erratically—which is the main reason that gasoline prices aren’t included in core inflation.

Does the increase in inflation represent the effects of the increases in tariffs that the Trump administration announced on April 2? (Note that many of the tariff increases announced on April 2 have since been reduced) The following figure shows 12-month inflation in durable goods—such as furniture, appliances, and cars—which are likely to be affected directly by tariffs, and services, which are less likely to be affected by tariffs.. To make recent changes clearer, we look only at the months since January 2022. In August, inflation in durable goods increased to 1.9 percent from 1.2 percent in July. Inflation in services in August was 3.8 percent, unchanged from July.

The following figure shows 1-month inflation in the prices of these products, which may make the effects of tariffs clearer. In August, durable goods inflation was 5.1 percent up from 4.5 percent in July. Service inflation was 3.9 percent in August, down slightly from 4.0 percent in July. Inflation in goods and services both running well above 2 percent is not good news for inflation falling back to the Fed’s 2 percent target in the near future.

To better estimate 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 goods and services with the highest inflation rates and the 8 percent of goods and services with the lowest inflation rates. 

The following figure shows that 12-month trimmed-mean inflation (the blue line) was 3.3 percent in August, up slightly from 3.2 July. Twelve-month median inflation (the red line) 3.6 percent in August, unchanged from July.


The following figure shows 1-month trimmed-mean and median inflation. One-month trimmed-mean inflation rose from 2.9 percent in July to 3.2 percent in August. One-month median inflation remained unchanged at 3.4 percent in August. These data are consistent with the view that inflation is running above the Fed’s 2 percent target.


The CPI inflation data combined with the recent jobs data (which we discuss here and here), indicate that the U.S. economy may be entering a period of stagflation—a combination of rising inflation with falling, or stagnating, output. Stagflation poses a policy dilemma for the Fed’s policymaking Federal Open Market Committee (FOMC) because cutting its target for the federal funds rate to increase economic growth and employment may worsen inflation. At this point, it seems likely that the FOMC will “look through” this month’s rising inflation because it may be largely due to one-time price increases caused by tariffs. Committee members have signaled that they are likely to cut their target for the federal funds rate by 0.25 percent (25 basis points) at the conclusion of their meeting on September 16–17 and again at the conclusion of the following meeting on October 28–29.

Does the Latest GDP Report Indicate the U.S. Economy Is Entering a Period of Stagflation?

Arthur Burns was Fed chair during the stagflation of the 1970s. (Photo from the Wall Street Journal)

This morning, Thursday April 25, the Bureau of Economic Analysis (BEA) released its advance estimate of real GDP growth during the first quarter of 2024. The two most striking points in the report are, first, that real GDP increased in the first quarter at an annual rate of only 1.6 percent—well below the 2.5 percent increase expected in a survey of economists and the 2.7 percent increase indicated by the Federal Reserve Bank of Atlanta’s GDPNow forecast. As the following figure shows, the growth rate of real GDP has declined in each of the last two quarters from the very strong growth rate of 4.9 percent during the third quarter of 2023.  

The second striking point in the report was an unexpected increase in inflation, as measured using the personal consumption expenditures (PCE) price index. As the following figure shows, PCE inflation (the red line), measured as a compound annual rate of change, increased from 1.8 percent in the fourth quarter of 2023 to 3.4 percent in the first quarter of 2024. Core PCE inflation (the blue line), which excludes food and energy prices, increased from 2.0 percent in the fourth quarter of 2023 to 3.7 percent in the first quarter of 2024. These data indicate that inflation in the first quarter of 2024 was running well above the Federal Reserve’s 2.0 percent target.

A combination of weak economic growth and above-target inflation poses a policy dilemma for the Fed. As we discuss in Macroeconomics, Chapter 13, Section 13.3 (Economics, Chapter 23, Section 23.3), the combination of slow growth and inflation is called stagflation. During the 1970s, when the U.S. economy suffered from stagflation, Fed Chair Arthur Burns (whose photo appears at the beginning of this post) was heavily criticized by members of Congress for his inability to deal with the problem. Stagflation poses a dilemma for the Fed because using an expansionary monetary policy to deal with slow economic growth may cause the inflation rate to rise. Using a contractionary monetary policy to deal with high inflation can cause growth to slow further, possibly pushing the economy into a recession.

Is Fed Chair Jerome Powell in as difficult a situation as Arthur Burns was in the 1970s? Not yet, at least. First, Burns faced a period of recession—declining real GDP and rising unemployment—whereas currently, although economic growth seems to be slowing, real GDP is still rising and the unemployment rate is still below 4 percent. In addition, the inflation rate in these data are below 4 percent, far less than the 10 percent inflation rates during the 1970s.

Second, it’s always hazardous to draw conclusions on the basis of a single quarter’s data. The BEA’s real GDP estimates are revised several times, so that the value for the first quarter of 2024 may well be revised significantly higher (or lower) in coming months.

Third, the slow rate of growth of real GDP in the first quarter is accounted for largely by a surge in imports—which are subtracted from GDP—and a sharp decline in inventory investment. Key components of aggregate demand remained strong: Consumption expenditures increased at annual rate of 2.5 per cent and business investment increased at an annual rate of 3.2 percent. Residential investment was particularly strong, growing at an annual rate 0f 13.2 percent—despite the effects of rising mortgage interest rates. One way to strip out the effects of net exports, inventory investment, and government purchases—which can also be volatile—is to look at final sales to domestic purchasers, which includes only spending by U.S. households and firms on domestic production. As the following figure shows, real final sales to domestic purchasers declined only modertately from 3.3 percent in the fourth quarter of 2023 to 3.1 percent in the first quarter of 2024.

Looking at these details of the GDP report indicate that growth may have slowed less during the first quarter than the growth rate of real GDP seems to indicate. Investors on Wall Street may have come to this same conclusion. As shown by this figure from the Wall Street Journal, shows that stock prices fell sharply when trading opened at 9:30 am, but by 2 pm has recovered some of their losses as investors considered further the implications of the GDP report. (As we discuss in Macroeconomics, Chapter 6, Section 6.2 and Economics, Chapter 8, Section 8.2, movements in stock price indexes can provide some insight into investors’ expectations of future movements in corporate profits, which, in turn, depend in part on future movements in economic growth.)

Finally, we may get more insight into the rate of inflation tomorrow morning when the BEA releases its report on “Personal Income and Outlays,” which will include data on PCE inflation during March. The monthly PCE data provide more current information than do the quarterly data in the GDP report.

In short, today’s report wasn’t good news, but may not have been as bad as it appeared at first glance. We are far from being able to conclude that the U.S. economy is entering into a period of stagflation.

Solved Problem: The Fed’s Policy Dilemma

Supports:  Macroneconomics Chapter 15, Section 15.3; Economics Chapter 25, Section 25.3; and Essentials of Economics Chapter 17, Sections 17.3.

Solved Problem: The Fed’s Policy Dilemma

   In the fall of 2021, the inflation rate was at its highest level since 2008. The unemployment rate was above 5 percent, which was much lower than in the spring of 2020, but still well above its level of early 2020 before the Covid-19 pandemic. In testifying before Congress, Fed Chair Jerome Powell stated that he believed the high inflation rate was transitory and in the longer run “inflation is expected to drop back toward our longer-run 2 percent goal.”

But Powell also stated that if inflation continued to remain high the Fed would face a policy dilemma. “Almost all of the time, inflation is low when unemployment is high, so interest rates work on both problems.” But in contrast, in the fall of 2021 both the unemployment and inflation rates were high: “That’s the very difficult situation we find ourselves in.”

a. Briefly explain what Powell meant by saying that almost all of the time “interest rates work on both problems.”

b. Why did macroeconomic conditions in the fall of 2021 present Fed policymakers with a “very difficult” situation?

Source: Kate Davidson and Nick Timiraos, “Powell Says Fed Faces ‘Difficult Trade-Off’ if Inflation Doesn’t Moderate,” Wall Street Journal, September 30, 2021; and Chair Jerome H. Powell, “Testimony Before the Committee on Banking, Housing, and Urban Affairs, U.S. Senate, Washington, D.C.” September 28, 2021, federalreserve. gov..

Solving the Problem

Step 1:   Review the chapter material. This problem is about the policy situation the Fed faces when the unemployment and inflation rates are both high, so you may want to review Chapter 15, Section 15.3, “Monetary Policy and Economic Activity,” and the discussion of staflation, including Figure 13.7, in Chapter 13, Section 13.3, “Macroeconomic Equilibrium in the Long Run and the Short Run.”

Step 2:   Explain what Powell meant by “interest rates work on both problems.” We’ve seen that in the typical recession the unemployment rate increases while the inflation rate decreases. We’ve also seen that if the economy is above potential GDP, the unemployment rate is very low but the inflation rate increases. (To review these facts, see Chapter 10, Section 10.3 “The Business Cycle.”) The Fed uses changes in its target for the federal funds rate to affect the level of real GDP and the price level, as it attempts to hit its policy goals of high employment and price stability.

So “almost all of the time,” the Fed can use interest rates–changes in the target for the federal funds rate–to work on the problems of high unemployment and high inflation–depending on which is occuring during a particular period.

Step 3: Explain why macroeconomic conditions in the fall of 2021 presented Fed policymakers with a “very difficult” situation. As Powell observes, “almost all the time” Fed policy is focused on reducing either high unemployment or high inflation, but not both. As we note in Chapter 13, Section 13.3, economists refer to a situation when the unemployment and inflations rates are both high at the same time as a period of stagflation. If the inflation rate is high, then expansionary monetary policy–a low target for the federal funds rate–will reduce the unemployment rate but make an already high inflation rate even higher. Similarly, if the unemployment rate is high, then contractionary monetary policy–a high target for the federal funds rate–will reduce the inflation rate but make an already high unemploument rate even higher. A very difficult policy dilemma for the Fed!

How did Fed policymakers expect to resolve this difficulty? In his testimony, Powell explained that he believed that the high inflation rate the U.S. economy was experiencing during the fall of 2021 was transitory and would begin to decline once the supply problems caused by the Covid-19 pandemic were resolved in the coming months. Referring to the supply problems he noted that “These aren’t things that we [the Fed] can control.” Therefore, the Fed did not intend to use policy to address the high inflation rate and could continue to pursue an expansionary monetary policy to push the labor market back to full employment.