Economists: Hot PPI shows Fed's work is not done

The producer price index rose 1.3% in the latest monthly reading. Economists had expected a 0.6% increase, so the result was more than twice the consensus forecast. Such a gap matters because it signals stronger price pressure than analysts and policymakers had anticipated.

Gasoline prices supplied a major push, rising 20% during the month. The increase lifted the year-over-year PPI gain to 6.3%, its biggest jump since December 2022. However, the data also showed pressure beyond gasoline and other volatile categories.

Prices excluding food, energy, and trade services still rose 0.5%. That broader increase helped raise estimates for September core PCE inflation to 0.32%, from 0.25% in August. The hotter data increased concern that the Federal Reserve might raise interest rates again, even though futures showed only a 29% chance of a hike this month.

The producer price index, or PPI, measures changes in the prices producers receive for goods and services. It is an upstream inflation gauge. In standard economic use, it helps show whether businesses are facing rising costs or receiving higher prices before those changes may appear in consumer prices.

For example, the latest PPI rose 1.3% in one month. Gasoline prices climbed 20%, helping push the index’s yearly increase to 6.3%. Economists had expected only a 0.6% monthly gain. The PPI also showed a 0.5% increase after excluding food, energy, and trade services.

That information matters because Wall Street economists use the PPI alongside the consumer price index to estimate personal consumption expenditures inflation. A stronger PPI can therefore alter expectations for the Federal Reserve’s preferred inflation measure. In this case, the data helped lift forecasts for September core PCE inflation to 0.32%.

The 0.5% increase shows that price pressure remained after removing categories that can swing sharply. Food and energy are often volatile, while trade services can also distort the underlying signal. Excluding them helps reveal whether inflation is spreading across the broader economy rather than coming from one temporary shock.

Gasoline prices rose 20% in the month and were a major reason the overall PPI jumped 1.3%. But prices excluding food, energy, and trade services still increased 0.5%. That is a substantial gain in the remaining categories, even without gasoline’s direct effect.

The result made the inflation picture less benign for policymakers. It suggested that businesses were experiencing broader price increases, not simply passing through a fuel spike. That helped Wall Street economists forecast faster September core PCE inflation, at 0.32% monthly, and strengthened arguments for the Fed to keep moving interest rates higher.

Core personal consumption expenditures inflation measures changes in consumer prices while excluding food and energy. Removing those categories gives policymakers a steadier view of underlying inflation. The article identifies core PCE as the Federal Reserve’s preferred inflation indicator and says both core and headline PCE have remained above target since 2021.

For example, seven Wall Street estimates put September core PCE inflation at 0.32%, up from 0.25% in August. Economists built those estimates using the consumer price index and producer price index. A 0.32% monthly increase would lift yearly core PCE inflation to 3.1%, from 3.01%.

The Fed prefers PCE because it believes the measure more closely resembles how Americans actually spend money. PCE also changes its category weightings when consumers change their spending patterns. The CPI does not reflect those spending-weight changes in the same way, according to the article’s explanation.

Core PCE is the Federal Reserve’s preferred inflation gauge. If it rises faster than expected, policymakers may see less evidence that inflation is returning toward the Fed’s 2% target. The article says the Fed’s test for not hiking is confidence that inflation will return to 2% in a timely way.

The estimates provide a clear example. A 0.32% September increase, up from 0.25% in August, would raise year-over-year core inflation to 3.1%, from 3.01%. That would leave inflation well above target. The hotter PPI also showed a 0.5% rise excluding food, energy, and trade services.

Those figures could strengthen the case for another hike because higher rates are the Fed’s tool for restraining economic demand. Fed officials have said more increases may be needed, although they do not want to hurry. Futures showed a 29% chance of a hike this month and a 91% chance of at least one by December.

Higher interest rates typically slow inflation by reducing demand. Loans become more expensive, while saving earns more. Households may delay purchases financed with credit, and businesses may postpone investment or expansion. With less spending competing for goods, services, and workers, price increases can gradually lose momentum.

For example, a household facing higher borrowing costs might delay a large purchase. A business might cancel or defer a project because financing costs have risen. Those decisions reduce demand. The mechanism is not immediate, because existing contracts and spending plans can take time to change.

The article links this mechanism to the Fed’s concern about elevated inflation. A faster core PCE reading would suggest that price pressures remain strong, so officials could keep raising the policy rate. Fed futures showed only a 29% chance of a hike at the month-end meeting, but a 91% chance of at least one hike by December.

The article identifies 2% as the Federal Reserve’s inflation target but does not explain why that level was chosen. More generally, central banks use a modest, stable inflation goal to support predictable prices while allowing the economy to adjust without persistent deflation. The key issue here is the distance from that benchmark.

The article says a 0.32% monthly increase in September core PCE would lift its year-over-year rate to 3.1%, from 3.01% in August. That would place core inflation 1.1 percentage points above the 2% target. Both headline and core PCE inflation have been above target since 2021.

This gap matters because Fed Chairman Kevin Warsh suggested that confidence in a timely return to 2% is a test for deciding whether not to hike. Inflation has moved steadily higher since tariffs were introduced in April 2025 and accelerated after the beginning of the Iran war, according to the article.