Inflation accelerated in October as CPI rises 0.4%, pressuring the Fed

Consumer prices rose 0.4% in October, more than economists expected, complicating the Federal Reserve’s effort to bring inflation back to its 2% target, the Bureau of Labor Statistics reported.

Core inflation, which strips out volatile food and energy costs, increased 0.3% against the forecast for 0.2%. The headline index had risen 0.6% in September. Economists surveyed by Dow Jones had expected 0.3%.

The report landed at a critical moment for the Fed. Governor Christopher Waller, speaking in London before the data was released, said he would support a quarter-point rate increase in December even if inflation came in softer, and would push for a half-point hike if it came in higher. “Hiking only 25 basis points would put our credibility at risk,” Waller said.

After the release, traders fully priced in a quarter-point increase at the Fed’s Dec. 8-9 meeting and put the odds of a half-point hike at 13.6%, up from zero before the report, according to the CME Group’s FedWatch tool. The 10-year Treasury yield jumped. Stock futures drifted lower.

The bureau did not estimate a yearly inflation rate. The government shutdown in October 2025 prevented the BLS from collecting sufficient data, leaving no comparable figure for annual comparison. The report did include annual figures for individual items where data was available.

Energy costs rose 0.7% and gasoline was up 1%, despite falling prices at the pump in recent weeks. Natural gas fell 0.8%. Food costs accelerated 0.5%, pushed higher by increases of 1% for snacks and 0.9% for beef. Shelter costs rose 0.3%, accounting for more than 30% of the headline increase. Electricity prices rose 0.9%, a reflection of the power demands from AI data centers.

Transportation services jumped 0.8%. New vehicle prices increased 0.2% but used cars and trucks fell 1.2%. Airline fares accelerated 0.4%. Apparel, a tariff-sensitive sector, rose just 0.1%. Medical care commodities increased 0.5%.

“This was the report the market could least afford to see,” said Karen Manna, a fixed income strategist at Federated Hermes. “A hotter inflation print raises fresh questions about whether the Fed has done enough to contain price pressures.”

The Fed voted 10-2 at its October meeting to hold its benchmark rate in a range between 3.75% and 4%, CNBC reported. Governor Lisa Cook and Cleveland Fed President Beth Hammack dissented. Inflation has run above the Fed’s 2% target for more than five years.

The pressures are broad. A net 37% of businesses responding to the October National Federation of Independent Business survey said they plan to raise prices in the next three months, the highest level since July 2022. Retail sales rose 0.8% in September, the Commerce Department reported, meaning consumers are still spending even as prices climb.

Fed officials have expressed concern that the impacts from the Iran war and President Donald Trump’s tariffs are becoming embedded in the economy. The war has pushed up energy and transportation costs. The tariffs have raised the price of imported goods. And the AI buildout, which requires enormous electricity consumption, is showing up in utility bills.

Waller said the central bank needs to follow through on the rate hikes it has signaled or risk its credibility. “When this communication is clear and credible, what really matters is that those hikes are eventually carried out,” he said. “If, however, the hikes are not carried out, markets will reduce expectations of rate hikes and rates will immediately fall, which would loosen monetary policy in an undesirable way.”

Chicago Fed President Austan Goolsbee offered a more cautious note on Monday, saying the Fed has to be careful not to let the economy run too hot. “Because once it gets overheated, it’s extremely painful to get rid of that kind of overheating,” Goolsbee said.

The last CPI report before the December meeting will be the November reading, released in mid-December. If it comes in as hot as October, a half-point hike moves from possibility to probability. The Fed has not raised rates by a half point since 2023, when it was fighting the inflation surge that followed the pandemic. Rates went from near zero to above 5% in 18 months. They were cut to 3.5% in early 2026 as inflation appeared to cool. The October meeting was the first pause after a series of cuts, and the December meeting will likely be the first hike of a new cycle.

What I think

The Fed is going to raise rates in December. The only question is by how much. Waller’s speech was the most hawkish from a Fed official in months, and he is a governor, not a regional president, which means his vote counts at every meeting. The 13.6% odds of a half-point hike will climb as more officials speak.

The harder question is whether rate hikes can fix this. The inflation is not coming from excess demand. It is coming from tariffs, a war, and AI data centers. Higher rates can cool consumer spending, but they cannot lower tariff costs or energy prices. They can make borrowing more expensive for the companies building data centers, but those companies are funded by the largest tech firms in the world, which have hundreds of billions in cash. The Fed is trying to put out a fire with a hose, and the fire is not where the hose can reach.

The yearly rate gap is a problem. Without an October 2025 baseline, the BLS cannot tell us the annual inflation rate. That means the headline number that most people understand is missing. The monthly numbers tell the story, and the story is that prices are still rising faster than the Fed wants, and faster than the market expected.