A 0.6% month
The Consumer Price Index for All Urban Consumers rose 0.6% in September on a seasonally adjusted basis, the Bureau of Labor Statistics reported in its release of October 14, 2026, up from 0.4% in August. Over the 12 months through September the index was up 3.7%, against 3.4% in the year through August.
Analysts had expected the monthly figure to land at 0.6% but the annual rate to stop at 3.6%, according to Fox Business. Core inflation — the index stripped of food and energy, the two categories that swing hardest — rose 0.3% in the month and 2.6% over the year, in both cases a tenth of a point above forecasts.
Gasoline did most of the work
Energy prices rose 5.2% in September and 20.4% over 12 months. Gasoline alone was up 9.1% in the month and 34.2% over the year, and the BLS said gasoline accounted for more than half of the headline monthly increase.
Away from the pump the picture was calmer. Food was flat for the month and up 2.5% over the year, with groceries down 0.1% and restaurant meals up 0.2%. Electricity rose 0.2% in the month and 4.4% over the year. Housing, the heaviest single component of the index, rose 0.4% and 3.2%. Airline fares climbed 1.2% in the month and 22.4% over 12 months.
That split is what makes the number hard to read in one direction: a headline driven by fuel can reverse as fast as it arrived, while the 2.6% core rate is the part that tends to stay.
The Fed's October meeting
The Federal Reserve's policy target sits at 3.75% to 4%, after an increase that was its first since 2023. The Federal Open Market Committee meets next on October 27 and 28.
The September reading moved expectations sharply. On the CME FedWatch tool, the probability of the Fed holding rates steady fell from 77.9% to 58.5% after the release, while the odds of a quarter-point increase rose from 22.1% to 41.5%.
"Inflation is proving more persistent than many expected, particularly across services," said Adam Schickling, of Vanguard. Tim Urbanowicz, of Goldman Sachs Asset Management, said the figures put "the Fed's tactical breather priced into the market for October in question."
Markets
Stocks fell on the morning of the release. The Nasdaq dropped 1.42%, the S&P 500 fell 0.95% and the Dow Jones Industrial Average slipped 0.13%.
Reporting from the Bureau of Labor Statistics and Fox Business.
