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Consumer prices rose 3.7 percent over the year in September, a sharper acceleration than economists had forecast and a reading that immediately raised the probability of another Federal Reserve interest rate increase this month. The Consumer Price Index for All Urban Consumers climbed 0.6 percent on a seasonally adjusted basis for the month, the Bureau of Labor Statistics reported.
The annual increase marks a notable jump from the 3.4-percent rate recorded for the 12 months ending in August, the Bureau of Labor Statistics said. Economists surveyed in a Dow Jones consensus poll had expected gains of 0.6 percent monthly and 3.6 percent annually, meaning the actual figures came in hotter than Wall Street anticipated.
Gas Prices Drive the Surge
Gasoline was the single biggest contributor to September’s spike. The gasoline index rose 9.1 percent during the month, accounting for over half of the overall increase in the all-items measure, the Bureau of Labor Statistics said. That surge helped push the broader energy index up 5.2 percent over the month, following a 2.1-percent increase in August.
Shelter costs, which have been a persistent driver of inflation for years, also continued climbing. The shelter index rose 0.4 percent in September after a 0.3-percent rise in August, according to the Bureau of Labor Statistics.
Stripping out volatile food and energy categories, core CPI still rose 0.3 percent in September and was up 2.6 percent over the year, the Bureau of Labor Statistics reported. That core figure suggests the inflation pressures extended well beyond the pump. A chief macro strategist at an investment firm said, “CPI came in hot and it wasn’t just fuel prices, as core inflation ran at a 3.7% annualized pace in September and 3.2% over three years.”
Markets Brace for More Fed Action
The hotter-than-expected data sent ripples through financial markets within minutes of the release. Stock market futures turned negative while bond yields jumped sharply higher, according to market reporting on the release. The Nasdaq 100 dropped 1.5 percent, and the dollar climbed to its highest level since May 2025 amid the inflation-driven reaction, according to market reporting on the selloff.
The broad upswing in consumer prices reinforced expectations for rate hikes in the months ahead even if the Fed decides to pause at its upcoming meeting, extending a decline in the S&P 500 that had already been under pressure this week amid a renewed selloff in chipmakers, according to market reporting.
Futures traders quickly repriced the odds of central bank action. Data from the CME Group’s FedWatch tool showed the probability of a rate hike at the Federal Open Market Committee’s next meeting, scheduled for October 27-28, rose to about 54 percent. The odds of a rate increase before year-end climbed even higher, to better than 96 percent, according to the same data.
A Fed Already in Hiking Mode
This is not the central bank’s first move in response to persistent price pressures. In mid-September, the Federal Reserve raised interest rates for the first time in three years, stating in its policy statement that inflation remains elevated and that the hike would support a timelier return to the Committee’s 2 percent goal, the Fed said at the time. September’s CPI data suggests that goal remains distant, with the annual rate now running nearly double the central bank’s target.
The acceleration in prices carries consequences well beyond trading floors and policy meetings. Consumer prices advanced in September at the fastest pace in five months, keeping the squeeze on household budgets ahead of November’s midterm elections, according to financial market reporting based on the Bureau of Labor Statistics data. Rising gasoline and shelter costs hit households directly, eating into disposable income at a moment when voters are weighing economic conditions heavily.
What Comes Next
For now, attention shifts to the Fed’s late-October meeting, where policymakers will have to weigh the risk of further fueling inflation against the risk of tightening credit conditions too aggressively in an economy still absorbing September’s price shocks. The jump in bond yields suggests investors are already positioning for tighter monetary policy, regardless of what the Fed ultimately decides on October 27-28.
Key figures from the September report:
- All-items CPI: up 0.6 percent monthly, 3.7 percent annually
- Core CPI (excluding food and energy): up 0.3 percent monthly, 2.6 percent annually
- Gasoline index: up 9.1 percent monthly
- Energy index: up 5.2 percent monthly
- Shelter index: up 0.4 percent monthly
Whether the Fed pauses or hikes again this month, the September numbers have already reshaped market expectations and added fresh urgency to the inflation debate just weeks before voters head to the polls. With gasoline prices driving more than half of the monthly increase and core inflation still running well above target, pressure on the central bank to act is unlikely to ease soon. Households, meanwhile, are left absorbing higher costs at the pump and in rent, with little immediate relief in sight according to the data released this week.
