Consumer prices rose at 3.7% annual rate in September as gas costs skyrocket

Consumer Prices Rose at 3.7% Annual Rate in September as Gas Costs Skyrocket

In September, the rising cost of living provided little relief, with consumer prices continuing to escalate and maintaining an inflation rate significantly above the Federal Reserve's target.

According to the Bureau of Labor Statistics, the consumer price index (CPI), a comprehensive measure of the costs associated with goods and services in the U.S. economy, experienced a seasonally adjusted increase of 0.6% for the month, resulting in a year-over-year inflation rate of 3.7%. This figure was slightly above the Dow Jones economists' expectations of 0.6% for the month and an annual increase of 3.6%.

Excluding the often-fluctuating food and energy prices, the core CPI showed a monthly increase of 0.3%, with an annual rise of 2.6%, surpassing the anticipated figures of 0.2% and 2.5%, respectively.

In August, the overall inflation rate was recorded at 3.4%, while the core inflation rate stood at 2.4%.

Energy Costs Drive Inflation Surge

The significant increase in energy prices was a major factor contributing to the ongoing inflation trend. The energy index surged by 5.2% amidst escalating tensions between the U.S. and Iran, a conflict that commenced in late February and is showing no immediate signs of resolution.

Gasoline prices surged by 9.1%, responsible for approximately half of the overall CPI increase, as indicated by the BLS. Over the past year, gasoline prices have increased by 34.2%, while fuel oil prices have rocketed by 74.2%.

Food prices remained stable for the month, experiencing an annual increase of 2.5%. However, shelter costs rose by 0.4%, and prices for used cars and trucks jumped by 0.7%.

Market and Fed Response

Following the announcement, stock market futures turned negative, and bond yields saw a significant rise. Futures traders increased the likelihood of a rate hike during the upcoming Federal Open Market Committee (FOMC) meeting scheduled for October 27-28 to approximately 44%, according to the CME Group's FedWatch tool. The probability of a rate hike before the end of the year has exceeded 96%, with nearly a 50% chance of a half-point increase.

This report represents the final CPI data that FOMC officials will review prior to their meeting. On Thursday, the BLS is expected to release the September statistics for the producer price index, which measures wholesale costs.

Broad-Based Inflation Concerns

Sonu Varghese, chief macro strategist at Carson Group, commented, "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. The only surprise is that investors keep getting surprised by broad-based inflation. And we've yet to see the full impact of higher diesel prices and the AI boom."

Since March 2021, inflation as measured by the CPI has surpassed the Federal Reserve's 2% target. Although the rates had been on a downward trend at the beginning of 2026, they experienced a notable spike following the military actions initiated by the U.S. and Israel against Iran.

Fed Policy Outlook

In response to these inflationary pressures, Federal Reserve officials approved their first interest rate increase in over three years during September, raising the benchmark funds rate by a quarter percentage point, thereby establishing a target range of 3.75%-4%. Predictions suggest that while the Fed may not implement an increase in October, another hike is likely in December.

Typically, the types of supply shocks responsible for the energy price spike are regarded as temporary, and policymakers often discount their effects when determining rate settings. However, Fed officials express concerns that an extended conflict could heighten the risk of these price increases permeating the broader economy, with potential repercussions on consumer and business expectations.

Recently, several key policymakers have conveyed the view that the Federal Reserve need not hasten to execute another rate increase. Nevertheless, the consensus indicates an expectation for another hike within this fiscal year, with market analysis suggesting the Fed could increase rates at least twice more in 2027.

While the Federal Reserve monitors the CPI along with various other metrics, they primarily rely on the Commerce Department's personal consumption expenditures price index for forecasting and policy-making. The PCE figures for September are set to be disclosed later this month.