The latest U.S. inflation data for October revealed a significant cooling in energy prices, yet underlying price pressures showed no signs of abating. According to the Bureau of Labor Statistics, the headline Consumer Price Index (CPI) increased by 0.4% on a seasonally adjusted basis, a slight deceleration from September's 0.6% gain. The slowdown was primarily driven by a sharp easing in energy costs, which rose just 0.7% in October compared to a 5.2% surge the previous month—a relative decline of roughly 87%.
However, the core CPI, which excludes volatile food and energy categories, remained unchanged at 0.3% for the third consecutive month. This persistence in underlying inflation is likely to factor into the Federal Reserve's deliberations at its upcoming December policy meeting. Governor Christopher Waller, speaking in London before the data release, indicated that monthly core inflation readings around 0.3% or higher could justify a more aggressive policy response, potentially including a half-percentage-point rate hike.
The energy sector's slowdown was led by gasoline prices, which rose a modest 1.0% in October after a 9.1% jump in September. Notably, the unadjusted gasoline index actually fell 0.7% last month, illustrating the impact of seasonal adjustments. Other energy components showed mixed trends: electricity prices accelerated to 0.9% from 0.2%, while piped natural gas declined 0.8% following a 0.3% drop in September. The broader energy services index rose 0.6%, up from 0.1% previously.
Food prices, which had been relatively stable, reversed course in October. Grocery prices climbed 0.4%, rebounding from a 0.1% decline in September, while overall food costs increased 0.5%. Within grocery categories, fruits and vegetables and dairy both rose 0.6%, whereas nonalcoholic beverages slipped 0.3%. These variations highlight that individual shopping baskets may experience different inflation rates than the national average.
Shelter costs, a significant component of core inflation, eased slightly to 0.3% from 0.4% but continued to exert substantial upward pressure, contributing over 30% to the overall monthly increase. On the other hand, used vehicle prices fell 1.2% after a 0.7% rise in September, providing some offset. This divergence within core goods and services suggests that inflation is becoming more broad-based, with some categories decelerating while others remain firm.
The data came in slightly higher than market expectations, with both headline and core inflation exceeding forecasts by 0.1 percentage point. Initial market reactions included a decline in U.S. equities and a rise in Treasury yields, reflecting concerns that the Fed may need to maintain its restrictive stance for longer.
Looking ahead, the Fed's next policy meeting is scheduled for December 8-9, with the next CPI report due on December 10—one day after the decision. This timing means policymakers will have to rely on the current data and other indicators to gauge the inflation trajectory. Additionally, annual comparisons for most October CPI series are unavailable due to the government funding lapse in October 2025, which prevented data collection.
While the sharp slowdown in energy inflation is welcome news, the stickiness of core prices suggests that the fight against inflation is far from over. The Federal Reserve will likely continue to monitor these trends closely as it navigates its path toward price stability without derailing economic growth.
