FX.co ★ US Core CPI Inflation Ticks Up to 2.6% YoY in September, Ending Recent Cooling Trend

The United States’ Core Consumer Price Index (CPI) rose 2.6% year-over-year in September 2026, up from 2.4% in August, according to data updated on 14 October 2026. The figure marks a slight re-acceleration in underlying inflation pressures after a previous slowdown.

Measured on a year-over-year basis, the latest reading compares the price change in September 2026 to the same month a year earlier, while the August figure reflected the annual change versus August 2025. The September uptick suggests that, after a period of easing, core inflation—stripping out volatile food and energy components—has gained modest momentum.

The move from 2.4% to 2.6% will likely attract attention from investors and policymakers watching for signs of whether disinflation is stalling or merely pausing, as the US economy continues to adjust to tighter financial conditions and prior price shocks.