Inflation accelerates to 4.0% in Sep '26
Sep '26 dataHeadline CPI-U rose +4.00% over the twelve months to Sep '26, up +0.31 pts from the prior month's +3.69% — prices are climbing faster than they were a month ago. The index itself stood at 336.9, a +0.57% move on the month.
Core CPI, which leaves out food and energy, ran at +2.82% and picked up from the month before. It sits 1.18 points below the headline rate, which points to food and energy pushing the headline number up.
The fastest annual increases came from Energy +20.59%, Transportation +8.01%, Apparel +6.10%. The softest category was Medical care at +1.67%. Housing carries roughly 44.9% of the basket, so its reading moves the headline number more than any other component.
A year earlier the same measure read +2.92%, so annual inflation is +1.08 pts higher than twelve months ago.