Quick answer
Consumer prices rose 4.0% in the 12 months to September 2026 (seasonally adjusted CPI-U), up from 3.7% the month before; prices rose 0.65% from the prior month, and core CPI (ex food and energy) was up 2.8% year over year.
CPI YoY4.0%
CPI MoM+0.65%
Core YoY2.8%
Core MoM+0.33%
What changed vs last month
Annual inflation moved from 3.7% to 4.0% (+0.3 percentage points). The index level rose from 334.131 to 336.298.
CPI-U, last 13 months (index 1982-84 = 100, seasonally adjusted)
| Month | Index | Monthly change | 12-month change |
|---|---|---|---|
| Sep 2026 | 336.298 | +0.65% | +4.0% |
| Aug 2026 | 334.131 | +0.40% | +3.7% |
| Jul 2026 | 332.813 | +0.07% | +3.5% |
| Jun 2026 | 332.568 | -0.42% | +3.7% |
| May 2026 | 333.979 | +0.47% | +4.3% |
| Apr 2026 | 332.407 | +0.64% | +3.9% |
| Mar 2026 | 330.293 | +0.87% | +3.3% |
| Feb 2026 | 327.460 | +0.27% | +2.7% |
| Jan 2026 | 326.588 | +0.17% | +2.8% |
| Dec 2025 | 326.031 | +0.30% | +3.0% |
| Nov 2025 | 325.063 | +0.25% | +3.0% |
| Sep 2025 | 324.245 | +0.30% | +3.0% |
| Aug 2025 | 323.291 | +0.35% | +2.9% |
Percent changes are computed from the published index levels; BLS headline figures use the same method on seasonally adjusted (monthly) and unadjusted (12-month) data, so the 12-month figure can differ by about 0.1 point from the BLS headline.
Sources
- FRED (St. Louis Fed): CPI-U all items, seasonally adjusted (BLS data) (observation September 2026, retrieved Oct 19, 2026)
- FRED: CPI-U less food and energy (BLS data) (observation September 2026)
- U.S. Bureau of Labor Statistics: Consumer Price Index (retrieved Oct 19, 2026)