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Inflation

Core CPI

CPI excluding food and energy — the market's preferred read on underlying consumer inflation in the CPI report.

High impact

Next Core CPI release

8:30 a.m. ETin 4 days

Data for September 2026

Published in the same BLS Consumer Price Index release as Consumer Price Index.

After that

Source: BLS CPI release schedule ↗ · checked Oct 10, 2026. Agencies can reschedule; confirm before trading.

Frequency
Monthly (part of the CPI release)
Release time
8:30 a.m. ET
Typical timing
Same release as headline CPI Official schedule ↗

What Core CPI measures

Core CPI is the Consumer Price Index for all items less food and energy. It is published in the same BLS release as headline CPI.

Excluding volatile categories gives a steadier view of trend inflation. Traders tend to focus on the seasonally adjusted month-over-month change, often to two decimal places, because small differences compound into a meaningful annualized rate.

Why traders watch it

Because headline inflation can swing with gasoline and food prices, the Fed and markets lean on core measures to judge whether inflation is moving sustainably toward target.

A 0.1 percentage-point surprise in monthly core CPI is roughly a 1.2-point difference in annualized terms, which is why seemingly small misses can move rates markets.

What to look at in the release

Core goodsVehicles, apparel, household goods; sensitive to supply chains and tariffs
Core servicesShelter, medical care, transportation services, insurance
SupercoreCore services excluding shelter; an informal but widely watched measure

How markets tend to interpret it

Relative to consensus expectations — not the absolute level.

Stronger / hotter than expected

A firmer core reading can signal that inflation is more persistent, which has tended to push expected policy rates and short-term yields higher.

Weaker / cooler than expected

A softer core reading can support expectations of easier policy, often pulling yields lower.

Context matters. Markets weigh the composition — a surprise driven by a volatile item such as airfares may be discounted relative to one driven by services broadly.

Historical data

Core CPI (less food & energy), year-over-year

% y/y · last 10 years

2.4% y/y
Latest: Aug 1, 2026
Historical · FRED
123456720172018201920202021202220232024202520262.4
Source: BLS via FRED (CPILFESL) · transformed by PWS Markets · updated on a daily refresh schedule
Show recent data
DateValue (% y/y)
Aug 1, 20262.4
Jul 1, 20262.5
Jun 1, 20262.6
May 1, 20262.8
Apr 1, 20262.7
Mar 1, 20262.6
Feb 1, 20262.5
Jan 1, 20262.5
Dec 1, 20252.6
Nov 1, 20252.6
Sep 1, 20253.0
Aug 1, 20253.1
Core CPI, month-over-month

% m/m · last 33 observations

0.29% m/m
Latest: Aug 1, 2026
Historical · FRED
-0.10.00.10.20.30.40.52024202520260.29
Source: BLS via FRED (CPILFESL) · transformed by PWS Markets · updated on a daily refresh schedule
Show recent data
DateValue (% m/m)
Aug 1, 20260.29
Jul 1, 20260.22
Jun 1, 2026-0.02
May 1, 20260.21
Apr 1, 20260.38
Mar 1, 20260.20
Feb 1, 20260.22
Jan 1, 20260.30
Dec 1, 20250.23
Nov 1, 20250.19
Sep 1, 20250.22
Aug 1, 20250.31

Markets that watch Core CPI

Each note explains the channel for that market; reactions are tendencies, not rules.

MarketWhy it can matter
US 10YPersistent core inflation, especially in services, bears on how long rates stay restrictive and on longer-run inflation expectations — both of which are embedded in the 10-year rather than just the next few Fed meetings.

Core CPI FAQ

Why does core CPI exclude food and energy?

Food and energy prices are volatile and often driven by supply shocks that monetary policy cannot address directly. Excluding them helps identify the underlying trend.

Is core CPI more important than headline?

For policy expectations, traders usually give core more weight. Headline still matters for consumers and for inflation expectations, especially when energy prices move sharply.