U.S. September CPI Preview: Energy Lifts Headline, Core Expected to Slow, October Rate Hike Probability Drops to 20%
nashnova research
The U.S. September CPI report is due this week — headline inflation is expected to jump to 3.6% on gasoline prices, but core CPI is set to slow to 0.2% month-on-month; Fed officials have collectively signaled patience, and the implied probability of an October hike has plunged from 70% to roughly 20%.
What should we actually watch in this CPI report?
The market consensus calls for headline CPI at +0.6% month-on-month, with the annual rate rising from 3.4% to 3.6% — driven almost entirely by gasoline prices.
Core CPI — which strips out food and energy — is expected to slow to +0.2% month-on-month (down from 0.3%), with the annual rate ticking up slightly to 2.5%.
This means → the headline number will look "hot," but peel away energy and price pressures are actually easing. The Fed cares far more about the core reading.
Why did October hike odds crash from 70% to 20% in a single week?
September nonfarm payrolls added just 29,000 jobs; wage growth fell to 3.0%, the lowest since May 2021 — the labor market is cooling faster than expected.
New York Fed President Williams and Vice Chair Jefferson both said there is "time to assess data"; Governor Bowman sees "no need to rush"; Governor Waller supports further hikes but opposes moving at consecutive meetings.
In plain terms = four officials hit the brakes at once, and the jobs data backed them up. The signal is clear: October is very likely a hold. December hike odds remain around 72%.
In Goldman's item-level forecast, what prices are rising?
Used cars are expected to climb 0.5%, new cars 0.2%, and auto insurance 0.2% — premiums are rebounding after spring discounting ended.
Airfares are forecast to jump 3.0% month-on-month because jet-fuel prices have roughly doubled since the Iran conflict began, and airlines are passing through the full cost.
This means → airfares are the primary channel through which an energy shock feeds into core inflation — when oil rises, your plane ticket rises first.
Shelter inflation is slowing — why does that matter most?
Owners' equivalent rent (OER) — a measure of the implied rent on owner-occupied housing — is expected to rise just 0.20% month-on-month; rent itself up 0.17%, extending its slowdown.
OER carries roughly one-third of core CPI's weight. In plain terms = this single line item can decide whether core inflation goes up or down.
This reflects the housing market gradually releasing pent-up cooling signals — exactly the "good news" the Fed has been waiting for.
What does Goldman expect for the months ahead?
Goldman forecasts September core CPI at +0.24% month-on-month, slightly above the consensus 0.22%; that maps to a core PCE — the Fed's preferred inflation gauge — of roughly +0.20%, due October 29.
October core CPI is projected at about 0.2% (distorted by seasonal quirks from last year's government shutdown, when the BLS missed some data collection), falling to roughly 0.1% in November and December as shelter inflation keeps slowing and tariff effects fade.
This means → Goldman's 2027 inflation outlook is more dovish than the consensus, but the bank flags a clear upside risk: if the oil-price shock keeps spreading, all bets shift higher.
What are the next key dates to watch?
Thursday: PPI data — headline expected at +0.5% month-on-month, core at +0.3%. Analysts will use PPI details to refine their September core PCE estimates.
Friday: Fed Chair Wosh speaks at the IMF meeting in Bangkok. Markets will parse every word on "patience" to judge whether the year-end hike path narrows further.
In plain terms = CPI is the first shot this week, but PPI and the Chair's speech are the two that will actually set the market's direction.
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