Key Takeaways:
Headline inflation is cooling for a second straight month, but the Fed's preferred gauge is barely budging — and that's the real threat to rate-cut hopes.
The Federal Reserve Bank of Cleveland's Inflation Nowcasting tool projects July headline CPI at 3.32%, down from June's 3.5% and May's 4.2% peak. That marks two consecutive monthly declines after the Iran-driven energy shock sent prices to a three-year high in May. But the relief may be short-lived: Core Personal Consumption Expenditures — the Fed's favored inflation measure — is estimated at 3.33% for June and is forecast to reaccelerate to 3.36% in July, according to the Cleveland Fed's model.
"The persistence of core inflation suggests the Iran-war price shock has spilled over into the broader economy and is about far more than just energy," said James Okafor, macro analyst at Edgen. "If core PCE stays above 3.3%, the Fed has no room to cut — and the market is not pricing that in."
June delivered a genuine surprise: CPI fell 0.4% month over month, the steepest monthly decline since May 2020, as peace talks between the U.S. and Iran sent crude oil prices plunging. Gasoline prices, which had surged 26.7% year over year, eased. Yet core CPI — which strips out volatile food and energy — came in at 2.6%, below the 2.8% consensus, suggesting the energy shock was masking broader disinflation. The problem is that core PCE, which uses a different methodology and weights services more heavily, tells a different story. At 3.4% in May, it was the highest since October 2023 and marked the 63rd consecutive reading above the Fed's 2% target.
Why Core PCE Matters More Than CPI
The divergence between headline CPI and core PCE is the central tension in the Fed's outlook. CPI captures out-of-pocket consumer costs, but PCE tracks what people and their employers actually spend — including employer-provided health insurance and government programs — making it a more comprehensive measure. The Fed's Federal Open Market Committee explicitly targets core PCE, not CPI. So while consumers see relief at the pump, the central bank sees an inflation problem that is not going away.
Fed Chair Kevin Warsh, who succeeded Jerome Powell and delivered his first congressional testimony on July 14, has taken a notably hawkish tone. "Inflation was a choice," Warsh told lawmakers, arguing the Fed must proactively bring prices under control. The last time core PCE was this sticky — above 3.3% for five consecutive years — the Fed was in the middle of the most aggressive tightening cycle in four decades. Warsh inherits a fed funds rate that has been held steady since the last adjustment, with markets pricing limited odds of cuts through year-end.
The AI Build-Out Adds a New Inflation Vector
Beyond energy, the Fed is increasingly focused on a less obvious driver: the artificial intelligence infrastructure build-out. Companies have announced more than $1.5 trillion in AI data center plans, Fed Governor Lisa Cook said this week, citing it as a primary inflation concern. New York Fed President John Williams echoed that view, saying surging AI investment demand has the central bank on guard.
The transmission is already visible. Apple raised prices on laptops and iPads by hundreds of dollars because of soaring memory chip costs driven by AI data center demand. Microsoft's Xbox consoles will rise $100 to $150 starting Aug. 1 for the same reason. Modern cars require hundreds of memory chips, meaning the AI build-out's inflationary footprint extends well beyond tech hardware.
If core PCE remains above 3.3% through the third quarter, the FOMC may have no choice but to consider rate hikes rather than cuts — a scenario that would upend the equity market's AI-driven rally. A substantial portion of the $1.5 trillion in announced data center investment is financed through debt, and higher borrowing costs would slow expansion while forcing investors to reassess the valuation premiums assigned to AI stocks and the broader market.
This article is for informational purposes only and does not constitute investment advice.
