US inflation hits 3.8% as energy costs spread beyond pump

US inflation hit 3.8% in April, the fastest since 2023, as the Iran conflict pushed gasoline above $4 a gallon and costs bled into housing.

US inflation accelerated to 3.8% in April, the fastest pace since May 2023, as the Iran conflict-driven surge in gasoline prices spread into housing, utilities and broader consumer categories.

"The concern is no longer just about gas prices — it's about whether higher energy costs are embedding themselves into the broader inflation picture," said D. Brian Blank, associate professor of finance at Mississippi State University.

The Personal Consumption Expenditures Index rose 3.8% from a year earlier, up from 2.8% in February and 3.5% in March, the Commerce Department reported May 28. Core PCE, which excludes food and energy, climbed 3.3%, showing that underlying price pressures are broadening. Gasoline averaged $4.42 a gallon, a 48% jump since the war began Feb. 28, while airline fares rose more than 20% and grocery prices posted their largest monthly gain since 2022. Housing and utilities also contributed to the increase, with shelter costs rising 4.2% year over year. Income growth weakened, with personal income rising 0.3% in April, below the 0.5% gain in March, according to the same report.

The data confronts new Federal Reserve Chair Kevin Warsh with a difficult choice before his first policy meeting June 16-17: hold rates at 3.5% to 3.75% and risk entrenched inflation, or raise borrowing costs and further squeeze consumers whose savings rate has already fallen to 2.6%, the lowest since 2022.

Energy's Spillover Into the Broader Economy

The transmission mechanism is straightforward but its consequences are far-reaching. Higher gasoline costs directly raise shipping, airline and utility expenses, which businesses then pass on to consumers. April's Consumer Price Index showed energy prices up 18% year over year, with tariff-sensitive categories like apparel and household furnishings still climbing. The last time headline PCE exceeded 3.5%, in September 2023, the S&P 500 fell 4.9% over the following two months as the Fed maintained its tightening stance. The current episode carries greater risk because the supply shock originates from a geopolitical closure of the Strait of Hormuz, a chokepoint handling about one-fifth of global oil supply — a factor beyond the Fed's control. Unlike the 2023 episode, when inflation was cooling from its 2022 peak, the current acceleration comes after inflation had already receded to 2.8% in February, making the reversal more jarring for policymakers.

Warsh's First Test

Warsh, sworn in as Fed chair days before the data release, has expressed skepticism about the PCE gauge's accuracy while facing pressure from President Donald Trump to cut rates. Yet markets are pricing a more than one-in-three chance of a quarter-point rate increase by year-end, according to the CME FedWatch Tool — a sharp reversal from before the Middle East conflict, when odds of a hike were negligible. Long-term Treasury yields have reached their highest levels since 2007, tightening financial conditions even without a formal rate hike. Those higher yields directly influence mortgage rates, business borrowing costs and the value of retirement portfolios, meaning inflation concerns are already affecting the real economy. The 10-year Treasury yield has climbed more than 80 basis points since the war began, according to data from the Federal Reserve.

The Fed's dual mandate creates a bind: raising rates to combat inflation would do nothing to reopen the Strait of Hormuz or increase global oil supplies, but failing to act could allow inflation expectations to become unanchored. If consumers begin expecting persistently higher prices, wage demands could accelerate, creating a self-reinforcing cycle that would require even more aggressive tightening later. The savings rate at 2.6% suggests households are already strained, leaving less room for the consumer spending that drives about two-thirds of US economic activity. Meanwhile, AI-related investment is helping sustain business optimism and infrastructure spending, creating a divided economy where consumers struggle with higher prices while corporate capital expenditure remains resilient. The divergence between household sentiment and corporate investment will be a key factor in determining whether the economy can avoid a recession while the Fed navigates this inflation challenge.

This article is for informational purposes only and does not constitute investment advice.