Core PCE inflation expected to edge higher in May, keeping September Fed rate hike in play

The U.S. core Personal Consumption Expenditures (PCE) price index, the Federal Reserve’s preferred inflation gauge, is expected to show a modest uptick when May data is released later this week. Markets are increasingly pricing in the likelihood that the central bank will raise interest rates at its September meeting, as persistent price pressures complicate the path back to the Fed’s 2% target.

What the data is expected to show

Economists surveyed by major financial data providers forecast that the core PCE deflator, which excludes volatile food and energy prices, rose 0.3% month-over-month in May. On an annual basis, core PCE is expected to hold steady or edge slightly higher from the 2.8% reading recorded in April. The headline PCE index, which includes food and energy, is also anticipated to rise modestly, driven partly by firming energy costs.

The data arrives at a critical juncture for the Federal Reserve. After holding interest rates steady at its June meeting, the central bank signaled that it remains data-dependent and prepared to act if inflation does not continue to cool. The May PCE report will be one of the key inputs ahead of the Fed’s July and September policy decisions.

Market pricing and Fed expectations

Fed funds futures markets are currently pricing in a roughly 45% probability of a 25-basis-point rate hike at the September 2026 Federal Open Market Committee meeting, according to the CME FedWatch Tool. That probability has risen in recent weeks as a string of economic data, including stronger-than-expected retail sales and a resilient labor market, suggested that the economy is not cooling fast enough to bring inflation down sustainably.

Several Federal Reserve officials have recently reiterated that they need to see a sustained pattern of declining inflation before they can be confident that policy is sufficiently restrictive. A higher-than-expected May core PCE reading would reinforce the case for additional tightening.

Why this matters for consumers and markets

For households, a sustained elevated inflation reading means continued pressure on purchasing power, particularly for services such as rent, healthcare, and insurance. For financial markets, a September rate hike would extend the longest tightening cycle in decades, influencing borrowing costs for mortgages, credit cards, and corporate loans.

Bond yields have already moved higher in anticipation of the data, with the 2-year Treasury yield hovering near 4.8%. Equity markets have shown increased sensitivity to inflation surprises, as higher rates tend to compress valuations, particularly for growth and technology stocks.

Conclusion

The May core PCE inflation report will be a pivotal data point for the Federal Reserve’s next policy move. While the central bank has paused rate increases, a stubbornly high reading could tilt the balance toward a September hike. Investors and consumers alike will be watching closely for any signs that the disinflation trend has stalled or reversed.

FAQs

Q1: What is the core PCE price index?
The core PCE price index measures the change in prices of goods and services purchased by consumers, excluding food and energy. It is the Federal Reserve’s preferred inflation gauge because it adjusts for changes in consumer behavior and is less volatile than the Consumer Price Index.

Q2: Why does the Fed focus on PCE instead of CPI?
The Fed prefers the PCE index because it covers a broader range of expenditures, includes spending by both urban and rural consumers, and accounts for substitution effects when prices change. The Bureau of Economic Analysis produces it using data from the CPI and producer prices.

Q3: What would a September rate hike mean for the economy?
A rate hike in September would raise the federal funds rate, increasing short-term borrowing costs. This could slow economic growth further, reduce inflation pressure, but also raise unemployment. It would also affect mortgage rates, credit card interest, and business investment decisions.