Energy Prices to Fall in CPI as Inflation Cools to 3.5%

Energy prices are expected to pull headline inflation lower in the upcoming CPI report, with the Federal Reserve Bank of Cleveland's nowcast projecting the annual rate to ease to 3.22 percent in August from 3.5 percent in June.

The Cleveland Fed's Inflation Nowcasting tool forecasts headline CPI to decline steadily through August, while core PCE — the Fed's preferred inflation gauge — is projected to remain elevated at 3.36 percent, according to the latest nowcast data.

The divergence stems from the Iran war's shifting transmission channels. After the Strait of Hormuz closure halted roughly 20 million barrels of petroleum liquids daily — a fifth of global demand — crude prices surged more than 70 percent within weeks, pushing trailing 12-month inflation from 2.4 percent in February to a three-year high of 4.2 percent in May. June's reading cooled to 3.5 percent as crude eased on peace-talk hopes, but core PCE reached 3.4 percent in May, its highest level since October 2023.

The persistence of core inflation presents a policy dilemma for the Federal Open Market Committee. If core measures remain above 3 percent while headline cools, the Fed may be forced to hold rates higher for longer — or even tighten — raising borrowing costs for companies funding the AI infrastructure build-out and threatening the S&P 500's historic rally.

Beyond Energy — Core Inflation's New Drivers

The Iran war's inflationary footprint now extends well beyond the pump. Businesses are rerouting shipping lanes, switching suppliers, and shifting transportation modes — from maritime to air, rail, or truck — with higher logistics costs passed through to consumers. Fertilizer shortages loom as roughly a third of global fertilizer transits the Strait of Hormuz; reduced crop yields would push supermarket prices higher. Petroleum-based products, including synthetic polymers and plastics, have surged in cost. Helium production disruptions — Qatar supplies more than a third of the world's refined helium — are hitting chip fabricators that depend on the gas for cooling and purging in semiconductor manufacturing.

Unlike energy supply disruptions, which can reverse quickly once shipping lanes reopen, these secondary effects tend to be longer-lasting. Fuel prices rise like a rocket when supply chains break and fall like a feather when they heal, but supply-chain reconfiguration, input cost pass-through, and production bottlenecks persist well after the immediate shock subsides. This suggests the disinflationary impulse from falling crude prices may be partially offset by these broader cost pressures.

Fed's Rate Path Hangs in the Balance

The last time core PCE exceeded 3.4 percent was October 2023, when the Fed had just held rates at a 22-year high. The current trajectory suggests the FOMC cannot rely on energy disinflation alone to restore price stability. The committee's dual mandate faces a genuine tension: headline inflation is trending toward target while core measures remain more than a full percentage point above the Fed's 2 percent goal.

If the Fed is forced to raise rates to combat entrenched core inflation, the cost of capital for AI infrastructure projects — largely debt-funded — would rise, forcing a rerating of premium tech valuations that have driven the Dow Jones Industrial Average, S&P 500, and Nasdaq Composite to record levels. The S&P 500 has rallied 70 percent during Trump's first term and continued its advance in the second, with AI serving as the primary driver. A rate hike would directly threaten that trajectory.

President Trump has insisted inflation will plunge once the Iran war ends, but the evidence from core PCE suggests otherwise. The evolution of war-driven inflation into broader supply-chain and input-cost pressures means the Fed's path to 2 percent inflation is longer and more uncertain than headline numbers suggest. Markets will be watching Wednesday's CPI release for confirmation — or contradiction — of the Cleveland Fed's nowcast.

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