The U.S. Consumer Price Index (CPI) surprised markets in June 2026 with the largest monthly decline since April 2020, down 0.4% against forecasts of a 0.1%–0.2% drop. The Bureau of Labor Statistics reported that annual inflation eased to 3.5%, below the 3.8%–3.9% consensus, marking a sharp deceleration from May’s 4.2% year‑over‑year pace.
Energy prices led the retreat, tumbling 5.7% for the month, with gasoline prices plummeting 9.7%. A short‑lived ceasefire between the U.S. and Iran had dampened fuel costs. However, that truce collapsed last week after attacks on commercial vessels in the Strait of Hormuz, prompting a renewed U.S. naval blockade and sending oil and gasoline prices higher again. The national average gasoline price already rose to $3.86 per gallon from $3.79 a week earlier.
Core inflation, which strips out volatile food and energy, was unchanged on a monthly basis, bringing the annual core rate down to 2.6% versus expectations of 2.8%. Food prices edged up 0.2%, with lettuce and fish among the contributors, while shelter costs posted their smallest monthly gain since early 2021.
The report landed as Federal Reserve Chairman Kevin Warsh testified before Congress. Futures markets tracked by CME FedWatch had assigned a 51.9% probability to a rate hike at the September meeting, but the softer data may moderate those bets. However, economists warn that renewed Iran tensions could quickly reverse the improvement. Navy Federal Credit Union chief economist Heather Long said the conflict will “almost certainly push inflation back up,” though the June numbers give the Fed room to wait.
U.S. stock futures jumped on the news—the S&P 500 by 0.2% and the Nasdaq 100 by 1%—reflecting immediate relief, but the sustainability of the trend remains in question.
