U.S. inflation reaches 4% as gasoline prices climb sharply

Inflation climbed to 4% in May, the highest level the U.S. has recorded since early 2021, according to new data on the consumer price index.

Gasoline prices drove much of the monthly increase, accounting for more than 60% of the rise in the consumer price index during May. Energy costs more broadly remained elevated, contributing substantially to the overall inflation figure.

The surge followed geopolitical tension involving the U.S., Israel, and Iran, which pushed oil markets higher and rippled through gasoline prices at the pump. Energy sector volatility has historically influenced consumer inflation readings, as fuel costs affect both direct purchases and transportation-dependent goods and services.

The May reading marked a significant jump from previous months and represented the first time inflation exceeded 4% since the Federal Reserve began its aggressive interest rate hiking campaign in 2022. Policymakers have worked to bring inflation down from the elevated levels seen in 2021 and 2022, when prices rose sharply following pandemic-era supply disruptions and fiscal stimulus.