Key facts
- US inflation accelerated in May, reaching its fastest pace in three years.
- The Consumer Price Index (CPI) rose 4.2% year-over-year in May.
- Energy prices, particularly gasoline, drove the inflation surge.
US inflation surged in May, reaching its fastest pace in three years due to a significant rise in energy prices. The Consumer Price Index increased 4.2% year-over-year, with gasoline prices up over a dollar from the previous year. These gains have eroded wage increases for consumers.

The acceleration of inflation, driven by energy prices, is eroding consumers' purchasing power and negating recent wage gains, potentially impacting consumer spending and economic growth.
Inflation in the United States accelerated in May, marking the fastest pace in three years, primarily driven by a significant increase in energy prices. The Bureau of Labor Statistics reported that the Consumer Price Index (CPI) rose 4.2% compared to a year earlier, a substantial jump from the 2.4% annual increase observed before the conflict with Iran began in February. On a monthly basis, overall prices increased by 0.5% in May.
Energy prices have been the main contributor to this inflationary trend, surging by 23.5% year-over-year. Consumers have directly felt this impact at the pump, with the average price of a gallon of gasoline reaching $4.24, more than a dollar higher than the previous year. This rapid price growth has effectively negated the wage increases Americans have received over the past twelve months. Adjusted for inflation, hourly earnings have fallen by 0.7% in the last year, returning to levels seen when President Trump took office. Additionally, depleted spring tax refunds and cuts to the federal Supplemental Nutrition Assistance Program are further straining household budgets, particularly for food.
Companies appear hesitant to pass these increased costs directly onto consumers, who are already facing wage stagnation and reduced benefits.