Consumer prices rose 4.2% annually in May 2026, marking the highest inflation rate in three years, according to the Consumer Price Index released by the Bureau of Labor Statistics on June 10. The gain exceeded April’s 3.8% year-over-year increase and represents the largest annual jump since April 2023, when inflation hit 4.9%.
The May reading comes as higher energy prices continue to fuel inflation across the economy. Energy costs have surged, with prices up 17.9% year-over-year in April according to the Joint Economic Committee, and economists expect energy to account for much of the latest CPI gain. The spike reflects disruptions from the Iran war, which has roiled global oil markets and pushed gasoline and diesel costs higher.
Core CPI, which excludes volatile food and energy prices, is forecast to have risen 2.9% year-over-year in May, up modestly from 2.8% in April, according to FactSet. While core inflation remains elevated, headline CPI’s acceleration is driven almost entirely by energy, according to economists surveyed by CBS News.
The ripple effects of energy costs extend beyond the pump. Mark Zandi, chief economist at Moody’s Analytics, told CBS News that higher fuel prices push up transportation costs across the supply chain. “It’s not just gasoline prices — it’s also diesel prices, which put upward pressure on prices for everything that’s put on a truck, from groceries to Amazon packages,” he said. “It’s now more expensive to fly as airlines have passed through the higher jet fuel costs.” Zandi attributed the latest leg up in inflation largely to government policy, including the Iran war, rather than supply disruptions.
Inflation has remained well above the Federal Reserve’s 2% target for nearly five years. The persistent elevation is wearing on consumer sentiment: three-quarters of Americans said their incomes aren’t keeping up with inflation, according to a recent CBS News poll. The May CPI data will likely prompt the Federal Reserve to reconsider its interest rate path, with financial markets increasingly pricing in the possibility of a rate hike by the end of 2026.
When inflation last reached 4.9% in April 2023, it marked the smallest 12-month increase since April 2021, following a period of aggressive Federal Reserve rate hikes that began in 2022. The climb back above 4% signals a setback in the Fed’s effort to bring inflation back to target, even as some recent energy prices have eased from their peaks.
Sources
- CNBC — Consumer prices rose 4.2% annually in May 2026, highest in three years; reported the core forecast and May release
- CBS News — Inflation forecast at 4.2%, highest since April 2023 at 4.9%; Mark Zandi commentary on energy cost ripple effects; consumer sentiment polling
- FactSet Insight — Median CPI forecast of 4.2% year-over-year for May; core CPI forecast of 2.9%
- Bureau of Labor Statistics — April 2026 CPI at 3.8% year-over-year, March at 3.3%; April 2023 CPI at 4.9%
- Joint Economic Committee — Energy inflation at 17.9% year-over-year in April 2026
- Trading Economics — May 2026 CPI at 4.2%, highest since April 2023
