Headline inflation across OECD economies eased to 4.2% in June 2026 from 4.6% in May, ending three straight monthly increases. The measure tracks annual changes in consumer prices across the group’s member countries. Inflation declined in 20 economies, increased in six and remained stable or broadly stable in 12. Nine OECD countries recorded inflation at or below 2%, including three where the rate stood below 1%. Energy prices drove much of the monthly easing. OECD energy inflation fell four percentage points to 11.7% year on year, after reaching 15.8% in May. The rate declined in 24 of the 37 countries with available data.