Will the same causes produce the same effects? In other words, will the war in Iran and the resulting surge in oil and gas prices lead to an inflationary shock comparable to that seen in 2022? Will their negative effects on growth be the same as those for the war in Ukraine and the subsequent energy shock? Although there are similarities, there are many uncertainties.
The assessment of the available data for April is more negative than in March. Inflation rose by 1.1 percentage points in two months, an increase that is however still solely driven by the "energy" component. Excluding energy as well as excluding “energy and food," inflation recorded a new slight decline in April. However inflationary pressures are mounting, through rising input prices and — new development in April — the beginning of an increase in output prices according to PMIs surveys.
CPI inflation recorded its largest monthly increase since 2022 in March, before reaching 3.8% y/y in April (+1.4pp in two months and a highest since 2023) – almost entirely on the back of gasoline prices, with the non-energy index edging up only moderately.
In April 2026, the inflationary impact of the oil price shock is spreading as the average CPI inflation rate for the main emerging economies reached 4.8% year-on-year, compared with 3.9% in February. The shock is still contained compared to 2022 due to limited spillover to agricultural and food prices. However, manufacturers’ opinion on the trend in input & output prices have deteriorated significantly. The contagion of oil and gas prices to fertiliser and oil-derived input prices is being felt more acutely.
The growing loss of barrels available on the market due to the closure of the Strait of Hormuz, repeated attacks on production capacity in the Gulf, and restrictions on traffic through the Strait increase the risk of a physical oil shortage in the short term. This has led to a sharp reaction in the prices of physical barrels (dated Brent). In recent weeks, better pricing of this risk of shortage has caused the prices of futures (Brent) to converge with that of the physical barrel (dated Brent). Furthermore, the sharp rise in oil exports from the United States and, to a lesser extent, the decline in Chinese imports have eased tensions in the physical market and pushed prices lower.
