The energy shock triggered by the war in Iran is reviving inflation, but to a lesser extent than in 2022. May data supports this view. However, the situation still needs to be monitored closely. The U.S.-Iran Memorandum of Understanding provides some relief, yet many uncertainties remain. A return to normal conditions on the oil markets will take time, and the current easing of oil prices must prove durable. Inflation—driven by the lagged effects of tensions on oil, commodities and value chains—is expected to stay elevated for several more months. This will justify a more restrictive stance from central banks.
The assessment of the available data for May is rather positive. Granted, inflation keeps rising, but the contribution of the "energy" component remains dominant. Confidence enjoys a respite: business confidence in services and consumer confidence are sources of good news.
Business sentiment, which was on an upward trajectory before the shock, stayed resilient but signaled a faster input-price growth and longer delivery times, both directly linked to Middle East turmoil and coming on top of the issue of tariffs. Meanwhile, the outlook of households, which were already low on optimism has further deteriorated.
In May 2026, the average CPI inflation rate for the main emerging economies was broadly stable at 4.7% y/y after 4.8% in April. The shock is still contained compared to 2022 due to limited spillover to agricultural and food prices. Manufacturers’ opinion on the trend in input & output prices has stopped deteriorating but remains higher than in 2022.
Until the agreement extending the ceasefire (second half of June), European oil and gas prices had reacted more strongly to the energy shock caused by the war in the Middle East than they had to the shock that followed Russia’s invasion of Ukraine. This is no longer the case now that the prospects for a resumption of traffic through the strait of Hormuz are becoming more tangible.
