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The resilience of the global economy is being tested by the evolving conflict in the Middle East, which has generated new inflationary pressures while creating significant uncertainty, according to the OECD’s latest Interim Economic Outlook.
Global growth was steady heading into 2026, supported by the strength of technology-related production, lower effective tariffs on US imports and the momentum carried over from 2025. The energy supply shock following the onset of the conflict in the Middle East is expected to significantly weigh on global growth while putting new upward pressure on inflation.
As a result of these developments, the Outlook projects global growth of 2.9% in 2026 and 3.0% in 2027. The evolution of the conflict in the Middle East is highly uncertain and poses considerable risks to these baseline projections. A more long-lasting disruption, with energy prices remaining elevated beyond mid-2026, would further reduce growth prospects.
GDP growth in the United States is projected at 2.0% in 2026, before moderating to 1.7% in 2027. In the euro area, growth is projected to be 0.8% in 2026 and 1.2% in 2027. China’s growth is projected to slow to 4.4% in 2026 and 4.3% in 2027.
Inflation pressures will persist for a longer period, with inflation now expected to be higher in 2026 than previously projected, reflecting the surge in global energy prices. Headline inflation in G20 countries is projected to be 4.0% in 2026, easing to 2.7% in 2027.
“The energy supply shock from the evolving conflict in the Middle East is testing the resilience of the global economy. We project global growth will remain robust, but it will be slower than the pre-conflict trajectory, with significantly higher inflation,” OECD Secretary-General Mathias Cormann said. “Any policy measures adopted to cushion the impact of the energy price shock should be targeted towards those most in need, temporary, and ensure incentives to save energy are preserved. Increasing renewable energy generation and energy efficiency can enhance economic security while boosting resilience to future price shocks.”
The Outlook highlights a range of risks. The expected decline in future energy prices is based on assumptions that current disruptions to supply will ease over time, and be limited in 2027. Longer-lasting closure of oil and gas production facilities in the region or persistent disruptions to exports through the Strait of Hormuz would likely have more significant adverse consequences on energy prices, inflation expectations and future growth.
The Outlook points out that higher energy and fertiliser prices could spur increases in food prices, particularly affecting vulnerable households. Higher energy prices could also increase the cost for European countries carrying out necessary annual replenishing of natural gas stocks. Financial markets may experience additional volatility while rising long-term sovereign yields increase fiscal risks.
Given these challenges, the Outlook highlights key priorities for policymakers. Central banks should remain vigilant and ensure expectations are well-anchored. Stronger efforts are needed to safeguard the sustainability of public finances. Any measures to cushion the economic impact of the energy shock will need to be targeted, temporary and take into account limited fiscal space facing most governments. Lowering trade barriers would boost output and reduce inflationary risks. Over the medium term, improving energy efficiency and reducing dependency on fossil fuel imports can lower exposure to future supply shocks.
For the full report and more information, consult the Interim Economic Outlook online. Media queries should be directed to the OECD Media Office (+33 1 45 24 97 00).
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