IMF Warns of Global Recession Risk as Iran War Escalation Threatens Economic Stability

The International Monetary Fund (IMF) has issued a stark warning that a further escalation in the Iran war could lead to a global recession, spiralling inflation, and a sharp backlash in financial markets. The Washington-based fund cited the economic damage from the Middle East conflict as steadily rising, prompting it to cut its growth forecasts for 2026.

In its half-yearly update, the IMF predicted that the UK would suffer the sharpest growth downgrade and joint highest inflation rate in the G7 this year. Even if the fallout from soaring energy costs can be contained by the middle of 2026, the fund warned of a close call for a global recession under a worst-case 'severe scenario'.

This severe scenario, involving a drawn-out war and persistently higher energy prices, would see the world face a global recession for only the fifth time since 1980. Oil prices jumped back above $100 (£74) a barrel on Monday amid choppy trading in global markets. The IMF's chief economist, Pierre-Olivier Gourinchas, noted that despite a temporary ceasefire, some damage is already done, and downside risks remain elevated.

The IMF set out three possible scenarios for the war in its World Economic Outlook (WEO), including a central 'reference forecast' based on the assumption that disruption to the world economy from the war fades by mid-2026. This forecast predicts global growth would fall from 3.4% last year to 3.1% in 2026, a downgrade of 0.1 percentage points.

Under the adverse scenario, with the global oil price remaining at $100 this year before falling back to $75 in 2027, growth would fall to 2.5% this year, and inflation would rise to 5.4%. In the severe scenario, with a lengthier, intensive war keeping the oil price above $110 into 2027, global growth would collapse to about 2%, a threshold widely seen as equivalent to a worldwide recession.

The IMF urged countries to stage a coordinated response to the economic fallout from the war and called on central banks to remain vigilant. It also advised governments to focus on temporary and targeted measures to support businesses and households.