Iran crisis: A war premium the world economy can't afford

The escalating conflict involving Iran is fast morphing into a macroeconomic shock that the global economy — already on a fragile recovery path — may struggle to absorb. The International Monetary Fund has warned that even a short-lived disruption could leave lasting scars on growth, inflation, and public finances.

In its latest World Economic Outlook framework, the IMF has modelled multiple scenarios around the crisis — and none offer much comfort. Even under a baseline assumption of a contained conflict and a relatively moderate 19 per cent rise in energy commodity prices, global growth is projected at just 3.1 per cent in 2026, while headline inflation remains elevated at 4.4 per cent.

That marks a reversal from the disinflation trend seen over the past year, underscoring how quickly geopolitical shocks can reprice the global economy. What was expected to be a gradual stabilisation now risks slipping into renewed volatility.

Stagflation risks back in focus

The downside risks, however, are where the real concern lies. In an adverse scenario, the IMF sees global growth slipping to 2.5 per cent, with inflation climbing to 5.4 per cent.

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A more severe escalation — featuring prolonged supply disruptions and tighter financial conditions — could push growth down to 2 per cent, a level often associated with near-recession conditions, while inflation rises above 6 per cent. The combination raises the spectre of stagflation, a policy nightmare for central banks already grappling with uneven recoveries.

Oil shock at the centre of the crisis

At the heart of the shock is energy. Oil markets have reacted sharply, with supply concerns intensifying amid fears of disruptions in critical transit routes and a sharp fall in Iranian exports.

Analysts estimate that global oil inventories could shrink significantly even if tensions ease, suggesting the so-called “war premium” in crude prices may persist longer than markets initially expected. Historical analysis of past geopolitical crises shows such shocks tend to leave a durable imprint, with prices typically remaining about 2.5 per cent higher even three years after the initial disruption.

India and other importers feel the heat

For large energy importers such as India, the impact is already visible. India’s crude basket surged from $69 per barrel in February 2026 to $113 in March — a steep 64 per cent increase in just one month.

The spike threatens to feed directly into imported inflation, widen the current account deficit, and complicate fiscal management at a time when policymakers are trying to sustain growth without reigniting price pressures.

Inflation spreads across sectors

The transmission channels extend well beyond oil. Higher energy costs are feeding into fertiliser, transport, and manufacturing expenses, raising the risk of second-round inflation effects across food and industrial supply chains.

The IMF has characterised the shock as a “textbook negative supply shock”— one that simultaneously slows growth while pushing up prices, precisely the kind of scenario that limits the effectiveness of conventional monetary policy.

Fiscal pressures and defence spending trade-offs

Compounding the challenge is the fiscal response. Governments across advanced and emerging economies are already under pressure to increase defence spending amid heightened geopolitical risks.

The IMF has cautioned that a sustained rise in military expenditure could crowd out social and developmental spending, particularly in fiscally constrained economies. That trade-off risks exacerbating inequality and, in some cases, triggering social unrest, further undermining economic stability.

Markets turn cautious, capital gets expensive

Financial markets are beginning to reflect these risks. The conflict has triggered a broader risk-off sentiment, strengthening the US dollar, tightening global financial conditions, and increasing borrowing costs for emerging markets.

Business confidence has also taken a hit, with firms delaying investments and reassessing supply chains amid uncertainty over energy prices and trade flows.

Global trade recovery at risk

Global trade, a key engine of the post-pandemic recovery, is expected to slow later in 2026 as higher fuel and logistics costs weigh on demand and margins.

Early indicators already suggest a moderation in trade volumes, raising concerns that the crisis could derail what was expected to be a gradual normalisation of global commerce.

The broader lesson from past crises is clear: geopolitical shocks of this scale rarely remain confined to their immediate theatres. Instead, they propagate through commodity markets, financial systems, and policy responses, creating ripple effects that can linger for years.

The current crisis appears to be following a similar trajectory — one where the initial oil shock evolves into a wider macroeconomic challenge.

Policy dilemma with no easy answers

For policymakers, the dilemma is acute. Tightening monetary policy to contain inflation risks choking off already weak growth, while fiscal expansion to support households and businesses could worsen debt dynamics.

In this environment, even a temporary conflict carries outsized economic consequences.

As the IMF’s scenarios make clear, the global economy is operating with little margin for error. A prolonged escalation would not just raise energy prices — it could fundamentally reset growth and inflation trajectories for years to come.

With inputs from agencies.