Markets are pricing the Iran war as a contained event. That is the wrong frame. A reopened Strait of Hormuz averts the tail outcome — a synchronised global recession — but the second-order damage is already locked in. Gulf crude output has been cut, fertiliser flows interrupted, infrastructure scarred, and OPEC cohesion strained. The economically relevant question is not whether shipping resumes, but how long the resulting risk premium sits on top of inflation, growth and emerging-market fiscal space. The answer, on the evidence, is months — not weeks.
Start with the supply arithmetic. The Economist puts Gulf crude output cuts at 10 million barrels per day, around a tenth of global supply. Christine Lagarde, citing the ECB's working numbers, frames the net loss at roughly 13 million barrels per day even after pipeline redirection and strategic reserve releases — about 13 percent of global consumption before any US action on the strait. Numbers of that magnitude do not get reabsorbed by a ceasefire announcement. They get reabsorbed by capex cycles, and capex cycles run in years.
The fertiliser channel is underpriced
The grain market has barely registered what the ECB is flagging: a comparable share of seaborne fertiliser trade also passes through Hormuz. The Economist notes that the resulting shortage has already disrupted the northern-hemisphere planting season and parts of Africa, with knock-on effects on food supply and hunger. Fertiliser is a slow-burn shock — it does not show up in headline CPI for two quarters, then sits there. For central banks already calibrating against an energy pass-through, this is the second leg of a sequenced inflation impulse, not a separate story.
A ceasefire ends the war. It does not end the risk premium.
Where the stress lands
The fiscal damage will be unevenly distributed, and Indonesia is the cleanest expression of the risk. The Economist reports that at $97 oil, the country's deficit pushes to 3.5 percent of GDP, breaching the statutory 3 percent cap that has anchored its credit standing since 1998. Prabowo Subianto's instinct is to spend through it rather than retrench. The base case from here is a ratings agency action within twelve months and a meaningful repricing of Indonesian sovereign risk — a forecastable, marketable claim, not a vibe. The Gulf, meanwhile, has its own fiscal recalibration underway: Saudi Arabia has already cancelled contracts on Trojena and trimmed The Line, according to The Economist, and the New York Times reports Washington is weighing financial support for a war-damaged UAE. Vision 2030 is being quietly rescoped in real time.
The offsetting beneficiaries are exactly who you would expect, and they are not capturing the rents. ExxonMobil is accelerating its Stabroek schedule in Guyana, with a fifth FPSO arriving a year early and a seventh targeted for 2028. Australia is exporting LNG into a tight global gas market while collecting, as David Pocock put it, more tax revenue from beer than from gas. Ken Henry and Rod Sims are right on the economics: a windfall is being transferred from sovereign owners to producers because the fiscal architecture was designed for a different price regime. Whether Canberra closes that gap is the cleanest political-economy trade of the next twelve months. The base case is that it does not, and the PRRT debate becomes a 2026 election issue rather than a 2025 budget line.
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