Iran war cost rises to $47.1 billion, Pentagon tells Congress

The war with Iran has cost the United States $47.1 billion through October 16, 2026, the Pentagon has told members of Congress, according to congressional officials quoted in reports on October 27 and 28. The new estimate, given to lawmakers on the national security committees, is more than 25% higher than the roughly $37.5 billion Defense Secretary Pete Hegseth cited in July. Congressional officials said the true figure is almost certainly higher, because it leaves out damage to American bases in the Middle East from Iranian missile and drone attacks, and about $1.5 billion for fuel and other costs that the administration has separately asked Congress to fund.

The new figure shows how quickly a modern war burns through money, and especially through weapons. More than 60% of the estimated cost is for replacing munitions, such as missiles and interceptors fired during the conflict. These are expensive, take time to build, and their stocks matter for other commitments the United States has around the world. A war that uses them up quickly affects military readiness well beyond the Middle East.

The cost is also becoming a political fight in Washington. The administration has asked Congress for extra money to pay for the war, and lawmakers have not passed it. Democrats want Hegseth to give a more detailed account of how the money has been spent. The fact that the estimate excludes damage to US bases and some fuel costs gives critics a reason to say the real bill is being understated.

The rising figures also show the war's pace. Between July and mid-October, the estimate climbed by nearly $10 billion, roughly in line with the Congressional Budget Office's projection of $2 billion to $3 billion a month. If the fighting continues at a similar level, the total could pass $50 billion within a few months.

For India and the rest of the world, the war matters mainly through energy and trade. The conflict has disrupted oil markets and shipping in the region, which affects fuel prices, inflation and the safety of the many Indians who live and work in the Gulf. The cost debate in Washington will help decide how long the United States can sustain operations at this level.

Short-term: The new figure adds pressure on Congress to decide on the administration's extra funding request, and on the Pentagon to explain its spending in more detail.

Long-term: Replacing tens of billions of dollars in munitions will take years and will shape US defence budgets and weapons production. A prolonged war could also keep energy markets unsettled, affecting import-dependent economies such as India.

Who is affected: US taxpayers and lawmakers, the US armed forces, defence manufacturers, countries in the Gulf region and their workers, and energy-importing economies worldwide.

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