U.S. costs of Iran war rise above $47 billion, Pentagon estimate shows

U.S. costs of Iran war rise above $47 billion, Pentagon estimate shows
USS Michael Murphy (DDG 112) launches Tomahawk cruise missiles from an unknown location, released on 10 June 2026.
Reuters

The cost of the U.S. war in Iran has climbed above $47 billion, according to Pentagon data obtained by Reuters, as spending on munitions, equipment losses and military operations continues to rise.

More than $29 billion of the Pentagon’s latest estimate is tied to replacing munitions used during the conflict, while more than $6 billion would be needed to cover equipment and platform losses, including aircraft and drones.

The Pentagon has not publicly released the estimate and did not immediately respond to a request for comment.

The latest estimate is higher than Defense Secretary Pete Hegseth’s July figure of $37.5 billion.

The calculations include operational expenses ranging from flight missions to cyber support, but they do not appear to fully account for the expected cost of repairing U.S. bases damaged by Iranian missile and drone attacks.

Rising costs add to political pressure

The rising financial burden comes as Republicans face political pressure ahead of the 3 November election, which will determine control of Congress for the next two years.

The conflict has also affected global energy prices, weighing on support for Republican candidates and on President Donald Trump’s approval ratings. Republicans currently hold narrow majorities in both chambers of Congress.

U.S. strategy shifted during the conflict

Trump launched the war against Iran jointly with Israel in February and initially predicted that the fighting would be brief.

The early U.S. strategy relied on costly precision-guided missiles to weaken Iranian defences before shifting to cheaper weapons, including air-launched JDAM gravity bombs.

An April ceasefire, however, gave Iran time to reopen underground storage sites and restore access to some defensive systems, missiles and drones that had previously been unavailable.

Pentagon prepares for possible renewed fighting

Trump later imposed a naval blockade aimed at cutting Iran’s oil export revenues and has left open the possibility of renewed combat operations after the midterm elections.

U.S. officials, speaking on condition of anonymity, have said the Pentagon is preparing for the possibility of a return to large-scale fighting if ordered to do so.

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