The United States is spending nearly $891 million every day on its military campaign againstIran, with the cost of the conflict’s first week alone reaching about $6 billion, according to estimates based onPentagon data. Analysts warn that if the fighting continues, the overall bill could quickly climb into tens of billions of dollars, while the economic fallout spreads far beyond the region.

A report by The New York Times said the Pentagon informed the United States Congress that roughly $6 billion had already been spent during the war’s opening week. Lawmakers from the Republican Party are reportedly expecting the administration of Donald Trump to soon request additional funding to sustain the campaign.

Independent analysis by the Center for Strategic and International Studies (CSIS) calculated a daily cost of $891.4 million, based on the number of targets struck and the scale of military assets deployed. Researchers at the Washington-based think tank noted that the administration may need supplementary appropriations from Congress, similar to the funding measures sought during the wars in Iraq and Afghanistan under George W Bush in the early 2000s. Such requests, they warned, could become a political flashpoint for critics of the war.

The spending has already reached levels comparable to the economies of smaller countries. At nearly $900 million per day, the cost exceeds the annual space budget of India in just a few days.

Much of the early expenditure has gone toward weapons. Around $4 billion of the first week’s spending was reportedly devoted to munitions, particularly interceptor missiles used to destroy incoming Iranian rockets and drones. That amount far surpasses the cost of the brief Operation Midnight Hammer, the US strike on Iranian nuclear facilities in June 2025.

According to the Costs of War Project at Brown University, that earlier operation cost between $2.04 billion and $2.26 billion despite lasting just over two hours. By comparison, the current conflict burned through almost three times that amount in its first 100 hours, CSIS estimated.

The CSIS breakdown suggests that air operations alone cost about $30 million per day, while naval deployments run close to $15 million daily. Ground operations add another $1.6 million per day.

The US military presence in the region has expanded sharply. More than 50,000 American troops are now stationed in and around the theatre of operations, supported by two aircraft carriers, multiple warships and a growing fleet of bombers and attack aircraft.

Analysts say expenses could decline if the United States shifts to cheaper weapons or if Iranian missile and drone attacks decrease. However, the current burn rate remains striking compared with global economic benchmarks. At $891 million a day, the United States would spend the equivalent of Pakistan’s entire annual defence budget in about ten days, and roughly Nepal’s annual GDP in less than two months, according to the analysis.

For American taxpayers, the comparison is also stark. **NASA’s budget for fiscal year 2026 stands at $24.4 billion, meaning the war could consume the equivalent of the US civilian space programme’s entire annual funding in under a month.

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