Pentagon Reports: Iran Conflict Costs US $11.3 Billion in First Six Days
Pentagon estimates first six days of Iran war cost US over $11.3 billion in munitions; excludes buildup and other expenses.
The Pentagon informed Congress in a closed-door briefing on March 11, 2026, that the first six days of the U.S.-led military campaign against Iran—known as Operation Epic Fury—had cost the United States more than $11.3 billion, according to multiple sources familiar with the assessment. The figure, shared with members of the Senate Appropriations subcommittee on defense and others on Capitol Hill, primarily reflects expenditures on munitions and represents a significantly higher burn rate than earlier public estimates, prompting questions about the war's fiscal sustainability and potential need for supplemental funding.
The $11.3 billion estimate focuses largely on the replacement cost of advanced weaponry expended in intense airstrikes and other operations since the conflict began on February 28, 2026. Earlier reports indicated that $5.6 billion in munitions were used in just the first two days, while a Center for Strategic and International Studies analysis pegged the initial 100 hours at approximately $3.7 billion, or about $891 million per day. The latest Pentagon briefing provided lawmakers with their most comprehensive early tally to date, though officials noted that the total excludes several key elements, such as personnel deployment costs, operational maintenance of forces, repairs from Iranian retaliatory strikes on U.S. assets, and pre-conflict buildup expenses.
Lawmakers expressed concern over the rapid expenditure, with some like Sen. Chris Coons (D-Del.) suggesting the actual figure could be higher when all factors are included. The munitions-heavy nature of the campaign—targeting Iranian missile sites, naval assets, and command infrastructure—has driven the high costs, as the U.S. has relied on precision-guided weapons and other high-value ordnance to achieve quick degradation of Tehran's capabilities. Critics on Capitol Hill have highlighted comparisons to domestic priorities, noting that the six-day sum exceeds annual funding for programs like the National Cancer Institute ($7.4 billion) and approaches allocations for Head Start preschool services ($12.4 billion).
Also Read: US Congress Set to Vote on Restraining Trump From Iran Attack
The disclosure arrives amid President Donald Trump's assertions of decisive progress and predictions that the war could end "very soon," even as fighting continues into its second week with ongoing strikes, disruptions in the Strait of Hormuz, and regional spillover effects. No formal supplemental appropriations request has been submitted to Congress yet, but the escalating tab raises the prospect of future funding debates, especially given that much of the spending falls outside the regular defense budget baseline.
As the conflict persists, the high initial costs underscore the economic stakes for the United States beyond battlefield outcomes, including impacts on global energy markets mitigated by Strategic Petroleum Reserve releases. Pentagon officials continue to frame the expenditures as necessary to achieve core objectives of neutralizing threats, while lawmakers press for greater transparency on long-term projections and how the war will be financed without straining other national priorities.
