ISLAMABAD: The first 100 hours of the United States military campaign against Iran are estimated to have cost about $3.7 billion, averaging nearly $891.4 million per day, according to a report by the Center for Strategic and International Studies (CSIS).
The Washington-based think tank said the financial burden is expected to increase if the conflict continues for several weeks, as indicated by US President Donald Trump and Defence Secretary Pete Hegseth.
In its analysis, CSIS noted that the US Department of Defense may require additional funding beyond its current budget allocations to sustain military operations.
The report explained that the initial phase of an air campaign is typically the most expensive because it relies heavily on advanced and high-cost munitions and precision weapons.
“The cost of munitions will decline as the United States switches to lower-cost munitions,” the think tank said.
However, it warned that the overall unplanned expenses would remain substantial and could create budgetary challenges for the United States Department of Defense.
According to CSIS, funding the conflict solely through internal budget adjustments could be politically and operationally difficult, meaning additional congressional funding may eventually be required.
Analysts say the financial impact highlights the growing economic cost of the conflict as military operations continue in the region.