Defense Secretary Pete Hegseth informed senators on July 21, 2026, that the Iran war has cost the U.S. military approximately $37.5 billion to date. This figure represents an increase from the $28 billion estimate provided in the spring, prior to the implementation of a ceasefire.
Additionally, NBC News reported in July 2026 that some experts and officials have estimated the overall cost of the war to be between $80 billion and $100 billion.
These differing estimates highlight ongoing assessments of the financial impact of the conflict involving Iran.
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