US Iran War Costs Range Widely: $38 Billion by CBO, Pentagon Offers Lower Estimates

The United States' war in Iran has generated significant financial costs, with estimates varying between official bodies. The nonpartisan Congressional Budget Office (CBO) reported that the conflict had cost the US military around $38 billion as of August 1, 2026. This figure contrasts with earlier assessments from Pentagon officials, such as Jules Hurst, who initially stated the war had cost $25 billion, with most of the expense attributed to munitions. A subsequent estimate from Pentagon Comptroller Jay Hurst placed the cost closer to $29 billion, citing updated equipment repair and general operational expenses. The CBO also indicated that monthly costs could increase by $2-$3 billion or more if the conflict intensifies, and noted potential impacts on inflation.