New assessment puts direct US costs of the Iran war at at least $38 billion

A new fiscal measure of the war

A new Congressional Budget Office assessment puts direct US costs from the war with Iran at no less than $38 billion, according to the Guardian. The estimate is a distinct development from earlier Pentagon disclosures about damaged bases and ammunition shortages because it brings operating costs, replacement requirements and wider economic effects into one fiscal picture. The report says each additional month of war could add about $3 billion.

Replenishment will take years

The assessment says defensive missile stocks could require at least five years to rebuild. A Pentagon inspector general report released a day earlier put munitions expenditure through June 30 at $22.3 billion and overall costs at $33.4 billion. The new analysis estimates that replacing expended weapons could cost $21.7 billion, including $13.1 billion for missile-defence interceptors, highlighting how high operational tempo can become a long-term procurement problem.

Damage and battlefield consumption

Iranian strikes damaged or destroyed hundreds of structures at US installations across the Gulf, the Guardian reported from the official assessments. The White House has separately published an account confirming that an American F-15E was lost during combat operations over Iran in April, with both crew members surviving. That primary account establishes the active-war context, although it does not independently validate the CBO’s comprehensive cost estimate.

Economic effects reach beyond the Pentagon

The CBO analysis estimates the conflict could add half a percentage point to US inflation by early 2027 and approximately 0.2 percentage points to short-term interest rates. Energy is an important transmission channel: Brent crude rose from about $64 a barrel before the war to a peak near $103. Higher fuel and transport costs can affect households and businesses even when Congress finances the military campaign through additional borrowing.

What Congress must decide next

Lawmakers now face linked choices about continued operations, emergency appropriations and the pace of weapons replenishment. The durability of missile-defence inventories will matter as much as the headline spending total if the conflict persists. Future monthly estimates, procurement schedules and oil-price movements will show whether the $38 billion figure is a floor or a stable measure. This is a fiscal assessment, not confirmation of a newly begun strike, so no alert is warranted.