WASHINGTON — The U.S. military campaign against Iran has cost more than $38 billion through Aug. 1, according to a nonpartisan Congressional Budget Office assessment, with ongoing monthly expenses estimated in the range of $2 billion to $3 billion.
The figure aligns closely with earlier public estimates from Defense Secretary Pete Hegseth and underscores the fiscal weight of a conflict that has also pushed energy prices higher and complicated the Federal Reserve’s inflation fight.
What the numbers show
The $38 billion total covers operations, munitions, basing, and related costs through early August. Analysts caution that equipment losses, replenishment of stockpiles, and longer-term readiness impacts could add more over time.
Higher oil prices linked to Middle East disruption feed into gasoline and shipping costs for American households and businesses, amplifying the domestic economic effect beyond direct Pentagon outlays.
The price tag on Washington’s military campaign is mounting by the billions every month. A CBO report shows the six-month US war against Iran has cost $38 billion through August 1.
— Economic Times (@EconomicTimes) September 16, 2026
Political and policy stakes
Supporters of the campaign argue the costs are necessary to deter Iran, protect shipping lanes, and support partners. Critics in Congress point to the cumulative bill, service-member casualties, and the risk of an open-ended commitment without a clear end state.
House votes seeking to limit war powers and the recent impeachment articles filed by Rep. Thomas Massie reflect that unease, even inside the president’s party.
Outlook
Monthly burn rates will remain a focal point for budget writers and voters heading into the midterms. Any sustained de-escalation that reopens the Strait of Hormuz more fully could ease both fiscal and inflation pressures, while continued fighting would keep adding to the tab.
