What the Iran war cost the Pentagon, the economy — and Trump
What the Iran War Cost the Pentagon, the Economy — and Trump
What the Iran war cost the Pentagon - After a pause in hostilities following the signing of an agreement and upcoming discussions, the U.S. conflict with Iran has temporarily stalled. President Donald Trump, however, has already proclaimed victory, declaring on his social media platform that Americans have secured a win. “YOU’RE WELCOME!” he wrote, listing what he claims are the outcomes of his strategy. “OIL IS FLOWING, IRAN CAN NEVER HAVE A NUCLEAR WEAPON (THE WORLD WILL BE SAFE!), THE STOCK MARKETS ARE ROARING, JOBS ARE AT RECORDS, AND PRICES ARE DROPPING (AFFORDABILITY!). OUR COUNTRY IS STRONG, SAFE, AND RESPECTED LIKE NEVER BEFORE,” Trump asserted.
Despite the administration’s optimistic take, the economic and military toll of the war paints a more complex picture. Over 100 days of hostilities, 13 U.S. military personnel and more than 7,500 civilians in the region were killed. An analysis from the Center for Strategic and International Studies (CSIS) reveals the conflict cost the Department of Defense roughly $40 billion. This figure accounts for munitions, damaged equipment, and base destruction but excludes operational costs already included in the DoD’s $1 trillion fiscal year 2026 budget, according to Mark Cancian, a senior CSIS adviser.
“The Pentagon has requested an additional $80 billion in funding, though only a fraction relates to the immediate needs of the Iran war,” one U.S. government source told CNN. The request, said another, doesn’t cover repairs to facilities or ongoing costs for U.S. military bases in the region.
Mark Cancian also highlighted that munitions were the largest expense, noting the heavy reliance on advanced, costly weapons. For instance, a single Tomahawk missile costs around $2.5 million, and the U.S. deployed nearly a thousand during the conflict. Experts suggest the military significantly depleted its critical missile inventory. Trump had earlier invoked the Defense Production Act to accelerate weapon manufacturing, aiming to bolster supply.
As the war progressed, the daily financial burden decreased due to fewer strikes and reduced use of expensive armaments. CSIS estimated that the initial 100 hours of the conflict cost $3.7 billion. By day 12, cumulative expenses reached approximately $16.5 billion. While the DoD absorbed most of the costs, other agencies, such as Homeland Security and Veterans Affairs, faced about $1 billion in additional spending, with $165 million tied to rising fuel prices.
The war also triggered a spike in gas prices, a challenge for Trump, whose policies emphasize fossil fuel production. Prices climbed from an average of under $3 per gallon to over $4 during the conflict. Although oil traffic through the Strait of Hormuz has resumed, prices are expected to decline gradually. As of Friday, the U.S. average was $3.97 a gallon, dipping below $4 for the first time since March 30.
American households, according to Brown University’s energy cost tracker, have spent over $253 more per month on fuel compared to pre-war levels. The impact is felt most acutely by everyday consumers, but farmers and shippers have faced higher diesel costs, which surged to over $5 per gallon by June 15. The university’s data shows the nation spent nearly $27.1 billion extra on diesel due to the price surge.
Additionally, the war contributed to the depletion of the U.S. emergency oil reserve, stored in salt caverns along the Gulf Coast. This reserve, now at its lowest level since 1983, was drawn down by both the Biden and Trump administrations. The Biden team tapped it amid Russia’s Ukraine conflict, while Trump’s actions during the Iran war further strained its levels.