White House Refuses to Ballpark Iran War Cost as Congress Demands Answers

Seven weeks into the U.S.-Israeli war with Iran, the Trump administration told Congress it still cannot estimate the cost — while pushing a $1.5 trillion defense budget and a tax-and-spending package that the CBO projects will add $4.7 trillion to the deficit over a decade.

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When Representative Veronica Escobar asked White House Budget Director Russell Vought whether the Iran war would cost more than $50 billion, she received a flat answer: "I don't have a ballpark for you, congresswoman."

The exchange, at an April 15 House Budget Committee hearing, crystallized a pattern that has frustrated lawmakers of both parties: the Trump administration is requesting massive military spending while offering no accounting for the conflict it launched alongside Israel on February 28.

"We're not ready to come to you with a request. We're still working on it," Vought said. "We're working through to figure out what's needed in this fiscal year versus next fiscal year."

The Price Tag Nobody Will Cite

The cost of the war has remained an open question on Capitol Hill for more than a month. Last month, the Pentagon asked the White House to approve $200 billion in additional funding — a request that met stiff opposition and was never formally submitted to Congress. The Washington Post reported last week that the White House could seek between $80 billion and $100 billion instead, a significant reduction.

Defense Secretary Pete Hegseth, when the $200 billion figure was reported, offered a succinct defense: "It takes money to kill bad guys."

But independent analysts put the cost far higher. Linda Bilmes, a public policy lecturer at Harvard Kennedy School and author of "The Ghost Budget: U.S. War Spending and Fiscal Transparency," told Fortune magazine this week: "I am certain we will spend $1 trillion for the Iran war. Perhaps we have already racked up that amount."

The rate of spending supports that projection. The Center for Strategic and International Studies estimated the first six days of the conflict cost $11.3 billion in munitions alone. By day 12, that figure had risen to approximately $16.5 billion. By April 1, the American Enterprise Institute calculated the cost had exceeded $35 billion — roughly $260 per American household. Bilmes estimates the current daily burn rate at $2 billion.

The Budget Context

Vought appeared before the committee to defend Trump's proposed budget for fiscal year 2027, which calls for $1.5 trillion in defense spending — a 44% increase — alongside a 10% reduction to non-defense programs. The proposal is intended to reflect Republican priorities heading into the November midterm elections.

Also on the table is the "One Big Beautiful Bill Act," Trump's 2025 tax-cut-and-spending package. According to the nonpartisan Congressional Budget Office, the legislation will add $4.7 trillion to U.S. deficits over the next decade. Reduced immigration is projected to add another $500 billion.

The White House has promoted the package as achieving $2 trillion in mandatory savings through cuts to Medicaid health coverage and food assistance for low-income families.

Bipartisan Pushback on the Hill

The hearing revealed rare bipartisan agreement — though on different grounds — that the administration lacks accountability.

Democratic Representative Pramila Jayapal of Washington state pressed Vought on the contradiction between the administration's focus on fraud in social programs and its request for $1.5 trillion for the Pentagon, which has never passed an audit in its history.

"The Department of Defense is the only federal agency that has never passed an audit," Jayapal said. "But you're not going after any of that."

Republican Representative Glenn Grothman of Wisconsin was even more pointed. "There is so much arrogance in that agency," he said. "They just say we don't have to do it on audit. We're so damn important. We don't care what Congress thinks."

Grothman called for the Pentagon to complete an audit before any defense spending vote.

Representative Brendan Boyle of Pennsylvania, the committee's top Democrat, pressed Vought on projections that the "One Big Beautiful Bill Act's" healthcare cuts would result in loss of coverage for more than 15 million people. When Boyle asked if Vought would acknowledge those figures, Vought said the affected individuals were "able-bodied adults, people in the country illegally or ineligible for benefits."

"You're going to sit here with a straight face and say they're all illegals?" Boyle replied. "That's actually your position?"

"Yes," Vought said.

Democratic Representative Scott Peters of California raised the Government's findings that the administration illegally withheld billions of dollars allocated for NIH grants, public schools, and Head Start early education programs. When Peters asked if Vought disputed GAO's findings, he replied: "Yes. GAO is typically wrong. They're very partisan."

A War With No Price Tag

The hearing underlined a structural tension: Congress is being asked to fund a war whose total cost remains undisclosed more than six weeks after it began. Multiple independent analysts have projected costs in the hundreds of billions to trillions of dollars. The administration will not say whether it expects the final bill to exceed $50 billion.

Tehran, for its part, has put the cost differently: Iranian officials have characterized the Hormuz blockade — maintained by the U.S. Navy throughout the conflict — as a stranglehold on global energy markets that has driven Brent crude above $95 per barrel and pushed Asian trading partners to reroute shipments through alternative corridors at significant cost.

The blockade remains in place even as peace talks mediated by Pakistan continue, with both sides holding discrepant positions on what any settlement would require.

Congressional Deadlock

To become law, Trump's proposed budget needs Congressional approval at a time when Republicans are navigating Democratic opposition to funding for Trump's immigration crackdown — months after the longest government shutdown in U.S. history. Democrats have declared the proposal dead on arrival; government funding is currently operating under a stopgap continuing resolution. The path to any supplemental Iran war funding is at best unclear.

Bilmes, who previously calculated that the Iraq and Afghanistan wars cost U.S. taxpayers $4 trillion to $6 trillion — four times initial CBO projections — warned that the pattern is repeating.

"Wars always have a long tail of costs," she told Fortune. "Wars cost more than we expect. Wars take longer than we expect, and some of these costs are very consequential."

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Sources

• Navy Times / Reuters — "White House offers no hint of Iran war cost as it seeks military funding surge" (April 15, 2026). Reporting by Nolan D. McCaskill and David Morgan.
• CNBC — "White House budget chief Russell Vought won't estimate Iran war cost in testimony" (April 15, 2026, updated 2:30 PM EDT).
• Fortune — "'I am certain': Harvard policy expert warns the true cost of the Iran war to U.S. taxpayers will exceed $1 trillion" (April 15, 2026). Reporting by Sasha Rogelberg.
• The New Arab — "White House offers no hint of war cost, seeks military funding" (April 15, 2026).
• Center for Strategic and International Studies (CSIS) — "Iran War Cost Estimate Update: $11.3 Billion by Day 6, $16.5 Billion by Day 12."
• American Enterprise Institute (AEI) — Economic costs analysis, updated through April 1, 2026.
• Harvard Kennedy School — Linda Bilmes faculty research: "Why War with Iran Is So Expensive."
• Congressional Budget Office — Projected deficit impact of the "One Big Beautiful Bill Act" (April 2026).
• Government Accountability Office (GAO) — Findings on illegally withheld federal grant funds (April 2026).

Draft v1 — April 16, 2026, 09:10 AM EST. Subject to editorial review.

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