President Donald Trump's war against Iran has cost the U.S. military more than $47 billion, according to Pentagon data. That's over 25% higher than Defense Secretary Pete Hegseth's July estimate, and lawmakers are starting to make noise about what taxpayers are getting for the money.

The Weapons Bill Keeps Growing

The latest figure, obtained by Reuters, is a big jump from July 21, when Hegseth told the Senate Appropriations Committee, "Senator, the estimate we have as of today is $37.5 billion."

Reuters separately reported on Wednesday that the military expects to spend more than $29 billion to replace expended munitions and another $6 billion to replace lost equipment, including aircraft and drones. The estimate also covers operational expenses, but it does not clearly account for repairs to American bases damaged by Iranian attacks.

The Pentagon has not publicly released the figures and did not immediately respond to MarketDash's request to confirm the reported cost.

Sen. Elizabeth Warren (D-Mass.) has already been pressing the question of what the war is actually achieving. On October 22, she said, "Nobody can seem to explain what this war has accomplished or when it will end."

Your Grocery Bill Is Part Of The War Effort

The Congressional Budget Office estimated in September that higher energy prices from the conflict added 2.3 percentage points to the annualized inflation rate in the second quarter. It also projected the conflict would push inflation 0.5 percentage points higher in early 2027.

Sen. John Hickenlooper (D-Colo.) made the household-level case during a September 23 Senate speech. "You're paying for this war every day: when you fill up your tank, buy your groceries, and pay your rent," he said.

Those concerns follow earlier warnings about soaring gasoline and diesel prices, which have been squeezing household budgets.

Trump Says It's Worth It, But The Bill May Not Be Final

Trump has characterized higher fuel and fertilizer costs as a "small price to pay" for preventing Iran from threatening American cities.

But the president has left open the possibility of renewed military operations after November's midterm elections. Pentagon officials are preparing for further combat if Trump authorizes it, which could push costs beyond the latest estimate.