The Pentagon now estimates the Iran war has cost U.S. taxpayers $47.1 billion through Oct. 16—more than 25% above the $37.5 billion estimate Defense Secretary Pete Hegseth gave in July. The conflict began in late February and has entered its eighth month.

Replacing expended munitions accounts for about $29 billion of the total, including costly defensive missile interceptors; operations cost $11.9 billion, while replacing lost equipment such as aircraft and drones adds more than $6 billion.

The Pentagon’s breakdown includes $7.6 billion in Air Force costs, more than $2 billion for the Army and $1.45 billion for the Navy, down from $2.2 billion in early September; the Pentagon did not immediately explain the Navy’s lower figure.

The estimate excludes damage to U.S. bases across the Middle East. A Pentagon inspector general report said Iranian strikes damaged or destroyed hundreds of buildings and other structures at bases in eight countries.

The Pentagon lists 21 U.S. service members killed and 865 wounded, although the death tally includes cases not directly tied to the conflict; 18 deaths were attributed to Iranian strikes, aircraft crashes or disposal of Iranian drones.

Trump initially expected a short campaign and planned to shift from costly precision missiles to cheaper munitions. An April ceasefire gave Iran time to restore some underground facilities, defenses, missiles and drones.

Trump has imposed a naval blockade intended to cut Iran’s oil-export revenue and has left open the possibility of combat resuming after the midterms; U.S. officials say the Pentagon is preparing for renewed heavy fighting if ordered.

As Trump weighs a deal with Iran or further escalation, a third aircraft carrier and thousands of additional troops are heading to the region. The administration has also reduced staffing at some U.S. embassies amid concerns about threats to American personnel.

The war’s cost is adding to congressional tensions as the White House seeks a proposed $1.5 trillion military budget and a separate $95 billion package for the war and other priorities. Democrats have tried unsuccessfully to end the conflict through legislation, and Senate Minority Leader Chuck Schumer criticized it as lacking a plan and exit strategy.

The conflict’s rising costs and effects on energy prices have become issues ahead of the midterm elections, when voters will decide which party controls Congress. An AP-NORC poll found most voters want Congress to prioritize ending the war.

The war, launched jointly by Trump and Israel in February, has raised global energy costs and contributed to declining support for Republican candidates and Trump’s approval ratings ahead of the November 3 election.