Iran war cost hits $38 billion, forecast to rise $3 billion a month, CBO says

By Jacob Bogage

WASHINGTON, Sept 15 (Reuters) – The six-month-old U.S. war against Iran has cost $38 billion so far and that amount is projected to rise by $3 billion a month, Congress’ nonpartisan bookkeeper reported on Tuesday, as the Trump administration searches for ways to end the conflict and reopen the vital Strait of Hormuz.

The war is expected to increase inflation by 0.5% in the first three months of 2027, according to the Congressional Budget Office accounting, which totaled expenses through August 1.

By Jacob Bogage

WASHINGTON, Sept 15 (Reuters) – The six-month-old U.S. war against Iran has cost $38 billion so far and that amount is projected to rise by $3 billion a month, Congress’ nonpartisan bookkeeper reported on Tuesday, as the Trump administration searches for ways to end the conflict and reopen the vital Strait of Hormuz.

The war is expected to increase inflation by 0.5% in the first three months of 2027, according to the Congressional Budget Office accounting, which totaled expenses through August 1.