Iran war driving up inflation for Americans, CBO report says

WASHINGTON — The war with Iran is driving up inflation and borrowing costs may increase for Americans, according to a new report released on Tuesday by the Congressional Budget Office.

The report found the war was responsible for more than one-third of the increase in inflation this year, and inflation will continue to grow in the first quarter of next year. The CBO specifically blames the war for more than 40% of inflation during the second quarter of 2026 and an estimated half a percentage point of higher inflation during the first quarter of 2027. Interest rates are likely to rise as a result, making borrowing more costly the report found.

The main driver of increased inflation is fewer oil and natural gas shipments through the Strait of Hormuz and the Red Sea, the CBO report says.

The Congressional Budget is a non-partisan federal agency controlled by the U.S. Congress that conducts analysis related to the federal budget and the economy.

The estimate comes a day after the Pentagon’s watchdog found the war resulted in a shortfall of U.S. munitions and “bottlenecks” in supply chains.

The CBO report estimates it will be five years before the Pentagon is able to replace munitions expended during the war, which it estimates has roughly $38 billion as of Aug. 1. That cost estimate does not include the price tag for repairing damage Iran inflicted on “hundreds of buildings and structures at U.S. bases” in the Middle East.

The Pentagon didn’t cooperate with requests from Congressional Budget Office, according to the Congressional Budget Office. The White House didn’t immediately respond to a request for comment.

One of the reasons the CBO says it could not estimate the cost of damage to U.S. military bases and other facilities in the region is because the Defense Department hasn’t shared with the office “information about the value of damaged or destroyed equipment and property” or what repairs the Pentagon plans to make, the funding for which could in part be picked up by the countries where the facilities are located.

Sen. Elizabeth Warren, D-Mass., in a written statement called for an end to the war and described it as “a one-two punch that’s burning a hole in Americans’ pockets and burning a hole in our munitions supply, hurting our military readiness.”

The report estimated it would cost $13.1 billion to replace missile defense interceptors alone, and the overall cost to replace munitions expended through Aug. 1 would be $21.7 billion. It will take roughly $2 to $3 billion per month to maintain the war’s status quo, and more if conflict escalates, the report found.