Senate Democrats Request Full Cost Analysis of Iran War from Budget Office
Senate Democrats demand Congressional Budget Office include independent analyst projections in Iran war cost estimates, citing major gaps with Pentagon’s $29 billion figure.

WASHINGTON, DISTRICT OF COLUMBIA β A group of U.S. Senate Democrats sent a letter to the Congressional Budget Office on May 27, requesting comprehensive cost estimates for the ongoing Iran war, including projections from independent analysts beyond Pentagon figures.
The senators asked CBO Director Phillip Swagel to “take into consideration the significant divergence between the administration’s public estimates and those produced by independent analysts and investigative journalists” when calculating the financial impact of the military conflict.
“The American people deserve to know the true costs of this conflict, and they deserve transparency and honesty when their government commits the nation to war,” the senators wrote in their letter to the nonpartisan agency. “Your timely and comprehensive estimate of the immediate and long-term budgetary consequences will help ensure that the Iran war remains subject to rigorous and appropriate legislative oversight.”
Pentagon Estimates vs. Independent Analysis
The request comes amid growing concerns about cost transparency after Pentagon officials stated in mid-May they believed the war had cost approximately $29 billion. However, the senators noted that other estimates place the total costs significantly higher than the official Pentagon figures.
House Budget Committee ranking member Brendan Boyle, a Pennsylvania Democrat, previously sent a similar request to the CBO in early March. Boyle asked the agency to estimate conflict costs “under several scenarios, including scenarios of the war lasting longer than 4 to 5 weeks and deploying U.S. troops on the ground in Iran.”
Bipartisan Call for Accountability
The Senate letter was signed by multiple Democratic lawmakers, including Arizona Senator Mark Kelly, California Senator Alex Padilla, Colorado Senator Michael Bennet, Connecticut Senators Richard Blumenthal and Chris Murphy, Georgia Senator Jon Ossoff, and Illinois Senators Dick Durbin and Tammy Duckworth. Maryland senators also joined the effort, according to the Georgia Recorder.
“It is essential that Congress and the American public receive accurate, comprehensive estimates of the costs of the war in Iran,” the senators stated in their formal request.
The Congressional Budget Office serves as the official scorekeeper for federal spending and provides nonpartisan analysis to help lawmakers understand the fiscal impact of proposed legislation and military operations. The agency’s estimates carry significant weight in congressional deliberations about funding and oversight.
The senators’ push for expanded cost analysis reflects growing legislative concern about long-term financial commitments related to the Iran conflict, particularly as independent analysts suggest the actual expenses may far exceed current Pentagon projections.


