CBO Estimates Trump's Golden Dome Missile Shield Could Cost $1.2 Trillion Over 20 Years
Primary region US
Tags Policy · Security · Economy
Regions US
The Congressional Budget Office estimated that President Trump's Golden Dome missile defense program could cost $1.2 trillion to develop, deploy, and operate over 20 years, far exceeding the administration's $185 billion estimate. The CBO analysis, requested by Sen. Jeff Merkley (D-Ore.), found that acquisition costs alone would exceed $1 trillion, with the space-based interceptor layer accounting for 70% of acquisition costs. The report acknowledged uncertainty because the Defense Department has released few details about the system's architecture. Congress has already approved roughly $24 billion for the program through last summer's tax and spending law. The CBO noted the project may face delays due to the need to replenish THAAD and Patriot interceptor missiles deployed in the Iran war.
Strategic interpretation
The enormous cost gap between the CBO estimate and the administration's $185 billion figure creates a significant political vulnerability, particularly as the Iran war already costs $29 billion and rising. The program's reliance on space-based interceptors — the most expensive component — could trigger opposition from fiscal conservatives and renew debate over the militarization of space. If the administration proceeds, it will likely need to restructure the program's scope or phase it over a longer period, potentially delaying operational capability beyond Trump's term.