CBO pegs “Golden Dome” missile defense at ~$1.2T over 20 years, with space-based interceptors the biggest cost driver
The Congressional Budget Office estimates that a national missile defense architecture broadly aligned with President Trump’s “Golden Dome” executive order would cost about $1.2 trillion over 20 years. The CBO report says space-based interceptors are the largest expense category, far above the Pentagon’s public ~$185 billion estimate.