The Congressional Budget Office has estimated that President Donald Trump's proposed 'Golden Dome for America' missile defence system would cost nearly $1.2 trillion over 20 years, far exceeding the administration’s earlier projection of $175 billion. The analysis outlines more than $1 trillion in acquisition costs, with the remainder covering operations and maintenance. The office noted that its estimate reflects one possible approach and not a detailed administration plan.
Trump ordered the creation of the next-generation missile shield in January 2025, citing increasingly complex threats from advanced strategic weapons. Inspired in part by Israel’s Iron Dome, the proposed system would combine ground-based and space-based technologies to detect and intercept missiles at all stages of flight, with a goal of full operation by January 2029.
The wide gap between cost estimates appears to stem from differing assumptions about scope, timeline, and budget categories. The administration’s figures may cover a shorter period and fewer components, while lawmakers have already approved $25 billion in initial funding and are considering additional requests. The budget office also warned of challenges including interceptor shortages, radar limitations, funding constraints, and the need to train personnel, as debate over the program’s affordability continues in Congress.



