New cost estimate for Trump’s Golden Dome exceeds $1 trillion over 20 years
According to the Congressional Budget Office’s (CBO) new estimates, the cost to build Trump’s proposed Golden Dome defense plan will be about $1.2 trillion over the next 20 years, double what the CBO predicted last year and more than six times what the program’s head has predicted.
The Congressional Budget Office issued an updated estimate today of the cost of President Trump’s Golden Dome missile defense system. Lacking detailed data from the Administration, CBO based its analysis on the capabilities called for in Trump’s January 2025 Executive Order and concluded the total cost over 20 years is $1.2 trillion, about twice its estimate last year, with the bulk of it for Space-Based Interceptors.
Trump issued the Iron Dome for America Executive Order on January 27, 2025, seven days after his second term began. He soon renamed it Golden Dome in part to distinguish it from Israel’s Iron Dome system which has more limited capabilities. Trump appointed Gen. Michael Guetlein to lead the project and in an Oval Office meeting on May 20, 2025, said it would cost $175 billion and be completed in three years, before he leaves office.
By then CBO had estimated the cost at $524 billion based on information available at the time.
Guetlein has since raised his estimate to $185 billion, but it is widely viewed as far too low.
Several important points: First, the CBO’s cost estimates are usually wrong, in either direction, which means the cost could be a lot less, or a lot more. Odds are that in this case its estimate is trending in the right direction. Guetlein’s cost estimate is absurdly too low.
Second, the high cost helps explain why a lot of investment money is pouring into a lot of new space startups, for both rocket and satellite companies. Wall Street sees the federal government spending a lot of money on Golden Dome, and wants to get into the action. For the same reason this is why a lot of space companies have shifted their focus from civilian projects to the military.
Finally, the idea of Golden Dome is perfectly reasonable, as its concept has already been proven both by the U.S.’s Patriot missile system and Israel’s Iron Dome. The implementation however is going to be bad, because the people in Washington being asked to do it have a terrible track record. They routinely waste money and manage projects badly.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
According to the Congressional Budget Office’s (CBO) new estimates, the cost to build Trump’s proposed Golden Dome defense plan will be about $1.2 trillion over the next 20 years, double what the CBO predicted last year and more than six times what the program’s head has predicted.
The Congressional Budget Office issued an updated estimate today of the cost of President Trump’s Golden Dome missile defense system. Lacking detailed data from the Administration, CBO based its analysis on the capabilities called for in Trump’s January 2025 Executive Order and concluded the total cost over 20 years is $1.2 trillion, about twice its estimate last year, with the bulk of it for Space-Based Interceptors.
Trump issued the Iron Dome for America Executive Order on January 27, 2025, seven days after his second term began. He soon renamed it Golden Dome in part to distinguish it from Israel’s Iron Dome system which has more limited capabilities. Trump appointed Gen. Michael Guetlein to lead the project and in an Oval Office meeting on May 20, 2025, said it would cost $175 billion and be completed in three years, before he leaves office.
By then CBO had estimated the cost at $524 billion based on information available at the time.
Guetlein has since raised his estimate to $185 billion, but it is widely viewed as far too low.
Several important points: First, the CBO’s cost estimates are usually wrong, in either direction, which means the cost could be a lot less, or a lot more. Odds are that in this case its estimate is trending in the right direction. Guetlein’s cost estimate is absurdly too low.
Second, the high cost helps explain why a lot of investment money is pouring into a lot of new space startups, for both rocket and satellite companies. Wall Street sees the federal government spending a lot of money on Golden Dome, and wants to get into the action. For the same reason this is why a lot of space companies have shifted their focus from civilian projects to the military.
Finally, the idea of Golden Dome is perfectly reasonable, as its concept has already been proven both by the U.S.’s Patriot missile system and Israel’s Iron Dome. The implementation however is going to be bad, because the people in Washington being asked to do it have a terrible track record. They routinely waste money and manage projects badly.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

