CBO estimates that plans for U.S. nuclear forces, as described in the fiscal year 2021 budget and supporting documents, would cost $634 billion over the 2021–2030 period, $140 billion more than CBO’s 2019 estimate for the 2019–2028 period.
May 2021
This update of CBO’s 2016 primer on the structure of the U.S. military describes the size, functions, and operation and support costs of every major element of the armed forces.
The federal budget deficit was $1.9 trillion in the first seven months of fiscal year 2021, CBO estimates—$449 billion more than the deficit recorded during the same period last year.
CBO reports annually on programs whose authorizations of appropriations have already expired or will expire.