CBO analyzes the recent availability, use, and operating and support costs of F-35 fighter aircraft. As F-35s have aged, their availability and use have decreased and have been lower than those of other fighter aircraft of the same age.

    

CBO estimates that enacting H.R. 1 and making 16 tax provisions within H.R. 1 permanent would raise debt-service costs by $687 billion over the 2025–2034 period and increase the bill's cumulative deficit effect to $4.5 trillion.

    

CBO's interactive tool allows users to explore how H.R. 1, the One Big Beautiful Bill Act, as passed by the House of Representatives on May 22, 2025, would affect the economic resources available to households grouped by income.

    

CBO responds to a request for an analysis of the distributional effects of H.R. 1, the One Big Beautiful Bill Act, and updates the preliminary analysis it provided in a letter dated May 20, 2025.