Executive summaryIn its FY2023 explanation of the Biden Administration's revenue proposals (Budget), the United States (US) Treasury offers several new international tax proposals that build upon the Build Back Better Act (BBBA), which was passed by the US House of Representatives in November 2021 but stalled in the US Senate. (For discussion of the BBBA's international provisions, see EY Global Tax Alert, US: Latest version of Build Back Better proposal would modify international tax proposals in House Ways and Means bill, dated 10 November 2021.) The Budget treats the BBBA as enacted, with its revenue estimates scored against the BBBA as the...