Doug McHoney (PwC’s International Tax Services Global Leader) is joined by Rebecca Lee, an International Tax Principal in PwC’s Washington National Tax Services practice. Rebecca specializes in financial transactions and digital assets and is one of the most frequent guests on the podcast. Doug and Rebecca discuss the long-awaited final and proposed regulations under Section 987, which deal with foreign currency gain or loss for qualified business units (QBUs). They dive into key topics, including methods for calculating 987 gains and losses, the transition rules, applicability dates, and the implications of different election options. They also cover major changes from the proposed to final regulations, including adjustments to the treatment of Section 988 transactions within a QBU, tax accounting considerations, the controversial suspended loss rules, and how partnerships are impacted.