UK HMRC has issued a notice via email to businesses that may be in scope of the Domestic Top-up Tax (DTT) and Multinational Top-up Tax (MTT), which also includes guidance on registration, reporting obligations, the GloBE Information Return, the UK Self Assessment return, and other related matters. --- Update from HMRC Dear customer, Our information suggests that your business may be in scope of Domestic Top-up Tax (DTT) and Multinational Top-up Tax (MTT). The UK Government introduced these taxes from 31 December 2023. Please check how these taxes may affect your group and what you need to do to comply...