According to an update from the OECD, Vietnam signed the Multilateral Competent Authority Agreement on the Exchange of Country-by-Country Reports (CbC MCAA) on 3 January 2025. Vietnam's CbC reporting requirements apply from 1 May 2017 for MNE groups meeting a consolidated group revenue threshold of VND 18 trillion, with reports due within 12 months following the end of the reporting fiscal year from 2020 (previously required preparation within 90 days and submission within 30 days of request).