Council Directive (EU) 2016/881 of 25 May 2016 (DAC4) provides for automatic exchange of information (AEOI) in the field of taxation in relation to country-by-country reports. It is the third amendment to Directive 2011/16/EU in Administrative Cooperation in Direct Taxation.
The main goal of DAC4, alongside information supplied by multinational enterprise groups (MNEs) for local/master files, is to provide EU tax authorities with information on the structure, transfer-pricing policies and internal transactions of MNE groups.
This information is used by tax authorities to check for risks of tax abuse due to aggressive tax planning and other base-erosion and profit-shifting risks related to the MNE group.