Under the Council Directive (EU) 2018/822 of 25 May 2018
amending Directive 2011/16/EU as regards mandatory
automatic exchange of information in the field of
taxation in relation to reportable cross-border
arrangements (known as
"DAC6"), EU tax intermediaries such as
tax advisers, accountants and lawyers that design and/or promote
tax planning schemes, have to report potentially
aggressive cross-border tax planning arrangements to
the competent tax authorities.
On 8 December 2022, the Court of Justice of the European Union
("CJEU") held its decision in the
case Orde van Vlaamse Balies, IG, Belgian Association of
Tax Lawyers, CD, JU vs. Vlaamse Regering (Case
C-694/20) regarding the obligations of lawyers under DAC6 (the
Mandatory Disclosure Regime, "MDR").