According to a most recent judgment of the Supreme Tax Court, a taxpayer is not generally entitled to disclosure of an anonymous report received by the tax office that accuses him of misconduct in tax matters. The right to obtain information under data protection law does not confer any further rights in this respect.
On 13 March 2018, the ECOFIN Council, composed of the EU-28 Finance Ministers, reached political agreement on a Council Directive amending Directive 2011/16/EU on administrative cooperation in the field of taxation as regards mandatory automatic exchange of information in the field of taxation in relation to reportable cross-border arrangements in order to disclose potentially aggressive tax planning arrangements (also commonly referred to as DAC6).
