This study explores two main research questions at the intersection of taxation and sustainable development for multinational companies. First, it examines whether there is a regulatory or standards-based framework in Europe that consistently requires companies to report on tax policies, metrics, controls and risk management. The author reviews both hard law (regulatory requirements) and soft law (best practice standards) to determine if there is a common understanding of tax transparency reporting obligations. Second, the study investigates whether existing frameworks result in companies providing meaningful information on their tax practices, and, if not, identifies actions needed to improve future reporting. To answer this, the author evaluates what companies actually report, how their tax disclosures are assessed, and which enhancements could make these disclosures more informative and effective. An empirical survey involving European IFA branches supports the analysis, offering insights into current reporting practices and ways to enhance tax transparency in alignment with ESG objectives.