Tax Transparency — International Framework

Tax transparency refers to the overarching principle by which states, taxpayers, and financial institutions are obligated to disclose and exchange tax-relevant information across borders. The concept has evolved since the early 2000s into a central pillar of international tax policy, actively promoted by organizations such as the OECD, G20, and the European Union.

The framework encompasses several sub-domains: automatic and on-request exchange of information between tax authorities, measures against base erosion and profit shifting (BEPS), reporting obligations for multinational enterprises, and transparency rules for beneficial ownership. Together, these instruments form a global system designed to counteract tax evasion, aggressive tax planning, and abusive tax arrangements.

In practice, tax transparency is embodied by instruments such as the Common Reporting Standard (CRS), FATCA, the OECD BEPS Action Plans, DAC6, and national beneficial ownership registers. These instruments create a global information infrastructure that enables tax authorities to effectively examine cross-border situations and minimize revenue losses.

The roots of international tax transparency trace back to bilateral double taxation treaties of the early 20th century. A decisive turning point came with the 2008 financial crisis, which substantially strengthened political will to combat tax havens and illicit capital flows. The G20 tasked the OECD with developing global standards for information exchange, leading to the adoption of the Common Reporting Standard (CRS) in 2014 and the reform of the Global Forum on Transparency and Exchange of Information for Tax Purposes.

In parallel, the United States pursued a unilateral approach with the Foreign Account Tax Compliance Act (FATCA) enacted in 2010, requiring foreign financial institutions to report on US account holders. Revelations from LuxLeaks (2014), the Panama Papers (2016), and the Pandora Papers (2021) further intensified political pressure and accelerated reforms at both national and international levels. Today, tax transparency forms the bedrock of a multilayered global regulatory framework.

The concept of tax transparency is global in scope and affects a wide range of actors and legal domains:

• States and tax authorities: Obligation for mutual exchange of information under multilateral agreements
• Financial institutions: Banks, insurers, investment funds, and other financial service providers with reporting duties on accounts of foreign taxpayers
• Multinational enterprises: Obligation for Country-by-Country Reporting and disclosure of tax arrangements
• Advisory professions: Lawyers, tax advisors, and auditors as obligated intermediaries for reporting cross-border arrangements
• Beneficial owners: Natural persons behind companies, trusts, and foundations subject to registration requirements
• Digital platform operators: Obligation to report income generated on platforms (DAC7)

The key requirements in the area of tax transparency include:

• Automatic Exchange of Information (AEOI): Annual automatic transmission of financial account information between participating jurisdictions under CRS/FATCA
• Country-by-Country Reporting (CbCR): Multinational groups with revenues exceeding EUR 750 million must disclose profit and tax distribution by country
• Beneficial ownership registers: Transparency registers for identifying natural persons behind legal structures
• Reporting of tax arrangements: Intermediaries and taxpayers must disclose cross-border tax arrangements (DAC6, OECD BEPS Action 12)
• Global minimum taxation: Ensuring an effective minimum tax of 15% for multinational groups (Pillar Two / GloBE)
• Spontaneous exchange of information: Transmission of tax-relevant information without prior request upon identification of specific indicators

1 correction:
- First OECD report on harmful tax practices was 1998, not 2000
1 update:
- Official URL uses outdated OECD website structure
3 clarifications.
1 note.