Mandatory Disclosure Rules

Mandatory Disclosure Rules (MDR) refer to regulations that require taxpayers, advisors, or intermediaries to disclose certain tax arrangements to tax authorities. These rules aim to combat aggressive tax planning, promote transparency, and enable authorities to react swiftly to potentially harmful tax schemes. MDRs typically target cross-border arrangements that could result in tax avoidance or pose significant tax risks.

Introduced in many jurisdictions, MDRs are a key component of the global tax transparency agenda, reinforced by initiatives like the OECD’s Base Erosion and Profit Shifting (BEPS) Action 12. By compelling disclosure, MDRs provide tax authorities with early information on tax planning strategies, allowing them to close loopholes, assess risks, and apply appropriate countermeasures. MDRs can cover a wide range of tax arrangements, including transfer pricing structures, hybrid mismatches, and transactions involving secrecy jurisdictions.

Key Elements of Mandatory Disclosure Rules

  1. Scope and Coverage: MDRs define which tax arrangements must be reported, such as cross-border transactions that meet specific hallmarks indicating tax avoidance.
  2. Reporting Obligations: The rules outline who must disclose arrangements—taxpayers, intermediaries, or both—and the timelines for reporting.
  3. Hallmarks: Indicators or characteristics of a tax arrangement that trigger disclosure, such as confidentiality agreements or circular transactions.
  4. Penalties for Non-Compliance: Significant fines and penalties can be imposed for failure to report within the stipulated timeframe or for providing false or misleading information.
  5. Confidentiality and Use of Information: Although MDRs require disclosure, tax authorities are usually obligated to maintain the confidentiality of reported arrangements, using the information solely for tax risk assessment and enforcement purposes.

Real-World Examples of Mandatory Disclosure Rules

Example 1: The EU’s DAC6 Regulations

The European Union’s Directive on Administrative Cooperation (DAC6) is a prominent example of MDR. It mandates intermediaries and, in some cases, taxpayers to report cross-border arrangements that exhibit certain hallmarks of tax avoidance. For instance, a multinational company using a hybrid mismatch arrangement to reduce its effective tax rate must disclose the arrangement to tax authorities in the EU. The information is then shared among EU member states to ensure coordinated action against tax avoidance. Failure to comply with DAC6 regulations can result in substantial penalties, highlighting the importance of understanding and adhering to MDRs.


Example 2: MDR in South Africa

In South Africa, the Tax Administration Act has incorporated Mandatory Disclosure Rules to tackle aggressive tax planning. Taxpayers or intermediaries must disclose reportable arrangements that involve unusual tax benefits or certain fee structures. For example, if a company engages in a complex cross-border financing transaction designed to generate tax benefits, it must report this arrangement to the South African Revenue Service (SARS). The aim is to provide SARS with insight into sophisticated tax planning schemes. The enforcement of these rules has led to improved tax compliance and has deterred the use of aggressive tax planning strategies.


Example 3: The United States’ Reportable Transaction Rules

The United States employs its own form of MDR under the Internal Revenue Code, which requires taxpayers and advisors to disclose certain transactions to the IRS. One common example involves transactions of interest, such as those designed to generate tax losses without economic substance. If a corporation uses a loss-generating transaction to offset substantial gains, both the taxpayer and the promoter of the transaction may have to file detailed disclosures with the IRS. Non-compliance can result in severe penalties, including monetary fines and potential criminal charges. These rules have strengthened the IRS’s ability to monitor and curtail tax avoidance practices.