The Purpose of Mandatory Disclosure Rules

Mandatory Disclosure Rules (MDR) are a key part of the global transparency framework designed to identify and deter arrangements that undermine CRS reporting. Rather than focusing only on taxpayers, MDR targets the ecosystem behind tax planning—the intermediaries, promoters, and structures themselves.

🌍 What MDR Is Designed to Do

Developed by the

Organisation for Economic Co-operation and Development, MDR aims to:

• Define and capture intermediaries involved in CRS avoidance

• Identify those who design, market, or supply such arrangements

• Create early visibility for tax authorities

This shifts the focus from detection after the fact → to prevention and intelligence gathering.

🧠 1️⃣ Identifying Intermediaries

MDR establishes clear rules for who must report, including:

• Advisors designing structures

• Promoters marketing arrangements

• Service providers facilitating implementation

This ensures responsibility does not sit solely with the taxpayer.

🔄 2️⃣ Spontaneous Exchange of Information

Information collected under MDR is shared between jurisdictions through the:

Convention on Mutual Administrative Assistance in Tax Matters

Key feature:

• Spontaneous exchange (not automatic)

• Triggered where a country believes the information may be relevant to another jurisdiction

This allows tax authorities to act quickly across borders.

📊 3️⃣ Intelligence Gathering for Authorities

MDR is fundamentally an intelligence tool.

It enables:

• Identification of emerging avoidance schemes

• Analysis of patterns across jurisdictions

• Early intervention before widespread use

🎯 4️⃣ Practical Outcomes

The information collected allows:

🔍 Targeted Audits

Authorities can focus on high-risk taxpayers and structures

🌐 Global Coordination

The Global Forum on Transparency and Exchange of Information for Tax Purposes can:

• Identify weaknesses in CRS implementation

• Recommend improvements

🚫 Deterrence

By requiring disclosure:

• The marketing of avoidance schemes becomes riskier

• Intermediaries face greater scrutiny

• Aggressive planning is discouraged

🏗️ 5️⃣ Policy Origins

MDR builds on earlier transparency initiatives, including:

• OECD BEPS Action 12

• UK disclosure regimes (e.g., DOTAS / POTAS)

• EU Mandatory Disclosure Rules (DAC6)

It represents the next evolution of global tax transparency.

🎯 Key Takeaway

Mandatory Disclosure Rules are not just about reporting—they are about changing behaviour.

They aim to:

• Expose CRS avoidance early

• Hold intermediaries accountable

• Enable cross-border intelligence sharing

• Deter aggressive tax planning before it spreads

In today’s environment:

It’s not just what you report—it’s what you plan that may need to be disclosed.