Understanding MDR Hallmarks

Under Mandatory Disclosure Rules (MDR), not every arrangement is reportable. Instead, reporting is triggered when an arrangement exhibits specific characteristics known as “hallmarks.”

These hallmarks act as risk indicators, helping tax authorities identify structures that may involve tax avoidance or attempts to bypass transparency rules.

🔍 What Are MDR Hallmarks?

Hallmarks are defined features or patterns that suggest an arrangement could be used to:

• Avoid tax

• Circumvent reporting obligations (e.g., CRS)

• Obscure beneficial ownership

If an arrangement meets one or more hallmarks, it may need to be reported to tax authorities.

🧠 1️⃣ Generic Hallmarks

These are broad indicators commonly found in marketed or packaged schemes.

Examples include:

• Confidentiality clauses preventing disclosure of the structure

• Success-based fees, where advisors are paid based on the tax advantage achieved

• Standardized structures offered to multiple clients

👉 These hallmarks focus on the commercial behavior of promoters and intermediaries.

🌍 2️⃣ Specific Hallmarks

These target particular types of arrangements that raise tax or transparency concerns.

Examples include:

• Cross-border payments between related entities

• Acquisition of loss-making companies to offset profits

• Structures designed to disguise beneficial ownership

• Arrangements exploiting mismatches between jurisdictions

👉 These hallmarks focus on the technical design of the arrangement.

⚖️ 3️⃣ The Main Benefit Test (MBT)

Not all hallmarks automatically trigger reporting.

For certain hallmarks, reporting is required only if:

One of the main benefits of the arrangement is obtaining a tax advantage

This is known as the Main Benefit Test (MBT).

🧩 How MBT Works

• If the tax advantage is incidental → may not be reportable

• If the tax advantage is a key driver → likely reportable

👉 MBT introduces a purpose-based test, not just a structural one.

⚠️ Why Hallmarks Matter

Hallmarks are central to MDR because they:

• Define what must be reported

• Trigger obligations for intermediaries and taxpayers

• Enable tax authorities to identify high-risk arrangements early

They shift the system from:

• Technical compliance → to intent and risk assessment

🎯 Key Takeaway

Under MDR:

• Hallmarks are red flags, not automatic violations

• They identify arrangements that may require disclosure

• Some hallmarks apply automatically

• Others depend on the Main Benefit Test

In today’s environment:

If a structure looks like it was designed to gain a tax advantage, it may need to be reported—even if it is technically legal.