What Is BORIS? The EU’s Beneficial Ownership Register Interconnection System Explained

The Problem BORIS Was Built to Solve

Every compliance officer running KYB checks across Europe has hit the same wall. You need to verify the ultimate beneficial owner of a company in Germany. Then another in France. Then one in Latvia.

Three countries. Three different registers. Three different access rules, languages, and data formats.

This is the fragmentation problem the European Commission set out to fix with BORIS.

BORIS stands for Beneficial Ownership Registers Interconnection System. It’s the EU’s attempt to link all national UBO (Ultimate Beneficial Owner) registers into a single, searchable system hosted on the European e-Justice Portal.

The idea is simple: one search, access to beneficial ownership data across all EU Member States, plus Iceland, Liechtenstein, and Norway.

The reality? It’s more complicated.

How BORIS Works

BORIS is a decentralised system. It doesn’t store beneficial ownership data in one central database. Instead, it connects to the national registers that each EU Member State is required to maintain under anti-money laundering directives.

Here’s the process:

The system was established under EU Implementing Regulation 2021/369, which set the technical specifications for how national registers connect to the central platform.

What Data Does a BO Record Include?

Every national register connected to BORIS must provide a minimum set of fields for each beneficial owner:

Individual Member States can expand beyond this minimum. Austria and Sweden, for example, provide more complete datasets than most. But the baseline is intentionally narrow, reflecting privacy concerns that have shaped the entire system.

The Legal Timeline Behind BORIS

BORIS didn’t appear overnight. It’s the product of a decade of evolving EU anti-money laundering legislation:

AMLD4 (2015): The Foundation

The 4th Anti-Money Laundering Directive required all EU Member States to create central registers of beneficial ownership information. This was the first time the EU mandated that companies identify and register their UBOs. Access was limited to competent authorities and obliged entities conducting due diligence.

AMLD5 (2018): Public Access

The 5th Directive went further. It required Member States to make beneficial ownership registers publicly accessible. Anyone could look up who owned a European company. AMLD5 also mandated the interconnection of these national registers — the legal origin of BORIS itself.

For compliance teams, journalists, and civil society, this was a breakthrough. Ownership transparency across the EU was finally becoming a practical reality.

The 2022 CJEU Ruling: Public Access Reversed

Then in November 2022, the Court of Justice of the European Union issued a landmark ruling. In the joined cases WM and Sovim SA versus Luxembourg Business Registers, the Court struck down the blanket public access requirement.

The Court’s reasoning: giving any member of the general public unrestricted access to beneficial ownership data was not proportionate. It represented a serious interference with the right to privacy and data protection under the EU Charter of Fundamental Rights.

The impact was immediate. Several countries closed or restricted their registers. Czechia, for example, fully shut its public register in December 2025. Others left their systems open while scrambling to define new access rules.

6AMLD (2024): Legitimate Interest Access

The EU’s response came in May 2024 with the adoption of the 6th Anti-Money Laundering Directive. Rather than restoring full public access, 6AMLD introduced a “legitimate interest” framework.

Under this model, access to UBO registers is available to:

• Competent authorities and Financial Intelligence Units (unrestricted access)

• Obliged entities conducting customer due diligence (banks, financial institutions)

• Journalists, civil society, and academics working on AML-related topics (presumed legitimate interest)

• Third-country obliged entities subject to AML requirements (case-by-case)

Member States have until July 2026 to transpose the operational rules. From November 2026, registers must respond to legitimate interest requests within 12 working days.

Key Compliance Deadlines

Where BORIS Stands Today

Let’s be direct about the current state of BORIS. The system is live. But it’s far from complete.

As of early 2026, only 17 of 30 EU/EEA countries have completed the technical steps to provide data through the platform:

Key: Green = Live on BORIS  |  Amber = In testing  |  Grey = Not connected  |  Red = Closed/restricted

Practical Limitations

Even where BORIS works, compliance teams face real friction:

How the EU Defines a UBO

Under 6AMLD, the definition of a beneficial owner is standardised across the EU for the first time through a directly applicable regulation (not just a directive).

A UBO is any individual who:

• Holds more than 25% of shares, voting rights, or ownership interest in an entity (directly or indirectly)

• Exercises control through other means, such as rights to appoint or remove board members, veto rights, or influence through agreements or family ties

• If no individual qualifies, senior managing officials may be designated as “pseudo-UBOs”

For high-risk sectors, Member States can apply a lower threshold — as low as 15% — with European Commission approval.

Indirect ownership must be calculated through the full ownership chain. This is where complexity multiplies, and where BORIS’s lack of ownership chain mapping creates real gaps for due diligence teams.

BORIS vs. BRIS: What’s the Difference?

BORIS is sometimes confused with BRIS, the Business Registers Interconnection System. They’re related but serve different purposes:

For compliance teams doing full KYB verification, you typically need data from both systems — company registration details from BRIS and ownership details from BORIS or national registers.

What This Means for Compliance and Risk Teams

If you’re responsible for KYB, AML compliance, or counterparty due diligence in Europe, here’s the practical reality:

BORIS is a step forward, not a solution. It standardises how beneficial ownership data is exchanged between EU registers. That’s valuable. But it doesn’t eliminate the need to navigate individual country registers, deal with access restrictions, or manually piece together ownership chains.

The July 2026 deadline matters. If your organisation relies on beneficial ownership data for due diligence, you need to understand how 6AMLD changes access in each jurisdiction where you operate.

Automation is still limited. BORIS provides no API, no bulk access, and no machine-readable output. If you’re screening hundreds or thousands of counterparties, you’ll need commercial data providers that aggregate and structure this information from the source registers directly.

Data quality varies. The accuracy of beneficial ownership data depends entirely on what each national register collects and verifies. Some countries have robust verification processes. Others rely on self-declaration with minimal checks.

Looking Ahead: BORIS, BARIS, and the EU AML Package

BORIS is just one piece of a much larger EU transparency infrastructure currently being built.

The 2024 AML package also establishes:

• BARIS (Bank Account Register Interconnection System): Centralised access to bank accounts, payment accounts, securities accounts, crypto-asset accounts, and safe-deposit boxes. Target launch: July 2029.

• AMLA (Anti-Money Laundering Authority): A new EU-level supervisory body with direct oversight of high-risk obliged entities.

• Real estate ownership access points: Member States must establish single access points for real estate ownership information by July 2029.

• A directly applicable AML Regulation: Unlike directives (which require national transposition), this regulation applies identically across all Member States, reducing the fragmentation that has plagued UBO compliance to date.

The direction is clear: the EU is building toward a comprehensive, interconnected system for tracking ownership, finances, and assets across all 27 Member States. BORIS is the first live piece of that puzzle.

For compliance teams, the message is equally clear. The regulatory infrastructure is moving fast. The data standards are tightening. And the organisations that build their due diligence processes around verified, registry-sourced data today will be best positioned as these systems mature.

The Bottom Line

BORIS represents a genuine advance in EU beneficial ownership transparency. For the first time, there’s a single entry point to search UBO registers across multiple Member States.

But it’s still early. Coverage is incomplete. Data is locked in PDFs. Access rules are fragmented. And for compliance teams running checks at scale, BORIS alone isn’t enough.

The organisations winning at KYB and AML compliance right now aren’t waiting for BORIS to be perfect. They’re sourcing beneficial ownership data directly from government registries worldwide, building their verification workflows on first-party data, and staying ahead of the regulatory curve.

That’s the gap BORIS is trying to close. And it’s the gap that smart compliance teams are already filling with better data infrastructure.

Frequently Asked Questions

1. What does BORIS stand for?
   BORIS stands for Beneficial Ownership Registers Interconnection System. It is the EU’s platform for linking national UBO registers across all Member States, hosted on the European e-Justice Portal.

2. How many EU countries are connected to BORIS?
   As of early 2026, 17 of 30 EU/EEA countries have completed the technical steps to provide data through BORIS. Countries with searchable records include Austria, Denmark, Greece, Latvia, Malta, and the Netherlands.

3. Is BORIS free to use?
   Not always. Fees vary by country. Some national registers provide beneficial ownership records for free, while others charge per lookup. Competent authorities and FIUs are guaranteed free access under 6AMLD from July 2026.

4. What is the difference between BORIS and BRIS?
   BORIS provides beneficial ownership data — who ultimately owns or controls a company. BRIS provides company registration data such as legal form, address, and directors. BRIS is publicly accessible and covers all EU Member States. BORIS has restricted access and incomplete coverage.

5. Who can access UBO data through BORIS?
   Under 6AMLD, access is granted to competent authorities and FIUs (unrestricted), obliged entities conducting customer due diligence, and persons with a legitimate interest including journalists, civil society, and academics working on AML-related topics.

6. What is the 25% UBO threshold in the EU?
   Under 6AMLD, any individual holding more than 25% of shares, voting rights, or ownership interest in an entity — directly or indirectly — is classified as a UBO. For high-risk sectors, the threshold can be lowered to 15% with European Commission approval.

7. Why did the EU Court of Justice restrict public access to UBO registers?
   In November 2022, the CJEU ruled that blanket public access to UBO data was disproportionate, representing a serious interference with privacy and data protection rights under the EU Charter of Fundamental Rights. This led to the current legitimate interest access model.

8. Does BORIS provide an API for bulk UBO data access?
   No. BORIS does not offer an API, bulk download, or machine-readable data output. Records are delivered as static PDF extracts, one company at a time. Organisations requiring UBO data at scale typically rely on commercial data providers that aggregate information directly from government registries.

9. What is the deadline for 6AMLD UBO register compliance?
   Member States must fully transpose 6AMLD operational rules by July 2026. From November 2026, registers must respond to legitimate interest requests within 12 working days. Full compliance is required by July 2027.

10. Can non-EU companies access beneficial ownership data through BORIS?
    Yes, under certain conditions. 6AMLD recognises that entities subject to AML requirements in third countries have a legitimate interest in accessing EU beneficial ownership data. However, access is granted on a case-by-case basis and rules vary by Member State.