KYB (Know Your Business): the complete guide to verify your business customers

KYB, or Know Your Business, is the corporate equivalent of KYC (Know Your Customer). It is the process of identifying and verifying the companies with which you conduct business. In 2026, this issue takes on new importance: the European AML package strengthens due diligence requirements for business clients, while companies are being given greater responsibility in combating money laundering and terrorist financing.

Any organization that provides services to ther businesses—banks, insurance companies, payment service providers, B2B marketplaces, fintechs—must implement a robust and auditable KYB process. This obligation is not merely regulatory compliance; it is also a means of protecting your business against fraud, reputational, and sanctions risks.

What is KYB?

KYB is a process of collecting, verifying, and analyzing information about a business client. It aims to establish the true identity of the legal entity and assess the risks it presents to your organization.

The regulatory framework for KYB is rooted in European anti-money laundering directives. The 4th Anti-Money Laundering Directive (4AMLD) laid the foundations in 2015, followed by the 5th (5AMLD) in 2018, which extended obligations to the private sector and introduced the concept of beneficial ownership. In 2024, the Anti-Money Laundering Regulation (AMLR) further harmonizes practices across the European Union and strengthens due diligence requirements.

The fundamental difference between KYC vs KYB lies in the type of client: KYC applies to individuals, while KYB applies to legal entities. You must therefore adapt your approach based on the type of client you're onboarding.

Who Must Comply with KYB?

KYB obligations apply broadly across the European economy. Credit institutions, banks, and neobanks must apply KYB to all their business clients. Insurance companies, payment service providers (PSPs), and B2B e-commerce platforms are equally subject to this requirement.

Beyond these traditional sectors, professional service providers—lawyers, accountants, restructuring consultants—are progressively becoming subject to these obligations. B2B marketplaces that connect professional sellers must also verify them. Fintechs offering B2B services face the same requirements.

This expansion of obligations reflects a political will to eliminate blind spots in the AML system. Every actor in the economic chain becomes responsible for the soundness of the data they transmit.

Essential Data to Collect

A rigorous KYB process begins with systematic collection of documents and information. You must first formally identify the company: its official business name, legal status (LLC, limited partnership, corporation, sole proprietor, etc.), and registration number.

The business registry extract or its equivalent in other European countries remains the cornerstone document. This certificate issued by the commercial court demonstrates registration and provides basic information: registered office, business activity, share capital, and the names of managers. It should be current, ideally issued within the last three months.

Next, you must explore the ownership structure of the company. Who holds the shares or partnership interests? Are there institutional shareholders or holding companies? This information is crucial for identifying true decision-makers and economic beneficiaries.

The due-diligence dimension also requires knowledge of legal representatives, managers, and board members. Their identities, addresses, and backgrounds must be verified. Finally, a solid understanding of the company's actual economic activity and financial position completes this initial phase.

Beneficial Owners (UBO): A Critical Link

The identification of beneficial owners, or UBO, has become central to KYB. A beneficial owner is a natural person who directly or indirectly controls a company, typically beyond a 25% threshold of shares or voting rights.

This requirement addresses a simple but essential objective: prevent bad actors from hiding behind corporate structures. By identifying true owners, authorities can better assess the risks associated with a transaction or business relationship.

In France, the Register of Beneficial Owners (RBE), maintained by commercial court registries, centralizes this information. Since 2017, every company has been required to declare its beneficial owners in the RBE. This obligation has strengthened: the register has become more transparent and facilitates access by competent authorities.

For deeper insight, the dedicated article on beneficial owners and KYB identification explains how to conduct this identification and navigate complex cases: pyramidal structures, nested holdings, foreign trusts.

The KYB Process Step by Step

An effective KYB follows a logical progression. The first phase is documentary collection. The business client submits required documents: bylaws, business registry extract, ID of legal representatives, beneficial owner declaration. This phase must be complete and thorough.

Next comes public data verification. The information provided is cross-checked against official registries: business registry databases for registration data, beneficial owner registers, professional directories, and legal publication databases. This step identifies inconsistencies or red flags.

The third step is UBO identification. Once the ownership structure is understood, beneficial owners are specifically identified and their profiles verified. This step is critical and must be exhaustively documented.

Then comes risk score calculation. Based on information collected, business sector, UBO profiles, country of operation, and other factors, a risk level is assigned to the company. This scoring guides subsequent enhanced due-diligence steps if necessary.

Next is the onboarding decision. Will you accept this company as a client? Do you need to request additional documents or enhanced due diligence? Or is the risk too high to proceed?

Finally, the process does not end there: continuous monitoring is mandatory. Information must be updated regularly, particularly when there are changes in ownership structure, business activity, or suspicious behavior.

AML/CFT Compliance and Legal Obligations

KYB is part of a broader framework for combating money laundering and terrorist financing (AML/CFT). Customer due diligence is only one component. You must also maintain a complete AML program, which includes transaction monitoring and reporting of suspicious activity to authorities.

In many countries, financial regulators oversee these obligations. Financial intelligence units receive suspicious activity reports. Security regulators intervene for investment service providers.

Penalties for non-compliance can be severe: administrative fines of several million euros, prohibition from operating, or criminal prosecution. Recent regulatory actions have shown that the absence of KYB or inadequate KYB directly exposes your organization to these risks.

To deepen your understanding of the regulatory framework, you can consult official texts on EUR-Lex, the official database of European law, which centralizes the AML directives and regulations applicable in all Member States.

Automating KYB with Meelo

Implementing a manual KYB process is time-consuming and error-prone. Each business client requires careful investigation: document verification, registry searches, beneficial owner tracking. For organizations processing hundreds or thousands of new business clients annually, this quickly becomes unsustainable.

Meelo automates your entire KYB workflow. The Meelo KYB platform extracts data directly from official business registries: corporate databases, beneficial owner registries, legal publications, and other recognized sources. You gain unified access to information without navigating dozens of different portals.

Automatic UBO identification is one of Meelo's core strengths. The platform analyzes the ownership structure and identifies beneficial owners in compliance with legal standards. This ordinarily tedious step is completed in seconds.

Meelo calculates a dynamic risk score in real-time that reflects the probability of a problematic relationship. This scoring considers the nature of the activity, the company's history, geographic location, and other parameters. You receive a comprehensive profile that accelerates your decision-making.

Every action—collection, verification, scoring—generates an immutable audit trail. This traceability is not only required by law; it also protects you in the event of regulatory oversight.

Deployment is rapid: between 3 and 10 days in API mode, depending on your infrastructure. The Meelo team guides your implementation so the solution integrates seamlessly with your existing ecosystem. In the end, you reduce business client verification time by 80% while strengthening compliance.

To discover how Meelo adapts to your needs, explore the Meelo KYC platform which complements KYB for complete onboarding, or review our case studies and detailed demonstrations.

Conclusion

KYB is no longer optional—it is an absolute necessity. In 2026, regulatory requirements are refined, supervisor checks intensify, and penalties for failure increase. But beyond compliance, good KYB is a strategic asset: it reduces fraud risk, protects your reputation, and enables you to accelerate B2B client acquisition with confidence.

Whether you are building a KYB program from scratch or seeking to optimize existing processes, automation is the key. Meelo provides an end-to-end solution that transforms business verification into a seamless, transparent, and impeccably compliant process.

Request a demo of the Meelo KYB platform and discover how to reduce verification timelines while strengthening your compliance posture.

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