Know Your Business (KYB) is the process of verifying the identity, legitimacy, and ownership of a business entity before or during a commercial relationship, the business-to-business counterpart to KYC. It confirms a company is real, legally registered, and not a front for financial crime, and it identifies the real people who ultimately own or control it.

As B2B and platform businesses onboard company customers digitally, KYB has become as important (and as fraud-prone) as consumer KYC.

What KYB verifies

• Business existence and registration, confirming the entity is legally registered and in good standing, via corporate registries.
• Beneficial ownership, identifying the ultimate beneficial owners (UBOs), the real people behind the company, which regulations increasingly require.
• Authorized representatives, verifying that the individuals acting on behalf of the business are authorized (often via consumer-style IDV of those individuals).
• Risk and sanctions screening: checking the business and its owners against watchlists, sanctions, and adverse media.

Why KYB is hard

Businesses are more complex than individuals. Ownership can be layered through holding companies and trusts, deliberately obscuring the beneficial owners. Shell companies exist precisely to hide identity. Registry data varies in quality across jurisdictions. This complexity is what makes UBO discovery the central challenge of KYB, and why fraudsters use opaque structures to launder money or access services.

KYB in practice

Effective KYB blends business-data verification (registries, ownership records) with individual identity verification of owners and representatives, plus ongoing monitoring. Automating it (pulling registry data, resolving ownership, screening watchlists, and running IDV on the humans involved) turns a slow, manual, weeks-long process into something far faster, which matters for B2B onboarding conversion just as it does in consumer flows. For platforms and financial institutions serving businesses, strong KYB is both a compliance requirement and a defense against business-level fraud.

The beneficial-ownership challenge

The hardest part of KYB is finding the real humans behind a company, the ultimate beneficial owners (UBOs). Ownership can be deliberately obscured through layers of holding companies, trusts, and cross-border structures, and shell companies exist precisely to hide who’s in control. Regulations increasingly require institutions to identify UBOs above a threshold of ownership or control, but the data to do so is fragmented across registries of varying quality and jurisdictions with different disclosure rules. Untangling a layered structure to reach the people at the top is difficult, and it’s exactly where financial crime hides.

This is why effective KYB blends corporate-data verification with individual identity verification: confirm the business exists and is legitimate, resolve its ownership structure, then run consumer-grade IDV on the actual people who own or represent it. Automating that chain (pulling registry data, resolving ownership, screening against sanctions and watchlists, and verifying the individuals) turns a slow, manual, error-prone process into something fast enough not to sink B2B onboarding. The businesses that get KYB right treat UBO discovery as the core problem, not an afterthought.

Frequently asked questions

What does KYB stand for?

Know Your Business.

How is KYB different from KYC?

KYC verifies individual customers; KYB verifies business entities, including their legitimacy and beneficial owners.

What is a beneficial owner?

The real person who ultimately owns or controls a business, a core focus of KYB.

Related: Know Your Customer (KYC) · Anti-Money Laundering (AML) · Identity Verification (IDV) · Digital Onboarding