KYB vs KYC describes the split between verifying a business customer (Know Your Business) and verifying an individual customer (Know Your Customer). KYC asks "is this person who they say they are?" KYB asks "does this company exist, what does it do, and which people own and control it?"
Why it matters in KYB review
The two are often run by different teams, with different tools and different queues, and the gap between them is where risk hides. A clean entity record with an unverified owner is incomplete. A verified owner attached to an entity nobody has checked is also incomplete. US rules reflect both halves. The Customer Identification Program rule sets the identifying information for individuals and for "a person other than an individual," including documents showing the existence of the entity (31 CFR 1020.220). The Customer Due Diligence rule then requires identifying and verifying the natural persons behind a legal entity customer, with verification that at minimum follows the individual CIP elements (31 CFR 1010.230).
How they differ in practice
| KYC (individual) | KYB (business) | |
|---|---|---|
| Subject | One natural person | A legal entity plus its owners and controllers |
| Core evidence | Government ID, address, date of birth, tax ID | Registry record, formation documents, tax ID, ownership structure, IDs of owners and the control person |
| Typical checks | Document authenticity, liveness, screening | Entity status, ownership chain, business model fit, website, address type, screening of entity and people |
| Where it gets hard | Synthetic or stolen identities | Layered ownership, nominees, foreign entities, mismatched business activity |
What an analyst checks
For a KYB case, the analyst confirms the entity first, then maps ownership to natural persons at the 25% threshold, names one control person, and runs KYC on each individual. The two halves are reconciled: names on IDs match names in the registry and the ownership certification, and addresses and dates line up.
Common pitfalls
- Running KYC on the applicant only. The person filling in the form may be an employee with no ownership. The owners still need verifying.
- Assuming KYB is KYC with more documents. Business model review, website checks and ownership mapping have no KYC equivalent.
- Separate case files. When entity and individual checks live in different systems, nobody sees that the "CEO" on the ID check is not listed as an officer anywhere.
Related terms
KYB (Know Your Business), ultimate beneficial owner, business verification documents, business onboarding review.
How Sweat AI fits
Sweat AI reviews the whole case, entity and people together, and returns one file with the evidence and a recommendation for your team to decide on. See KYB review.
Questions
Does KYB include KYC?
Yes. Once the business is verified, the beneficial owners and the control person are natural persons, and each one goes through identity verification. KYB is the entity work plus KYC on the people behind it.
Which one takes longer?
KYB usually does, because documents vary by jurisdiction and entity type, ownership can run through several layers, and the applicant often has to be asked for more information.
Sources
- 31 CFR 1020.220, Customer identification program requirements for banks (eCFR), accessed 2026-09-30
- 31 CFR 1010.230, Beneficial ownership requirements for legal entity customers (eCFR), accessed 2026-09-30