KYC verifies a person, KYB verifies a legal entity and the humans behind it. Where the regulatory requirements diverge, where they overlap, and how a unified compliance stack runs both without duplicating work.
TL;DR
KYC (Know Your Customer) verifies the identity, source of funds and risk profile of a natural person. KYB (Know Your Business) verifies a legal entity — its registration, ownership structure, ultimate beneficial owners (UBOs), directors and sanctions exposure. KYB is structurally harder because every entity is, in the end, a network of people that also need KYC.
What each process actually checks
KYC — natural persons
- Government-ID capture and authenticity checks
- Biometric liveness and selfie-to-document match
- Address and proof-of-residence verification
- PEP, sanctions and adverse-media screening
- Source-of-funds / source-of-wealth declarations
- Ongoing risk scoring and re-KYC triggers
KYB — legal entities
- Company registry lookup and good-standing check
- Articles of incorporation and licensing evidence
- Ownership graph and UBO discovery (25%+ thresholds)
- Directors and authorised signatories — each one KYC'd
- Entity-level sanctions, SOE and adverse-media screening
- Business risk scoring: jurisdiction, industry, structure
The core differences in one table
| Dimension | KYC | KYB |
|---|---|---|
| Subject | Individual customer | Legal entity + every UBO and director |
| Primary data source | Government ID + biometrics | Company registries, filings, registers of beneficial owners |
| Time to verify | Seconds to minutes | Minutes to days — depends on jurisdiction and structure |
| Hardest part | Liveness fraud and document forgery | Opaque ownership chains and nominee shareholders |
| Regulatory anchors | FATF R.10, EU AMLR, BSA, MAS, FCA | FATF R.24/25, EU AMLR (UBO), FinCEN CTA, MAS |
| Refresh cadence | Event- and risk-triggered | Annual at minimum; on any registry or UBO change |
Regulatory requirements: who asks for what
The same global rule book (FATF Recommendations) underpins both, but the operational asks differ. KYC obligations sit primarily in FATF Recommendation 10 (customer due diligence). KYB obligations sit in FATF Recommendations 24 and 25 (transparency of legal persons and arrangements) and in jurisdictional UBO regimes — notably the EU's AMLR/AMLD framework, the US Corporate Transparency Act and the UK's PSC register.
- EU AMLR (2027) — harmonised UBO thresholds, central registers interconnected via BORIS, and explicit obligations for obliged entities to identify and verify UBOs, not just collect declarations.
- US FinCEN BOI / CTA — most US legal entities must file beneficial ownership information directly with FinCEN; obliged FIs verify against that data set.
- FATF Travel Rule — applies to KYC of originators and beneficiaries on virtual asset transfers, but is increasingly extended to KYB of counterparty VASPs.
- MAS, FCA, CySEC, MGA — jurisdiction-specific overlays; CySEC and MGA in particular tighten KYB for online trading and iGaming licensees.
Where KYB and KYC overlap (and why teams duplicate work)
KYB contains KYC. You cannot finish KYB without running KYC on every UBO, every director and every authorised signatory of the entity. In practice most compliance teams run these as two disconnected workflows, with two different vendors, two evidence stores and two audit trails — which is where the duplication, the gaps and the regulator findings start.
"If your KYB evidence and your KYC evidence on the same UBO don't reconcile, neither file is defensible. The regulator will treat the conflict as the truth."
Running both on one unified stack
The point of a unified compliance platform is to make this overlap a feature rather than a leak. On ComplianceSuite.ai, a single entity record fans out into the people it depends on, and every check — identity, screening, risk score, case — attaches back to the same audit trail.
- KYB discovers the ownership graph and resolves UBOs from 190+ registries.
- KYC verifies each resolved UBO and director with ID, liveness and address checks.
- AML screening runs entity-level and person-level against sanctions, PEP and adverse-media lists in a single sweep.
- Risk scoring blends entity factors (industry, jurisdiction, structure) with person factors (PEP, SOW) into one customer-of-record score.
- Case management routes edge cases — opaque structures, sanctioned UBOs, document conflicts — to a single queue with the full evidence pack pre-attached.
A practical KYB-plus-KYC checklist
- Entity registry pull — name, number, jurisdiction, status, filings.
- Ownership graph — every shareholder > 25% drilled to a natural person; nominee and trust structures flagged.
- KYC on every UBO and director — ID, liveness, address, PEP and sanctions in one workflow.
- Entity-level screening — sanctions, SOE, adverse media on the legal person itself.
- Risk-based EDD triggers — high-risk jurisdiction, complex structure, high-cash industry, PEP-linked UBO.
- Single audit pack — entity + person evidence reconciled and time-stamped for the regulator.
See it in your stack
If you're running KYB and KYC on separate vendors today, the fastest win is usually a shared evidence layer rather than a re-platform. Book a demo and we'll show how ComplianceSuite reconciles them on a single record — or read the Know Your Customer and KYB product pages.