KYC, KYB and requests for information are three parts of one job: knowing who your customers are and being able to prove it. This guide explains how KYC KYB compliance fits together for a fintech, where RFIs come in, and how to run the three as a single programme rather than disconnected checks.
The three building blocks
Each element answers a different question, and a sound programme uses all three.
- KYC (Know Your Customer) verifies an individual: confirming identity from a document and a biometric check, and screening the person for risk.
- KYB (Know Your Business) verifies a legal entity: confirming it exists, mapping who owns and controls it, and screening the entity and its owners. Because a company is controlled by people, KYB almost always contains KYC on the beneficial owners. The mechanics are covered in What Is KYB? Understanding Business Verification and Risk.
- RFI (Request for Information) is the follow-up. When a check raises a question the data cannot answer, you ask the customer for more, for example the source of funds, a document explaining an ownership layer, or proof of a business activity.
Where RFIs fit in the flow
An RFI is not a failure of onboarding, it is part of it. Most customers pass automated checks, but a share raise questions: an ownership structure that does not resolve cleanly, a mismatch between stated and observed activity, or a screening hit that needs context. Rather than reject outright, you issue an RFI.
The discipline is to make RFIs specific, time-bound and logged. Ask for the exact document or explanation you need, set a deadline, and record both the request and the response. A vague or repeated RFI frustrates customers and drops completion rates, while a precise one resolves the question and leaves an audit trail. Screening hits are a frequent trigger, so an RFI process works closely with your AML Screening Software: How It Works and What to Look For.
Running it as one programme
Fintechs get into trouble when KYC, KYB and RFIs live in separate tools that do not share state. An analyst then re-keys data, misses that a beneficial owner already failed an individual check, or cannot see the history of a case. Treating the three as one workflow avoids this.
A single case should carry the entity, its owners, every screening result and every RFI, with one risk score that updates as evidence arrives. When you assess verification vendors, this joined-up view is one of the criteria in The Best KYB Providers in 2026: How to Compare.
The payoff is not only tidier operations. An examiner reviewing your programme will ask why a customer was accepted and expect to see the answer reconstructed from a single record: what was checked, what the RFI asked, what the customer supplied and how the risk score moved. Scattered tools make that reconstruction slow and error-prone, which is itself a finding. One case record turns an audit request into a lookup rather than an investigation.
KYC vs KYB vs RFI at a glance
| Element | Subject | Core question | Typical output |
|---|---|---|---|
| KYC | Individual | Is this person who they claim? | Verified identity, screening result |
| KYB | Legal entity | Is this business real and who controls it? | Ownership map, entity screening |
| RFI | Either | What does the data not yet explain? | Documented answer, updated risk score |
The regulatory direction of travel
Rules are tightening, and a programme built only for onboarding will struggle. For fintechs, KYC KYB compliance increasingly depends on maintaining accurate ownership records, documenting decisions and reviewing customer risk beyond initial onboarding. In the European Union, a single anti-money laundering rulebook centred on the Anti-Money Laundering Regulation applies from 10 July 2027, supervised by the new Authority for Anti-Money Laundering, which became operational on 1 July 2025. The beneficial ownership threshold is set at 25% or more, with scope for the European Commission to lower it to 15% for higher-risk categories.
The practical message is consistent across regimes: look harder at ownership, document how you reached each conclusion, and refresh it over time. RFIs and ongoing monitoring are how you meet that standard after the account opens, not just at the gate.
For a fintech scaling across borders, this has a design consequence. The same customer may fall under different thresholds and evidence expectations depending on where it operates, so a rigid, one-size onboarding flow will either over-collect from low-risk customers or under-collect from high-risk ones. A programme that varies its checks and its RFI triggers by jurisdiction and risk band handles that variation without rewriting the flow each time a new market opens.
A Practical KYC, KYB and RFI Checklist
- Verify identity and entity from authoritative sources, not customer say-so.
- Resolve ownership to the applicable threshold and record how.
- Screen the individual, the entity and each owner against sanctions, PEP and adverse-media data.
- Trigger a specific, time-bound RFI when a check leaves a question open.
- Keep one case record with a single, updatable risk score and a full audit trail.
- Re-check on a risk-based schedule and on triggers, not once. Effective KYC KYB compliance brings identity verification, business ownership checks, screening, RFIs and ongoing monitoring into one risk-based process. For fintechs, the goal is not simply to complete onboarding but to maintain clear, defensible records as customer risk changes over time.
