KYC and AML explained: why a fintech startup should take them seriously from day one

KYC ("know your customer") and AML ("anti-money laundering") are probably the most repeated—and least understood—acronyms in any conversation about fintech. They are often discussed as if they were a single bureaucratic formality, when in fact they answer different questions and require different processes.

The question each one answers

KYC answers a very specific question: who is this person or company, really? Identity verification, source of funds, ownership structure if it is a company. AML answers a different question: does this pattern of activity make sense given what we know about this customer, or does it need investigating? One is done once, at the start of the relationship (and reviewed periodically); the other is continuous, for as long as the relationship lasts.

Confusing the two leads to a common mistake: assuming that verifying a user's identity at onboarding "already covers" AML. In reality, AML begins right after that: in transaction monitoring, in detecting anomalous patterns, in knowing when to escalate a case to a compliance officer.

The most common early-stage mistakes

• Treating compliance as a separate module, rather than as part of the product flow—which leads the product team to see it as an obstacle instead of part of the design.
• Outsourcing identity verification and assuming that solves AML, when continuous transaction monitoring is a separate obligation.
• Not documenting decisions: when a regulator or a bank asks why a specific transaction was approved or blocked, having no clear record is as serious as not having the control itself.
• Believing this only matters above a certain volume, when in fact regulators—and the banks serving these companies—assess the soundness of the process, not just its scale.

Why it is a trust advantage, not just a formality

There is a way of looking at KYC/AML that sees it only as a regulatory cost. There is another, more useful way, that sees it as a signal of trust to three different audiences at once: the user (who entrusts the platform with their data and their money), the bank or regulated provider serving the company (which needs to see a serious process before opening or maintaining a relationship), and the regulator (which needs to see that the company understands the framework it operates in).

A well-designed KYC/AML process does not slow growth: it is, in fact, what makes it possible to open banking relationships, close funding rounds and operate in more than one jurisdiction without every step becoming a negotiation from scratch.

A practical framework for founders

If you are just starting out: first define who is responsible for each control (in-house or a regulated external provider), document the decision criteria before you need them, and review the process every time the company enters a new jurisdiction or changes providers. The worst outcome is not having to answer hard questions from a bank; it is having no answer when they arrive.

Note: informational and educational content. It does not constitute legal, regulatory, tax or financial advice, nor an offer of services. Verify every obligation with qualified advisers and the competent authority.

Sources

• FATF-GAFI Recommendations — the international KYC/AML framework.
• European Banking Authority (EBA) — due diligence guidelines.
• SEPBLAC — Spain's anti-money laundering supervisor.