Anti-Money Laundering (AML)
Abbreviation: AML
Pronunciation: AN-tee MUH-nee LAWN-dur-ing (A-M-L)
Also known as: Anti-Money Laundering, AML
Definition
Anti-money laundering, or AML, is the set of legal and operational practices designed to detect and reduce the movement of proceeds from crime through legitimate financial services.
Overview
What it means
Anti-money laundering, or AML, is the set of legal and operational practices designed to detect and reduce the movement of proceeds from crime through legitimate financial services. Requirements depend on jurisdiction, business activity and customer relationships.
How it works
An AML program may assess customer risk, verify relevant parties, monitor activity, keep records and investigate alerts. Certain regulated entities have duties to submit confidential reports to competent authorities. Crypto-specific work can include on-chain flow analysis, wallet attribution and understanding bridges or mixing services.
Understanding the technical details
An effective AML process starts with a risk assessment grounded in the specific services, clients, jurisdictions and transaction patterns the business handles. Rules must distinguish plausible legitimate activity from signals requiring investigation. Blockchain analytics can help trace flows but is not infallible attribution of beneficial ownership. Document reviews, decisions, applicable retention and reporting obligations, with special care around confidentiality. Do not assume the same regulatory duties apply to every wallet software vendor and licensed payment institution.
Additional protocol context
Obligations vary by jurisdiction and business type but may include risk assessments, customer due diligence, beneficial-ownership checks, transaction monitoring, recordkeeping, staff training, and confidential reporting of suspicious activity to an authorized government body.
AML does not require treating every unusual transaction as criminal. Effective programs apply proportionate, risk-based controls, investigate alerts, protect sensitive reports, and document decisions. Crypto businesses must also consider blockchain analytics, wallet ownership, cross-border exposure, and changing regulatory classifications.
Common failures and limitations
Unusual behavior alone is not proof of laundering. Overly broad blocking can harm legitimate users, while insufficient controls create regulatory and financial risk. Screening models have false positives and need proportionate human review.
Related concepts
Private Key, Webhook Signature, Crypto Payment Fraud.
Further reading
Example
A payment company notices a new customer whose transfer patterns differ sharply from its stated business. It investigates with documented risk factors and, where legally required, follows its reporting procedures rather than automatically concluding the customer committed a crime.
Comparison
AML is a broad compliance and risk-control framework. Sanctions screening checks specified restrictions, and know-your-customer procedures establish identity; both may support AML but are not synonymous with it.
Key Takeaway
Unusual behavior alone is not proof of laundering.
Sources
- FATF Documentation: Virtual Assets — FATF (2026-07-30)
- FATF Documentation: Fatf Recommendations — FATF (2026-07-30)