Source of Wealth (SoW) refers to the origin of a customer’s total accumulated assets, that is, how an individual or entity has generated and built their overall net worth over time.
In AML/CFT contexts, SoW analysis seeks to establish whether the customer’s wealth has been derived from legitimate, lawful activities and whether it is consistent with the customer’s profile, occupation, business interests, and geographic exposure.
SoW is distinct from Source of Funds (SoF).
While SoF focuses on the specific origin of funds involved in a particular transaction or relationship, SoW provides a holistic, longitudinal view of wealth creation.
Together, these concepts form a critical foundation for risk-based customer due diligence and enhanced due diligence (EDD).
Understanding the Source of Wealth is essential to identifying whether a customer’s financial position could plausibly have been built through lawful means.
It answers questions such as:
From an AML/CFT perspective, unexplained or implausible wealth accumulation may indicate proceeds of predicate offences such as corruption, fraud, tax evasion, organised crime, or sanctions evasion.
Conversely, well-documented and credible SoW narratives support lower residual risk assessments and reduce false positives during transaction monitoring.
SoW assessment is not a one-time exercise. As customer profiles evolve, through business expansion, inheritance, asset sales, or cross-border activity, institutions must reassess SoW to ensure ongoing alignment with observed financial behaviour.
SoW analysis is embedded across multiple AML/CFT control layers, particularly within:
Regulatory frameworks influenced by the Financial Action Task Force require institutions to understand the nature and purpose of customer relationships, including wealth origins for higher-risk customers.
Supervisors increasingly expect institutions to demonstrate not only that SoW information was collected, but that it was analysed, corroborated, and refreshed where risk warranted.
Key regulatory expectations include:
Common legitimate SoW categories include:
Each category carries different risk characteristics depending on jurisdiction, industry, and transparency.
SoW analysis considers how long it would reasonably take to accumulate the stated wealth.
Gradual accumulation over decades through salaried employment presents a different risk than rapid wealth creation through opaque offshore entities.
Wealth generated in high-risk or secrecy jurisdictions requires deeper scrutiny due to increased exposure to corruption, tax evasion, and regulatory arbitrage.
Understanding whether wealth is held in cash, real estate, securities, private companies, or digital assets helps institutions assess liquidity, traceability, and misuse risk.
Institutions typically rely on a combination of documentary and non-documentary evidence, selected proportionately based on risk:
Documentation should support the narrative consistency of the SoW explanation rather than exist as isolated artefacts.
Certain patterns increase the likelihood that wealth may be illicit or misrepresented:
Red flags do not automatically imply criminality but warrant enhanced scrutiny, corroboration, or escalation.
Criminals and facilitators may attempt to legitimise illicit wealth through several techniques:
Effective SoW analysis focuses on economic plausibility, not just document presence.
A customer claims wealth derived from founding and selling a technology company.
Plausible indicators include corporate registry filings, venture funding records, audited accounts, and sale agreements.
Risk increases if proceeds are routed through offshore entities without a commercial justification.
An individual receives substantial assets through inheritance.
Institutions assess probate documentation, family relationships, jurisdictional inheritance norms, and consistency with estate size and timelines.
A senior public official claims significant wealth from private consulting activities.
Enhanced scrutiny is required due to corruption risk, including verification of consulting clients, income levels, and conflicts with public office tenure.
Wealth is attributed to long-term market investments. Institutions evaluate portfolio history, transaction continuity, dividend income, and market realism rather than isolated account snapshots.
Inadequate SoW controls expose institutions to:
Conversely, robust SoW processes improve risk segmentation, reduce unnecessary alerts, and support defensible compliance decisions.
Despite its importance, SoW assessment presents several operational challenges:
Institutions must therefore combine policy clarity, trained judgement, and intelligence-led corroboration rather than rely solely on checklists.
Supervisors increasingly expect:
Boards and senior management are accountable for ensuring that SoW controls are proportionate, effective, and aligned with the institution’s overall risk appetite.
Source of Wealth analysis is a cornerstone of effective AML/CFT programmes because it:
As financial crime becomes more sophisticated and globalised, institutions must treat SoW not as a procedural formality but as a strategic risk-control mechanism grounded in economic logic, transparency, and continuous review.
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