Source of funds versus source of wealth: an Australian AML guide

Ask the two questions separately

For source of funds, identify the economic origin of the specific value: salary savings, a property sale, business revenue, inheritance, loan, gift, investment redemption or another event. Trace how it moved into the account, trust account, settlement, purchase or structure. The immediate sending account is part of the trail but may not reveal origin, especially where funds pass through related parties, offset accounts, digital assets or several jurisdictions.

For source of wealth, build a credible account of how the customer's broader assets were accumulated, such as employment, ownership and sale of businesses, long-term investment, inheritance or family wealth. Consider the period, occupations, enterprises, jurisdictions, major assets and liabilities. The purpose is not to perform a full forensic audit in every case; it is to establish a coherent picture at a depth proportionate to the risk and to resolve facts that do not fit the customer's profile.

Trigger enquiries through law and risk

Policies should state when each enquiry is collected, verified and refreshed. AUSTRAC guidance links source measures to specified PEP circumstances and enhanced customer due diligence, and reporting entities can require them in other higher-risk situations. Useful triggers include complex or unusually large transactions, unexplained third-party payments, opaque ownership, high-risk jurisdictions, rapid asset movement, high-value precious items, sudden wealth, nominee involvement and activity inconsistent with the stated purpose.

Do not turn risk indicators into inflexible assumptions. A gift, inheritance, cash-intensive business or overseas asset can be legitimate. Ask open, relevant questions, explain why evidence is needed, allow a reasonable response and assess the whole file. Apply the same risk method consistently and avoid discriminatory treatment based on nationality, ethnicity or profession. If legal professional privilege or confidentiality may affect material, design the request with appropriate legal input rather than abandoning the AML assessment.

Match evidence to the explanation

Evidence can include bank and investment statements, payslips, tax records, audited financial statements, sale contracts and settlement records, probate or estate documents, loan agreements, gift documentation and reliable registry information. Select documents that corroborate the claimed origin and movement. A payslip may support employment income but not a multimillion-dollar inheritance; a sale contract may establish value but should be linked to receipt of proceeds and ownership of the sold asset.

Use reliable and independent information where appropriate and verify proportionately. Check dates, names, amounts, counterparties, currencies and transfers across the evidence chain. For wealth, compare the narrative with public corporate, property or professional information where lawful and useful. Record which facts were established, which were accepted on explanation, limitations, translation or certification issues, and why the evidence is sufficient for the assessed risk. Avoid collecting large volumes of irrelevant sensitive data.

Resolve gaps without coaching a story

Inconsistencies require clarification: amounts that do not reconcile, documents in another person's name, unexplained intermediary accounts, circular transfers, unverifiable counterparties, altered records or wealth inconsistent with known activity. Ask neutral questions and retain the original response. Do not suggest an acceptable narrative or split questions among staff in a way that hides the complete picture. Consider whether ownership, customer risk, service purpose and PEP or sanctions results also need updating.

Possible outcomes include accepting the evidence, requesting targeted corroboration, enhanced monitoring, senior approval, restricting or delaying the service, declining or exiting, and considering an SMR. Inability to verify source does not automatically prove criminality, but it may prevent the business from becoming reasonably satisfied or managing the risk. Keep the SMR decision separate and protected; customer communication must not disclose a report or intention to report where tipping-off restrictions apply.

Use a proportionate file workflow

Templates should allow different evidence by scenario rather than presenting one universal checklist. Quality assurance should test whether the documents answer the claimed source, not merely whether a file was uploaded. Secure sensitive financial information, restrict access, and retain it under the applicable AML/CTF record-keeping rule and any other lawful requirement.

• State whether source of funds, source of wealth or both are required and identify the legal or policy trigger.
• Obtain the customer's explanation in their own words, including origin, amount, date, parties and movement of value.
• Request targeted documents that test the explanation instead of a generic excessive document pack.
• Corroborate economic origin and funds movement, then compare the result with customer profile, ownership and service purpose.
• Escalate material gaps using defined approval, enhanced CDD, refusal and reporting procedures.
• Record the conclusion and set refresh triggers for new transactions, changed wealth, changed risk or new information.