Human Trafficking Financial Indicators

Human trafficking financial indicators are signs in customer behaviour, accounts and transactions that may show that money is connected to the recruitment, movement or exploitation of people. Banks, money transfer firms, card companies and other reporting institutions use them to recognise activity that should be examined and, where suspicion remains, reported to the authorities. They are a type of suspicious activity indicator, often called red flags.

Trafficking in persons is defined in international law by the United Nations protocol adopted in 2000, which covers the use of force, fraud or coercion to exploit people, including sexual exploitation and forced labour. It is among the most profitable crimes: the International Labour Organization estimated in 2024 that forced labour generates about 236 billion US dollars in illegal profits each year. Because victims and offenders both leave financial traces, the Financial Action Task Force and national financial intelligence units have published indicators to help the financial sector detect it.

Guidance usually follows the stages of the crime. In recruitment, money moves to pay agents, advertise false jobs and charge victims fees that create debt. In transport, there are payments for travel, visas and accommodation, often by a third party. In exploitation, income is generated from commercial sex, forced labour in sectors such as agriculture, construction, domestic work and hospitality, or forced criminal activity. Finally, proceeds are moved and disguised through money laundering, frequently using cash-heavy businesses, money mules and transfers abroad.

A distinction is drawn between trafficking and migrant smuggling. Smuggling is a payment for illegal border crossing and ends on arrival, while trafficking involves continuing exploitation and need not cross a border at all. The financial patterns overlap but are not the same.

• Control by another person. A third party is always present at the branch, speaks for the customer, holds the customer's identity documents or card, or is named as contact for several unrelated account holders.
• Wages paid and removed. Salary is received and withdrawn or transferred in full almost at once, leaving nothing for ordinary living costs.
• Shared details. Several customers, often foreign workers, share one address, phone number or employer contact, or accounts are opened in a group.
• No normal spending. The account shows no rent, food or transport payments, or shows deductions to the employer for lodging, transport or debt.

• Cash that does not fit the business. Deposits are frequent, made at several branches or cash machines in different cities, and exceed what the stated business would produce.
• Payroll anomalies. A business shows little or no payroll or tax spending for its apparent workforce, or pays many workers into accounts that a manager controls.
• Travel and accommodation. There are repeated purchases of tickets for different people, hotel and short-let bookings in many places, and payments at unusual hours.
• Advertising and logistics. Regular payments go to online classified or escort advertising sites, and to phone top-ups, taxis and takeaway food in volume.
• Rapid outward transfers. Money is sent to a funnel account or to countries known as sources of victims, sometimes through an informal value transfer system, in amounts kept below reporting thresholds, a practice known as structuring.
• Use of prepaid and virtual tools. Prepaid cards, payment apps and virtual assets are used to pay for adverts or move proceeds.

No single indicator proves trafficking; many have innocent explanations, and guidance stresses reading them in combination and in context. Institutions build them into transaction monitoring scenarios, staff training and customer due diligence for higher-risk sectors. Front-line staff are important, since behavioural signs at a branch are not visible in transaction data.

When an alert cannot be explained, it moves through suspicious activity escalation and, if suspicion is confirmed, a suspicious activity report is filed with the financial intelligence unit. Authorities ask that the report state clearly that trafficking is suspected so that it reaches specialist teams. Financial evidence is valued by prosecutors because it can corroborate or replace victim testimony and supports the confiscation of proceeds.

The FATF published a study of financial flows from human trafficking in 2018, building on earlier work from 2011. In the United States, the Financial Crimes Enforcement Network issued an advisory with red flags in 2014 and a supplement in 2020. Canada's financial intelligence unit works with banks and police under Project Protect, launched in 2016, and similar public-private partnerships operate in the United Kingdom, the Netherlands and elsewhere. The Liechtenstein Initiative, under the name Finance Against Slavery and Trafficking, has promoted both detection and access to basic banking for survivors.

Trafficking proceeds are often small, cash-based and similar in appearance to legitimate low-wage or informal activity, so detection rates are low and false alerts common. Indicators can also harm the people they aim to protect: victims whose accounts are closed as risky lose access to banking and may have damaged credit records created by their exploiters. Guidance therefore encourages institutions to treat suspected victims with care and to avoid closing accounts in ways that alert the offender or strand the victim.

• Financial Action Task Force
• Financial Crimes Enforcement Network
• United Nations Office on Drugs and Crime