Chapter 1 of 2 · 5 min

What is trade-based money laundering and how does invoice manipulation work?

Understand the FATF 2006 definition of TBML and how over-invoicing and under-invoicing transfer illicit value between importers and exporters through distorted prices.

TL;DW

TBML disguises criminal proceeds inside trade transactions. Over- and under-invoicing manipulate invoice prices so one party retains a profit that compensates for illicit value transferred from the other side.

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Lesson · 4 parts

Trade-based money laundering is not a single trick but a category of methods. The FATF 2006 guidance defines it as the process of disguising criminal proceeds and moving value through trade transactions in order to legitimize an illicit origin. The key word is value: laundered funds do not need to travel as cash. They can move invisibly inside an invoice price, a shipping volume, or a service description that has been deliberately distorted.

The invoice price is the mechanism in both techniques. Under-invoicing prices goods below market value, creating a profit gap that benefits the importer when the goods are resold. Over-invoicing prices goods above market value, creating an excess payment that benefits the exporter. In both cases the financial benefit to one party compensates for illicit funds transferred through the commercial relationship. The direction of the manipulation determines who receives the benefit.

An importer buys goods worth 20,000 USD on the open market, but the exporter invoices only 10,000 USD. The importer pays 10,000 USD, takes delivery, and sells the goods at their true 20,000 USD market price. The resulting 10,000 USD surplus has no legitimate commercial explanation: it is the laundered amount. Both parties must agree to the arrangement in advance, and both carry exposure to the fraud as a result.

In over-invoicing the direction reverses. An exporter invoices 30,000 USD for goods worth 20,000 USD. The importer pays the inflated amount, and the exporter retains the 10,000 USD surplus after covering production costs. Both invoicing techniques also create tax exposure: over-invoiced imports raise the importer's declared costs, while under-invoiced exports conceal export revenue from the exporter's tax authority. Complex, multi-intermediary supply chains compound the problem by making price verification harder for every authority involved.

Study notes

Part 1 of 4 · 0:00 to 2:00

Defining trade-based money laundering

Concept The FATF definition anchors TBML in three elements: disguise, value movement, and legitimization. When you review a trade transaction for red flags, check each element separately. Does the invoice price match comparable market transactions? Is there a plausible commercial reason for the trade? Does the volume shipped correspond to the payment made? A gap in any one of these three questions warrants further inquiry.

Why it matters TBML exploits the scale and opacity of global trade. In 2021, global merchandise exports exceeded 22 trillion USD. No compliance team can inspect every transaction at the depth required to catch minor price distortions. This asymmetry between trade volume and available scrutiny is precisely what TBML operators rely on to stay below the detection threshold.

Example Consider a UK importer purchasing machine parts from a Brazilian exporter. If the invoice is priced at 15,000 USD when the fair market value is 25,000 USD, the 10,000 USD gap does not disappear. It converts into untaxed profit for the importer once the parts are resold at their true market price. That gap is the laundered amount, and it entered the financial system looking like legitimate sales revenue.

Do this

Write down the three core elements of the FATF TBML definition: disguise, value movement, and legitimization of illicit origin.
For each element, note one question you would ask when reviewing an import transaction at your own institution.

Part 2 of 4 · 2:00 to 2:45

How over- and under-invoicing move illicit value

Concept Think of the invoice price as a dial. Turn it down and value flows from exporter to importer. Turn it up and value flows from importer to exporter. The direction of the dial determines who retains the illicit profit. An investigator who knows the fair market price for a commodity can calculate the laundered amount directly from the invoice discrepancy, which is why commodity pricing databases are a core investigative tool in TBML cases.

Pitfall Market prices for commodities, especially bespoke goods or professional services, can be genuinely ambiguous. Legitimate price variation does not always indicate fraud. The red flag is a systematic pattern of mispricing across multiple transactions with the same counterparty over time, not a single invoice that diverges from a benchmark by a small margin.

Do this

Sketch a simple diagram of an importer and an exporter. Mark the direction of value flow for under-invoicing, then reverse the arrow for over-invoicing.
Identify one commodity pricing database or trade statistics source relevant to your institution's typical customer base.

Part 3 of 4 · 2:45 to 4:15

Under-invoicing: worked example and detection considerations

Example Scenario: a textile manufacturer in Country A exports 500 shirts with a fair market value of 40 USD each, totaling 20,000 USD. The invoice, however, shows 10,000 USD for the batch. The importer in Country B pays 10,000 USD, sells the shirts at market price, and earns 20,000 USD. The 10,000 USD surplus enters the importer's books as legitimate sales revenue, laundering the equivalent value transferred informally from the exporter's side.

Why it matters Under-invoicing is particularly attractive to launderers because customs scrutiny at the import stage targets contraband and underpayment of duties, not the reverse problem of goods arriving at a lower declared value than their true worth. A shipment priced below market generates fewer duties, which can appear advantageous to a customs agency focused on revenue collection rather than on detecting capital outflows.

Try it Next time you review an import transaction, check the invoice price against a commodity pricing database or published trade statistics for comparable goods. If the declared price is more than 20 to 25 percent below available benchmarks, that warrants a closer look at the relationship between buyer and seller and a request for evidence of the commercial rationale.

Do this

Calculate the laundered amount in this scenario: fair market value 50,000 USD, invoice price 35,000 USD. Who benefits and by how much?
List two types of documentation you would request to verify the fair market value of the goods in a suspicious import transaction.

Part 4 of 4 · 4:15 to 5:07

Over-invoicing, tax fraud exposure, and why complexity helps launderers

Concept Over-invoicing is sometimes called trade mispricing in the context of capital flight from emerging markets. Governments in developing economies cite it as a major mechanism by which domestic wealth is extracted to foreign jurisdictions. For a compliance professional, the key signal is an exporter charging a price significantly above published commodity benchmarks with no obvious quality, specification, or service premium that would justify the difference.

Pitfall Tax fraud is a co-occurring crime in both over- and under-invoicing scenarios. Over-invoiced imports artificially raise the importer's costs, reducing taxable profit. Under-invoiced goods conceal export revenue from the exporter's tax authority. When TBML suspicions arise, always consider whether the SAR narrative should also reference potential tax evasion, since investigators from multiple agencies may be interested in the same transaction.

Do this

List two questions you would ask a corporate customer whose import invoices consistently exceed published commodity prices for equivalent goods.
Consider which other financial crime typologies beyond money laundering could be present when an over-invoicing pattern is identified.

Key terms

TBML: Trade-Based Money Laundering: disguising criminal proceeds by manipulating the terms, price, or volume of international trade transactions to move and legitimize illicit value.
Over-invoicing: Issuing an invoice above the fair market value of goods or services, enabling the payer to transfer excess funds to the recipient.
Under-invoicing: Issuing an invoice below the fair market value of goods or services, enabling the receiving party to retain extra profit when selling at the true market price.
Fair market value: The price a willing buyer would pay a willing seller for goods or services in an arm's-length, competitive transaction with no coercion on either side.
FATF: Financial Action Task Force: the intergovernmental body that sets global AML and counter-terrorism financing standards. Its 2006 TBML guidance remains the foundational reference for identifying trade-based laundering.

Key takeaways

The FATF 2006 definition frames TBML as value movement through trade, not merely cash smuggling across borders.
Under-invoicing benefits the importer, who sells goods at true market value and retains the price gap as undocumented profit.
Over-invoicing benefits the exporter, who receives payment above production cost and retains the excess after covering costs.
Tax fraud is a near-certain co-occurring crime in both invoicing variants because the mispricing affects declared revenues and costs.

Watch out

Both the importer and exporter must agree to the mispricing. A single unwitting party would simply dispute an incorrect invoice rather than accept it.
Customs agencies focus disproportionately on imports for contraband detection and duty collection, which means under-invoicing on the import side is systematically under-scrutinized.

Check your understanding

A customer imports electronics with invoice prices consistently 30% below comparable market benchmarks across multiple shipments. Which TBML technique does this most closely suggest?

Under-invoicing: the importer pays a discounted price and sells at true market value, retaining the gap as undocumented profit. The pattern across multiple shipments is more significant than any single discrepancy.

What is trade-based money laundering and how does invoice manipulation work?

01 0:00 Concept Defining trade-based money laundering ▾

02 2:00 Concept How over- and under-invoicing move illicit value ▾

03 2:45 Step Under-invoicing: worked example and detection considerations ▾

04 4:15 Step Over-invoicing, tax fraud exposure, and why complexity helps launderers ▾