Every trade transaction tells a story in three parts: the goods that move, the documents that describe them, and the payment that settles the deal. In honest trade those parts line up. Trade-based money laundering (TBML) works by bending one of them, so that moving value across borders, or explaining where money came from, looks like routine business.
If you work in a bank, a payments firm, a trade finance team or a compliance function, you may see only a slice of that story, such as an invoice, a payment instruction or a transport document. That is often enough to notice when the pieces do not fit. Most trade is ordinary and legitimate, so the aim is not to treat importers and exporters with suspicion, but to recognise when a transaction deserves a second look.
How trade-based money laundering works in plain terms
TBML uses the machinery of trade, whether the trade is real, exaggerated or invented, to move value or to give money a respectable explanation. International trade involves many parties, varied prices and a lot of paperwork, so an unusual payment can be dressed up as the price of goods. It usually depends on both sides of the deal cooperating, which is why undisclosed links between buyer and seller are worth noticing.
The same methods can serve other purposes, such as evading customs duties and taxes, defrauding a financier, or hiding sanctioned parties or controlled goods. A trade concern therefore often sits where several risks overlap. You do not need to work out which risk it is before you raise it.
The main techniques, in everyday terms
Most TBML methods come down to misstating one of four things: the price, the quantity, the description of the goods, or whether the shipment exists at all.
Over- and under-invoicing. The invoice shows a price above or below the real value of the goods. If a buyer pays more than the goods are worth, the extra value ends up with the seller’s side. If the invoice is too low, the difference can be settled elsewhere, and the goods may be resold at full value.
Over- and under-shipment. The price per unit looks fair, but the quantity shipped is more or less than the paperwork says. The payment no longer matches what actually moved, and the gap is the value being transferred.
Multiple invoicing. One shipment is used to justify more than one payment or financing, for example by presenting near-identical invoices to different banks.
Phantom shipments. Invoices and other documents are produced for goods that never move, or that are worth far less than claimed. The payments look like settlement of a trade when they are really just money moving.
Misdescription of goods. Goods are described as something else, or in deliberately vague terms, to pay less duty, avoid licensing requirements or hide what is really being shipped.
Circular trade. The same goods, or papers claiming to cover them, pass repeatedly between a small group of companies, with each rotation adding another layer of documents and another payment.
Why clean paperwork does not settle the question
How much of the story you can see depends on how the trade is financed. With a letter of credit, banks check the presented documents against the credit’s terms. That tests whether the paperwork is compliant, not whether the price is fair or the goods exist, so tidy documents can still describe a false deal. Documentary collections give banks sight of documents but no promise to pay, and the level of checking may be lighter.
In open-account trade the seller ships first and invoices later, so a bank often sees little more than the payment. Supply chain and receivables finance add another angle, because a financier may fund invoices for trade that never took place. Whatever the product, the practical question is the same: who pays whom, for what, and when? If you can answer clearly, the structure is probably ordinary. If you cannot, that gap is worth recording.
Signs that justify a closer look
These are indicators, not proof. A young company may be growing quickly, a clerk can mistype a weight, and indirect shipping routes are sometimes cheaper. Higher risk is not the same as suspicion, so the question is whether the transaction makes sense as a whole.
- Goods described only vaguely, such as “equipment” or “goods”, or described differently on the invoice and the transport document.
- Quantities, weights or values that differ between the invoice, packing list and transport document without explanation.
- Unit prices that are repeatedly far from the normal range for the goods, with no commercial reason.
- Goods, volumes or values that do not fit the customer’s known business, size or storage capacity.
- Routes or logistics that add cost without purpose, or the same goods circulating among a few companies.
- Payments to or from parties that do not appear in the trade documents, or timing that does not match the shipment.
- A buyer and seller that share owners, directors or addresses that were not disclosed.
- Documents that are reused, near-identical or hard to verify, or a counterparty with little visible business presence.
One odd detail is usually a question for the file. Several across the documents, goods, route and parties, with no coherent explanation, are a reason to escalate.
Scenario
Amara works in the trade operations team of a regional bank. A customer, Kestrel Bay Trading, which was set up recently, asks for payment of a large invoice to a supplier called Lumen Ridge Supply for “electronics”. The invoice lists no models or specifications, and the weight on the transport document is far lower than the invoiced quantity would suggest. The bank’s own records show that the same person is a director of both companies. Any one of these points could have an innocent explanation, such as careless paperwork or a family-run group. Together they leave the story unclear, so Amara notes the document references and what differs, then sends it through the bank’s escalation route to the MLRO’s team. She does not mention her concern to the customer.
What matters here: Amara did not decide that this was money laundering, and she did not need to. She noticed a mismatch across documents, goods and parties, recorded facts rather than opinions, and passed the matter to the people responsible for judging it. Keeping quiet with the customer also avoids tipping off.
What to do when the pieces do not fit
Start by writing down what you saw in factual terms: which documents, which fields and what differed. Avoid labelling the activity as laundering, because that judgement belongs to those whose role it is to make it.
Then raise it through your institution’s escalation procedure to the MLRO or equivalent compliance contact. Do not investigate on your own, contact the counterparties, or question the customer about your concern. Any request for further information should follow your procedure, so that it does not signal what you have noticed.
Depending on the law that applies to you, telling a customer or anyone connected to them that a concern has been raised, or that a report has been made, may be an offence known as tipping off. The MLRO or equivalent will decide whether a report to the authorities is required. If sanctioned parties or controlled goods may be involved, say so when you escalate so that the right specialists can look at it quickly.
Key points
- TBML bends the goods, the documents or the payment so that moving value looks like ordinary trade, and most trade is entirely legitimate.
- Common methods misstate the price, quantity or description of goods, invent shipments, or reuse one shipment to justify several payments.
- Clean documents show formal compliance with terms, not that the price is fair or the goods are real.
- Indicators are reasons to look more closely, not proof, but several unexplained ones together justify escalation.
- Record the facts, escalate through the internal procedure to the MLRO or equivalent, and do not discuss the concern with the customer or counterparties.
If you are building your knowledge of financial crime, the free course AML Foundations & Core Concepts is a good place to start. The Resources page collects official sources and includes the Red Flags Frontline Checklist and the Internal Escalation Note template, both free with a learner account.