Layering is the second stage of the money laundering process, occurring after the criminal proceeds have been introduced into the financial system (placement). Its purpose is to obscure the audit trail — to put as much distance as possible between the funds and their criminal origin by passing them through a complex series of transactions, transfers, and transformations that make it extremely difficult for investigators to trace the money back to the original crime. Typical layering techniques include transferring funds rapidly between multiple bank accounts across different countries, converting money into different currencies or financial instruments, purchasing and selling assets such as real estate or securities, routing funds through shell companies or trusts in secrecy jurisdictions, and making use of complex offshore corporate structures involving nominee directors and multiple layers of ownership.
From a compliance perspective, layering is the stage most associated with correspondent banking abuse, complex corporate structure risk, and the misuse of professional services such as lawyers and accountants. Transaction monitoring systems are specifically designed to detect patterns consistent with layering — such as rapid movement of funds through accounts with no clear business purpose, transactions that immediately cancel each other out (known as “round-tripping”), or an unusually complex web of counterparties. Layering often crosses multiple jurisdictions, which is why international cooperation between Financial Intelligence Units and law enforcement agencies — and consistent AML standards across countries — is so important in disrupting it effectively
