Definition
Structuring
Breaking a currency transaction into smaller amounts, or conducting it across multiple days or institutions, for the purpose of evading a reporting requirement.
By Bart Mierzejewski · Founder, FinCrime Desk · Reviewed Sep 19, 2026
Why it matters
Structuring is the single most common typology an entry-level analyst investigates, and it is the one most often misidentified. Cash-intensive legitimate businesses produce patterns that look structured and are not; the analysis turns on intent and on what the customer's expected activity should be.
In practice
Structuring is a federal crime in its own right under 31 USC 5324 — the underlying funds do not have to be illicit. Note the distinction from smurfing, which describes the use of multiple people to do the same thing. A common interview question asks the candidate to distinguish a genuine structuring pattern from a small business making sub-threshold deposits on a predictable schedule; the answer is in the customer's profile, not in the transaction amounts alone.