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Money Laundering Patterns

Structuring

Designing transactions specifically to fall below regulatory reporting or due-diligence thresholds - a criminal offence in its own right under most major regimes.

Also known asThreshold evasion

Definition

Structuring is the deliberate design of one or more transactions to remain below a reporting threshold (cash transaction reports, currency import declarations, due-diligence triggers) or to avoid being aggregated. It overlaps heavily with smurfing but is the regulatory term of art - and a stand-alone offence under the US Bank Secrecy Act and most EU national laws.

Classic patterns

  • Cash deposits of $9,500 made repeatedly to avoid the $10,000 CTR trigger.
  • Wire transfers split into 4 × €12,500 to avoid an internal "€50k+" manual review.
  • Crypto withdrawals broken into many transactions under a VASP's KYC tier.
  • Multiple invoices issued just below an internal procurement-approval threshold.

Regulatory anchor

US 31 USC §5324 makes structuring a federal crime regardless of whether the underlying funds are illicit. The EU AMLR removes the "single-transaction" defence by codifying aggregation rules: linked transactions must be summed when the obligated entity has reasonable grounds to suspect they are connected.

Detection approach

The most effective control is not a threshold rule - it is a velocity rule: looking at sums-over-time per customer or per address, ignoring individual transaction sizes.