Currency Reporting and the Structuring Trap

The Bank Secrecy Act (BSA) obliges financial institutions to report certain activity to Financial Crimes Enforcement Network (FinCEN):

Currency Transaction Reports

A bank must file a Currency Transaction Report (CTR) for any cash transaction, or aggregated same-day cash transactions by one customer, exceeding $10,000 ( 31 CFR §1010.311). This is automatic, routine, and requires nothing of you beyond identification. Roughly twenty million are filed a year. A CTR is not an accusation.

Suspicious Activity Reports

A bank must file a Suspicious Activity Report for transactions above $5,000 it suspects involve illegal activity or are designed to evade the BSA ( 31 CFR §1020.320), and it is prohibited by law from telling you it did. You will never know.

Wires and cross-border currency

Wire transfers do not trigger CTRs, though banks retain records above $3,000. Physically transporting more than $10,000 in cash or monetary instruments into or out of the United States requires FinCEN Form 105.

Structuring is a felony, and legitimate money is no defense. Under 31 U.S.C. §5324, breaking a cash transaction into amounts below $10,000 for the purpose of evading the reporting requirement is a federal crime carrying up to five years’ imprisonment and civil forfeiture of the funds — and the offense is complete regardless of whether the money was lawfully earned and lawfully taxed. There is no “but it was my own money” defense, because the crime is evading the report, not concealing income. The Internal Revenue Service seized millions from small businesses on structuring theories alone before policy changes in 2014–2015 curtailed the practice, and the statute remains fully in force.

The rule to internalize: never let the $10,000 threshold influence how you sequence a deposit. Depositing $25,000 of cash in one transaction is unremarkable. Depositing $9,500 three days running is a crime. If a teller helpfully suggests splitting a deposit, decline, and deposit it whole.