Breaking a cash deposit or withdrawal into smaller amounts so each piece stays under the $10,000 bank reporting threshold is a federal crime, and structuring cash deposits to avoid reporting is prosecuted even when every dollar is legitimate. The law targets the intent to keep the bank from filing its report, not where the money came from. A conviction carries up to five years in prison, and the government can seize the funds through civil forfeiture long before any criminal charge is filed.1Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited
What the $10,000 Reporting Trigger Covers
Every bank, credit union, and similar institution must file a Currency Transaction Report whenever a customer conducts a cash transaction exceeding $10,000 in a single business day.2eCFR. 31 CFR 1010.311 – Filing Obligations for Reports of Transactions in Currency “Cash” means physical paper money and coins. Wire transfers, checks, and card payments don’t count toward the threshold at any amount.
Banks don’t look at transactions one at a time. Federal regulations treat multiple cash transactions as a single transaction if they are made by or on behalf of the same person and together exceed $10,000 in one business day.3eCFR. 31 CFR 1010.313 – Aggregation A $6,000 deposit at one branch in the morning and a $5,000 deposit at another that afternoon triggers a CTR exactly the same as a single $11,000 deposit. Compliance software links transactions tied to the same taxpayer identification number across every branch. Weekend and overnight deposits count against the next business day.
What Counts as Structuring
Structuring is the practice of breaking a large cash transaction into smaller pieces to stay below the $10,000 reporting line. The classic pattern is depositing $9,000 today and $9,000 tomorrow instead of depositing $18,000 at once. But the statute reaches further than that. Structuring can also mean:
- Making deposits at multiple banks on the same or consecutive days to keep each one under the threshold.
- Asking a spouse, employee, or friend to make deposits on your behalf so no single person’s activity triggers a report.
- Mixing cash deposits with cash purchases of monetary instruments to keep every individual transaction below the line.
That last point matters because a separate rule records cash purchases of cashier’s checks, money orders, and traveler’s checks at $3,000 or more, with same-day purchases aggregated.4FFIEC BSA/AML InfoBase. Purchase and Sale of Certain Monetary Instruments Recordkeeping Buying a $2,000 money order and a $1,500 cashier’s check in a single visit triggers that recordkeeping requirement. Spreading cash across deposits and instrument purchases to beat the $10,000 CTR line is still structuring.
Prosecutors build cases on patterns. A string of deposits just under $10,000, deposits on consecutive business days, or deposits spread across branches and institutions in a way that doesn’t match normal banking behavior are the signatures investigators look for.
The Source of the Money Doesn’t Matter
This is the point that catches honest people. Every dollar can come from a legitimate paycheck, a sold car, a cash-heavy small business, or an inheritance, and structuring the deposits is still a federal crime. The statute criminalizes the act of structuring itself, aimed at preventing the bank from filing its report. The lawfulness of the underlying funds is not a defense.
Common fact patterns that have led to charges include a small-business owner who deposits daily receipts in amounts kept deliberately below $10,000, a person depositing a cash gift or inheritance in installments to “avoid paperwork,” and someone who was told, correctly or incorrectly, that deposits over $10,000 would attract tax scrutiny and tried to space them out as a result.
What the Government Has to Prove
In 1994, the Supreme Court held in Ratzlaf v. United States that the government had to prove the defendant knew structuring itself was illegal, not merely that the defendant intended to avoid the reporting requirement.5Justia US Supreme Court. Ratzlaf v United States, 510 US 135 (1994) Congress responded by amending the statute. Under the current version of 31 U.S.C. ยง 5324, the government only needs to show that the person structured the transaction with the purpose of evading the reporting requirement. There is no requirement to prove the person knew structuring was a separate crime.1Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited
In practice, that means intent is proved circumstantially. Deposit amounts clustered just below $10,000, timing that avoids aggregation, use of multiple branches or multiple people, and statements the depositor made to bank staff all feed the inference that the pattern was designed to keep the bank quiet.
Criminal Penalties
A basic structuring conviction carries up to five years in prison.1Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited Fines for individuals can reach $250,000 per count under the general federal sentencing statute, and organizations face fines up to $500,000.6Office of the Law Revision Counsel. 18 USC 3571 – Sentence of Fine When the structuring occurs alongside another federal crime, or is part of a pattern of illegal activity involving more than $100,000 in a 12-month period, the maximum prison sentence doubles to ten years and the fine ceiling doubles as well.
Civil Forfeiture of the Money
Criminal charges are only part of the exposure. The government can seize the cash itself through civil forfeiture, and this is where structuring cases hit hardest in practice. Someone who deposits legitimate business income in $8,000 chunks may lose the entire account balance long before any indictment is filed. The IRS has investigatory jurisdiction over structuring-related forfeitures.
The process splits into two tracks depending on the property. For personal property worth $500,000 or less, or for monetary instruments of any value, the government can pursue administrative forfeiture. Notice is published on the federal forfeiture website, and the owner has 35 days from the date the notice letter was mailed to file a claim contesting the seizure. If no claim is filed on time, the property is declared forfeited. For real property, or personal property worth more than $500,000, the government must file a judicial forfeiture action and prove by a preponderance of the evidence that the property is subject to forfeiture. The complaint must be filed within 90 days of a claim, or the property must be returned.
Getting seized money back through the claim process is possible but slow, expensive, and far from guaranteed. Deadlines in a forfeiture notice are hard; missing the 35-day window on an administrative seizure generally ends the fight before it starts.
How Banks Spot It, and Why You Won’t Be Warned
Banks are required to file a Suspicious Activity Report when they identify a transaction of at least $5,000 that appears designed to evade BSA reporting, appears tied to illegal activity, or has no apparent lawful purpose given what the bank knows about the customer.7eCFR. 31 CFR 1020.320 – Reports by Banks of Suspicious Transactions Unlike CTRs, SARs are not limited to cash and are not limited to any single transaction type. A pattern of sub-$10,000 cash deposits is one of the textbook triggers.
You will not be told. Federal law flatly prohibits anyone at a financial institution from disclosing that a SAR has been filed, or revealing any detail that would tip off the subject.8Office of the Law Revision Counsel. 31 USC 5318 – Compliance, Exemptions, and Summons Authority The teller who takes your deposit, the branch manager, and the compliance staff all operate under the same gag rule. Government employees who learn of a SAR are bound by the same prohibition except where disclosure is needed for official duties. In exchange for reporting, the law gives banks a safe harbor that blocks civil suits by the reported customer. If your deposits raise flags, the account will keep operating normally while a report moves through the system.
If You Have Large Cash to Deposit
The reporting itself is not the problem; the attempt to avoid it is. A single deposit over $10,000 generates a CTR, which is a routine filing the bank handles with your name, address, and taxpayer identification number. No wrongdoing is implied by a CTR, and millions are filed every year on ordinary business and personal transactions. The crime arises only when the depositor acts to prevent that filing. If you have a lump sum to deposit, depositing it in one transaction and letting the bank file its report keeps you clear of the structuring statute entirely.