Structuring money is a federal crime that happens when someone deliberately breaks a cash transaction into smaller pieces so each piece stays under $10,000 and the bank doesn’t have to report it. The offense sits in 31 U.S.C. § 5324, carries up to five years in federal prison, and applies even when the cash is from a completely legal source like a business sale or an inheritance. The government can also seize the money through civil forfeiture without ever obtaining a criminal conviction.
The Reporting Rule Behind the Crime
The Bank Secrecy Act of 1970 requires financial institutions to file a Currency Transaction Report whenever a customer makes a cash deposit, withdrawal, or transfer exceeding $10,000 in a single business day. The bank files FinCEN Form 112 directly with the Financial Crimes Enforcement Network. The customer files nothing. The bank handles the paperwork automatically.
Banks also aggregate related transactions by the same person at the same institution within a business day. Deposit $6,000 in the morning and $5,000 in the afternoon at the same branch, and the bank treats it as one $11,000 transaction and files a CTR.
A CTR is not an accusation. FinCEN receives millions of them every year, mostly from restaurants depositing weekend receipts, car dealerships processing cash sales, and other ordinary business activity. The report is data collection, nothing more.
Why Splitting Cash Is a Federal Crime
The anti-structuring statute, 31 U.S.C. § 5324, makes it illegal to break up, assist in breaking up, or attempt to break up any transaction with a financial institution for the purpose of evading CTR reporting. The law targets the evasion itself, not the nature of the money. That’s the point most people miss. You can be convicted of structuring entirely legal funds.
Congress wrote it this way because unreported cash movements are the primary mechanism for laundering drug proceeds, evading taxes, and financing terrorism. The reporting system only works if people can’t opt out of it by splitting their deposits. So the crime is the act of evading, independent of what the cash represents.
What Prosecutors Have To Prove
The government must show two things: that you knew banks report large cash transactions, and that you deliberately broke up your transactions to prevent that reporting. Accidentally making a series of deposits under $10,000 isn’t a crime. The government has to show you did it on purpose.
You don’t need to have known structuring itself was illegal. An earlier version of the law required that, but Congress amended the statute to eliminate the requirement. Knowing about the reporting threshold and deliberately dodging it is enough.
In practice, the line between innocent behavior and structuring usually comes down to pattern. A landscaper who deposits cash earnings of varying amounts on different days isn’t structuring. Someone who deposits exactly $9,500 nine times over two weeks, when they had the cash on hand to make fewer, larger deposits, has created a pattern that reads as intentional evasion. Combine that pattern with any evidence the person knew about the $10,000 threshold — a teller’s warning, a prior banking conversation — and the government has what it needs.
What Structuring Looks Like
The simplest version is splitting deposits at one bank across several days. Someone holding $25,000 in cash deposits $8,000 on Monday, $8,500 on Wednesday, and $8,500 on Friday. Each transaction stays under the reporting line. This is also the easiest pattern for banks to spot.
A more layered version spreads deposits across multiple banks. Depositing $9,000 at three different institutions on the same day means no single bank files a CTR, but the combined conduct still counts as structuring. Federal investigators can reconstruct cross-institution patterns through FinCEN’s database.
“Smurfing” takes it further by recruiting other people to make deposits on the original cash holder’s behalf. Each person deposits a sub-threshold amount into the same account or buys cashier’s checks. That adds distance between the money and its owner, and it also multiplies the number of witnesses who can cooperate with investigators.
Structuring reaches beyond deposits. Buying several money orders or cashier’s checks just under $10,000, say four $3,000 money orders from the same location, qualifies as structuring when done to avoid reporting. Financial institutions must log purchases of monetary instruments between $3,000 and $10,000 and aggregate them, so this method often draws scrutiny faster than people expect.
Prison Time and Fines
Structuring is a felony. A standalone violation carries up to five years in federal prison and a fine of up to $250,000 for individuals or $500,000 for organizations. If the structuring occurs alongside another federal crime like tax evasion, drug trafficking, or fraud, or involves a pattern of illegal activity exceeding $100,000 within a 12-month period, the maximum prison term doubles to ten years and the fine doubles as well.
Actual sentences vary. Someone who structured $50,000 in legal business income might receive probation and a fine. Someone who structured $500,000 tied to unreported taxable income is looking at real prison time. The federal sentencing guidelines treat the total amount of structured funds as a key factor in the recommended sentence.
Civil Penalties and Forfeiture
The Treasury Department can also impose civil monetary penalties on anyone who structures or attempts to structure transactions. The civil fine can equal the entire amount of currency involved. Structuring $80,000 can produce an $80,000 civil penalty on top of any criminal fine. If the government also obtains forfeiture of the same funds, the civil penalty is reduced by the forfeiture amount to avoid double recovery.
Federal law separately authorizes the government to seize cash and property involved in structuring violations through civil forfeiture, a legal action against the property itself rather than the person. Because it’s a civil proceeding, the government doesn’t need a criminal conviction to take the money. The burden of proof is lower than in a criminal case, which makes forfeiture one of the government’s most aggressive tools in structuring investigations.
The government can seize the structured cash along with anything purchased with those funds. A vehicle bought with structured deposits is fair game. Because the crime is the evasion of reporting, not the source of the money, forfeiture can apply even when the underlying funds were entirely legitimate.
Congress has placed limits on this power at the IRS. Under 31 U.S.C. § 5317, the IRS may only seize property in structuring cases if the funds came from an illegal source or were structured to conceal a violation of some other criminal law beyond structuring itself. This restriction responded to widespread criticism of the IRS seizing accounts from small business owners whose only offense was making deposits under $10,000. The IRS Criminal Investigation Division reinforced the policy in October 2014 by announcing it would no longer pursue forfeiture in “legal source” structuring cases unless exceptional circumstances existed and a senior official approved the action. The Department of Justice retains broader forfeiture authority and can still pursue these cases when the funds connect to tax evasion or other offenses.
Challenging a Seizure
Anyone whose property is seized in a federal forfeiture action has a narrow window to respond. Under the Civil Asset Forfeiture Reform Act, you must file a claim no later than the deadline stated in the personal notice letter, which can be as early as 35 days after the letter is mailed. If you don’t receive personal notice, the deadline is 30 days after the final publication of the seizure notice. Miss these deadlines and the government keeps the property automatically.
If a third party’s property gets caught in a forfeiture, like a spouse’s jointly held account, federal law provides an innocent owner defense. The third party must prove by a preponderance of the evidence that they didn’t know about the structuring, or that upon learning of it they took reasonable steps to stop it. This defense doesn’t help the person who did the structuring, but it can protect family members and business partners who had no involvement.
Structuring Reaches Past Banks
The $10,000 reporting obligation also applies outside the banking system. Any trade or business that receives more than $10,000 in cash in a single transaction, or in related transactions, must file IRS Form 8300. This covers car dealerships, jewelers, real estate agents, attorneys, and similar businesses that accept large cash payments.
“Cash” for Form 8300 purposes is broader than you might expect. It includes paper currency and coins, and in certain transactions also cashier’s checks, money orders, bank drafts, and traveler’s checks with a face value of $10,000 or less. Paying for a $15,000 item with a $7,000 cashier’s check and $8,000 in currency triggers the reporting requirement, even though neither payment alone crosses the threshold.
Structuring laws apply here with equal force. Under 26 U.S.C. § 6050I, it’s illegal to break up payments to a business specifically to avoid Form 8300 reporting. A customer who buys a $25,000 piece of equipment and insists on three separate $8,500 cash payments across different days to avoid the report commits the same offense as someone splitting bank deposits. The business can also face penalties if it knowingly participates.
Handling Large Cash Transactions Legally
Depositing or spending large amounts of cash is perfectly legal. The only thing that creates criminal exposure is deliberately shaping the size or timing of transactions to prevent reporting. Walk into a bank with $45,000 from a legitimate equipment sale and deposit it all at once, and the bank files a CTR. That’s it. You don’t need to do anything else.
The worst thing you can do is ask a teller to split a transaction or suggest breaking a deposit into smaller pieces. That request is direct evidence of the intent prosecutors need for a structuring charge. Even asking whether a deposit will be reported and then changing the amount can look like awareness of the threshold combined with evasion, which is exactly what the government needs to prove.
For businesses that regularly handle large cash volumes, keeping clear records of where the money came from — sales receipts, invoices, contracts — makes CTR filings routine rather than suspicious. The filing itself carries no negative consequences. The people who end up in trouble are almost always the ones who tried to avoid a report that would have been completely unremarkable if they’d simply let it happen.