Structuring is deliberately breaking up large cash deposits into smaller amounts to avoid triggering a bank report to the federal government.
When you deposit more than $10,000 in cash at a bank in a single transaction, the bank files a Currency Transaction Report (CTR) with the Financial Crimes Enforcement Network (FinCEN), a division of the U.S. Treasury. This report is routine and legal — it does not mean you have done anything wrong. Structuring happens when someone deposits $9,500 one day, $9,000 the next day, $8,500 the day after that, and so on, specifically to keep each deposit below the $10,000 threshold and avoid the report.
The federal government treats structuring itself as a crime, separate from whatever the money is actually for. You can face criminal charges for structuring even if the cash came from a legitimate source — a business, an inheritance, a large sale. The law exists because structuring is often used to hide money from tax authorities, law enforcement, or creditors. But the act of structuring is what the government prosecutes, not the source of the money.
Key Takeaways
- Banks report all cash deposits over $10,000 to the federal government through a Currency Transaction Report, which is a standard procedure and does not indicate wrongdoing.
- Structuring — deliberately splitting deposits to stay under $10,000 — is illegal even if the money itself is legal, and can result in criminal charges and asset seizure.
- The law applies to deposits at a single bank or across multiple banks, and to deposits made over days, weeks, or months if a pattern is detected.
- If you have a legitimate reason to deposit large amounts of cash, depositing the full amount at once and reporting it honestly is the legal approach.
How the $10,000 reporting threshold works
The $10,000 figure comes from the Bank Secrecy Act, passed in 1970. Any deposit of $10,000 or more in currency triggers a CTR. The bank files this report with FinCEN; it does not go to law enforcement automatically, and it does not freeze your account or prevent you from accessing your money. The report is part of a system designed to detect money laundering and other financial crimes at scale.
The threshold applies to a single transaction. If you deposit $10,000 or more in one visit to the bank, a CTR is filed. If you deposit $5,000 one day and $6,000 the next day at the same bank, no CTR is filed for either deposit — they are separate transactions. However, if a bank suspects that deposits are being split deliberately to avoid reporting, the bank can file a Suspicious Activity Report (SAR) instead, which alerts law enforcement to the pattern itself.
Why structuring is illegal
Structuring is a federal crime under 31 U.S.C. § 5324. The law does not require that the money be illegal or that you intend to commit another crime. You can be charged with structuring based solely on the pattern of deposits, even if the cash came from your own business, a gift, or a legitimate sale.
The reasoning behind this is that structuring is almost always done to hide money from someone — the IRS, a court order, a creditor, or law enforcement. The government treats the act of hiding the transaction itself as the crime. Conviction can result in fines up to $250,000, imprisonment up to five years, or both. In addition, the government can seize the cash and any accounts involved, even if you are never convicted.
What counts as structuring
Structuring includes deposits at a single bank and deposits spread across multiple banks. It includes deposits made over days, weeks, or months if a pattern emerges. It also includes deposits made by someone else on your behalf — for example, if you give a family member $50,000 in cash and ask them to deposit it in smaller chunks into your account, both you and that person can be charged.
The key element is intent. If you deposit $9,000 one week and $9,000 the next week because those are the amounts you happened to have available, that is not structuring. If you deposit $9,000 one week and $9,000 the next week specifically to avoid a CTR, that is structuring. Banks and law enforcement look for patterns: regular deposits just under $10,000, deposits at multiple branches of the same bank, deposits at different banks in the same area, or deposits that stop once the person learns about the reporting requirement.
How banks detect structuring
Banks have software that flags deposits for review. The software looks for patterns: multiple deposits under $10,000 from the same person within a short time frame, deposits at different branches, or deposits that resume after a gap. Bank employees are also trained to watch for customers who seem nervous, ask questions about the reporting threshold, or explicitly mention wanting to avoid a report.
When a bank suspects structuring, it does not contact you or freeze your account immediately. Instead, it files a SAR with FinCEN and law enforcement. The SAR includes details about the deposits, the account holder, and the pattern that triggered suspicion. Law enforcement can then investigate. If they find evidence of structuring, they can open a criminal case.
What to do if you have a large amount of cash to deposit
If you have a legitimate reason to deposit a large amount of cash — from a business, an inheritance, a home sale, or any other legal source — deposit the full amount in a single transaction. The CTR that results is routine. You can also write a note on the deposit slip explaining the source of the money, though this is not required.
If you are concerned about how the deposit will look, you can contact your bank before depositing and explain the source. Many banks have procedures for large cash deposits and can document the explanation in your file. This creates a record that the deposit was expected and legitimate.
Do not split deposits to avoid the $10,000 threshold. Do not ask someone else to deposit money on your behalf to hide your involvement. Do not deposit money at multiple banks to spread out the transaction. All of these actions can be interpreted as structuring, regardless of whether the money itself is legal.
The difference between a CTR and a SAR
| Report Type | When It Is Filed | What Triggers It | What Happens Next |
|---|---|---|---|
| Currency Transaction Report (CTR) | Automatically | Any single cash deposit of $10,000 or more | Filed with FinCEN; does not affect your account or access to money |
| Suspicious Activity Report (SAR) | When bank suspects illegal activity | Pattern of deposits under $10,000, structuring, or other suspicious behavior | Filed with FinCEN and law enforcement; can trigger investigation |
Frequently Asked Questions
If I deposit $10,000 or more, will my account be frozen?
No. A CTR is filed automatically, but it does not freeze your account or prevent you from accessing your money. The report is informational and part of routine banking. You can withdraw the money whenever you need it.
Can I deposit $9,999 to avoid the report?
Technically yes, but if you do this repeatedly, it becomes structuring. A single deposit of $9,999 is not structuring. A pattern of deposits just under $10,000 is, and banks will file a SAR if they detect the pattern.
What if I did not know structuring was illegal?
Lack of knowledge is not a legal defense. However, if you have already structured deposits and realize it was wrong, you can consult a criminal defense attorney about your options. Some cases can be resolved without prosecution if the person cooperates and the amounts are small.
Can the government seize my money if I am suspected of structuring?
Yes. The government can seize cash and accounts through civil asset forfeiture, even before charges are filed. You would need to file a claim to recover the money, and the burden is on you to prove it came from a legitimate source.
Does this apply to checks or only cash?
The $10,000 reporting requirement applies to cash only. Checks, wire transfers, and other non-cash transactions have different reporting rules. Structuring with checks is less common but can still occur and be prosecuted.