What Is Structuring, and Does It Count as a BSA Violation?

Structuring is the deliberate use of cash transactions arranged to evade a financial institution’s required reporting. A person might, for example, split a large cash deposit among several days or accounts to avoid a bank filing a Currency Transaction Report. That kind of conduct can violate federal law—but a transaction below a reporting threshold is not automatically illegal.

This distinction matters to customers, financial institution employees, and potential whistleblowers. The Bank Secrecy Act (BSA) creates reporting and recordkeeping duties for financial institutions and prohibits certain efforts to evade those duties. It also provides a whistleblower program for people with qualifying information about violations. Here’s how the rules fit together.

What Is Structuring?

Structuring means arranging one or more transactions with the purpose of evading a legal reporting requirement. In everyday banking, the term most often refers to breaking up cash transactions to avoid a Currency Transaction Report (CTR).

Generally, a financial institution must file a CTR for cash transactions involving more than $10,000 in one business day by or on behalf of the same person. The bank may aggregate multiple transactions for that day. The customer does not file the CTR; the financial institution does.

For example, a person who has $18,000 in cash to deposit might make two deposits of $9,000 on separate days specifically to avoid CTR reporting. If done with the required intent, that may constitute structuring. By contrast, making a $9,000 cash deposit for an ordinary reason does not, by itself, prove a violation. The amount, timing, pattern, explanations, and other evidence can all matter.

Is a deposit under $10,000 always safe from reporting?

No. The $10,000 threshold applies to CTR reporting, not to every form of financial monitoring. A bank may have to file a Suspicious Activity Report (SAR) when it identifies suspicious conduct, including a pattern that appears designed to evade reporting. A SAR is a confidential report made by a financial institution to the government; it is not a finding of guilt and is generally not disclosed to the person involved.

Financial institutions may also ask questions, keep records, or take other steps under applicable rules and internal procedures. Avoiding the CTR threshold does not make transactions invisible or automatically lawful.

Does Structuring Count as a BSA Violation?

It can. Federal law, at 31 U.S.C. § 5324, prohibits structuring transactions to evade certain requirements under the BSA or related laws. The law can apply to a person who structures transactions themselves, directs another person to do so, or assists in doing so. Depending on the facts and the applicable provision, structuring can lead to civil or criminal consequences.

The important element is the purpose to evade a reporting or recordkeeping requirement—not simply the fact that several transactions were each below $10,000. A lawful business may make repeated cash deposits for ordinary operational reasons. Investigators may look at evidence such as communications about avoiding reporting, repeated deposits calibrated just below a threshold, or instructions to use different branches or other people. No single fact necessarily decides the issue.

Structuring is also only one part of the broader BSA framework. The BSA requires covered financial institutions to maintain anti-money-laundering controls, keep specified records, and report certain transactions. A failure to meet those duties may create a separate compliance issue, even when no customer has been charged with structuring.

How SARs Fit into the Picture

Financial institutions must file SARs for certain suspicious transactions, including transactions that may involve a legal violation or appear designed to evade BSA requirements. A bank’s decision to file a SAR is not proof that a customer committed a crime. SARs are investigative leads, and law enforcement or regulators assess them alongside other evidence.

Potential violations can arise when an institution fails to file a required SAR, files one late, or maintains inadequate processes for identifying and escalating suspicious activity. The precise obligation depends on the institution, the transaction, and the applicable regulations. SAR confidentiality rules are strict: employees and other people with access generally must not disclose that a SAR was filed or reveal its contents to the person involved.

That confidentiality rule is one reason an employee with concerns should use an appropriate reporting channel and avoid sharing SARs or protected information outside authorized processes. A whistleblower can describe suspected conduct to the relevant authority without publicly disclosing a SAR itself.

What Is the AML/BSA Whistleblower Program?

The anti-money-laundering (AML) and BSA whistleblower program offers a potential monetary award to people who voluntarily provide original information that leads to a successful enforcement action covered by the law. It is administered through the U.S. Department of the Treasury, with information and program materials available through the Financial Crimes Enforcement Network (FinCEN) at fincen.gov.

The program’s modern statutory framework came from the Anti-Money Laundering Act of 2020 and was significantly revised by the Anti-Money Laundering Whistleblower Improvement Act, included in the National Defense Authorization Act for Fiscal Year 2023. That law was enacted on December 23, 2022. The changes strengthened the award framework and broadened incentives for reporting qualifying violations.

In general, an eligible whistleblower may receive an award of 10% to 30% of monetary sanctions collected in a qualifying action when the statutory conditions are met. The action generally must result in monetary sanctions exceeding $1 million. An award is not automatic: it depends on the information’s contribution, the outcome of the openclassactions.com action, and other statutory requirements. No one should assume a report will lead to an investigation, an enforcement action, or an award.

Who May Be Eligible?

The program is not limited to people with a particular job title. A current or former employee, contractor, consultant, or other person with relevant knowledge may have information worth reporting. Eligibility depends on the law and the specific facts—not merely on whether someone works in compliance or has access to company records.

“Original information” generally means information based on independent knowledge or independent analysis that is not already known to the Treasury in the relevant way. The information must be provided voluntarily and must contribute to a successful covered action. It can include first-hand facts, documents lawfully obtained, or an analysis that helps authorities understand a suspected violation.

There are limits and exclusions. For example, information obtained through certain official duties, government investigations, or legal proceedings may not qualify, and a person’s own participation in wrongdoing can affect eligibility or an award. The details can be technical. Potential whistleblowers should review current FinCEN instructions and consider getting independent legal advice before submitting sensitive information.

What Violations May Qualify?

The program concerns qualifying violations within its statutory scope, not every compliance failure or financial dispute. Depending on the facts and applicable law, relevant conduct may include:

• Structuring transactions: knowingly arranging cash transactions to evade required reporting or recordkeeping.
• SAR-related failures: failures by a covered institution to meet applicable suspicious-activity reporting obligations, or conduct that obstructs or undermines those obligations.
• Customer due diligence: failures involving required customer due diligence (CDD), including applicable requirements to identify and verify beneficial owners of certain legal entity customers.
• Records and reporting: failures to keep required records, maintain required controls, or comply with other BSA reporting duties.
• Sanctions-related violations: certain violations of U.S. sanctions laws may fall within the whistleblower framework’s expanded scope. Sanctions cases can involve authorities and legal requirements beyond the BSA, so the precise statute matters.

Not every mistake qualifies as a whistleblower case. A late filing, weak control, or suspicious transaction may raise compliance concerns without necessarily satisfying the requirements for an award. Authorities determine whether a violation occurred and whether the information supports a covered enforcement action.

Issue What it generally means Why it matters CTR threshold Generally, cash transactions over $10,000 in a business day by or for the same person are reportable by the financial institution. Splitting transactions to evade the requirement may be structuring. SAR A confidential report a financial institution files about qualifying suspicious activity. A SAR is not proof of guilt, but failures to meet reporting duties may raise BSA issues. Whistleblower award A potential award for voluntary, original information that contributes to a successful covered action. Eligibility and payment depend on statutory requirements and the action’s outcome.

What to Do Next if You Have Information

If you suspect structuring or another BSA-related violation, take care to preserve your own safety and avoid compromising an investigation. Do not make assumptions based only on transaction size or rumor.

1. Write down what you personally know. Note dates, people involved, transactions, instructions, and how you learned the information. Separate first-hand facts from assumptions.
2. Preserve information lawfully. Do not access systems without authorization, take restricted records, or disclose SARs or other protected information. Keep a record of relevant facts without violating workplace policies or the law.
3. Review official guidance. Check the whistleblower information and submission instructions on FinCEN’s website. Requirements can change, so use current materials.
4. Consider independent legal advice. An attorney familiar with whistleblower matters can discuss confidentiality, eligibility, potential exclusions, and how to submit information. Avoid relying on anyone who promises an award or a particular result.
5. Do not disclose a SAR. If your concern involves a SAR, report the underlying conduct through an authorized channel rather than circulating the report or identifying its filing to the subject.

The Bottom Line

Structuring transactions can be a BSA violation when someone deliberately arranges transactions to evade a reporting or recordkeeping requirement. A cash transaction below the currency reporting threshold, on its own, is not enough to establish structuring. Intent and surrounding facts matter.

The BSA whistleblower program, strengthened by the law enacted on December 23, 2022, may provide an award for qualifying original information that contributes to a successful enforcement action. SAR duties, CDD, records, structuring, and certain sanctions violations may be relevant, but eligibility is fact-specific. For current program details, start with FinCEN; for advice about your own exposure or reporting options, consult an independent attorney.