When someone is accused of illegally structuring bank deposits, the legal process can feel confusing and intimidating. Many people are surprised to learn that what seemed like a routine banking habit—making several smaller deposits instead of one large one—can trigger a criminal investigation. Understanding how a criminal case unfolds and what defenses may apply can help someone better protect themselves and make informed decisions.

Below is a straightforward look at how structuring cases typically develop and the kinds of defenses that may apply under federal law and California criminal law principles.

What Is Structuring?

Structuring occurs when someone intentionally breaks up cash deposits or withdrawals into smaller transactions in order to avoid bank reporting requirements. Banks in the United States must file a Currency Transaction Report (CTR)whenever a cash transaction exceeds $10,000. The rule exists under the Bank Secrecy Act, which requires financial institutions to help the government monitor large cash movements that could signal money laundering or other criminal activity.

If someone knowingly deposits $12,000 in cash but splits it into two $6,000 deposits because they want to avoid the reporting requirement, prosecutors may argue that the person structured the transactions to evade the law.

Structuring is most often prosecuted under 31 U.S.C. § 5324, which makes it illegal to structure transactions for the purpose of avoiding reporting requirements.

Even if the money itself was legally earned, the act of intentionally avoiding the reporting requirement can still be charged as a crime.

What Happens in a Structuring Criminal Case

Although every case is unique, most structuring investigations follow a fairly predictable path.

1. Bank Monitoring and Suspicious Activity Reports

Banks use software and trained personnel to identify unusual transaction patterns. Multiple deposits just under $10,000—especially when made on the same day or in quick succession—often trigger internal alerts.

If a pattern looks suspicious, the bank files a Suspicious Activity Report (SAR) with the Financial Crimes Enforcement Network. This federal agency reviews financial intelligence and may refer cases to investigators.

Importantly, customers are never told that a SAR has been filed.

2. Investigation

Once flagged, the matter may be investigated by agencies such as:

Internal Revenue Service Criminal Investigation
Federal Bureau of Investigation
Homeland Security Investigations

Investigators may examine:

Bank records
Surveillance footage from bank branches
Tax returns
Business records
Text messages or emails

Sometimes agents attempt to interview the account holder before charges are filed. DON’T SPEAK TO AGENTS WITHOUT CONSULTING AN ATTORNEY

This is one of the most critical moments in the process because statements made during an interview can later be used in court.

3. Filing of Charges

If prosecutors believe there is sufficient evidence, they may file criminal charges.

Structuring cases are frequently filed in federal court, though related financial crimes may also appear in California state court.

Possible charges include:

Structuring financial transactions
Money laundering
Tax evasion
Fraud-related offenses

The severity of charges usually depends on:

The total amount of money involved
Whether other crimes are connected to the funds
Prior criminal history

4. Arraignment

After charges are filed, the defendant appears in court for an arraignment.

At this hearing:

The charges are formally read
The defendant enters a plea (usually not guilty at first)
Bail conditions may be discussed

From this point forward, the case moves into the litigation phase.

5. Discovery and Evidence Review

Prosecutors must provide evidence to the defense, including:

Bank records
Financial analysis reports
Witness statements
Surveillance video

Financial crime cases often involve thousands of pages of records. A defense attorney typically works with forensic accountants to analyze the evidence.

6. Motions and Negotiations

Before trial, attorneys may file legal motions. These could include:

Motions to suppress illegally obtained evidence
Motions to dismiss insufficient charges
Requests to exclude certain testimony

At the same time, prosecutors and defense attorneys often discuss possible negotiated resolutions. Some cases resolve through plea agreements, while others proceed to trial.

7. Trial

If a case goes to trial, the government must prove beyond a reasonable doubt that the defendant intentionally structured transactions to evade reporting requirements.

This is a key point: intent is central to structuring cases.

The jury must believe that the defendant knew about the reporting rules and deliberately attempted to avoid them.

Common Defenses in Structuring Cases

A strong defense focuses on the specific facts of the financial transactions and the defendant’s intent.

Here are several defenses that frequently arise.

Lack of Intent

The most common defense is that the defendant did not intend to evade reporting requirements.

For example:

The person simply deposited money as it became available.
Deposits were tied to business cash flow.
The defendant did not know about the $10,000 reporting rule.

Prosecutors must prove the defendant knew about the reporting requirement and acted specifically to avoid it.

Without that knowledge, the case becomes much harder to prove.

Legitimate Business Practices

Some businesses regularly make multiple deposits because of security concerns or cash management policies.

Examples include:

Restaurants
Retail stores
Service businesses handling daily cash receipts

If the deposits were part of ordinary business operations rather than an attempt to evade reporting laws, the structuring allegation may fall apart.

No Pattern of Structuring

Prosecutors often rely on patterns of repeated sub-$10,000 deposits.

If the deposit history shows inconsistent amounts, normal banking activity, or occasional larger deposits above $10,000, the defense may argue there was no intentional pattern.

Illegal Search or Seizure

Financial investigations sometimes involve subpoenas or search warrants.

If investigators violated constitutional protections under the Fourth Amendment to the United States Constitution, the defense may ask the court to suppress evidence.

If critical financial evidence is excluded, the prosecution’s case can weaken significantly.

Funds Were Legitimate

Although structuring can be charged even when money is legal, showing that funds came from legitimate sources can help undermine the prosecution’s narrative.

For example:

Documented business revenue
Lawful cash savings
Asset sales

Evidence of legitimate income can reduce suspicion and strengthen a defense strategy.

Early Legal Representation Matters

Financial crime investigations often begin long before someone is formally charged. By the time agents contact a person, they may already have months of financial records.

That’s why early legal guidance can make a substantial difference.

A knowledgeable defense attorney can:

Communicate with investigators on your behalf
Analyze financial records for weaknesses in the government’s case
Develop defenses based on intent and transaction patterns
Protect constitutional rights throughout the investigation

Waiting too long to seek legal help can make the situation more difficult.

Speak With a Criminal Defense Attorney

Anyone who learns they are being investigated for structuring or related financial crimes should consider speaking with a defense attorney immediately.

If you have questions about structuring allegations, financial crime investigations, or your legal rights, contacting William M. Weinberg at 949.474.8008 or at bill@williamweinberg.com can help you better understand your situation and the options available to you.

An experienced defense lawyer can review the facts of your case, explain potential defenses, and help you determine the best path forward.