When the Tax Problem Becomes an AML Problem

When we have discussions around compliance and AML, often the focus is on fraud, corruption, drug trafficking, sanctions evasion and other obvious sources of criminal proceeds.

Tax crime tends to receive less attention, but money generated through tax evasion can still enter the financial system, move through businesses, purchase assets and become difficult to distinguish from ordinary wealth.

That creates an important question for compliance teams:

When does a tax issue become an AML issue?

The line is unsurprisingly thin

In September 2026, the U.S. Department of Justice announced that approximately $29.7 million in proceeds connected to an eight year fraud, money laundering and tax evasion scheme were being returned.

According to the DOJ, the scheme involved operating an unlicensed lottery and failing to pay taxes on income generated through the operation and other sources.

Court documents also described investment accounts opened in the names of companies controlled by the defendant, through which proceeds were held.

The proceeds were subject to a court ordered restraint and later forfeiture process.

This case involved established criminal conduct and court proceedings.

The important point, from the AML point of view, is that tax related criminal proceeds can take on the appearance of investment capital, company funds or personal wealth once they enter the financial system.

Wealth can look legitimate after enough transactions

Imagine a customer whose wealth appears to come from business activity.

The customer owns a company.

The company generates revenue.

Funds are transferred into investment accounts.

Assets are purchased.

Payments are made to other businesses.

On paper, there may be a perfectly understandable story.

But what if the customer consistently understates the level of income associated with the business?

What if the reported financial position is very different from the actual movement of money?

What if funds appear to have been accumulated through activity that was not properly disclosed?

The issue is no longer simply tax compliance.

The origin and movement of the money may become relevant to the AML assessment.

AML does not mean becoming a tax investigator

This distinction matters.

A compliance officer is not automatically responsible for determining whether a customer has correctly paid every tax obligation.

A professional should not assume that an unusual tax position is evidence of money laundering.

Businesses can have legitimate tax structures.

Companies can have different accounting treatments.

Customers can operate across jurisdictions with different obligations.

The purpose of AML is not to turn compliance teams into tax authorities.

The purpose is to recognise when information about tax related activity materially changes the understanding of the customer's funds, wealth or transactions.

Sometimes the inconsistency is the signal

A customer's stated income may not appear consistent with their lifestyle.

A business may show limited declared activity while moving substantial funds.

An individual may make large investments that appear difficult to reconcile with known income.

A company may repeatedly move profits through structures that are difficult to understand.

These facts do not prove tax evasion or money laundering.

But they can create a reason to ask whether the source of funds and source of wealth are properly understood.

That is where AML due diligence becomes useful.

The issue can cross almost every sector

A bank may encounter unexplained investment wealth.

An investment business may receive capital that does not fit the customer's known profile.

An accountant may see discrepancies between financial records and actual activity.

A professional adviser may encounter assets or transactions that appear inconsistent with the customer's declared position.

A real estate professional may be asked to handle a significant purchase funded by unexplained wealth.

A corporate service provider may see structures created to hold or move assets.

A payment business may encounter commercial activity that does not match the customer's declared business model.

The exact obligations differ by sector.

The underlying need for understanding does not.

What should happen when the numbers do not reconcile?

Do not immediately assume criminality.

Start by identifying the inconsistency.

What income is being declared?

What activity is actually taking place?

What is the source of the funds?

Who owns the assets?

What is the customer's explanation?

Is there reliable information that supports it?

Where the risk warrants it, obtain appropriate additional information and reassess the customer's profile.

If the explanation resolves the concern, document the reasoning.

If significant concerns remain and the applicable legal threshold is met, follow the organisation's escalation and reporting procedures.

For DNFBPs, this approach can be applied proportionately to the relationship and services involved.

One number can hide another story

A customer can tell you their income.

A company can tell you its revenue.

An investment account can show the balance.

A property can show its purchase price.

Those numbers are useful.

But AML analysis often depends on understanding how the numbers connect.

Where did the wealth come from?

How was it accumulated?

Does the customer's financial position make sense?

Has money moved through several entities before becoming an investment or asset?

Is there an economic explanation for the structure?

These are not questions about accusing the customer.

They are questions about understanding the financial relationship.

The lesson from tax related crime

Financial crime does not always begin with money being stolen from someone else.

It can also involve money that should have been disclosed, reported or paid to the state but was instead retained and moved through the financial system.

Once that money enters an account, an investment or an asset, the original tax offence can become much harder to see.

That is why AML professionals should not think of tax related crime as completely separate from financial crime risk.

Sometimes the missing information in an AML investigation is not where the money came from.

It is what the customer was supposed to declare about it.

Reference

U.S. Department of Justice, Department of Justice Returns Approximately $29.7M in Proceeds of Fraud, Money Laundering and Tax Evasion Scheme to the Government of Curaçao, 17 September 2026. Official DOJ reference