How to Detect Suspicious Transactions in Remittance Businesses

Running a remittance or money transfer business comes with significant responsibility — not just to your customers, but to the broader financial system. One of the most critical obligations under Australian law is identifying and reporting suspicious transactions. Failing to do so can expose your business to serious regulatory penalties and reputational damage.

Whether you operate as an independent remittance dealer or as part of a remittance network, understanding what constitutes a suspicious transaction — and how to act on it — is essential for staying compliant with AUSTRAC’s requirements.

What Is a Suspicious Transaction?

A suspicious transaction (also referred to as a suspicious matter) is any financial activity that raises concerns about potential money laundering, tax evasion, fraud, or terrorism financing. It’s not always obvious — suspicious behaviour can range from unusual transaction patterns to customers being evasive about the purpose of a transfer.

Under Australia’s AML/CTF Act, remittance businesses are considered reporting entities. This means you are legally required to submit Suspicious Matter Reports (SMRs) to AUSTRAC whenever you form a suspicion — not just when you have proof.

Common Red Flags in Remittance Transactions

Knowing what to look for is the first step. Here are the most common indicators that a transaction may warrant closer scrutiny:

1. Structuring or ‘Smurfing’

This occurs when a customer deliberately breaks large amounts of money into smaller transactions to avoid the $10,000 threshold for Threshold Transaction Reports (TTRs). If you notice a customer making multiple transfers just below this limit in a short period of time, that is a significant red flag.

2. Unusual Transaction Patterns

Watch for:

• A customer who suddenly starts sending large amounts without a plausible explanation
• Frequent transfers to high-risk countries or jurisdictions
• A mismatch between the customer’s stated income and the volume of their transfers
• Transactions that appear inconsistent with the customer’s regular behaviour or profile

3. Customer Reluctance to Provide Information

If a customer is unwilling to provide identification, refuses to explain the purpose of a transfer, or provides conflicting details, these are strong indicators that something may be amiss. Your KYC (Know Your Customer) and CDD processes should be designed to capture this information from the outset.

4. Third-Party Payments

Be cautious when a customer is sending money on behalf of an unknown third party, or when someone else is paying for another person’s transfer. These arrangements can be used to obscure the true source or destination of funds.

5. Involvement of Politically Exposed Persons (PEPs)

Transactions involving PEPs — individuals who hold prominent public positions, such as government officials or their close associates — require enhanced due diligence. As noted in our guide on PEPs and Sanctions Screening, these individuals carry a higher risk of involvement in corruption or financial crime.

Your Obligations Under AUSTRAC

As a registered remitter in Australia, your compliance obligations extend well beyond basic registration. When you detect a suspicious transaction, you must:

• File a Suspicious Matter Report (SMR) with AUSTRAC as soon as practicable — and no later than 24 hours after forming a suspicion related to terrorism financing, or 3 business days for other matters
• Not tip off the customer that a report has been made (this is a legal obligation)
• Keep records of the transaction and any supporting documentation for at least 7 years

For a more detailed breakdown of what you need to report and when, visit our dedicated resource on AUSTRAC reporting requirements for money transfer businesses.

Building a Transaction Monitoring Framework

Reactive detection is not enough. A well-run remittance business should have a proactive transaction monitoring framework in place. Here is how to approach it:

Implement a Risk-Based Approach

Not every customer or transaction carries the same level of risk. Assign risk ratings to your customers based on factors like their geographic location, transaction volume, and the purpose of their transfers. Higher-risk customers should be subject to enhanced due diligence and more frequent monitoring.

Train Your Staff

Your frontline staff are your first line of defence. Regular training on how to identify suspicious behaviour, what questions to ask, and how to escalate concerns internally is critical. This should be part of your broader AML/CTF compliance program.

Use Technology Wisely

Many compliance platforms offer automated transaction monitoring tools that can flag unusual activity in real time. While technology cannot replace human judgment, it can significantly improve the speed and accuracy of detection.

Document Everything

Maintain clear records of your monitoring activities, the decisions you make, and the reasoning behind them. If AUSTRAC audits your business, you will need to demonstrate that your compliance program was functioning properly.

The Cost of Getting It Wrong

Failing to detect and report suspicious transactions is not just a compliance oversight — it can have serious legal and financial consequences. AUSTRAC has the authority to impose significant civil penalties, issue infringement notices, and in severe cases, pursue criminal prosecutions.

Beyond financial penalties, a failure in compliance can damage your business’s reputation and result in the suspension or cancellation of your registration. To understand more about what’s at stake, read our article on the risks of operating without a money transfer licence in Australia.

The good news is that the risks are manageable with the right systems and knowledge in place. If you are uncertain about whether your compliance processes are adequate, contact us for professional guidance tailored to your business.

Strengthening Your Overall Compliance Program

Detecting suspicious transactions is just one element of a comprehensive compliance strategy. Other key areas include:

• Understanding the difference between domestic and international money transfer compliance obligations
• Avoiding the common compliance mistakes that can delay your licence approval or trigger a review
• Knowing how to register a money transfer business in Australia and what compliance documentation you need from day one

If you are just getting started or reviewing your current setup, our guide on what to consider before applying for a money transfer licence in Victoria is a valuable starting point.