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Fraud Detection Using Machine Learning in Banking

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Tookitaki
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The financial landscape is evolving rapidly. With this evolution comes an increase in financial crimes, particularly fraud.

Financial institutions are constantly seeking ways to enhance their fraud detection and prevention mechanisms. Traditional methods, while effective to some extent, often fall short in the face of sophisticated fraudulent schemes.

Enter machine learning. This technology has emerged as a game-changer in the banking sector, particularly in fraud detection.

Machine learning algorithms can sift through vast volumes of transaction data, identifying patterns and anomalies indicative of fraudulent activities. This ability to learn from historical data and predict future frauds is revolutionising the way financial institutions approach fraud detection.

An illustration of machine learning algorithms analyzing transaction data

However, the implementation of machine learning in fraud detection is not without its challenges. Distinguishing between legitimate transactions and suspicious activity, ensuring data privacy, and maintaining regulatory compliance are just a few of the hurdles to overcome.

This article aims to provide a comprehensive overview of fraud detection using machine learning in banking. It will delve into the evolution of fraud detection, the role of machine learning, its implementation, and the challenges faced.

By the end, financial crime investigators and other professionals in the banking sector will gain valuable insights into this cutting-edge technology and its potential in enhancing their fraud detection strategies.

The Evolution of Fraud Detection in Banking

The banking sector has always been a prime target for fraudsters. Over the years, the methods used to commit fraud have evolved, becoming more complex and sophisticated.

In response, financial institutions have had to adapt their fraud detection systems. Traditional fraud detection methods relied heavily on rule-based systems and manual investigations. These systems were designed to flag transactions that met certain predefined criteria indicative of fraud.

However, as the volume of transactions increased with the advent of digital banking, these traditional systems began to show their limitations. They struggled to process the vast amounts of transaction data, leading to delays in fraud detection and prevention.

Moreover, rule-based systems were often unable to detect new types of fraud that did not fit into their predefined rules. This led to a high number of false negatives, where fraudulent transactions went undetected.

The need for a more effective solution led to the exploration of machine learning for fraud detection.

Traditional Fraud Detection vs. Machine Learning Approaches

Traditional fraud detection systems, while useful, often lacked the ability to adapt to new fraud patterns. They were rigid, relying on predefined rules that could not capture the complexity of evolving fraudulent activities.

Machine learning, on the other hand, offers a more dynamic approach. It uses algorithms that learn from historical transaction data, identifying patterns and anomalies that may indicate fraud. This ability to learn and adapt makes machine learning a powerful tool in detecting and predicting future frauds.

Moreover, machine learning can handle large volumes of data, making it ideal for the digital banking environment where millions of transactions occur daily.

Limitations of Conventional Systems in the Digital Age

In the digital age, the volume, velocity, and variety of transaction data have increased exponentially. Traditional fraud detection systems, designed for a less complex era, struggle to keep up.

These systems often generate a high number of false positives, flagging legitimate transactions as suspicious. This not only leads to unnecessary investigations but can also result in a poor customer experience.

Furthermore, conventional systems are reactive, often detecting fraud after it has occurred. In contrast, machine learning allows for proactive fraud detection, identifying potential fraud before it happens. This shift from a reactive to a proactive approach is crucial in minimising financial loss and protecting customer trust.

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Machine Learning: A Game Changer in Fraud Detection

Machine learning has emerged as a game changer in the field of fraud detection. Its ability to learn from data and adapt to new patterns makes it a powerful tool in the fight against financial fraud.

Machine learning algorithms can analyze vast amounts of transaction data in real-time. They can identify complex patterns and subtle correlations that may indicate fraudulent activity. This level of analysis is beyond the capabilities of traditional rule-based systems.

Moreover, machine learning can predict future frauds based on historical data. This predictive capability allows financial institutions to take proactive measures to prevent fraud, rather than reacting after the fact.

Machine learning also reduces the number of false positives. It can distinguish between legitimate transactions and suspicious activity with a high degree of accuracy. This not only saves resources but also improves the customer experience.

However, implementing machine learning in fraud detection is not without its challenges. It requires high-quality data, continuous model training, and a deep understanding of the underlying algorithms.

Understanding Machine Learning Algorithms in Banking

Machine learning algorithms can be broadly classified into supervised and unsupervised learning models. Supervised learning models are trained on labeled data, where the outcome of each transaction (fraudulent or legitimate) is known. These models learn to predict the outcome of new transactions based on this training.

Unsupervised learning models, on the other hand, do not require labeled data. They identify patterns and anomalies in the data, which can indicate potential fraud. These models are particularly useful in detecting new types of fraud that do not fit into known patterns.

Both supervised and unsupervised learning models have their strengths and weaknesses. The choice of model depends on the specific requirements of the financial institution and the nature of the data available.

Regardless of the type of model used, the effectiveness of machine learning in fraud detection depends largely on the quality of the data and the accuracy of the model training.

Real-Time Transaction Monitoring with Machine Learning

One of the key advantages of machine learning is its ability to process and analyse large volumes of data in real-time. This is particularly important in the context of digital banking, where transactions occur around the clock and across different channels.

Real-time transaction monitoring allows financial institutions to detect and prevent fraud as it happens. Machine learning algorithms can analyse each transaction as it occurs, flagging any suspicious activity for immediate investigation.

This real-time analysis is not limited to the transaction itself. Machine learning models can also analyze the context of the transaction, such as the customer's typical behavior, the time and location of the transaction, and other relevant factors.

This comprehensive analysis allows for more accurate fraud detection, reducing both false positives and false negatives. It also enables financial institutions to respond quickly to potential fraud, minimising financial loss and protecting customer trust.

Implementing Machine Learning Models for Fraud Detection

Implementing machine learning models for fraud detection requires a strategic approach. It's not just about choosing the right algorithms, but also about understanding the data and the business context.

The first step is to define the problem clearly. What type of fraud are you trying to detect? What are the characteristics of fraudulent transactions? What data is available for analysis? These questions will guide the choice of machine learning model and the design of the training process.

Next, the data needs to be prepared for analysis. This involves cleaning the data, handling missing values, and transforming variables as needed. The quality of the data is crucial for the performance of the machine learning model.

Once the data is ready, the machine learning model can be trained. This involves feeding the model with the training data and allowing it to learn from it. The model's performance should be evaluated and fine-tuned as necessary.

Finally, the model needs to be integrated into the existing fraud detection system. This requires careful planning and testing to ensure that the model works as expected and does not disrupt the existing processes.

Supervised vs. Unsupervised Learning in Fraud Detection

In the context of fraud detection, both supervised and unsupervised learning models have their uses. The choice between the two depends on the nature of the problem and the data available.

Supervised learning models are useful when there is a large amount of labeled data available. These models can learn from past examples of fraud and apply this knowledge to detect future frauds. However, they may not be as effective in detecting new types of fraud that do not fit into known patterns.

Unsupervised learning models, on the other hand, do not require labeled data. They can identify patterns and anomalies in the data, which can indicate potential fraud. These models are particularly useful in detecting new types of fraud that do not fit into known patterns.

Regardless of the type of model used, the effectiveness of machine learning in fraud detection depends largely on the quality of the data and the accuracy of the model training.

The Role of Data Quality and Model Training

Data quality plays a crucial role in the effectiveness of machine learning models for fraud detection. High-quality data allows the model to learn accurately and make reliable predictions.

Data quality involves several aspects, including accuracy, completeness, consistency, and timeliness. The data should accurately represent the transactions, be complete with no missing values, be consistent across different sources, and be up-to-date.

Model training is another critical factor in the success of machine learning for fraud detection. The model needs to be trained on a representative sample of the data, with a good balance between fraudulent and legitimate transactions.

The model's performance should be evaluated and fine-tuned as necessary. This involves adjusting the model's parameters, retraining the model, and validating its performance on a separate test set.

Continuous monitoring and updating of the model is also essential to ensure that it remains effective as new patterns of fraud emerge.

Challenges in Machine Learning-Based Fraud Detection

Despite the potential of machine learning in fraud detection, there are several challenges that financial institutions need to address. One of the main challenges is the complexity of financial transactions.

Financial transactions involve numerous variables and can follow complex patterns. This complexity can make it difficult for machine learning models to accurately identify fraudulent transactions.

Another challenge is the imbalance in the data. Fraudulent transactions are relatively rare compared to legitimate transactions. This imbalance can lead to models that are biased towards predicting transactions as legitimate, resulting in a high number of false negatives.

The dynamic nature of fraud is another challenge. Fraudsters continuously adapt their tactics to evade detection. This means that machine learning models need to be regularly updated to keep up with new patterns of fraud.

Finally, there are challenges related to data privacy and security. Financial transactions involve sensitive personal information. Financial institutions need to ensure that this data is handled securely and that privacy is maintained.

Distinguishing Legitimate Transactions from Fraudulent Activity

Distinguishing between legitimate transactions and fraudulent activity such as credit card fraud is a key challenge in fraud detection. This is particularly difficult because fraudulent transactions often mimic legitimate ones.

Machine learning models can help to address this challenge by identifying patterns and anomalies in the data. However, these models need to be trained on high-quality data and need to be regularly updated to keep up with changing patterns of fraud.

False positives are another concern. These occur when legitimate transactions are incorrectly flagged as fraudulent. This can lead to unnecessary investigations and can disrupt the customer experience. Strategies to minimise false positives include refining the model's parameters and incorporating feedback from fraud investigators.

Ethical and Privacy Considerations in Data Usage

The use of machine learning in fraud detection raises several ethical and privacy considerations. One of the main concerns is the use of personal transaction data.

Financial institutions need to ensure that they are complying with data protection regulations. This includes obtaining the necessary consents for data usage and ensuring that data is stored securely.

There is also a need for transparency in the use of machine learning. Customers should be informed about how their data is being used and how decisions are being made. This can help to build trust and can also provide customers with the opportunity to correct any inaccuracies in their data.

Finally, there are ethical considerations related to the potential for bias in machine learning models. Financial institutions need to ensure that their models are fair and do not discriminate against certain groups of customers. This requires careful design and testing of the models, as well as ongoing monitoring of their performance.

Financial Institutions Winning the Fight Against Fraud

Financial institutions are increasingly turning to machine learning to combat fraud. This is not just limited to large multinational banks. Smaller banks and credit unions are also adopting these technologies, often in partnership with fintech companies.

One example is the Royal Bank of Scotland, which uses machine learning to analyze customer behaviour and identify unusual patterns. This has helped the bank to detect and prevent fraud, improving customer trust and reducing financial loss.

Another example is Danske Bank, which uses machine learning to detect money laundering. The bank's machine learning model analyses transaction data and flags suspicious activity for further investigation. This has helped the bank to comply with anti-money laundering regulations and has also reduced the cost of investigations.

These examples show that machine learning is not just a tool for the future. It is already being used today, helping financial institutions to win the fight against fraud.

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The Future of Fraud Detection in Banking

The future of fraud detection in banking is promising, with machine learning playing a central role. As technology continues to evolve, so too will the methods used to detect and prevent fraud.

Machine learning models will become more sophisticated, capable of analysing larger volumes of data and identifying more complex patterns of fraudulent activity. This will enable financial institutions to detect fraud more quickly and accurately, reducing financial loss and improving customer trust.

At the same time, the integration of machine learning with other technologies, such as artificial intelligence and blockchain, will enhance fraud detection capabilities. These technologies will provide additional layers of security, making it even harder for fraudsters to succeed.

The future will also see greater collaboration between financial institutions, fintech companies, and law enforcement agencies. By sharing data and insights, these organizations can work together to combat financial fraud more effectively.

Emerging Trends and Technologies

Several emerging trends and technologies are set to shape the future of fraud detection in banking. One of these is deep learning, a subset of machine learning that uses neural networks to analyse data. Deep learning can identify complex patterns and correlations in data, making it a powerful tool for detecting fraud.

Another trend is the use of behavioural biometrics, which analyses the unique ways in which individuals interact with their devices. This can help to identify fraudulent activity, as fraudsters will interact with devices in different ways to legitimate users.

Finally, the use of consortium data and shared intelligence will become more common. By pooling data from multiple sources, financial institutions can build more accurate and robust machine learning models for fraud detection.

Preparing for the Next Wave of Financial Crimes

As technology evolves, so too do the methods used by fraudsters. Financial institutions must therefore be proactive in preparing for the next wave of financial crimes. This involves staying up-to-date with the latest trends and technologies in fraud detection, and continuously updating and refining machine learning models.

Financial crime investigators will also need to develop new skills and expertise. This includes understanding how machine learning works, and how it can be applied to detect and prevent fraud. Training and professional development will therefore be crucial.

Finally, financial institutions will need to adopt a multi-layered security approach. This involves using a range of technologies and methods to detect and prevent fraud, with machine learning being just one part of the solution. By doing so, they can ensure that they are well-prepared to combat the ever-evolving threat of financial fraud.

Conclusion: Embracing Machine Learning for a Safer Banking Environment

In conclusion, as financial institutions strive to stay ahead of increasingly sophisticated fraud tactics, adopting advanced solutions like Tookitaki's FinCense becomes imperative.

With its real-time fraud prevention capabilities, FinCense empowers banks and fintechs to screen customers and transactions with remarkable 90% accuracy, ensuring robust protection against fraudulent activities. Its comprehensive risk coverage, powered by cutting-edge AI and machine learning, addresses all potential risk scenarios, providing a holistic approach to fraud detection.

Moreover, FinCense's seamless integration with existing systems enhances operational efficiency, allowing compliance teams to concentrate on the most significant threats. By choosing Tookitaki's FinCense, financial institutions can safeguard their operations and foster a secure environment for their customers, paving the way for a future where fraud is effectively mitigated.

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21 Apr 2026
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KYC Requirements in Australia: AUSTRAC's CDD and Ongoing Monitoring Rules

You've read the AML/CTF Act. You've reviewed the AUSTRAC guidance notes. You know what KYC is. What you're less certain about is what AUSTRAC's CDD rules actually require in practice — specifically what "ongoing monitoring" means operationally, and whether your current programme would hold up under examination scrutiny.

That gap between understanding the concept and knowing what "compliant" looks like in an AUSTRAC context is precisely where most examination findings originate.

This guide covers the specific obligations under Australian law: the identification requirements, the three CDD tiers, what ongoing monitoring actually demands of your team, and what AUSTRAC examiners consistently find wrong. For a definition of KYC and its foundational elements, see our KYC guide. This article focuses on what those principles look like under Australian law.

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AUSTRAC's KYC Legal Framework

KYC obligations for Australian reporting entities flow from three primary sources. Using the right citations matters when you are writing policies, responding to AUSTRAC inquiries, or preparing for examination.

The AML/CTF Act 2006, Part 2 establishes the core customer due diligence obligations. It requires reporting entities to collect and verify customer identity before providing a designated service, and to conduct ongoing customer due diligence throughout the relationship.

The AML/CTF Rules, made under section 229 of the Act, contain the operational requirements. Part 4 sets out the customer identification procedures — the specific information to collect, the acceptable verification methods, and the document retention obligations. Part 7 covers ongoing customer due diligence, including the circumstances that trigger a review of existing customer information.

AUSTRAC's Guidance Note: Customer Identification and Verification (2023) provides AUSTRAC's interpretation of how the rules apply in practice. It is not law, but AUSTRAC examiners treat it as the standard they expect to see reflected in institution procedures. Where a compliance programme diverges from the guidance note without documented rationale, that divergence will require explanation.

Step 1: What AUSTRAC's Customer Identification Rules Require

Under Part 4 of the AML/CTF Rules, identification requirements differ depending on whether the customer is an individual or a legal entity.

Individual Customers

For individual customers, your programme must collect:

  • Full legal name
  • Date of birth
  • Residential address

Verification for individuals can be completed by one of two methods. The first is document-based verification: a current government-issued photo ID — an Australian passport, a foreign passport, or a current Australian driver's licence. The second is electronic verification, which allows an institution to verify identity against government and commercial databases without requiring a physical document. AUSTRAC's 2023 guidance note confirms that electronic verification satisfies the requirement under Part 4, subject to the provider meeting the reliability standards set out in the guidance.

Corporate and Entity Customers

For companies, the identification requirements extend beyond the entity itself. Under Part 4, you must collect:

  • Australian Business Number (ABN) or Australian Company Number (ACN)
  • Registered address
  • Principal place of business

You must also identify and verify ultimate beneficial owners (UBOs): individuals who own or control 25% or more of the entity, directly or indirectly. This threshold is set out in the AML/CTF Rules and mirrors the FATF standard. For entities with complex ownership structures — layered trusts, offshore holding companies — the tracing obligation runs to the natural person at the end of the chain, not just to the first corporate layer.

Document Retention

Part 4 requires all identification records to be retained for seven years from the date the business relationship ends or the transaction is completed. This applies to both the information collected and the verification outcome.

The Three CDD Tiers: AUSTRAC's Risk-Based Approach

AUSTRAC's AML/CTF framework is explicitly risk-based. The AML/CTF Act and Rules do not prescribe a single set of procedures for all customers — they require procedures calibrated to the risk the customer presents. In practice, this means three tiers.

Simplified CDD

Simplified CDD applies to customers who present demonstrably low money laundering and terrorism financing risk. The AML/CTF Rules identify specific categories where simplified procedures are permitted: listed companies on a recognised exchange, government bodies, and regulated financial institutions.

For these customers, full verification is still required. What changes is the scope and intensity of ongoing monitoring — institutions may apply reduced monitoring frequency and lighter risk-rating review schedules. The key requirement is that the basis for applying simplified CDD is documented in your risk assessment. AUSTRAC examiners do not accept "it's a listed company" as a sufficient standalone rationale. They expect to see it connected to a documented assessment of the specific risk factors.

Standard CDD

Standard CDD is the default for retail customers — individuals and small businesses who do not fall into a simplified or elevated risk category. It requires:

  • Full identification and verification in line with Part 4
  • A risk assessment at onboarding, documented in the customer file
  • Ongoing monitoring proportionate to the risk rating assigned

The risk assessment does not need to be elaborate for a standard-risk customer, but it needs to exist. AUSTRAC examinations consistently find that standard CDD procedures are applied as a collection exercise — gather the documents, tick the boxes — without any documented risk assessment. That is an examination finding waiting to happen.

Enhanced Due Diligence (EDD)

EDD is required for customers who present heightened money laundering or terrorism financing risk. The AML/CTF Rules and AUSTRAC's guidance identify specific categories — see the next section — but the list is not exhaustive. Your AML/CTF programme must define your own EDD triggers based on your business model and customer base.

EDD requirements include:

  • Verification of source of funds and source of wealth — not just collecting a declaration, but taking reasonable steps to corroborate it
  • Senior management approval for onboarding or continuing a relationship with an EDD customer. This requirement is not a formality; AUSTRAC expects the approving officer to have reviewed the risk assessment, not merely signed it
  • Enhanced ongoing monitoring — higher frequency of transaction review, more frequent risk-rating reviews, and documented rationale for each review outcome
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High-Risk Customer Categories AUSTRAC Specifically Flags

AUSTRAC's guidance identifies several customer types that require EDD as a matter of policy, regardless of other risk factors.

Politically Exposed Persons (PEPs) — both domestic and foreign — are a mandatory EDD category. The AML/CTF Rules adopt the FATF definition: individuals who hold or have held prominent public functions, and their immediate family members and close associates. Note that domestic PEPs are in scope. An Australian federal minister or senior judicial officer requires the same EDD treatment as a foreign head of state.

Customers from FATF grey-listed or black-listed jurisdictions — countries subject to FATF's enhanced monitoring or countermeasures — require EDD. The applicable list changes as FATF updates its public statements. Your programme needs a documented process for updating the list and re-assessing affected customers when it changes.

Cash-intensive businesses — gaming venues, car dealers, cash-based retailers — present elevated money laundering risk and require EDD regardless of their ownership structure or trading history.

Non-face-to-face onboarded customers — where there has been no in-person identity verification — require additional verification steps to compensate for the elevated identity fraud risk. Electronic verification through a robust provider can satisfy this, but the file should document the method used and why it was considered sufficient.

Trust structures and shell companies — particularly those with nominee directors, bearer shares, or complex layered ownership — require full UBO tracing and documented assessment of why the structure exists. AUSTRAC's 2023 guidance note specifically calls out trusts as an area where UBO identification has been inadequate in practice.

Ongoing Monitoring: What AUSTRAC Actually Requires

Ongoing customer due diligence under Part 7 of the AML/CTF Rules has two distinct components, and examination findings show institutions frequently confuse them.

Transaction Monitoring

Your monitoring must be calibrated to each customer's risk profile and stated purpose of account. A remittance customer who stated they send money home monthly should be assessed against that baseline. Transactions that diverge from it — large inbound transfers, payments to unrelated third parties, rapid cycling of funds — require investigation.

The obligation here is not simply to run a transaction monitoring system. It is to ensure the system's parameters reflect what you know about the customer. AUSTRAC examiners ask: when did you last update this customer's risk profile, and are your monitoring rules still calibrated to it?

For AUSTRAC's specific transaction monitoring obligations and how to build a programme that meets them, see our AUSTRAC transaction monitoring requirements guide.

Re-KYC Triggers

Part 7 requires institutions to keep customer information current. AUSTRAC's guidance identifies specific events that should trigger a review of existing customer information:

  • Material change in customer circumstances — change of beneficial ownership, change of business activity, change of registered address
  • Risk rating review — when a periodic review results in a change to the customer's risk rating
  • Dormant account reactivation — where an account that has been inactive for an extended period is reactivated
  • Periodic review for high-risk customers — EDD customers require scheduled re-KYC regardless of whether a trigger event has occurred. AUSTRAC's guidance suggests annual review as a minimum for high-risk customers, though institutions should set intervals based on their own risk assessment

The examination question AUSTRAC asks on ongoing monitoring is pointed: does your customer's risk assessment reflect who they are today, or who they were when they first onboarded? If the answer is the latter for a significant proportion of your customer book, that is a programme-level finding.

Tranche 2: What the AML/CTF Amendment Act 2024 Means for Banks

The AML/CTF Amendment Act 2024 — often called Tranche 2 — extended AML/CTF obligations to lawyers, accountants, real estate agents, and dealers in precious metals and stones. These entities became reporting entities in 2025, with full compliance required by 2026.

For banks and financial institutions already under AUSTRAC supervision, Tranche 2 creates two practical consequences.

First, PEP screening pressure increases. Newly regulated sectors are now required to identify PEPs in their customer bases. PEPs who were previously managing their financial affairs through unregulated advisers — legal firms, accounting practices — are now being identified and reported. Banks should expect an increase in STR activity related to existing customers who are now PEPs of record in other regulated sectors.

Second, documentation standards for high-risk corporate customers rise. A bank customer who is a large corporate connected to Tranche 2 entities — a property developer using a law firm and an accountant — now operates in a broader regulatory environment. Banks should review their EDD procedures for such customers to confirm that source of wealth verification accounts for the full range of the customer's business relationships, not just the bank relationship in isolation.

Common AUSTRAC Examination Findings on KYC/CDD

AUSTRAC's published enforcement actions and examination feedback reveal four findings that appear repeatedly.

Outdated customer information. Long-standing customers — those onboarded five or more years ago — frequently have no re-KYC on file. The identification records collected at onboarding are accurate for the person who walked in then. Whether they are accurate for the customer today has not been assessed. This is a programme design failure, not a one-off oversight.

Inadequate UBO identification for corporate customers. The 25% threshold is understood. The practical problem is tracing it. Institutions often stop at the first corporate layer and accept a director's declaration that no individual holds a 25%+ interest. AUSTRAC expects institutions to take reasonable steps to corroborate that declaration — corporate registry searches, publicly available ownership information, cross-referencing against disclosed group structures.

Inconsistent EDD for PEPs. PEP procedures that look robust on paper frequently break down in application. The common failure is not identifying PEPs at all — it is applying EDD to foreign PEPs but not domestic PEPs, or applying EDD at onboarding but not at periodic review, or documenting source of wealth declarations without any corroboration step.

No documented rationale for risk tier assignment. Institutions that assign customers to standard or simplified CDD tiers without documented rationale are exposed. If an examiner picks up a file and asks "why was this customer not flagged for EDD?", the answer needs to be in the file. "We assessed the risk at onboarding" is not an answer. The documented risk factors, the conclusion, and the sign-off from the responsible officer need to be there.

Building a Programme That Holds Up Under Examination

The gap between a technically compliant KYC programme and one that holds up under AUSTRAC examination is documentation and process. The legal requirements are specific. The examination question is whether your procedures implement them consistently, and whether your files show that they did.

For compliance officers building or reviewing their CDD programme, two resources cover the adjacent obligations in detail: the AUSTRAC transaction monitoring requirements guide covers the monitoring obligations that flow from CDD risk ratings, and the transaction monitoring software buyers guide covers the technology decisions that determine whether monitoring is operationally viable at scale.

If you want to assess whether your current KYC and CDD programme meets AUSTRAC's requirements in practice book a demo with Tookitaki to see how our FinCense platform helps Australian financial institutions build risk-based CDD programmes that operate at scale without sacrificing documentation quality.

KYC Requirements in Australia: AUSTRAC's CDD and Ongoing Monitoring Rules
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21 Apr 2026
5 min
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Smurfing and Structuring in AML: How to Detect and Report It

Picture the compliance analyst's morning: 400 alerts in the queue. By midday, 380 of them are false positives — wrong thresholds, misconfigured rules, noise. The other 20 need a closer look.

Now picture a structuring scheme running through those same accounts. No single transaction looks wrong. No individual deposit hits the reporting threshold. The customer's behaviour matches dozens of legitimate customers. The pattern only exists if you look across 14 accounts over 11 weeks — which nobody did, because the queue had 400 alerts in it.

That is why structuring is the hardest form of financial crime to catch. It is not poorly hidden. It is built to be invisible.

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What Structuring Is and How Smurfing Differs

For a full definition, see the Tookitaki glossary entry on smurfing. This article focuses on detection and reporting.

The short version: structuring means deliberately breaking up transactions to stay below regulatory reporting thresholds. One person depositing AUD 9,500 on Monday, AUD 9,800 on Wednesday, and AUD 9,300 on Friday — instead of a single AUD 28,600 deposit — is structuring. The intent is to avoid triggering a threshold reporting requirement, and that intent is the offence.

Smurfing is the same offence executed through multiple people. Rather than one person making repeated sub-threshold deposits, a network of individuals — "smurfs" — each make smaller deposits into the same account or a connected set of accounts. The underlying goal is identical: aggregate the cash while keeping each individual transaction below the reporting radar.

Both are placement-phase techniques within the three stages of money laundering. What makes them particularly difficult is that the individual transactions, viewed in isolation, are entirely legitimate.

Ten Red Flags That Signal Structuring

These red flags are not individually conclusive. They are indicators that warrant escalation to a Suspicious Matter Report or Suspicious Transaction Report when found in combination.

1. Repeated cash deposits just below the local reporting threshold

The clearest signal. A customer depositing AUD 9,400, AUD 9,700, and AUD 9,200 across three weeks is staying intentionally below Australia's AUD 10,000 cash transaction reporting threshold. The same pattern in Singapore sits below SGD 20,000; in the US, below USD 10,000.

2. Multiple transactions on the same day at different branches

A customer making three separate cash deposits at three different branch locations on the same day — each below threshold — cannot plausibly be explained by convenience. Branch diversity exists to avoid system-level aggregation.

3. Round-number deposits slightly below threshold

Real cash transactions tend to be irregular amounts. Deposits of exactly SGD 19,900, SGD 19,950, or SGD 19,800 — consistently round and consistently just under SGD 20,000 — suggest deliberate calculation rather than organic cash flow.

4. Shared identifiers across multiple accounts making similar deposits

When several accounts share a phone number, residential address, or email address, and each account is receiving sub-threshold cash deposits at similar intervals, the accounts are likely part of a structured network rather than unrelated individuals.

5. Accounts with no other activity except periodic sub-threshold cash deposits

A bank account that receives a cash deposit of AUD 9,800 every two to three weeks — and does nothing else — has no plausible retail banking purpose. Dormancy broken only by structured deposits is a strong indicator.

6. Rapid cycling: deposit, transfer, withdrawal in quick succession

Cash arrives, moves to a second account immediately, and is withdrawn within 24 to 48 hours. The rapidity defeats the logic of ordinary cash management and suggests the account is a pass-through in a structuring chain.

7. Multiple third parties depositing into the same account

Three different individuals — none of whom is the account holder — making cash deposits into the same account within a short window is the operational signature of smurfing. The account holder is coordinating a network of smurfs.

8. New accounts with immediate high-frequency sub-threshold activity

An account opened less than 30 days ago that immediately begins receiving several sub-threshold cash deposits per week has not developed an organic transaction history. The account was opened for the structuring activity.

9. Mule account patterns

The account receives multiple small deposits from various sources, accumulates the balance, then transfers the full amount to a single destination account. The collecting-and-forwarding pattern is a textbook mule structure.

10. Timing clusters at branch opening or closing

Transactions concentrated in the first 15 minutes after branch opening or the last 15 minutes before closing can indicate coordination — perpetrators managing detection risk by limiting teller exposure or taking advantage of shift-change gaps in oversight.

APAC Reporting Obligations: Thresholds and Timeframes

Compliance officers across the region operate under different regulatory frameworks. These are the current obligations as of 2026.

Australia — AUSTRAC

Under the Anti-Money Laundering and Counter-Terrorism Financing Act 2006:

  • Threshold Transaction Report (TTR): Required for all cash transactions of AUD 10,000 or more, or the foreign currency equivalent. Must be submitted to AUSTRAC within 10 business days.
  • Suspicious Matter Report (SMR): Where a reporting entity forms a suspicion that a transaction or customer may be connected to money laundering, financing of terrorism, or proceeds of crime, the SMR must be submitted within 3 business days of forming that suspicion (or 24 hours if terrorism financing is suspected).

Structuring is an offence under section 142 of the AML/CTF Act regardless of whether the underlying funds are from legitimate sources. Suspicion of structuring — not confirmation — triggers the SMR obligation.

Singapore — MAS

Under the Corruption, Drug Trafficking and Other Serious Crimes (Confiscation of Benefits) Act and MAS Notice SFA04-N02/CMS-N02 and related notices:

  • Cash Transaction Report (CTR): Required for cash transactions of SGD 20,000 or more, or equivalent in foreign currency.
  • Suspicious Transaction Report (STR): Must be filed with the Suspicious Transaction Reporting Office (STRO) within 1 business day of the institution's knowledge or suspicion.

Singapore's 1 business day STR deadline is among the strictest in the region.

Malaysia — BNM

Under the Anti-Money Laundering, Anti-Terrorism Financing and Proceeds of Unlawful Activities Act 2001 (AMLATFPUAA), regulated by Bank Negara Malaysia:

  • Cash Threshold Report (CTR): Required for cash transactions of MYR 25,000 or more, or equivalent in foreign currency.
  • Suspicious Transaction Report (STR): Must be submitted to the Financial Intelligence and Enforcement Department (FIED) within 3 working days of the institution forming a suspicion.

Philippines — BSP / AMLC

Under the Anti-Money Laundering Act of 2001 (Republic Act 9160) as amended, and rules issued by the Bangko Sentral ng Pilipinas (BSP) and the Anti-Money Laundering Council (AMLC):

  • Covered Transaction Report (CTR): Required for single-day cash transactions totalling PHP 500,000 or more.
  • Suspicious Transaction Report (STR): Must be filed with the AMLC within 5 business days of the transaction being deemed suspicious.

In all four jurisdictions, a failure to file — even where the transaction later proves legitimate — carries significant regulatory and criminal liability for the reporting institution.

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Why Rule-Based Transaction Monitoring Misses Structuring

Traditional transaction monitoring systems work by evaluating individual transactions against a set of rules: flag any cash deposit over a threshold; flag any transaction to a high-risk jurisdiction; flag any customer who exceeds a monthly cash limit.

Structuring is engineered to defeat exactly this type of detection. Each individual transaction passes every rule. No single deposit exceeds the threshold. No single account exhibits abnormal volume. The problem only exists in the aggregate — across multiple transactions, multiple accounts, and an extended time window.

A rule that flags AUD 10,000+ deposits will not flag three AUD 9,500 deposits. A rule that flags high transaction frequency on a single account will not flag ten accounts each making one deposit per week.

For a broader explanation of how transaction monitoring systems work and what they are designed to catch, read our What is Transaction Monitoring blog.

The result is that structuring and smurfing schemes can run for months without generating a single alert, even in banks with fully implemented transaction monitoring programmes. The rules are working exactly as configured. That is the problem.

How Machine Learning-Based Systems Detect Structuring Patterns

The detection challenge is a data aggregation problem, and machine learning systems are better suited to it than rule-based engines for three specific reasons.

Velocity analysis across accounts and time

ML systems can calculate velocity — the rate of sub-threshold deposits — across a population of accounts simultaneously, and flag when a cluster of accounts shows a correlated spike. A rule fires when one account crosses a threshold. A velocity model fires when 12 accounts in the same network collectively accumulate AUD 95,000 across six weeks in increments designed to avoid individual-account triggers.

Network graph analysis

By mapping relationships between accounts — shared addresses, shared phone numbers, overlapping transaction counterparties — graph-based models identify structuring networks that appear unconnected at the individual account level. The smurfing structure that looks like 10 ordinary retail customers becomes a visible ring when the relationship layer is added.

Temporal pattern detection

Structuring schemes operate on a schedule. Deposits cluster on specific days of the week, at specific times, in specific amounts. ML models trained on transaction sequences can identify these temporal signatures and surface accounts that match them, even when the amounts are individually unremarkable.

The practical consequence is a material reduction in both false negatives (missed schemes) and false positives (unnecessary alerts). Rules generate noise. Pattern models generate signal.

If your institution is evaluating whether its current transaction monitoring system can detect structuring at the pattern level rather than the transaction level, the Transaction Monitoring Software Buyer's Guide covers the evaluation framework — including the specific questions to ask vendors about multi-account aggregation and network analysis capabilities.

The compliance team reviewing 400 alerts each morning cannot manually reconstruct an 11-week deposit pattern across 14 accounts. That is not an attention problem. It is a systems problem. Structuring detection requires systems built for pattern-level analysis, regulatory obligations that are jurisdiction-specific and time-bound, and an alert triage process that distinguishes genuine red flags from rule-based noise.

The technology to close that gap exists. The question is whether the system currently in place is designed to find it.

Smurfing and Structuring in AML: How to Detect and Report It
Blogs
20 Apr 2026
6 min
read

Best AML and Fraud Prevention Software in Australia: The 2026 Vendor Guide

Australia’s financial system is changing fast, and a new class of AML and fraud prevention software vendors is defining what strong compliance looks like today.

Introduction

Two AUSTRAC enforcement actions in three years — Commonwealth Bank's AUD 700 million settlement in 2018 and Westpac's AUD 1.3 billion settlement in 2021 — were both linked directly to failures in transaction monitoring and fraud detection software. Not the absence of a system. The failure of one already in place.

That context matters when Australian institutions are comparing AML and fraud prevention software. The decision is not which vendor has the best demo. It is which system will still be performing correctly when AUSTRAC examines it.

This guide covers the top vendors with genuine influence in Australia's AML and fraud prevention market, the five evaluation criteria that distinguish serious systems from adequate ones, and the questions to ask before committing to any platform. The list reflects deployment footprint and regulatory track record in Australia — not marketing spend.

Talk to an Expert

Why Choosing the Right AML Vendor Matters More Than Ever

Before diving into the vendors, it is worth understanding why Australian institutions are updating AML systems at an accelerating pace.

1. The rise of real time payments

NPP has collapsed the detection window from hours to seconds. AML technology must keep up.

2. Scam driven money laundering

Victims often become unwitting mules. This has created AML blind spots.

3. Increasing AUSTRAC expectations

AUSTRAC now evaluates systems on clarity, timeliness, explainability, and operational consistency.

4. APRA’s CPS 230 requirements

Banks must demonstrate resilience, vendor governance, and continuity across critical systems.

5. Cost and fatigue from false positives

AML teams are under pressure to work faster and smarter without expanding headcount.

The vendors below are shaping how Australian institutions respond to these pressures.

Top AML and Fraud Prevention Software Vendors in Australia

1. Tookitaki

FinCense is Tookitaki's end-to-end AML and fraud prevention platform, built specifically for financial institutions in APAC. It combines transaction monitoring, fraud detection, screening, and case management within a single system — covering over 50 financial crime scenarios including account takeover, mule account detection, APP scams, trade-based money laundering, and real-time NPP-specific fraud patterns.

AUSTRAC alignment

FinCense is pre-configured with AUSTRAC-specific typologies, produces alert documentation in the format AUSTRAC examiners review, and supports direct generation of Threshold Transaction Reports (TTRs) and Suspicious Matter Reports (SMRs). Alert thresholds are calibrated to each institution's customer risk assessment — not applied from generic defaults — which directly addresses the calibration deficiencies that featured in AUSTRAC's 2018 and 2021 enforcement actions.

Real-time NPP processing

FinCense evaluates transactions pre-settlement, before NPP payments are confirmed irrevocable. This is a specific requirement for Australian institutions that batch-processing legacy systems cannot meet. Detection runs at the point of transaction initiation, not in end-of-day sweeps.

Federated learning and the AFC Ecosystem

FinCense's detection models are trained using federated learning across Tookitaki's AFC Ecosystem — a network of financial institutions that share anonymised typology intelligence without exchanging raw customer data. This means detection models reflect cross-institution fraud patterns, including coordinated mule account activity that moves between banks. Single-institution training data cannot surface these patterns.

False positive reduction

In production deployments, FinCense has reduced false positive rates by up to 50% compared to legacy rule-based systems. For a compliance team managing 400 alerts per day, that translates to approximately 200 fewer dead-end investigations — freeing analyst capacity for genuine risk signals.

Explainable alerts

Every FinCense alert includes a traceable rationale: the specific rule or model output, the customer history data points considered, and the risk factors that triggered the flag. This explainability supports both analyst decision quality and AUSTRAC audit documentation requirements.

Scalability

FinCense is deployed across institution sizes — from major banks to regional credit unions and PSA-licensed payment institutions. The platform scales to high transaction volumes without architecture changes, and implementation timelines are defined contractually rather than estimated.

Book a demo to see FinCense running against Australian fraud and AML scenarios.

For a detailed evaluation framework — including the 7 questions to ask any AML vendor before you sign — see our Transaction Monitoring Software Buyer's Guide.

2. NICE Actimize

NICE Actimize is a financial crime compliance suite from NICE Systems covering transaction monitoring, fraud detection, and sanctions screening. It is primarily deployed at large global financial institutions and has a long operational track record in the enterprise market.

3. SAS Anti-Money Laundering

SAS Anti-Money Laundering is part of SAS Institute's risk and compliance portfolio. It is an analytics-driven detection platform suited to institutions with established data science capabilities and high data maturity requirements.

4. SymphonyAI NetReveal

SymphonyAI's NetReveal is a financial crime management platform that blends established compliance protocols with advanced AI to detect fraud and money laundering. Originally acquired from BAE Systems, it now forms part of the Sensa-NetReveal Suite, which unifies traditional rules-based systems with cutting-edge predictive and generative AI.

5. Napier AI

Napier AI is a London-based financial technology company that provides a cloud-native, AI-enhanced platform for anti-money laundering (AML) and financial crime compliance. Founded in 2015, it is known for its "NextGen" approach, combining traditional rule-based systems with machine learning to reduce false positives and automate complex investigations.

6. LexisNexis Risk Solutions

LexisNexis Risk Solutions is a global data and analytics giant that provides risk intelligence across a massive range of industries, from banking and insurance to healthcare and law enforcement.

7. Quantexa

Quantexa is a London-based AI and data analytics leader specializing in Decision Intelligence (DI). Founded in 2016, the company focuses on "connecting the dots" between siloed data sources to reveal hidden relationships and risks.

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What This Vendor Landscape Tells Us About Australia’s AML Market

After reviewing the top vendors, three patterns become clear.

Pattern 1: Banks want intelligence, not just alerts

Vendors with strong behavioural analytics and explainability capabilities are gaining the most traction. Australian institutions want systems that detect real risk, not systems that produce endless noise.

Pattern 2: Case management is becoming a differentiator

Detection matters, but investigation experience matters more. Vendors offering advanced case management, automated enrichment, and clear narratives stand out.

Pattern 3: Mid market vendors are growing as the ecosystem expands

Australia’s regulated population includes more than major banks. Payment companies, remitters, foreign subsidiaries, and fintechs require fit for purpose AML systems. This has boosted adoption of modern cloud native vendors.

How to Choose the Right AML Vendor

Buying AML and fraud prevention software is not about selecting the biggest vendor or the one with the most features. It involves evaluating five critical dimensions.

1. Fit for the institution’s size and data maturity

A community bank has different needs from a global institution.

2. Localisation to Australian typologies

NPP patterns, scam victim indicators, and local naming conventions matter.

3. Explainability and auditability

Regulators expect clarity and traceability.

4. Real time performance

Instant payments require instant detection.

5. Operational efficiency

Teams must handle more alerts with the same headcount.

Conclusion

Australia’s AML and fraud landscape is entering a new era.

The vendors shaping this space are those that combine intelligence, speed, explainability, and strong operational frameworks.

The top vendors highlighted here represent the platforms that are meaningfully influencing Australian AML and fraud landscape. From enterprise platforms like NICE Actimize and SAS to fast moving AI driven systems like Tookitaki and Napier, the market is more dynamic than ever.

Choosing the right vendor is no longer a technology decision.
It is a strategic decision that affects customer trust, regulatory confidence, operational resilience, and long term financial crime capability.

The institutions that choose thoughtfully will be best positioned to navigate an increasingly complex risk environment.

Best AML and Fraud Prevention Software in Australia: The 2026 Vendor Guide