Financial institutions are key to sustaining the stability and safety of the global financial system. They stop money laundering, terrorist financing, and sanctions evasion. Regulators require banks to follow strict rules and maintain robust controls. These include KYC, CDD, EDD, STR, sanctions screening, and transaction monitoring (using AI and other technologies), and they are key elements of AML/CFT globally.
KYC, CDD, and EDD Requirements
Know Your Customer (KYC) is the initial step. The bank needs to know the customer to ensure they are genuine and transparent. They'll collect and check a range of documents, including government ID, proof of address and financial history. This lets the bank identify the customer and assess risk. For example, a small business owner opening a new account. The bank will ask for the owner's personal ID, documentation proving they own the business, and information on how the business makes money. If all that information is satisfactory, the bank opens the account and onboards the business owner. It's all about preventing fraud and ensuring a safe environment for the bank.
Customer Due Diligence (CDD) goes further by regularly reviewing the customer's risk profile. The bank will look at the nature of the business, the origin of the funds, and how the customer uses their account to identify potentially suspicious activity. As a result, the customer is placed into a low, medium, or high-risk category, which determines the level of monitoring applied.
Banks apply Enhanced Due Diligence (EDD) to higher-risk clients (i.e., political figures, clients from high-risk jurisdictions, or those with complex ownership structures). EDD entails identifying the ultimate beneficial owner, verifying the source of funds and undertaking ongoing negative news screening. This aligns with the FATF Recommendations, which advocate a risk-based approach rather than a one-size-fits-all approach (FATF, 2012).
Suspicious Transaction Reporting (STR)
Even with a very careful onboarding process, banks can't catch every suspicious transaction. They do this through Suspicious Transaction Reporting (STR), also known as Suspicious Activity Reporting (SAR) in some jurisdictions. A bank files an STR when a transaction appears out of the ordinary for a customer or lacks a clear financial justification.
Examples of suspicious transactions include a large cash deposit by someone with very little income, multiple transfers to high-risk countries, or breaking up a transaction into smaller amounts to avoid reporting requirements (structuring). Importantly, banks don't have to prove a crime has been committed before reporting; they only need reasonable suspicion.
Outside the US, banks pass STRs to their respective Financial Intelligence Units (FIUs), which then examine them to identify trends in money laundering or terrorist financing. In the US, STRs go to FinCEN, and in India, to the FIU-IND. The Egmont Group (a global network of FIUs) states that STRs are a fundamental part of the fight against financial crime (Egmont Group, 2021). Failure to comply with STR rules can result in fines and reputational damage (IMF, 2021).
Sanctions Screening Against Global Lists
Sanctions screening is another key compliance step. You can't do business with any individual, company or country that's on a sanctions list. The lists come from several sources, including the UN Security Council, OFAC (US Office of Foreign Assets Control), the EU, and local authorities. You'll need to screen your customers at onboarding and throughout the transaction.
Customer screening takes place before onboarding to identify sanctioned parties, and transaction screening identifies any money that is not going to or coming from sanctioned parties. False positives are one of the biggest challenges in sanctions screening; they occur when a genuine name happens to match a name on a sanctions list. For example, a real customer named "Mohammad Ali" could be a false positive if it matches a name on a sanctions list. High false-positive rates can be a real operational headache for the compliance group, increasing workload and slowing account approval. It can also hurt the customer experience, resulting in a frustrating onboarding process or, with very high false-positive rates, delays in account approval for legitimate customers. The solution is to use high-tech screening systems that support fuzzy matching and keep sanctions data up to date in real time.
Banks must abide by sanctions rules. Violations have resulted in multi-billion-dollar fines for some of the major global banks (U.S. Department of the Treasury, 2020). A breach of the rules can also damage a bank's reputation and, in effect, limit its ability to do business in certain jurisdictions.
Transaction Monitoring and AI Integration
Transaction monitoring allows the bank to monitor customer activity in real time. Older systems relied on fixed rules (e.g., limits on how much money could be moved or how often it could be moved). These systems did pick up some risks, but they also generated many false alarms and struggled to detect more sophisticated money-laundering schemes.
To close the gaps they've identified, the banks are now using machine learning and AI in their monitoring systems. The AI can pick up on patterns that are out of the ordinary for a customer. Machine learning also lets the system adapt to new data so that it can provide faster alerts on new types of suspicious activity. AI-based systems, of course, have limitations. They can miss suspicious activity if data quality is poor or if criminals find a new way to evade detection (false negatives). AI models require constant monitoring and updating and need a large volume of clean data to be effective. Banks therefore must actively monitor and improve their AI systems rather than simply relying on them.
AI-based monitoring also reduces false positives so compliance teams can focus on the real bad stuff. It can detect money mule networks by looking at links between groups of accounts (something a rule-based system would rarely do). Banks using AI solutions cite increased effectiveness and precision in their monitoring (World Bank 2020).
Emerging Patterns and Regulatory Expectations
Regulations are moving at a pace that parallels technological change and the evolution of crime. Regulators now expect banks to use a range of sophisticated tools such as RegTech, blockchain, and big data to strengthen their compliance defences. Regulators' expectations can vary dramatically from one jurisdiction to another. The EU, for instance, strongly focuses on data privacy as part of its compliance regime (GDPR being the prime example). In contrast, the US emphasises enforcement and has a complex set of AML and sanctions regimes. Some jurisdictions have their own local lists in addition to international ones, and the level of due diligence required also varies by jurisdiction. The emergence of cryptocurrencies led regulators to require VASPs to comply with AML/CFT rules, as set out in FATF Recommendation 15.
Compliance rules are getting tighter, and regulators and FIUs are increasingly working together across borders to share information. Sanctions and enforcement actions are rising, so compliance is more important than ever. Non-compliant banks undergo considerable financial and reputational penalties.
Conclusion
Compliance is now more than just following the rules. It's a fundamental element of strengthening the financial system. Doing it properly via best-in-class KYC/CDD/EDD, timely filing of STRs, sanctions screening and the use of AI for transaction monitoring is how you build security and protect yourself against both financial harm and reputational harm.
Financial crime analysts, lawyers, and compliance professionals have to balance compliance, efficiency, and customer service. If you're serious about progressing in the field, build competence in data analytics, regtech, investigation, and risk. The right certifications will go a long way toward bolstering your trustworthiness and competence in the role. As rules tighten and criminals get more inventive, banks must stay on top of compliance, ready to act and active in their approach.