A customer who is nervous, uneasy, or in a hurry to cash a large cashier’s check may be trying to launder money or evade reporting requirements. The teller should complete the transaction as normal, but also flag the customer’s account for further monitoring and review. The teller should look for any unusual or suspicious patterns of activity, such as frequent large cash transactions, transfers to or from high-risk jurisdictions, or transactions that do not match the customer’s profile or expected behavior. The teller should also document the transaction and the customer’s demeanor, and report any findings or concerns to the appropriate authority within the bank.

The teller should not confer with the bank’s account going forward, as this may alert the customer to the bank’s suspicion or compromise the investigation. The teller should not file a SAR on the customer, unless there are other grounds to suspect money laundering or terrorist financing, as this may be premature or unnecessary. The teller should not file a CTR on the customer by the end of the day, unless the transaction exceeds the threshold of $10,000, as this is a legal requirement for cash transactions in the US.

[ACAMS Study Guide for the CAMS Certification Examination, 6th Edition], Chapter 4: Conducting or Supporting the Investigation Process, pp. 103-104, 107-108.

Suspicious Activity Reporting - Overview, Federal Financial Institutions Examination Council, April 2018, pp. 1-2, 4-5.

Currency Transaction Reporting - Overview, Federal Financial Institutions Examination Council, April 2018, pp. 1-2, 4-5.

17 AML Analyst Interview Questions and Answers, CLIMB, July 15, 2022.