United States financial institutions are required to file Currency Transaction Reports for transactions involving more than $10,000. This requirement was created with the passage of the Bank Secrecy Act in 1970. Today, transactions of more than $10,000 are far more common. Customers may not understand why the bank is reporting information about their transactions to the government. This presentation will help banking executives, employees who interact with customers, and regulators regarding CTRs understand the history and rationale for the reporting requirements, the structure of the Bank Secrecy Act, and the important role banks play in combatting illicit finance.