What documentation is needed for cashiers checks purchased with cash amounts over $3,000?

When purchasing cashier's checks with cash amounts over $3,000, a Monetary Instrument Log is required to ensure compliance with regulations aimed at preventing money laundering and other illicit activities. This log serves as a record of significant cash transactions and helps the institution monitor large cash dealings.

The Monetary Instrument Log is a mandatory documentation tool that banks use to track the issuance of certain monetary instruments, such as cashier's checks, when the purchase involves a cash payment exceeding that threshold. This requirement enables the bank to maintain accurate records and fulfill reporting obligations under the Bank Secrecy Act (BSA).

In contrast, the other options relate to different types of documentation that may not specifically capture the essential aspects of significant cash transactions or are not as directly connected to the regulatory requirements for cashier's checks.