Quickly learn what a Letter of Instruction is and how to write one (2024 updated). Plus, grab the free template so you can take action!With our PDF tool, you can fill out the letter of instruction in two ticks. As you can see, the bank letter example above has all of the required components (date, name of bank, account name, account number, routing number). A letter of instruction is a way to share final words of care with your loved ones and explain the choices you made in your last will and testament. A good letter of instruction should contain the following information: A complete list of all assets. Include the Florida-assigned UPID number of the bank as part of the return address on each shipping container. 6. The letter of instruction is designed to address these types of practical, day-to- day questions your representatives might face. A letter of instruction is a way to share final words of care with your loved ones and explain the choices you made in your last will and testament. This information should encompass your bank accounts, investments, and other financial assets.