This document provides guidance on writing collection request letters. It discusses the different stages in a collection letter series, from initial statement of accounts to reminder letters to inquiry letters and finally appeal/urgency and ultimatum letters. Each successive letter is meant to become more direct and insist on payment if prior letters do not receive a response. The document also provides tips for writing an effective first collection letter, such as including the amount past due, previous collection attempts, a summary of the account, instructions for next steps, a specific due date, and contact information.