A permission letter is a formal document granting approval for a specific request or action. It is commonly used in professional, academic, and personal settings to seek consent from an authority, organization, or individual. The letter should clearly state the purpose, details of the request, and any relevant conditions. It ensures transparency and serves as a record of the granted permission. A well-written permission letter maintains a respectful tone and includes essential details like dates, names, and signatures. Whether for travel, events, or business purposes, a permission letter is an important document for official approvals.