How To Write an Authorization Letter

Updated: 2025-10-10

Be explicit about who is authorized, what they can do, and for how long. A strong authorization letter uses specific names, dates, and actions so third parties can verify instructions quickly. Keep your tone professional and ensure your contact information is accurate in case further validation is required. Store a copy for your records and provide one to the person being authorized. If the scope changes, issue a revised letter or revoke the prior one in writing.

Steps To Follow

  • Identify parties: Full names and contact details for both sides.
  • Define scope: Describe permitted actions and any restrictions.
  • Set dates: Start and end dates for the authorization.
  • Provide proof: Reference IDs or documents if needed.
  • Sign and share: Sign the letter and give copies to relevant parties.

Practical Tips

  • Be specific: Vague permissions cause delays.
  • Keep records: Save a copy and note delivery dates.
  • Use dates: Prevent misuse by setting an end date.

Additional Tips

Lead with the purpose, identify parties by full name, and include any reference numbers required by the institution. Concrete details reduce delays and follow-up questions.

  • Lead clearly: Identify parties and purpose in the first lines.
  • Be explicit: List the action, names, and scope.
  • Verify: Double-check names, dates, and IDs.