Collection

Authorisation forms for tax agents and advisers

Use these forms to authorise HMRC to deal with an accountant, tax agent or adviser acting on your behalf.

• From: HM Revenue & Customs
• Published: 8 December 2014
• Last updated: 31 January 2023 — See all updates

Documents

• Authorising an agent to deal with your tax affairs
  • 3 September 2025
  • Guidance
• Give temporary authorisation to allow HMRC to deal with your tax adviser (COMP1)
  • 13 May 2024
  • Form

Published 8 December 2014

Last updated 31 January 2023 + show all updates

1. 31 January 2023

   The link to form FBI2 has been removed because you can now use form 64-8 to authorise an agent.

2. 8 December 2014

   First published.