Tax credits and Child Benefit: allow someone to act for you (TC689)

Use form TC689 to authorise someone (an 'intermediary') to act on your behalf for your tax credits and Child Benefit.


Tax credits and Child Benefit: allow someone else to act for you (TC689)

TC689: Tax credits and Child Benefit Authority for and intermediary to act on your behalf

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Use form TC689 if you want an intermediary, such as Citizens Advice, to act on your behalf for your tax credits and Child Benefit.

Be aware that after an intermediary has been authorised they can make changes to your claims on your behalf, including changing your:

  • address
  • bank details

Do not use form TC689 to authorise a paid agent such as an accountant or other professional adviser to act on your behalf. You should use form 64-8 instead.

Before you start

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Claiming and dealing with tax credits for someone else
Guidance on how to deal with the Tax Credit Office for someone else.

Tax agents and advisers: authorising your agent (64-8)
Use form 64-8 to authorise HMRC to communicate with an accountant, tax agent or adviser acting on your behalf.

Published 12 June 2014
Last updated 6 April 2019 + show all updates
  1. English and Welsh version of TC689 PDF and online form updated.
  2. The details section has been updated with what changes an intermediary can make to your tax credits and Child Benefit claims.
  3. A pdf version of form TC689 has been added to the page for intermediaries to use if a printed version is needed to complete with clients, for example during a home visit.
  4. Welsh translation added.
  5. First published.