Tax credits: allow someone to help you with your award (TC689)
Use form TC689 to authorise someone (an 'intermediary') to help you with your tax credits.
Documents
Details
If you want someone to help you with Child Benefit use form CH105.
Use form TC689 if you want an intermediary, such as Citizens Advice, to help you with your tax credits.
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 help you with your tax credits. You should use instead.
Email HMRC to ask for the form in Welsh.
Related forms and guidance
Claiming and dealing with tax credits for someone else
Guidance on how to deal with the Tax Credit Office for someone else.
Use form 64-8 to authorise HMRC to communicate with an accountant, tax agent or adviser acting on your behalf.
Updates to this page
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The TC689 form has been updated.
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English and Welsh version of TC689 PDF and online form updated for use from 6 April 2020.
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English and Welsh version of TC689 PDF and online form updated.
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The details section has been updated with what changes an intermediary can make to your tax credits and Child Benefit claims.
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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.
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Welsh translation added.
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First published.