HMRC updates form 64-8 for agent authorisation

Clients should use the new form

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From 31 March 2022, taxpayers will need to use a new version of form 64-8 to give authorisation for a tax agent to deal directly with HMRC on their behalf. Existing clients will not need to re-authorise their current relationship.

How to access the new form

Taxpayers and agents can download the new agent authorisation form on GOV.UK.

Changes to the 64-8

The new version of the agent authorisation form is designed to give taxpayers a better experience and improve data protection. It allows taxpayers to state which tax regime they want their tax agent to access. The form also includes new guidance for taxpayers on how to fill in the form correctly and what data they are agreeing to share with their agent.

Phasing out of current form from Autumn 2022

HMRC will write to tax agents closer to the time with a specific date.

After this date, HMRC will only accept the new version of the 64-8 agent authorisation form and reject any authorisation requests sent using older versions of the form.