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Updates: Tax agents handbook

2025

31 March 2025 published amendments

Getting started

New chapter has been created with information on how agents can register with HMRC and what they need to do to act on behalf of their clients. The Tax agents handbook has been edited and restyled throughout.

Tools, IT support and services

Information about IT services, tools and support has been edited and restyled.

Contacting HMRC

Information about the new Agent Resolution Service has been added. The service went live on 31 March 2025.

2024

1 November 2024 published amendments

About agents and HMRC

New tax agent handbook published as alternative format for tax agents and adviser detailed information collection