HMRC and Companies House Agent Authorisation Checklist

An internal checklist for setting up and maintaining your firm’s authority to act with HMRC and Companies House: agent services account, authorisation codes, form 64-8, Making Tax Digital, ACSP and identity verification.

Editable Word document
6
10pages
Guidance notes included
aml consultancy solutions

Accountancy practice – client documents

HMRC and Companies House Agent Authorisation Checklist

About this document

What it’s for

An internal practice checklist that takes each new client (or new service) through every HMRC and Companies House authorisation step, records how and when authority was obtained, and covers your firm’s own registrations – HMRC tax adviser registration and Companies House ACSP status.

When to use it

  • For every new client, after customer due diligence is complete
  • When an existing client adds a tax or service, or a new entity
  • When you stop acting, to remove authorisations

What’s inside

The document is laid out in the sections below. Each one comes with a plain-English guidance note explaining what it does and what to change.

  • Part A – Our firm’s own registrations (review annually)
  • Part B – Information gathered from the client
  • Part C – HMRC authorisation through the agent services account
  • Part D – HMRC online agent authorisation codes (legacy services)
  • Part E – Form 64-8 and other written authorities
  • Part F – Companies House
  • Part G – Ongoing maintenance and removal
  • Sign-off

How to complete it

  • Complete Part A once for your firm and review it each year
  • Use Parts B to F for each client
  • Write “N/A” where a step does not apply
  • File the completed checklist on the client’s permanent file

Key points to check

  • HMRC and Companies House processes and dates change often – each section notes what to verify
  • Never use a client’s own sign-in details

Our templates are professionally structured starting points for UK businesses, not legal advice. For anything complex, unusual or high-value, have your final version checked by a solicitor.

Included in the pack

Accountancy practice – client documents

£20

for every document in this category

Editable Microsoft Word files

Guidance notes in every document

Written for UK businesses

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