Register your client’s estate

If you're a tax agent or adviser and your client has an estate with a tax liability, you can register it online.

When to register

If your client has an estate with a tax liability, you must register it with HM Revenue and Customs (HMRC) by 5 October of the tax year after they died.

What you need

To register, you must provide all of the information listed below. Providing the wrong details will delay your registration.


You need the:

  • name of the estate
  • estate address and telephone number
  • date the administration period ended

Details about the person that’s died

You need their:

  • name and address
  • date of birth and date of death
  • National Insurance number (if still available)

Personal representative

You need their:

  • name
  • email address and telephone number
  • National Insurance number and date of birth

If you can’t provide the correct National Insurance number, passport details and an address will do (follow the instructions in the online registration service).

How to register

To register an estate, you need to have an agent services account. If you’ve already got one, you need the User ID and password you created when you set up the account.

If you don’t have an account, you can create one the first time you register an estate. You’ll need:

  • your agency’s Unique Taxpayer Reference (UTR) or Corporation Tax reference
  • the postcode associated with that reference
  • to have used HMRC online services for agents

You must be the person responsible for your agent firm’s tax or administrative matters. After you’ve set up an agent services account, you can add administrators and assistants to your Government Gateway account before registering an estate.

You can save your progress, but you can’t update your registration once you submit it.

What happens next

We will send your client a UTR - you’ll need it to send a tax return using the Self Assessment for Agents online service.

Published 17 November 2017
Last updated 9 January 2018 + show all updates
  1. The 'How to register' section has been updated to include more detail on creating an agent services account.
  2. Updated content to make clear what you need to register for an agent services account.
  3. The guidance has been updated to explain more about how to register an estate, and that you need an agent services account before being able to register.
  4. First published.