Community Amateur Sports Club registration form CASC (A1)

Use online form or postal form CASC (A1) to register your club as a Community Amateur Sports Club (CASC).


Apply online (sign in using Government Gateway)

Apply by post


To apply to register your club as a Community Amateur Sports Club (CASC) you can:

  • use the online service
  • fill in the form on screen, print and post to HMRC

To use the online service, you need a Government Gateway user ID and password. If you do not have a user ID, you can create one when you use the service.

The authorised official for the club must fill in this form. You’ll need to give HMRC extra information to support your application.

Email HMRC to ask for this form in Welsh (Cymraeg).

If you apply online

Fill in and submit the form online and post any additional information to the address shown under ‘If you apply by post’.

You’ll get a unique reference number when you submit the form online. Include this number with any extra information you send by post.

You can track the progress of the form online using the same reference number.

If you apply by post

Fill in the form on screen, print it off and send it to us along with any extra information.

If you post the form you can’t track its progress online.

You’ll need to fill in the form fully before you can print it. You cannot save a partly completed form so you should have all the information you’ll need with you before you start to fill it in.

Post your application and supporting information to:

Charities, Savings and International 2
United Kingdom

Before you start

This form is interactive (one that you complete on screen) and you must use Adobe Reader to complete it. Downloading Adobe Reader is free. Download the latest version of Adobe Reader.

HMRC are creating new versions of their forms that do not depend on Adobe Reader. While this work is in progress the following methods can be used to ensure the form will download or open in Adobe Reader:

  • whatever browser you are using, review your settings to make Adobe Reader the default program for opening PDF documents
  • Windows users should right click on the form link then select ‘Save target as’ or ‘Save link as’
  • Mac users should right click on the form link then select “Save linked file as”
  • save the form - the recommended place is in the documents folder
  • using Adobe Reader you can open the form

If the form still doesn’t open, then contact the Online Services helpdesk for more help.

Guidance on whether your sports club is eligible and how to register.

Updates to this page

Published 4 April 2014
Last updated 17 March 2023 + show all updates
  1. Guidance has been updated to explain that charities based in the EU, Iceland, Liechtenstein or Norway can no longer apply to get tax relief. If you got tax relief on or before 14 March 2023, you will continue to get it until April 2024.

  2. An online service is now available.

  3. Guidance on how to complete form CASC(A1) Community Amateur Sports Club Registration has been added to the page and the return address has been updated on the CASC(A1) form.

  4. First published.

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