Guidance

Business profits toolkit

Get help if you’re a tax agent or adviser who has clients with business profits to declare on Self Assessment and Company Tax Returns.

• From: HM Revenue & Customs
• Published: 1 June 2014
• Last updated: 6 April 2025
  Show all updates

  1. 6 April 2025

     Business profits toolkit updated for the year 2021 to 2022.

  2. 29 April 2022

     The Private and personal expenditure toolkit: Self Assessment Tax Returns (2016 to 2017) has been removed.

  3. 8 April 2022

     The Agent toolkit for 'Business profits' has been updated for 2021 to 2022.

  4. 14 December 2021

     Agent toolkit for business profits added for 2020 to 2021.

  5. 6 April 2020

     Agent toolkit for 'Business profit' added for 2019 to 2020.

  6. 19 June 2019

     The Business profits toolkit: Self Assessment and Company Tax Returns (2018 to 2019) has been added.

  7. 11 July 2018

     Agent toolkit for 'business profits' updated for the 2017 to 2018 tax year.

  8. 11 July 2017

     Agent toolkit for business profits has been updated for the 2016 to 2017 tax year.

  9. 6 July 2016

     The Business profits toolkit: Self-Assessment and Company Tax Returns (2015 to 2016) has been added to the page.

  10. 11 June 2015

      Agent toolkit for Business Profits updated for the 2014 to 2015 tax year.

  11. 1 June 2014

      First published.

Documents

Business profits toolkit: Self Assessment and Company Tax Returns (2021 to 2022)

ODT, 404 KB

This file is in an OpenDocument format

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Business profits toolkit: Self Assessment and Company Tax Returns (2020 to 2021)

ODT, 403 KB

This file is in an OpenDocument format

Business profits toolkit: Self Assessment and Company Tax Returns (2019 to 2020)

PDF, 1.1 MB, 27 pages

Business profits toolkit: Self Assessment and Company Tax Returns (2018 to 2019)

PDF, 1.08 MB, 26 pages

Business profits toolkit: Self-Assessment and Company Tax Returns (2017 to 2018)

PDF, 1.03 MB, 27 pages

Details

Find out about common errors on business profits in client tax returns.