abc self assessment

Self Assessment software for 2020-21

Software for the 2020-21 tax year - which ended 5 April 2021 - is below. Software for previous years is available here for SA100 (Individual returns) and here for SA800 (Partnership returns).

ABC SA100 2021 - Individual tax return for year ending 5 April 2021


ABC SA800 2021 - Partnership tax return for year ending 5 April 2020


Our Self Assessment products are fully functional (except for actual submission to HMRC) in evaluation mode: you can download and install the software for free, and enter your data to check that you like the product (and see your tax liability calculation). When you are ready to submit to HMRC, purchase a licence to enable submission.

Note that in order to submit to HMRC you will need to have a Government Gateway ID and have enrolled it for the Self Assessment service (where HMRC send an activation code in the post).

Note that HMRC only supports electronic submission for a particular tax year up to 4 years after the end of that tax year - so electronic submission is not possible for years prior to 2017-18. You can submit via paper forms, which are available on the HMRC website.

System requirements

  • Windows 7 or above
  • Adobe Reader 7.0 or above (to view the HMRC notes .pdf files)
  • OS X