If you wish to complete your 2022 to 2023 tax return online, you will need to purchase 3rd party commercial software, which can be found at
Self Assessment commercial software suppliers
This will allow you to until 31 January 2024 to submit your return. If you use a paper tax return, this will be 31 October 2023.
Please review the guidance below and determine whether a tax return will be required for 2023 to 2024.
Check if you need to send a Self Assessment tax return
If you leave the UK from 5 April 2023, you can contact HMRC to advise of this change and also advise if you no longer meet the criteria for Self Assesment.
You can telephone the Self Assessment team below.
Self Assessment: general enquiries