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The self-assessment tax return deadline for the 2023/24 tax year is 31st October 2024 for those who complete paper tax returns (unless you are a trustee of a registered pension scheme or a non-resident company).  

If you complete your self-assessment tax return online, the deadline is 31st January 2024. 

If you have an accountant, you should speak to them to confirm which deadline you need to meet. Most people complete their tax returns online, so the 31st January deadline is the date most widely used. 

It is important to get your tax return information to your accountant as soon as possible following the end of the tax year (5th April). This gives your accountant plenty of time to complete your tax return ahead of HMRC's filing deadline. 

Ensuring the work is not rushed will mean there is more time for you to check through your tax return ahead of submission. You will also be able to budget for any tax that may be payable to HMRC by 31st January.  If you are due a refund from HMRC you will also receive this earlier. Check out other benefits of filing your tax return early in our article. 

Need help filing your self-assessment tax return? 

At TaxAssist Accountants, we can help you complete your tax return and assist you with meeting your deadlines. We work with many self-employed individuals and business owners and we can help you too. If you need help with your self-assessment affairs, call us today on 0203 794 8788 or drop us a line using our online enquiry form

Frequently Asked Questions

If you earn more than £150,000, HMRC have confirmed that you will need to file a tax return. If your earnings are below £150,000 you may still have to submit a tax return, depending on your other income and circumstances.

Self-employed individuals, partners in business partnerships, landlords and individuals earnings over £150,000 may be required to file a tax return. Those in receipt of child benefit and earning over £60,000, or higher rate taxpayers earning interest income over £500 may need to complete a tax return too. For a comprehensive list check HMRC’s content on who must send a tax return.

Generally, if you earn at least £1,000 of trading income you should consider if you need to file a tax return. This will depend on what other income you are receiving and speaking to an accountant, or using HMRC’s online checker will help you determine if you need to file a tax return.

Date published 20 Sep 2024

This article is intended to inform rather than advise and is based on legislation and practice at the time. Taxpayer’s circumstances do vary and if you feel that the information provided is beneficial it is important that you contact us before implementation. If you take, or do not take action as a result of reading this article, before receiving our written endorsement, we will accept no responsibility for any financial loss incurred.

Catherine Heinen, FCCA

Catherine is a Technical Content Writer at TaxAssist Accountants, and a qualified accountant. With experience working at two accountancy practices in the UK top 50 accountancy firms according to Accountancy Age, Catherine has significant experience in accounts, tax returns and advising clients. Catherine ensures businesses, business owners and individuals are kept up to date and informed by providing concise and informative technical material.

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