Self Assessment Threshold Change: Who Needs to File in 2026-27?

The rules surrounding the Self Assessment threshold have changed significantly in recent years. Many taxpayers previously believed that earning above a certain PAYE income automatically meant they had to complete a Self Assessment tax return. However, this is no longer the case. For a complete overview of how personal tax works across all income types and filing obligations in the UK, our UK personal tax guide for employees and self-employed individuals provides the broader framework before exploring the Self Assessment threshold changes in detail.

For the 2026-27 tax year, the requirement to submit a tax return is no longer based solely on exceeding a PAYE income threshold. Instead, HMRC Self Assessment obligations depend on your individual tax circumstances and whether you meet HMRC’s filing criteria.

If you only receive employment income through PAYE, you may no longer need to complete a Self Assessment tax return. However, many taxpayers with additional income or more complex affairs will still need to file annually.

What Changed to the Self Assessment Threshold?

The previous Self Assessment threshold change removed the automatic requirement for employees taxed entirely through PAYE to submit a tax return simply because their income exceeded a specified level.

Instead of using a fixed income threshold, HMRC now considers whether your overall tax affairs require a return to be completed. For a full breakdown of how HMRC determines whether you need to file and what factors are assessed, our dedicated guide on whether you need to file a Self Assessment tax return covers the complete decision framework in detail.
This approach reduces unnecessary filing requirements for many PAYE employees while ensuring taxpayers with more complex circumstances continue reporting their income correctly.

Who Still Needs to Complete a Self Assessment Tax Return?

Although the automatic Self Assessment threshold has been removed for many PAYE employees, you may still need to file a return if you meet HMRC’s reporting requirements.

Common situations include:

• Receiving untaxed income.
• Being self-employed with qualifying trading income.
• Being a partner in a business partnership.
• Receiving property or rental income.
• Being liable for the High Income Child Benefit Charge.
• Making taxable capital gains.
• Receiving overseas income that must be reported.
• Being specifically asked by HMRC to complete a tax return.

Even if your salary is taxed entirely through PAYE, these circumstances may still require you to submit a Self Assessment tax return.

Does PAYE Mean You Can Ignore Self Assessment?

Not necessarily.

The removal of the income-based threshold does not remove every PAYE Self Assessment obligation. Many employees continue to have additional income sources or tax liabilities that require reporting to HMRC.

Examples include company directors, landlords, individuals with investment income, or employees receiving taxable benefits that cannot be fully collected through PAYE.

How to Check if You Need to File

If you are unsure whether the Self Assessment threshold change affects you, the safest approach is to review your complete income position rather than looking only at your employment income.

HMRC considers your overall tax circumstances, including employment income, self-employment, property income, investments, taxable gains and other reportable income sources before determining whether a return is required.

Registering for Self Assessment

If you need to submit a Self Assessment tax return for the first time, you should register with HMRC as soon as you become aware of your filing obligation.

In most cases, you must register by 5 October following the end of the tax year in which you first become liable to file a return. Registering early gives HMRC enough time to issue your Unique Taxpayer Reference (UTR) and allows you to prepare your return without unnecessary delays.

Important Filing Deadlines

Meeting HMRC deadlines is essential to avoid penalties and interest charges.

• Register for Self Assessment by 5 October following the relevant tax year if required.
• Submit online Self Assessment tax returns by 31 January following the end of the tax year.
• Pay any Income Tax due by the same 31 January deadline.

Missing these deadlines can result in automatic penalties, interest on unpaid tax and additional compliance issues.

Common Mistakes to Avoid

Many taxpayers assume they no longer need to file because the Self Assessment threshold has changed. In reality, filing obligations are now determined by your overall tax position rather than a PAYE income figure alone.

Common mistakes include:

• Assuming PAYE income means a tax return is never required.
• Failing to declare rental or investment income.
• Not reporting capital gains where required.
• Missing registration or filing deadlines.
• Ignoring correspondence issued by HMRC Self Assessment.

Reviewing your income sources each year helps ensure you remain compliant with current HMRC requirements.

Why Professional Advice Matters

Changes to the Self Assessment threshold have simplified reporting for some taxpayers but created uncertainty for others. If you receive income from more than one source, own rental property, operate a business or have investment income, professional advice can help determine whether a return is required and ensure it is completed accurately.

Correct planning can also identify available tax reliefs, reduce the risk of penalties and help you manage your overall Income Tax position more efficiently.

Conclusion

The removal of the income-based Self Assessment threshold does not mean fewer taxpayers need to consider their filing obligations. Instead, HMRC now focuses on the nature of your income and individual tax circumstances rather than applying a simple PAYE income limit.

If you are unsure whether you need to complete a Self Assessment tax return, reviewing your position before the filing deadline can prevent unnecessary penalties and ensure you remain fully compliant with HMRC requirements.

Cigma Accounting supports individuals, landlords, company directors and business owners across the UK with accurate tax reporting, Self Assessment compliance and proactive tax planning. Whether you are filing for the first time or need ongoing support, our team can help you meet your obligations with confidence.

Expert Guidance on the Self Assessment Threshold With Cigma Accounting in London

Understanding the Self Assessment threshold is important for taxpayers who want to know whether they need to submit a tax return following recent HMRC changes. Cigma Accounting supports clients across the Wimbledon Hub, including individuals and businesses in Morden and Colliers Wood, helping them determine their filing obligations and stay compliant with HMRC requirements.

The recent Self Assessment threshold change affects some individuals who are taxed through PAYE, but it does not remove the requirement to file in every circumstance. Understanding when a Self Assessment tax return is still required under HMRC Self Assessment rules, including cases involving PAYE Self Assessment, helps taxpayers avoid missed filing obligations and unnecessary penalties.