From April 2027, HMRC will introduce a significant change to how late self-assessment tax returns are penalised. The long-standing system of automatic, time-based penalties will be abolished and replaced with a points-based penalty system. For many taxpayers, particularly sole traders, landlords, and company directors who complete self-assessment returns, this marks a major shift in how compliance is monitored and enforced. In this article, we explain what’s changing, why HMRC is making the change, and what it could mean for you.
How the Current Self-Assessment Penalty System Works
Under the existing rules, missing the self-assessment filing deadline triggers automatic financial penalties, regardless of how often the taxpayer has filed late before. Currently:
- A £100 fixed penalty is applied immediately after the deadline is missed
- Further penalties are added the longer the return remains outstanding
- Penalties increase even if no tax is owed
This system has been widely criticised for being inflexible, particularly for taxpayers who miss a deadline by a small margin or experience one-off issues.
What Is Changing From April 2027?
From April 2027, HMRC will replace the automatic penalty structure with a points-based system for late filing of self-assessment tax returns. Rather than an immediate fine, taxpayers will accumulate penalty points each time they file late. Financial penalties will only be issued once a certain number of points has been reached. The new system is designed to:
- Be fairer for occasional late filers
- Target persistent non-compliance
- Encourage better long-term filing behaviour
How the Points-Based Penalty System Will Work
Each time a self-assessment tax return is submitted late, the taxpayer will receive a penalty point rather than an automatic fine. Once the points threshold is reached, a financial penalty will be applied. Points will remain on record for a set period and will only be removed once the taxpayer demonstrates consistent, on-time filing. While HMRC has not yet confirmed the final thresholds for self-assessment, similar points-based systems already operate for VAT under Making Tax Digital, offering a strong indication of how this may work in practice.
Who Will Be Most Affected?
The changes will apply to anyone who submits self-assessment tax returns, including:
- Sole traders
- Landlords
- Company directors
- Individuals with additional income requiring self-assessment
Taxpayers who usually file on time are unlikely to see any immediate impact. However, those who regularly miss deadlines could face penalties more quickly once they reach the points threshold. For individuals who occasionally file late, the new system may offer greater flexibility and fewer immediate financial consequences.
Why Is HMRC Introducing This Change?
HMRC’s aim is to create a more proportionate and behaviour‑focused penalty system. Rather than penalising one‑off mistakes, the points‑based approach is intended to:
- Distinguish between occasional and habitual late filing
- Reduce disputes and appeals over automatic penalties
- Encourage consistent compliance over time
This change also aligns self‑assessment penalties more closely with other modernised tax systems, including VAT under Making Tax Digital.
What About Late Payment Penalties?
It’s important to note that the new points‑based system applies to late filing, not late payment. Interest and late payment penalties for unpaid tax will continue to apply separately. Filing your return on time does not remove the obligation to pay any tax owed by the deadline.
What Should Taxpayers Do Now?
Although the changes don’t come into effect until April 2027, it’s a good idea to prepare now:
- Continue filing returns on time to avoid future points
- Keep accurate records throughout the year
- Seek professional advice if your tax affairs are complex
For those who struggle with deadlines, working with an accountant can help ensure compliance and reduce the risk of penalties under both the current and future systems.
How PG Owen Can Help
At PG Owen, we help individuals and businesses stay compliant with their tax obligations while minimising stress and unnecessary penalties. Whether you need support with self‑assessment tax returns, advice on upcoming changes, or help planning ahead, our team is here to guide you through the process. If you have questions about how the new penalty system could affect you, or would like assistance with your self‑assessment return, get in touch with PG Owen for expert, practical advice. This article is intended for general information only and does not constitute tax advice. Rules may change, and individual circumstances will vary.