Question to the HM Treasury:

To ask the Chancellor of the Exchequer, what recent assessment she has made of the effectiveness of HMRC’s reminders, app notifications and communications in reducing the level of last-minute self assessment tax return filings.

HMRC app users can choose to enable ‘push notifications’ to receive a variety of updates, including payment notifications. At present, this feature operates on an ‘all or nothing’ basis, meaning users cannot select only payment notifications. Since the app launched, over 5.3 million users have opted to enable push notifications, although some may have subsequently chosen to disable them.

HMRC regularly shares guidance and updates to help taxpayers stay safe online and protect themselves from scams and fraudulent messages, particularly during the Self Assessment period.

They include practical advice and links to relevant materials in their Self Assessment emails, social media content, radio broadcasts, press releases, GOV.UK guidance and through other communication products.

For example, the following press releases regarding Self Assessment scams were published in August and December 2025 respectively:

https://www.gov.uk/government/news/scams-warning-as-self-assessment-customers-targeted

https://www.gov.uk/government/news/4800-self-assessment-scams-reported

HMRC’s guidance on phishing and scams can be found here: https://www.gov.uk/government/collections/hmrc-phishing-and-scams-detailed-information

Alongside communications regarding avoiding scams, HMRC also uses a range of communication activity to support customers to file their Self Assessment return on time. This starts with the notice to file issued to all relevant customers in April and with reminders issued directly to customer’s Personal Tax Accounts (PTA) and HMRC app or by letter, email and text. HMRC also encourages customers to file on time through their annual multi channel communications campaign.

A wide range of online help and support is available on GOV.UK. This includes guidance notes and help sheets, as well as online webinars and recorded videos on YouTube covering various Self Assessment scenarios.

In addition, there is information on GOV.UK on how a customer can ask for the requirement to file a Self Assessment tax return to be withdrawn if they no longer meet the Self Assessment criteria. This can be done through HMRC’s digital services, via their PTA or by calling HMRC.

Customers are also able to use the services of an agent to file their returns. In 2024/25, 59% of the Self Assessment population was represented. HMRC works closely with agent representative bodies to encourage the early filing of returns.

HMRC monitors the effectiveness of their communications. Last year, over 90% of customers filed their Self Assessment return on time. The Self Assessment campaign tracking report 2024 to 2025 can be found here: https://www.gov.uk/government/publications/self-assessment-campaign-tracking-2024-to-2025-report/self-assessment-campaign-tracking-report-2024-to-2025

Late filing penalties incentivise good filing behaviours. They are an important feature of tax administration to encourage taxpayers to meet their obligations and to provide sanctions for those who do not.

All customers have the right to appeal against late filing penalties within 30 days of the date of the penalty notice. HMRC will cancel penalties where a customer can demonstrate that they had a reasonable excuse for the failure to file their return on time and the failure was remedied shortly after the reasonable excuse ceased. HMRC will also cancel any late filing penalties when a return is not required, such as where a customer has ceased self-employment or no longer meets the Self Assessment criteria.

Penalty notices are issued automatically and therefore all customers who miss the filing deadline will receive a filing penalty.

The tables below set out the number of fixed £100 penalties raised for late filing, the daily penalties issued for late filing and the values of late filing penalties paid for each tax year since 2020.

Table 1: Fixed £100 penalties raised for late filing

Table 2: Daily penalties issued for late filing

The figures in tables 1 and 2 are rounded to the nearest 10,000, and are correct as of December 2025.

Table 3 – Values of late filing penalties paid for each tax year since 2020

The figures in table 3 are rounded to the nearest £1m and are correct as of December 2025.

Notes for tables 1 – 3:

1. Tax year relates to the year associated with the return, not the year the penalty was issued, e.g. if someone submits their Self Assessment return for the year 2019/20 in 2021, the penalty would be associated with the 2019/20 tax year in the data above.
2. Figures are not final as penalties continue to be charged and collected for previous years.
3. Caution should be applied when comparing across years, as the sum of penalties collected will continue to rise as returns come in and the population grows.
4. It is possible for an individual to receive multiple sets of penalties.
5. Penalties in the tables above include penalties for individuals and for partnerships.
6. Penalty data for the tax year 2024/25 is not yet available as the online return deadline for that tax year is 31 January 2026.