In the last few years, HMRC charged 420,000 people with £100 late filing penalties when they earned too little to pay tax. People earning under £6k received twice as many penalties as people earning more than £83k.
Rachel Reeves should reform the penalties system.
Our previous reporting on the impact of HMRC penalties on people on low incomes is here. As the Observer reported on Sunday, we now have better data, and the first data on the impact of the £300 penalties for filing one year late. It’s as concerning as our previous data on the impact of the £100 penalties.
We’ve been presenting a series of tax reform proposals in the run-up to the Budget. This is the seventh – you can see the complete set here.
The impact of penalties on the poor
This chart shows the percentage of taxpayers in each income decile who were charged a £100 fixed late filing penalty:1

The green bars show where penalties were assessed but successfully appealed. The red bars show where the penalty was charged. The black vertical line shows the personal allowance, below which nobody should have any tax liability.
- There are 420,000 penalties to the left of the black line. That means 420,000 £100 late filing penalties were assessed on people who earned too little to pay tax. Another 150,000 were charged with penalties but successfully appealed.
- More than twice as many £100 penalties were charged on people in the lowest earning decile (earning less than £6k) than in the highest earning decile (earning more than £83k2).
There’s an even more extreme pattern in the £300 penalties for filing a year late: three times as many penalties in the lowest earning decile than the highest earning.

Every penalty issued to the left of the “personal allowance line” is a policy failure. Those penalties should never have been issued.
The full dataset and bar chart code is here, and there’s more detail on the technical background here.
Why are people on such low incomes being asked to complete a self assessment return?
We don’t know, but likely some mixture of:
- People with self-employment income (which always requires self assessment),
- People who had higher income the previous year, and
- HMRC mistake.
The human impact
Several years of penalties can add up to thousands of pounds – here’s a typical example that was sent to us (digits obscured to preserve privacy):
![Screenshot of an HMRC online tax account showing current amounts due for payment across four tax years: Unique Taxpayer Reference (UTR): [redacted]
Current position
£4,949.[redacted] is due for payment. A breakdown of this amount is outlined in the table below. Follow the appropriate link within the 'Description' column to find out more.
Description Amount (£)
Tax year ending 05 Apr 2020 1,398.[redacted]
Tax year ending 05 Apr 2019 342.[redacted]
Tax year ending 05 Apr 2018 1,471.[redacted]
Tax year ending 05 Apr 2017 1,735.[redacted]
Total 4,949.[redacted]
Interest may be charged on late payment of amounts due now.](https://taxpolicy.org.uk/wp-content/uploads/2023/06/Screenshot-2023-06-21-at-15.56.48.png)
People are falling into debt, and in one case we’re aware of, actually becoming homeless, as a result of HMRC penalties.
Even just the lowest penalty of £100 is a large proportion of the weekly income of someone on a low income (indeed over 100% of the weekly income for someone in the lowest income decile):

A respected retired tax tribunal judge has described the current UK penalties regime as the most punitive in the world for people on low incomes.3
Since publishing our initial reports, we’ve been inundated with stories from people on low incomes affected by penalties when they had no tax to pay.
These are vulnerable people, at a low point in their lives – and the same difficulties which meant they missed the filing deadline mean they often won’t lodge an appeal, and may take months before they pay the penalties (racking up additional penalties in the meantime). A successful appeal is not a success – it means that someone with limited time and resources has had to navigate what is to many a complex and difficult administrative system.
Here are just two of the many responses we received:
![Screenshot of direct messages to Dan regarding HMRC late fees and penalties: Hi Dan, I have given up trying to even sort my tax as it revolves around a rebate they gave me in 1994 I think and then decided 6 months later to ask for it back. Also been self employed for ages but never earned enough to even be taxed and now it about £7k sue to late fees and penalties. I can’t afford any of it and even though I did try and sort it a few times they could never settle on what I actually owed them according to earnings etc. I really don’t know how to solve it now. And can never speak to anyone there with an ounce of compassion or understanding. Cheers, [redacted]
Tue 7:24 PM
I even wrote to them to say I was no longer working under the business name they have on file but never received anything. I am afraid to say now I have stuck head in sand as my father recently passed away.
Tue 7:27 PM](https://taxpolicy.org.uk/wp-content/uploads/2023/06/Screenshot-2023-06-24-at-11.08.52.png)
![Screenshot of a message regarding HMRC late filing penalties for a partnership tax return: [illegible]
I was fined 1200 in 2021 for filing my partnership tax return a day late. Between both of us, we earned no more than 16k that year. 8k each. And we’re fined 1200 EACH for filing a day late.
I still haven’t paid it, as I was out of work due to illness for a long time (I’m also disabled, they’re just great aren’t they?) and had no income. But now I’m earning, and I’m earning good money, I know they’ll be asking for it again,do you know if is there anything I can do to squash it???](https://taxpolicy.org.uk/wp-content/uploads/2023/03/image-8.png)
What should change
Until 2010, nobody could be charged a penalty which exceeded the tax due. If you were issued a late filing penalty, and then submitted a return showing no tax was due, the penalty was cancelled.
The data provides compelling evidence that the law should go back to how it was. We have more detailed recommendations here.
This is one tax reform that should be easy for any Labour Chancellor. The cost is likely negligible; but there would be a real benefit to some of the poorest and most vulnerable in society.
Many thanks to HMRC for their detailed and open response to our FOIA requests on penalties and income levels. And thanks to all the tax professionals who alerted me to this issue – otherwise I never would have been aware of it.
All the data and code for these charts is here.
![Screenshot of an article headline and lead photo from The Observer, dated 26 October 2024: The Observer
Tax
Thousands are fined by HMRC even though they don’t owe any UK tax
Campaigners call for reform after more than 83,000 low earners are hit by HMRC penalties
Michael Savage and Raphael Boyd
Sat 26 Oct 2024 16.00 BST
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[Text on envelopes in photo]:
HM Revenue & Customs
HM Revenue & Customs
HM Revenue & Customs
There are concerns about the extent to which people who are vulnerable or facing financial hardship are being issued with the penalties for failing to submit a self-assessment tax form on time. Photograph: Ascannio/Alamy](https://taxpolicy.org.uk/wp-content/uploads/2024/10/Screenshot-2024-10-28-at-16.04.21.jpg)
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