Proposed HMRC penalties could catch out landlords
Landlords could face penalties of up to 30% of unpaid tax after making ‘careless’ mistakes in their self-assessment returns, the Daily Telegraph reports.
HMRC is seeking powers to decide whether an error should be treated as deliberate when a taxpayer fails to correct it.
Current rules generally regard an inaccuracy as deliberate only where someone knowingly submitted incorrect information.
Under the proposals, a careless mistake could attract a penalty ranging from 0% to 30% of the tax lost, while deliberate errors could carry penalties of up to 100%.
Tax experts raise concerns
Nimesh Shah, of accountancy firm Blick Rothenberg, told the newspaper: “Most people are not represented by a tax adviser – and so taxpayers may genuinely not know when they have made an error and could find themselves exposed to higher penalties.
“A taxpayer may make an innocent mistake because they don’t understand the rules.”
He added: “My concern here is that HMRC could apply hindsight to assess the taxpayer behaviour.
“This is the difficulty with the subjectivity in these provisions because I could envisage a good argument that she was ‘careless’ because she did not take advice on a complex matter.”
New correction notices
The legislation would place taxpayers under a new obligation to correct mistakes once they become aware of them.
HMRC could also issue a Customer Correction Notice requiring someone to check their tax position.
A taxpayer receiving their first notice within six years would avoid a penalty if they corrected a careless error.
Failure to comply could allow HMRC to treat the mistake as deliberate and issue tax assessments covering up to 20 years.
The technical consultation will remain open until 7 September, although no date has been set for the measures to take effect.
Tackle complex tax cases
HMRC said the policy would improve compliance and release resources for more complex tax avoidance cases.
An HMRC spokesman said: “We know most of our customers act in good faith and want to get their tax right.
“These proposals are designed to help minimise penalties for those who swiftly correct mistakes when we flag them and make the process of doing so quicker and easier.”
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Member Since October 2013 - Comments: 1713 - Articles: 3
10:26 AM, 4th August 2026, About 3 weeks ago
How to not be deemed ‘careless’ by HMRC, when you have clearly been ‘careless’, by Angela Rayner.
Member Since June 2015 - Comments: 351
11:29 AM, 4th August 2026, About 3 weeks ago
Would using flawed MTD software that puts in the wrong figures be deemed to be a careless mistake or would it be OK if the end of year submission corrects the flawed data?
Member Since January 2022 - Comments: 107
2:37 PM, 4th August 2026, About 3 weeks ago
Reply to the comment left by Jo Westlake at 04/08/2026 – 11:29
I was not aware that there is flawed software, but I guess I should not be surprised
Member Since June 2015 - Comments: 351
3:59 PM, 4th August 2026, About 3 weeks ago
Reply to the comment left by Chris H at 04/08/2026 – 14:37
The software I use assumes joint owners pay the percentage of the mortgage that their share of ownership represents. Obviously with Section 24 some of us may have chosen to reduce our mortgages.
For example I own a property jointly with my husband and son. I own 67%, my husband owns 11% and my son owns 22%. We receive 67%, 11% and 22% of the rent and pay 67%, 11% and 22% of all the expenses except the mortgage. My husband and I both paid off our share of the mortgage about 3 years ago, so my son pays 100% of the remaining mortgage. The software simply won’t recognise that.