(qlmbusinessnews.com . Wed 4th Feb, 2026) London, UK —
Avoid Hefty Fines: Essential Guide to Last-Minute Tax Return Submission for 2024-25
Around one million individuals have missed the crucial deadline for submitting their tax returns, facing penalties, HM Revenue and Customs (HMRC) reported.
In the critical final hour before the 2024-25 returns deadline at the stroke of midnight on Saturday, a sizable 27,456 hustled to file their documentation.

With HMRC extending its helpline and web chat services over the weekend to accommodate last-minute filers, the peak hour for online self-assessment submissions was recorded from 17:00 GMT on the last day. Of the nearly 11.5 million who managed to file, 475,722 left it till the very last day, whereas those failing to meet the deadline are now subject to an immediate £100 fine.
“Myrtle Lloyd, HMRC's chief customer officer, extended her gratitude to the millions who complied by the 31 January deadline, urging those who didn't to submit their returns without delay to avoid further penalties and interest charges for late payment.
In the UK, while many have their taxes automatically deducted via the PAYE system, individuals with more than one income source, including those who earned over £1,000 through self-employment or property rental in the 2024-25 financial cycle, need to file a self-assessment.
Exemptions this year were granted to individuals earning above £150,000 and those who shifted to managing the high-income child benefit charge through PAYE; categories which previously required filing.
The aftermath for late filers begins with a fixed £100 penalty, which escalates over time with additional charges, including daily fines, further penalties amounting to 5% of the tax due or £300 (whichever is higher), and interest on the unpaid tax.
HMRC, which annually garners tens of millions from these penalties, promises to consider genuine excuses for delays, potentially waiving fines for those with valid reasons.
Tax specialists encourage those considering an appeal against their fine to nevertheless pay the initial fee to avoid accruing interest charges if the appeal is unsuccessful. “Even if appealing does mean spending money, it prevents additional charges on the fine itself from its due date if you happen to lose your appeal,” explained Charlene Young, a senior pensions and savings expert at investment platform AJ Bell.
She further advised those unable to appeal but facing fines to explore payment plans promptly, underscoring the importance of taking action rather than avoiding the issue.
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