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April 3, 2026If you’ve received a penalty from HMRC, don’t panic. In many cases, you may be able to appeal it by showing you had a “reasonable excuse.”
Understanding what qualifies and how to present your case properly can make the difference between paying the penalty or having it cancelled.
What is a Reasonable Excuse?
A reasonable excuse is something that stopped you from meeting a tax obligation despite taking reasonable care.
HMRC expects you to act responsibly, so the key question is:
Did you do everything you reasonably could to meet your obligations?
Examples of Acceptable Reasonable Excuses
HMRC may accept the following as valid reasons:
• Serious illness or hospitalisation
• Bereavement close to the deadline
• Unexpected system failures (HMRC or software issues)
• Fire, flood, or theft preventing access to records
• Postal delays outside your control
Each case is judged individually, so evidence is essential.
What HMRC Will Not Accept
Some common reasons are not accepted, including:
• Forgetting deadlines
• Lack of funds to pay tax
• Relying on someone else (e.g. accountant) without oversight
• Ignoring HMRC reminders
Simply put, avoidable situations are unlikely to succeed.
How to Make a Successful Appeal
To improve your chances:
1. Act Quickly
Submit your appeal within 30 days of the penalty notice.
2. Be Clear and Honest
Explain exactly what happened, when, and how it affected your ability to comply.
3. Provide Evidence
Include supporting documents such as:
• Medical letters
• Screenshots of system errors
• Insurance or incident reports
4. Show You Acted Promptly
Demonstrate that you corrected the issue as soon as possible.
Example Scenario
You missed a filing deadline due to a sudden hospital admission.
If you can show:
• The timing of your illness
• That it directly prevented submission
• That you filed as soon as you recovered
Your appeal is much more likely to succeed.
Key Tip: Prevention is Better Than Appeal
While appeals can work, it’s always better to avoid penalties in the first place:
• Set reminders for deadlines
• Keep digital records (especially with MTD changes)
• Work with a proactive accountant
Final Thoughts
HMRC penalties are not always final. If you genuinely had a reasonable excuse, you have the right to challenge them.
The key is to act quickly, provide evidence, and present your case clearly.
📩 Need help appealing an HMRC penalty?
We can review your case and handle the appeal on your behalf.
Taxes Done Right – we say it and mean it.
📞 Call: 0161 710 1901
📧 Email: Tax@TaxesDoneRight.co.uk
Dm Us:
www.taxesdoneright.co.uk




