Reasonable excuses for filing a late self-assessment tax return

The penalties for filling a tax return late are very high. However, penalties for late filing can sometimes be cancelled if the reason for not filing on time is because something unexpected or outside your control happens.

What is a reasonable excuse?
A reasonable excuse is something that stopped you meeting a tax obligation that you took reasonable care to meet, for example;

  • Your partner or close relative passes away just before the filing deadline
  • You are diagnosed with a serious illness
  • Your computer or software fails at the time you were preparing to send your tax return
  • Postal delays that were not in your control
  • Documents being lost through fire, theft or flood
  • Service issues HMRC Online Services

What wont count as a reasonable excuse

  • You asked someone to file your tax return and they forgot
  • You didn’t receive any reminders form HMRC
  • Ignorance of tax law

How to Appeal a Penalty
If you receive a penalty letter through the post from HMRC, then use the appeal form that comes with it.
To appeal you will need the following;

  • the date the penalty was issued
  • the date you filed your Self-Assessment tax return
  • details of your reasonable excuse for late filing

If you don’t receive a penalty letter you can send a signed letter to HMRC with your name, UTR (Unique Tax Reference) number and the reason for late filing.
You will need to submit your appeal within 30 days of the date of the penalty notice.

For more information or advice, please Contact Us.

By Ejaaz Qureshi


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Reddy Siddiqui is the trading name of Reddy Siddiqui LLP, a limited liability partnership. This firm is registered to carry on audit work in the UK and Ireland by the Institute of Chartered Accountants in England and Wales. Registered office is 183-189 The Vale, London W3 7RW. Registered in England and Wales No. OC417809

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