Is your 2019-20 tax return filed?

Readers who have not yet filed their 2019-20 self-assessment tax return for 2019-20 have less than one month to do so. The online filing deadline is 31 January 2021.

Could clients reading this article, who have not supplied all the information we have requested to complete their outstanding 2019-20 returns, please contact us with any missing information without delay. We are now entering that period of ground-rush where the deadline approaches at ever increasing speed.

Initially, late filing – after 31 January 2021 – will trigger a penalty of £100. After three months this increases to a daily penalty of £10 for a maximum of 90 days. Followed by further penalties beyond this period.

There are excuses for late filing that HMRC may accept to mitigate any penalties. HMRC classify these as reasonable excuses. A reasonable excuse is something that stopped you meeting a tax obligation that you took reasonable care to meet, for example:

  • your partner or another close relative died shortly before the tax return or payment deadline

  • you had an unexpected stay in hospital that prevented you from dealing with your tax affairs

  • you had a serious or life-threatening illness

  • your computer or software failed just before or while you were preparing your online return

  • service issues with HM Revenue and Customs (HMRC) online services

  • a fire, flood or theft prevented you from completing your tax return

  • postal delays that you could not have predicted

  • delays related to a disability you have

You must send your return or payment as soon as possible after your reasonable excuse is resolved.

If you’re affected by coronavirus (COVID-19)

HMRC will consider coronavirus as a reasonable excuse for missing some tax obligations (such as payments or filing dates).

Explain how you were affected by coronavirus in your appeal. You must still make the return or payment as soon as you can.

What will not count as a reasonable excuse

The following will not be accepted as a reasonable excuse:

  • you relied on someone else to send your return and they did not

  • your cheque bounced or payment failed because you did not have enough money

  • you found the HMRC online system too difficult to use

  • you did not get a reminder from HMRC

  • you made a mistake on your tax return

Filing your return will not only avoid any penalties for late filing but will also crystalise the amount of tax and other liabilities – NIC and student loan repayments – that may also be due for payment 31 January 2021.

Latest Blog
14
Jan

What the workers rights reform bill means for UK employers

The UK government has confirmed the revised terms of its wide-ranging workers’ ...

Read More
13
Jan

How rising income can cost you valuable tax allowances and benefits

For many taxpayers, an increase in income feels like a straightforward positive. High...

Read More
08
Jan

HMRC names finalists in drive to close the tax gap

In December 2025, HM Revenue and Customs announced the finalists in a competition aim...

Read More
06
Jan

Government changes course on inheritance tax reliefs

In late 2025 the government confirmed a significant change of direction on inheritanc...

Read More