HMRC’s figures show thousands of taxpayers are filing over the festive period, but leaving your return until late January risks penalties, stress and avoidable payment problems.

A new press release by HMRC has highlighted that 4,606 taxpayers took the time to file their tax return online on Christmas Day with a further 10,479 taxpayers completing their tax returns on Boxing Day. In total, 37,435 self-assessment returns were filed between 24 and 26 December and a further 54,053 returns between New Year’s Eve and New Year’s Day. HMRC even joked that festive filing has, for some, become as much a Christmas tradition as watching the King’s Speech or avoiding the washing up!

HMRC’s Chief Customer Officer, said:

‘Millions of customers have already completed their tax returns and can start 2026 with one less thing to worry about. For anyone yet to file, don’t leave it until the last minute. Filing now means you know exactly what you owe and have time to arrange payment. Search ‘Self-Assessment’ on GOV.UK to get started.’

If you are filing online for the first time you should ensure that you register to use HMRC’s self-assessment online service as soon as possible. Once registered an activation code will be sent by mail. This process can take up to 10 working days. 

We would encourage our readers to complete their tax return as early as possible to avoid the last-minute stress as the 31 January 2026 filing date looms. If you miss the filing deadline then you will be charged a £100 fixed penalty (unless you have a reasonable excuse) which applies even if there is no tax to pay, or if the tax due is paid on time. There are further penalties for late tax returns still outstanding 3 months, 6 months and 12 months after the deadline. There are also additional penalties for paying late of 5% of the tax unpaid at 30 days, 6 months and 12 months.