Last year, a record-breaking 11.1m taxpayers complied with filing their personal tax returns for 2018/19 on time, while around 8% missed the deadline altogether.
More than 700,000 people left it to the last minute by filing their personal tax return on 31 January 2020.
The Revenue is keen to avoid a repeat performance this month and is urging taxpayers to get their 2019/20 returns in early.
Karl Khan, director-general of customer services at HMRC, said:
“The vast majority of self-assessment customers complete their tax return by the 31 January deadline, but you can send it back now and get it out of the way.”
HMRC is also allowing taxpayers to spread the costs of their 2019/20 tax bill through the time-to-pay facility.
By encouraging early submission of the self-assessment personal tax return, taxpayers will have time to put a plan in place before the final balancing payment is due.
“We know many customers will have been adversely affected by the coronavirus pandemic, or will need help to spread the cost of their tax bill,” added Khan.
“That’s why we’ve made it quick and simple to set up a payment plan to spread the costs and help people get back on their feet.”