More than 12.2 million customers are expected to complete a tax return for the 2020/21 tax year.

HMRC is urging the millions of customers still to file their tax return, pay any outstanding liabilities or set up a payment plan, to do so ahead of the deadline as interest will be applied to all outstanding balances from 1 February.

However, earlier this month, HMRC announced they would waive penalties for one month for late filing of tax returns and late payments.

The changes mean:

• Anyone who cannot file their return by the 31 January deadline will not receive a late filing penalty if they file by 28 February
• Anyone who cannot pay their tax liabilities by the 31 January deadline will not receive a late payment penalty if they pay their tax in full, or set up a time to pay arrangement, by 1 April

Myrtle Lloyd, HMRC’s director general for customer services, said: “We know some customers may struggle to meet the Self Assessment deadline on 31 January which is why we have waived penalties for one month, giving them extra time to meet their obligations.

“And if anyone is worried about paying their tax bill, they can set up a monthly payment plan online – search ‘pay my Self Assessment’ on GOV.UK.

HMRC is offering support to customers completing their tax return. Anyone who is yet to file their return can book a place to access live webinars, running throughout January on GOV.UK.

Alternatively, recordings are available on GOV.UK. In addition, HMRC has produced resources to help customers meet their obligations including YouTube videos and Self Assessment guidance on GOV.UK.

The existing Time to Pay service allows any individual or business who needs it the option to spread their tax payments over time. Self Assessment taxpayers with up to £30,000 of tax debt can do this online once they have filed their return.

If customers owe more than £30,000, or need longer to pay, they should call the Self Assessment Payment Helpline on 0300 200 3822.

A full list of the payment methods taxpayers can use to pay their Self Assessment tax bill is available on GOV.UK.