More than 630,000 residents across Lanarkshire filed their tax returns on deadline day, with the peak hour for filing between 4 and 5pm, when 52,475 completed their self assessment.
There were 20,947 residents who left it even later, completing between 11pm and midnight.
More than 12.2 million customers nationwide were expected to file a self assessment tax return this year.
The remaining 2.3 million customers expected to file by January 31 now have until February 28 to submit their late 2020/21 tax return and avoid a late filing penalty.
For any self assessment customer who is yet to pay their tax bill or set up a payment plan, interest will be applied to outstanding balances from February 1.
People have until April 1 to pay their tax in full, or set up a time to pay arrangement, to avoid a late payment penalty.
Those who are not yet able to file their tax return should pay an estimated amount as soon as possible, which will minimise any interest.
Self-employed people can use the calculator on GOV.UK to help estimate their tax bill.
Myrtle Lloyd, HMRC’s director general for customer services, said: “I’d like to thank the millions of customers and agents who sent us their tax return and paid in time for this week’s deadline.
“We’re waiving penalties this year, to give those who missed the deadline an extra month.
"And customers can set up a monthly payment plan online if they’re worried about paying their tax bill. Search ‘self assessment’ on GOV.UK to find out more.”
The existing Time to Pay service allows Lanarkshire customers, who are unable to pay their bill in full, to spread their tax payments into manageable monthly instalments.
Self assessment customers 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 people can use to pay their self assessment tax bill is available on GOV.UK.
The 2020/21 tax return covers earnings and payments during the pandemic.
Taxpayers will need to declare if they received any grants or payments from the COVID-19 support schemes up to April 5, 2021 on their self assessment, as these are taxable, including:
- self-employment income support scheme
- coronavirus job retention scheme
- other COVID-19 grants and support payments such as self-isolation payments, local authority grants and those for the Eat Out to Help Out scheme
The £500 one-off payment for working households receiving tax credits should not be reported in self assessment.
It is important that Lanarkshire residents check and make any changes to their tax return to make sure any SEISS or other COVID-19 support payments have been reported correctly in their self assessment.
HMRC urges everyone to be alert if they are contacted out of the blue by someone asking for money or personal information.
Taxpayers should always type in the full online address www.gov.uk/hmrc to get the correct link for filing their self assessment return online securely and free of charge.
HMRC sees high numbers of fraudsters emailing, calling or texting people claiming to be from the department.
If in doubt, HMRC advises not to reply directly to anything suspicious, but to contact them straight away and to search GOV.UK for ‘HMRC scams’.
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