Self Assessment tax returns

Who must send a tax return
You must send a tax return if, in the last tax year (6 April to 5 April), you were:

self-employed as a ‘sole trader’ and earned more than £1,000 (before taking off anything you can claim tax relief on)
a partner in a business partnership
You will not usually need to send a return if your only income is from your wages or pension. But you may need to send one if you have any other untaxed income, such as:

money from renting out a property
tips and commission
income from savings, investments and dividends
foreign income

Deadlines
HM Revenue and Customs (HMRC) must receive your tax return and any money you owe by the deadline.

The last tax year started on 6 April 2020 and ended on 5 April 2021.

Self Assessment Deadline

Online tax returns Midnight 31 January 2022
Pay the tax you owe Midnight 31 January 2022
There’s usually a second payment deadline of 31 July if you make advance payments towards your bill (known as ‘payments on account’).

You’ll usually pay a penalty if you’re late. You can appeal against a penalty if you have a reasonable excuse.