Do I need to submit 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
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
You can check if you need to submit a tax return via the Self Assessment here.