You'll need to send a tax return if in the last year you fall within any of the criteria:
- you were self-employed – you can deduct allowable expenses
- you got £1,000 or more in untaxed income, eg from renting out a property or savings and investments
- your savings or investment income was £10,000 or more before tax
- you made profits from selling things like shares, a second home or other chargeable assets and need to pay Capital Gains Tax
- you were a company director – unless it was for a non-profit organisation (eg a charity) and you didn’t get any pay or benefits, like a company car
- your income (or your partner’s) was over £50,000 and one of you claimed Child Benefit
- you had income from abroad that you needed to pay tax on
- you lived abroad and had a UK income
- you got dividends from shares and you’re a higher or additional rate taxpayer.
- your income was over £100,000
- you were a trustee of a trust or registered pension scheme
- you had a P800 from HMRC saying you didn’t pay enough tax last year – and you didn’t pay what you owe through your tax code or with a voluntary payment