Self assessment tax return question.

[EternalSunshine19]

If i started self employed work in January 2025 should i have submitted a Tax return in April 2025 for tax year 2024-2025? Or am i supposed to wait until April 2026 to submit a return?
i earned £800 from January to April 2025.

There is a trading income allowance of £1,000 so you are most likely covered. https://www.litrg.org.uk/working/self-employment/trading-allowance

If you had earnt over £1,000 then you would have needed to file a tax return to report 1 January to 5 April 2025 income and expenses.

If your earnings are likely to be more than £1,000 for the current tax year then you need to register as self-employed with HMRC. https://www.gov.uk/become-sole-trader/register-sole-trader

A tax return for a particular tax year needs to be filed by 31 January following the tax year. Eg 5 April 2025 tax return filed by 31 January 2026.

Is the £800 turnover before expenses or profit after expenses?

If turnover then you're covered by the trading allowance.

£800 was just turn over. Not profit

Thank you for all your replies :) really appreciate it

Your tax return for April 24 to April 25 is due 31st January 2026. However you only need to declare earnings over £1000.
You may still want to register as self employed in order to be able to pay class 2 national insurance.

Make sure you register as self employed with HMRC for self assessment and with the NI people. They don't talk to each other.....