If you earn more than £1,000 from additional income such as selling online, you may need to register for Self Assessment.
Anyone earning extra income through a side hustle is being urged to check if they need to register for Self Assessment.
HM Revenue and Customs (HMRC) is encouraging those with additional income streams, eg, from online selling and content creation to dog walking and property rental, to understand their tax obligations and get ahead of the January deadline rush by filing their tax return now.
£1,000 threshold for side hustles
The £1,000 threshold is key anyone who earns more than this from their side hustle in a tax year may need to register for Self Assessment and complete a tax return. This includes gains or income received from cryptoassets.
Check if you need to register for Self Assessment
Anyone who thinks they may need to complete a tax return for the 2024 to 2025 tax year can use the checker tool to find out. New entrants to Self Assessment must register to receive their Unique Taxpayer Reference.
Further tax help for side hustles
HMRC has a dedicated campaign site that pulls together key tax guidance on the rules for different side hustles.
See take the hassle out of your side hustle.
First published 26 June 2025
