Are you self employed but have not yet registered with HMRC?
 
Anyone that is newly self employed before 6th April 2023 has just 2 weeks until 5 October to tell HMRC and register.
New Self Assessment customers could be someone who has set up a side hustle to earn money in addition to their PAYE job or disposed of cryptoassets, they may be newly self-employed or a new landlord renting out property. Whatever the circumstances, if a customer has any income that they have not already paid UK tax on, they need to register for Self Assessment.
The deadline for customers to file their tax return online and pay any tax owed for the 2022 to 2023 tax year is 31 January 2024.