Registering for Self Assessment

You must tell HMRC by 5 October if you need to complete a tax return for the previous tax year and you have not sent one before. 

You can tell HMRC by registering for Self Assessment. Check how to register for Self Assessment

You’ll need to keep records (for example bank statements or receipts) so you can fill in your tax return correctly. 

Preparing for your tax bill 

You’ll need to pay your tax bill by 31 January. 

To prepare, once you’ve registered you can: