Self Assessment Online is a quick, efficient and highly secure service that allows you to complete your tax return and check your account details online.
You will find your User ID on the card sent to you by HM Revenue and Customs (HMRC) when you first registered to use an HMRC online service
The link below will take you to the log in and registration page for Self Assessment Online. When you log out of the service you'll be returned to Directgov. HMRC's own terms and conditions will apply while you use Self Assessment online.
When logging in you will need your User ID and password.
If you have not used Self Assessment online before, you'll need to register, enrol and 'activate' your account before you can complete your tax return online. You can find out how to do this, and about the many benefits of filing online, by following the link below.
Use the link below to check whether there are any planned outages or known issues affecting Self Assessment Online or other HMRC services.
For technical help when using Self Assessment Online, call the HMRC Online Services Helpdesk.
Do it online
