File your Self Assessment tax return online

You can file your Self Assessment tax return online if you:

  • are self-employed
  • are not self-employed but you still send a tax return, for example because you receive income from renting out a property

This service is also available in Welsh (Cymraeg).

You can also use the online service to:

  • view returns you’ve made before
  • check your details
  • print your tax calculation
  • sign up for paperless notifications

If you did not file a tax return last year

You must register for Self Assessment before using this service if:

  • you’re filing for the first time
  • you’ve sent a tax return in the past but did not send one last tax year

Check how to register for Self Assessment.

When you cannot use this service

You cannot use this service to file your tax return online:

Use commercial software or download or request other forms instead.

If you’re sending an SA100 tax return for the 2022 to 2023 tax year or earlier, get forms from the National Archives.

Sign in to file your tax return

You’ll need to sign in to use this service. If you do not already have sign in details, you’ll be able to create them.

You’ll also need your Unique Taxpayer Reference (UTR) number.

You do not have to complete your return in one go. You can save your entry and go back to it later if you need to.

Sign in

Prove your identity to use this service

You’ll be told if you need to prove your identity when you sign in. This is to keep your details safe and usually involves using photo ID like a passport or driving licence.