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
You can file your tax return anytime on or after 6 April following the end of the tax year. You must send your tax return by the deadline or you’ll get a penalty.
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:
- for a partnership
- for a trust or for an estate
- if you lived abroad as a non-resident
- to report multiple ‘chargeable gains’, for example from life insurance
- if you get income from a trust, you’re a Lloyd’s underwriter or a religious minister
Use commercial software or download or request other forms instead.
If you’re sending an SA100 tax return for the 2020 to 2021 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.
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.