We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
You can file your Self Assessment tax return online if you:
This service is also available in Welsh (Cymraeg).
You can also use the online service to:
You must register for Self Assessment before using this service if:
Check how to register for Self Assessment.
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 2021 to 2022 tax year or earlier, get forms from the National Archives.
To use this service, you’ll need to sign in using your Government Gateway user ID and password.
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.
You’ll have to prove your identity to register for Government Gateway if you have not used it before.
You’ll need your National Insurance number or postcode and 2 of the following:
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. We’ll send you a link to a feedback form. It will take only 2 minutes to fill in. Don’t worry we won’t send you spam or share your email address with anyone.