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.
We also use cookies set by other sites to help us deliver content from their 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
Understand your Self Assessment tax bill - your tax calculation, statement, balancing payments, payments on account.
When you submit a Self Assessment tax return, you’ll get a: Self…
Your Self Assessment statement shows: the tax you owe at the time the…
Your tax calculation (SA302) shows: your total income on which tax is due…
‘Payments on account’ are payments towards your next tax bill (including…
Self Assessment tax returns - deadlines, who must send a tax return, penalties, corrections and returns for someone who has died.
Self Assessment is a system HM Revenue and Customs (HMRC) uses to collect…
You must send a tax return if, in the last tax year (6 April to 5 April),…
You must register for Self Assessment by 5 October if you need to complete…
You can send a tax return by either: submitting an online return sending a…
You must tell HMRC as soon as possible if you believe you no longer need…
HM Revenue and Customs (HMRC) must receive your tax return and any money…
You’ll get a penalty if you need to send a tax return and you miss the…
You can make a change to a tax return after you filed it, for example…
You may be able to get a tax refund (also known as a ‘repayment’ or…
If you need help with Self Assessment, you can: appoint someone to fill in…
If you’re the ‘personal representative’ (an executor or administrator) for…
CHP Scheme. Complete Self-Assessment form F4 for existing schemes 2MWe or over and F4(S) for schemes under 2MWe
Get help with Self Assessment by using online tools and helpsheets, watching YouTube videos or asking the digital assistant or community forums a question.
Use supplementary pages SA103S to record self-employment income on your SA100 tax return if your annual business turnover was below the VAT threshold for the tax year.
When you may need to make a change to your Self Assessment tax return for SEISS payments, and how to do it.
The ethics self-assessment process aims to offer researchers an easy-to-use framework to review the ethics of their projects throughout the research cycle.
Find out how to do a rapid lateral flow test for COVID-19. Rapid lateral flow tests show the result on a device that comes with the test.
Use form SA1 to register for Self Assessment for any reason other than self-employment.
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. Please fill in this survey (opens in a new tab and requires JavaScript).