Website of the UK government
Please note that this website has a UK government accesskeys system.
Main menu
Page menu
Money, tax and benefits
Self Assessment - your tax return
Deadline for online tax returns
If you haven't sent in your tax return, you've missed the deadline for sending it on paper – you must now send it online
Introduction to Self Assessment
What Self Assessment means, who needs to complete a tax return, types of tax return and more...
Do you need to complete a tax return?
Find out if you need to complete a Self Assessment tax return and how to get one if you do
Completing your tax return (individuals and directors)
Information you'll need to complete your tax return, key steps, common mistakes and where to get help
Understanding and using Self Assessment Online
Benefits of filing your tax return online, viewing statements online and how to sign up
Software you can use for your tax return
An overview of the software you can use to send your tax return and supplementary pages to HM Revenue & Customs
Understanding your Self Assessment Statement
Self Assessment Statement explained, how to check the figures and change Payments on Account
Tax return deadlines and penalties
The key deadlines for sending in your tax return and paying any tax due, automatic penalties and interest payable if you're late
Understanding your tax calculation
Your Self Assessment tax calculation explained and why it's important to check it and tell HM Revenue & Customs if you think it is wrong
What to do if you can't pay your tax bill
Who to contact if you can't pay your tax bill on time and how to make arrangements to pay by instalments or pay late
Record keeping (individuals and directors)
What records you need to keep for your tax return and for how long
Additional links
Email scams
Bogus HMRC emails - don't give away your personal details
