In this section:
Introduction to Self Assessment What Self Assessment means, who needs to complete a tax return and how to get one, getting a reference, 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.
Registering for Self Assessment How and when to register with HM Revenue and Customs if you need to complete a Self Assessment tax return for the first time.
Completing your tax return (individuals and directors) Information you'll need to complete your tax return, key steps, common mistakes, where to get help.
Record keeping (individuals and directors) Personal records you must keep for tax, why you need them and for how long, links to record keeping for businesses and others
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 and using Self Assessment Online Benefits of filing your tax return online, how to sign up to use HMRC online services, and what to do if you have lost your ID or password.
Understanding and checking your tax calculation Your Self Assessment tax calculation explained, why it's important to check it and tell us if you think it is wrong.
Understanding your Self Assessment Statement Your Self Assessment Statement explained, how to check the figures and change Payments on Account.
How to pay your tax Ways you can pay Self Assessment including Income Tax and Capital Gains Tax, information you'll need and key dates.
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.