Self Assessment: detailed information

Guidance, forms and helpsheets for Self Assessment. Including filing returns, paying your bill, refunds, penalties, and help and support.

You can ask HMRC’s digital assistant to find information about Self Assessment. If the digital assistant cannot help you, you can ask to transfer to an HMRC adviser if they’re available.

Get started

Log in and file a tax return

Paying your tax bill

Record keeping

Forms and helpsheets

Refunds, appeals and penalties

Help and support

Updates to this page

Published 12 February 2024