Self assessment tax return 2022-23 are now due
Self-Assessment tax returns for 2022-23 are now due to file
Register for Self-assessment if you are self-employed
or a sole trader, not a self-employed, or registering
a partner or partnership 05/10/2023
Paper tax returns Midnight 31/10/2023
Online tax returns Midnight 31/01/2024
Pay the tax you owe Midnight 31/01/2024
There’s usually a second payment deadline of 31 July if you make advance payments towards your tax bill
You’ll usually pay a penalty if you’re late. You can appeal against a penalty if you have a reasonable excuse.
When the deadline is different
Submit your online return by 30 December if you want HMRC to automatically collect tax you owe from your wages and pension, if you owe less than £3000.
HMRC must receive a paper tax return by 31 January if you’re a trustee of a registered pension scheme or a non-resident company. You cannot send a return online.
HMRC might also email or write to you giving you a different deadline.
Partnership returns if you have a company as a partner
If your partnership’s accounting date is between 1 February and 5 April and one of your partners is a limited company, the deadline for:
online returns are 12 months from the accounting date
paper returns are 9 months from the accounting date