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What's the deadline for my self-assessment tax return?

Article ID: 877
Last updated: 22 Nov, 2018

For the tax year ending 5 April 2018, the deadlines for self-assessment tax returns are:

  • 31 October 2018 – paper.
  • 30 December 2018 – online if you owe less than £3,000 and want it collected through next year's tax code.
  • 31 January 2019 – online.

If you miss the deadline you'll be subject to the late filing penalty rules.

There are two exceptions when the paper deadline is extended to 31 January 2019:

  • Certain people are excepted from the 31 October 2018 paper deadline – if this applies to you, HMRC will notify you.
  • HMRC's online systems can't accept certain items or combinations of information and this might mean that you can't file online. Where possible the TaxCalc program will advise you of this, but if you're in any doubt, TaxCalc Support will be able to help.

The following table shows the deadlines for previous years.

Tax year

Paper deadline

Online deadline

2017-18 

31 October 2018 31 January 2019

2016–17

31 October 2017

31 January 2018

2015–16

31 October 2016

31 January 2017

2014–15

31 October 2015

31 January 2016

2013–14

31 October 2014

31 January 2015

2012–13

31 October 2013

31 January 2014

2011–12

31 October 2012

31 January 2013

2010–11

31 October 2011

31 January 2012

2009–10

31 October 2010

31 January 2011

2008–09

31 October 2009

31 January 2010

2007–08

31 October 2008

31 January 2009

2006–07

31 October 2007

31 January 2008

2005–06

31 October 2006

31 January 2007

2004–05

31 October 2005

31 January 2006

Article ID: 877
Last updated: 22 Nov, 2018
Revision: 12
Views: 16272
This article was:  


Also listed in
folder Tax Return Production -> Filing Online
folder Tax Return Production -> SA900 Trust Return
folder Tax Return Production -> SA100 Individual Return
folder Tax Return Production -> SA800 Partnership Return