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