Self assessment – key dates

 


31 January 2019

– First payment on account due for 2018/19 tax year.


31 July 2019

– Second payment on account for 2018/19 tax year.


5 October 2019

– Deadline for notifying HMRC of new sources of income (including the Child Benefit charge) if no tax return has been issued for 2018/19 tax year.


31 October 2019

– Deadline for submission of 2018/19 non-electronic returns.


30 December 2019

– Deadline for submission of 2018/19 electronic tax returns if ‘coding out’ of any underpayment is required.


31 January 2020

– Deadline for filing electronic tax returns for 2018/19. Balancing payment due for 2018/19 tax year. First payment on account due for 2019/20 tax year.