Personal Tax - Key dates for 2018/2019

31 January 2018

Deadline for 1st payment on account for 2017/18 tax year.

5 April 2018

Deadline for claiming tax overpaid for the 2013/14 tax year under Self-Assessment

6 April 2018

First day of the new tax year 2018/19.

31 May 2018

Last date to give employees a form P60 for 2017/18.

6 July 2018

Copies of 2017/18 P11d documents issued to employees.

31 July 2018

Deadline for 2nd payment on account for tax year ending 5 April 2018.

5 October 2018

Deadline to register with the HMRC if you became self-employed or started receiving income from property.

31 October 2018

Deadline for paper Self-Assessment Returns for 2017/18 tax year.

30 December 2018

Deadline for online submission of Self-Assessment Returns for year ending 5 April 2018 for HMRC to collect tax through PAYE tax codes where they owe less than £3,000.

31 January 2019 

Deadline for online self-assessment tax returns for 2017/18 tax year.

Deadline for paying tax bill for tax year ending 5 April 2018.

5 April 2019

End of tax year 2018/19.