The last tax year started on 6 April 2018 and ended on 5 April 2019. For taxpayers who need to send HMRC a Self Assessment Tax Return for 2019 we have listed the key dates and deadlines you need to comply with.
2019 Self Assessment key dates and deadlines
5 October 2019
Deadline to tell HMRC you became self employed or started receiving income from property in 2018/19 tax year. Submit form CWF1 for self-employment or form SA1 for non self-employed income to HMRC
Midnight 31 October 2019
Submission deadline for paper tax returns
30 December 2019
Deadline for online submission of Self Assessment tax returns for year ended 5 April 2019 if you want HMRC to collect tax owed through your tax coded where you owe less than £3000.
Midnight 31 January 2020
Submission deadline for online Self Assessment tax returns.
Midnight 31 January 2020
Deadline for payment of tax owed. This is the balance of tax owed for 2019 tax year plus first payment on account for 2020 tax year.
