1 December 2018 - Due date for Corporation Tax due for the year ended 29 February 2018.

19 December 2018 - PAYE and NIC deductions due for month ended 5 December 2018. (If you pay your tax electronically the due date is 22 December 2018)

19 December 2018 - Filing deadline for the CIS300 monthly return for the month ended 5 December 2018.

19 December 2018 - CIS tax deducted for the month ended 5 December 2018 is payable by today.

30 December 2018 - Deadline for filing 2017-18 self-assessment tax returns online to include a claim for under payments to be collected via tax code in 2019-20.

1 January 2019 - Due date for Corporation Tax due for the year ended 31 March 2018.

19 January 2019 - PAYE and NIC deductions due for month ended 5 January 2019. (If you pay your tax electronically the due date is 22 January 2019)

19 January 2019 - Filing deadline for the CIS300 monthly return for the month ended 5 January 2019.

19 January 2019 - CIS tax deducted for the month ended 5 January 2019 is payable by today.

31 January 2019 – Last day to file 2017-18 self-assessment tax returns online.