1 November 2021 – Due date for Corporation Tax due for the year ended 31 January 2021.

19 November 2021 – PAYE and NIC deductions due for month ended 5 November 2021. (If you pay your tax electronically the due date is 22 November 2021.)

19 November 2021 – Filing deadline for the CIS300 monthly return for the month ended 5 November 2021. 

19 November 2021 – CIS tax deducted for the month ended 5 November 2021 is payable by today.

1 December 2021 – Due date for Corporation Tax payable for the year ended 28 February 2021.

19 December 2021 – PAYE and NIC deductions due for month ended 5 December 2021. (If you pay your tax electronically the due date is 22 December 2021)

19 December 2021 – Filing deadline for the CIS300 monthly return for the month ended 5 December 2021. 

19 December 2021 – CIS tax deducted for the month ended 5 December 2021 is payable by today.

30 December 2021 – Deadline for filing 2020-21 self-assessment tax returns online to include a claim for under payments to be collected via tax code in 2022-23.