1 October 2021 - Due date for Corporation Tax due for the year ended 31 December 2020.

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

19 October 2021 - Filing deadline for the CIS300 monthly return for the month ended 5 October 2021.

19 October 2021 - CIS tax deducted for the month ended 5 October 2021 is payable by today.

31 October 2021 – Latest date you can file a paper version of your 2021 self-assessment tax return.

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.