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.

1 January 2022 - Due date for Corporation Tax due for the year ended 31 March 2021.

19 January 2022 - PAYE and NIC deductions due for month ended 5 January 2022. (If you pay your tax electronically the due date is 22 January 2022).

19 January 2022 - Filing deadline for the CIS300 monthly return for the month ended 5 January 2022.

19 January 2022 - CIS tax deducted for the month ended 5 January 2022 is payable by today.

31 January 2022 – Last day to file 2020-21 self-assessment tax returns online.

31 January 2022 – Balance of self-assessment tax owing for 2020-21 due to be settled on or before today unless you have elected to extend this deadline by formal agreement with HMRC. Also due is any first payment on account for 2021-22.