Tax Diary December 2020/January 2021
26/11/2020

1 December 2020 - Due date for Corporation Tax payable for the year ended 28 February 2020.

19 December 2020 - PAYE and NIC deductions due for month ended 5 December 2020. (If you pay your tax electronically the due date is 22 December 2020)

19 December 2020 - Filing deadline for the CIS300 monthly return for the month ended 5 December 2020. 

19 December 2020 - CIS tax deducted for the month ended 5 December 2020 is payable by today.

30 December 2020 - Deadline for filing 2019-20 self-assessment tax returns online to include a claim for under payments to be collected via tax code in 2021-22.

1 January 2021 - Due date for Corporation Tax due for the year ended 31 March 2020.

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

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

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

31 January 2021 – Last day to file 2019-20 self-assessment tax returns online.

31 January 2021 – Balance of self-assessment tax owing for 2019-20 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 2020-21.


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