This site uses cookies to improve your browsing experience and analyse use of our website. By clicking ‘I accept’ you agree and consent to our use of cookies. You can find out more about our cookies here. Find out more

Tax Diary December 2019

Peter Richardson

Here are the important tax dates for your calendar this month. 

1 December 2019 - Due date for Corporation Tax payable for the year ended 28 February 2019.

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

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

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

30 December 2019 - Deadline for filing 2018-19 self-assessment tax returns online to include a claim for under payments to be collected via tax code in 2020-21.