1 December 2013 - Due date for Corporation Tax due for the year ended 28 February 2013.

 19 December 2013 - PAYE and NIC deductions due for month ended 5 December 2013. (If you pay your tax electronically the due date is 22 December 2013.)

 19 December 2013 - Filing deadline for the CIS300 monthly return for the month ended 5 December 2013.

 19 December 2013 - CIS tax deducted for the month ended 5 December 2013 is payable by today.

 30 December 2013 - Deadline for filing 2012-13 Self Assessment online to include a claim for under payments (under £3,000) be collected via tax code in 2014-15.

 1 January 2014 - Due date for Corporation Tax due for the year ended 31 March 2013.

 19 January 2014 - PAYE and NIC deductions due for month ended 5 January 2014. (If you pay your tax electronically the due date is 22 January 2014.)

 19 January 2014 - Filing deadline for the CIS300 monthly return for the month ended 5 January 2014.

 19 January 2014 - CIS tax deducted for the month ended 5 January 2014 is payable by today.

 31 January 2014 – Last day to file 2013 Self Assessment tax returns online.

 31 January 2014 – Balance of Self Assessment tax owing for 2012-13 due to be settled today. Also first payment on account for 2013-14 due today.