1 January 2018 – Due date for corporation tax due for the year ended 31 March 2017.

19 January 2018 – PAYE and NIC deductions due for month ended 5 January 2018. (If you pay your tax electronically the due date is 22 January 2018)

19 January 2018 – Filing deadline for the CIS300 monthly return for the month ended 5 January 2018.

19 January 2018 – CIS tax deducted for the month ended 5 January 2018 is payable by today.

31 January 2018 – Last day to file 2016-17 self-assessment tax returns online.

31 January 2018 – Balance of self-assessment tax owing for 2016-17 due to be settled on or before today. Also due is any first payment on account for 2017-18.

1 February 2018 – Due date for corporation tax payable for the year ended 30 April 2016.

19 February 2018 – PAYE and NIC deductions due for month ended 5 February 2018. (If you pay your tax electronically the due date is 22 February 2018)

19 February 2018 – Filing deadline for the CIS300 monthly return for the month ended 5 February 2018.

19 February 2018 – CIS tax deducted for the month ended 5 February 2018 is payable by today.

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