Tax Diary September/October 2018

Dates and deadlines for this month and October:

1 September 2018 – Due date for Corporation Tax due for the year ended 30 November 2017.

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

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

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

1 October 2018 – Due date for Corporation Tax due for the year ended 31 December 2017.

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

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

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

31 October 2018 – Latest date you can file a paper version of your 2018 self-assessment tax return.

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