Tax diary October
October is a very busy time in the tax calendar, with critical filing dates.
1 October 2017 - Due date for Corporation Tax due for the year ended 31 December 2016.
19 October 2017 - PAYE and NIC deductions due for month ended 5 October 2017. (If you pay your tax electronically the due date is 22 October 2017.)
19 October 2017 - Filing deadline for the CIS300 monthly return for the month ended 5 October 2017.
19 October 2017 - CIS tax deducted for the month ended 5 October 2017 is payable by today.
31 October 2017 – Latest date you can file a paper version of your 2017 Self Assessment tax return.