1 May 2017 –
Due date for Corporation Tax due for the year ended 31 July 2017.

19 May 2017 –
PAYE and NIC deductions due for month ended 5 May 2017. (If you pay your tax electronically the due date is 22 May 2017)

19 May 2017 –
Filing deadline for the CIS300 monthly return for the month ended 5 May 2017.

19 May 2017 –
CIS tax deducted for the month ended 5 May 2017 is payable by today.