1 May 2016
Due date for corporation tax due for the ended 31 July 2015

19 May 2016
PAYE and NIC deductions due for the month ended 5 May 2016 (if you pay electronically the due date is 22 May 2016)

19 May 1016
Filing deadline for the CIS300 monthly return for the month ended 5 May 2016

19 May 2016
CIS tax deducted for the month ended 5 May 2016 is due today (again, if you pay electronically the due date is 22 May 2016)