CIS return
Construction Industry Scheme: monthly return due for period to 5th of month.
EC sales list
Deadline for online monthly or quarterly return filing.
Intrastat
Due date for payment of supplementary declarations for September 2017.
Electronic monthly PAYE/class NICs/student loan payment
If paying electronically, pay PAYE, class 1 NICs, student loan deductions and deductions from payments to subcontractors for the month up to the 5th of this month.
Paper self-assessment
Deadline for paper submission of self-assessment tax return for tax year ended 5 April 2017.