Deadline for online submission of self-assessment tax return for 2016/17 tax year.
Deadline for first self-assessment payment on account for tax year ended 5 April 2017.
Deadline for online submission of self-assessment balancing payments for 2016/17 tax year.
Corporation tax payment due for year end 30 April 2017, for those companies not liable to pay their liability by instalments.
Construction Industry Scheme: monthly return due for period up to 5th of previous month.